And then multiply this with the molar mass of magnesium sulfate, 1 20.36 graham, sperm. b. So first of all we need to convert the mass of magnesium hydroxide to the number of moles of magnesium hydroxide. One important feature of the chemistry of carbon is c. C4H10 b. Buckminsterfullerene 21.9 kJ/mol May anybody who is good at the Human Resources in Health Care Organizations class help me with the assignment below. e. Polypropylene, Which of the following pairs of liquids is least likely to be miscible? a. (R = 1.096776 107 m-1; c = 3.00 108 m/s) e. known to form complexes with platinum that inhibit the growth of cancerous cells. Solve the IVP Q2) Solve the IVP. Select one: 15 p, 16 n, 15 e d. Hexane-diethyl ether Find P(X > 2) A stone is thrown horizontally at 15 m/s from the top ofa cliff 44 m high; 8 Y How long does it take the stone to reach the bottom of the cliff? e. proton: 11p, When atoms of beryllium-9 are bombarded with alpha particles, neutrons are produced. Select one: Find the number of automobiles whose total mass is the same as 1.0 mol blueberries. A salt bridge provides electrical contact between the electrodes that make up the cell. a. Na2O Select one: (R = 8.314 J/K mol) a. You use the periodic table to look up the mass of each atom (H is 1.01 and O is 16.00). One atomic mass unit is equal to 1.66 x 10-24 grams. c. Ester d. 5.44 mol Select one: What protein(s) is/are mutant in patients with XP? Helmenstine, Anne Marie, Ph.D. (2021, June 2). d. 10 b. 2 A. calculate the normal force. HCL. Uh the mole ratio um in order to determine the number of moles of magnesium hydroxide from the number of moles off. Note that each element may contain more isotopes. -CH2CHCH2CHCH2CH- Law e. 82.4C, Which of the following elements has the largest number of unpaired electrons in the ground state? With uses and acid to neutralize excess stomach acid. 2, 2021, thoughtco.com/avogadros-number-example-chemistry-problem-609541. The pH of a solution of Mg(OHJz is measured as 10.0 and the Ksp of Mg(OH)z is 5.6x 10-12 moles?/L3, Calculate the concentration of Mg2+ millimoles/L. Label all primary, secondary, and tertiary carbons. What is the vapor pressure of a solution prepared by dissolving 0.75 mol of nonvolatile safrole in 950 g of ethanol (46.07 g/mol)? The given problem will solve by using Avogadro number. c. amphoteric Which statement is false? d. Esterification a. What is the coordination number for Fe? a. the liquid level in a capillary tube will rise above the surrounding liquid and the surface in the capillary tube will have a convex meniscus. Using dimensional analysis: . b. d. 4 a. One molecule of water (H 2 O) would weigh 18.02 amu (21.00797 amu for H + 15.9994 amu for O), and a mole of water molecules would weigh 18.02 grams. e. Cutting a bar of sodium metal into pieces with a knife, The correct answer is: Turning hair yellow with bleach, Which of the following is an extensive property? One unified atomic mass unit is approximately the mass of one nucleon (either a single proton or neutron) and is numerically equivalent to 1 g/mol. b. -$382 B. a. What equipment would be the best for measuring the mass of a rock in grams? 3. e. Dehydrogenation polymerization, The correct answer is: Condensation polymerization. Avogadro's number is the number of particles in one mole of anything. The answer is 74.9216. Calculate the mass of 3.00 moles of CF2Cl2. b. d. 0.21 Now first of all we need to check if the reaction equation is balanced or not and we can see that it's not balanced. 7 moles Arsenic to grams = 524.4512 grams d. known to form unstable complex ions with Fe3+, Hg2+, and Zn2+. a. 84.30 mmHg What is the mass of one atom of magnesium in grams? What is meant by the prefix "poly"? b. critical point. m = mass = g M = molar mass = g mol A = Avagadro's Constant = 6.02214086 1023particles mol e. Heterogeneous mixture. d. Br3F e. More that one of these oxides are amphoteric. The vapor pressure of a solvent over a solution decreases as its mole fraction increases. This means that if you have 3x10 24 atoms of chlorine, it is the same as having 176.6 grams of chlorine. You'll get a detailed solution from a subject matter expert that helps you learn core concepts. d. 79.2C You want to first convert the number of atoms to mols of atoms. d. carbon tetrachloride e. 72.0 lb. Select one: Select one: e. 79.6 g, What volume of ethanol (density = 0.7893 g/cm3) should be added to 450. mL of water in order to have a solution that freezes at -15.0C? Assume that the solute addition does not significantly change the volume of liquid in the beaker. And now we can go ahead and do some calculations. And the atomic massive option at 16 ages one so well approximately 18 g of HBO and everyone more mm. a. light Each circle of X represents 1 mol of X. c. 76.2 g Given: Hi-6m and H-4m. 15.69moles CH3OH 32.04 g 1mole CH3OH = 50.3 g . d. 4.87 kg So,. c. A salt bridge insulates the two electrodes. e. 165.93 mmHg. What is its empirical formula? d. Mn2+ Sorry this is magnesium. c. the liquid level in a capillary tube will drop below the surrounding liquid and the surface in the capillary tube will have a convex meniscus. Which solution has the highest vapor pressure? Select one: IfX is the associated random variable, what is E(X)? Number of atoms of arsenic = 6.0210 atoms. So let's start with the H two S. 04 1st. a. C12H28 The vapor pressure of pure benzene at this temperature is 74.61 mmHg and its density is 0.87865 g/cm3; the vapor pressure of pure carbon tetrachloride is 91.32 mmHg and its density is 1.5940 g/cm3. b. neutron: 10n a. There are three on the product side. c. 212 mL c. 0.27 46.8016 g 1.24 lb c. 8 What is the average mass in grams of one Zn atom chegg? When a sample of benzoic acid is dissolved in ether, the vapor pressure of the solution is 342 torr. b. Emulsion T (C)-84.5-71.2-47.3P(mmHg)40.0100.0400.0 d. 12.45 Select one: e. 246 kJ. b. b. Select one: MOLE PARTICLE (ATOM) MASS (g) 1 mole = molar mass (look it up on the PT!) Explanation: In order to determine the mass of one atom of an element, you must determine its molar mass, which is its atomic weight on the periodic table in g/mol, and you need to know the relationship between moles and the number of atoms: 1 mol of atoms = 6.022 1023 atoms. Ozone (O3) in the atmosphere can react with nitric oxide (NO) as follows.O3(g) + NO(g) NO2(g) + O2(g). Select one: d. 2Al3+(aq) + 3Cu(s) 3Cu2+(aq) + 2Al(s) 3 moles Arsenic to grams = 224.7648 grams. Select one: d. 32 p, 31 n, 32 e b. If 0.5 moles of hydrofloric acid ar Top Answer. e. 2.29 10-6 s-1, Which of the following subshells has the highest energy in the element tantalum? What is its formula? Which of the following is not a polymer? e. Will all waxes melt at the same temperature? e. 43.9140 g, Which of the following is a nonmetal? It makes working with atoms easier because we work with moles rather than individual atoms. (For ethanol, Kb = 1.22 C/m; density = 0.789 g/cm3; boiling point = 78.4C) An unpolarized beam of light with intensity 10 = 98.8 lux is incident on three ideal polarizing filters (lux = 2.). Select one: 119.00amu 39.10amu+79.90amu= 118.95 => 119.00amu Find all second-order partial derivatives of the given function:2 = 6xln(xty), Wrilo and simplfy Iho Intogrnl thol Oros Iho arc Ionguh ol tho lollowing curvo on Iho pivon Inlocvul nocotanry: 4to {ochnokrly lo nvalunto approxrato Iho intogml(3*), for 0sx* 2Sot up tho intagral Ihat gos Iho ara longth &l Iho curvo; Soloct tho corroct colco bolow nnd 6il In tho unorur bax la comploto your cholco. e. None of these choices is correct. d. Change only the coefficients to balance the number of atoms. d. Ge The atomic mass of potassium is approximately (a) 19 amu (b) 39 amu (c) 59 amu. b. Select one: -A-A-B-B-B-A-A-B-B-B- (R = 8.314 J/K mol) She has taught science courses at the high school, college, and graduate levels. The correct answer is: system loses energy while surroundings heat up. So to first balance this one, let's look at the S. 04 1st. b)How far from the base of the cliff does the stone strike? How much wor Earth has a radius of 6.38 106 m and rotates with a period of 23.9 hours. O Which of these pairs consists of isoelectronic species? e. BrF3, Which of the following substances contains the greatest mass of carbon? c. one hydroxyl group and one methyl group. e. 2.43 kg, The half-life of 14C is 5730 yr. Forming a water molecule gives you a mass of: 1.01 + 1.01 + 16.00 = 18.02 grams per mole of water, mass of 1 molecule = mass of one mole of molecules / 6.022 x 1023, mass of 1 water molecule = 18.02 grams per mole / 6.022 x 1023 molecules per mole, mass of 1 water molecule = 2.992 x 10-23 grams. How much energy, in joules, did the household use? 65.39 g 1.09 x 10-22 8 3.94 x 10258 65.39 amu. Which of the following statements is not true? c. Polypropylene In a spontaneous exothermic process, The correct answer is: 0.75 mol of a volatile compound in 750 g of ethanol, Which is a Lewis base? d. neutral c. 9.27 10-23 g d. Si Let's say, for example, you want to know the mass of a single atom of water. a. And we look at the limiting reacted. Select one: e. 100 g CO2, What is the average mass, in grams, of one atom of iron? a. BrF c. 2.8 x 103 g b. P Px. Arsenic is a metalloid, meaning it shares some characteristics with metals, and some with non-metals. c. 12.15 Select one: e. 2.35 10-3 M, Iodine trichloride, ICl3, will react with a chloride ion to form ICl4-. Gold's (Au) molar mass from the Periodic table is "196.966" g/mol. So this she also for should also be made three to balance that. a. b. H2O Arsenic, Smaller mass is 74.9 grams per mole. c. 82.96 mmHg d. Addition polymerization c. Compound (c = 3.00 108 m/s) a. Srxn > 0, Hrxn > 0 If there is one. Complete the table below: if " = ICu = 2 =)(- + f-") fn ifn 2 3 all steps 1 265 Theorem:[Calculus, infnite power series for e ] e" =CXo finite number of terms from that infinite series, s0 uses polynomial Pn(z) of some degree - computer Or calculator can only use e" ~ Pn(z) = Ci 5 What is the electric field at point P, located at position (a, a), from the dipole shown in the figure below? d. Solutions A and B have the same vapor pressure and it is higher than the vapor pressure of solution C. what is the mass in grams of one arsenic atom. b. Select one: And we saw that in the case of the sulphuric acid um This limits the mass of magnesium sulfate that can form. 12.9 kg Hope this helps! Select one: e. AlCl3, Below is a representation of pure liquid HX, an amphoteric substance, at equilibrium. ThoughtCo. What is the vapor pressure of ethanol, in mmHg, at 34.9C? 245 mL In this context, it is the number of atoms in one mole of an element. 1 grams Arsenic is equal to 0.013347285695981 mole. A salt bridge carries electrons between the cathode and anode. The correct answer is: an effective antidote for heavy metal poisoning (e.g., Pb2+ and Hg2+). c. 6 The atomic mass of arsenic is 74.92 g/mol. mass of 1 atom / 1 atom = mass of a mole of atoms / 6.022 x 10 23 atoms Plug in the atomic mass of carbon to solve for the mass of 1 atom: mass of 1 atom = mass of a mole of atoms / 6.022 x 10 23 mass of 1 C atom = 12.01 g / 6.022 x 10 23 C atoms mass of 1 C atom = 1.994 x 10 -23 g Answer The mass of a single carbon atom is 1.994 x 10 -23 g. Only one stable isotope of arsenic, that of mass 75, occurs in nature. Show that a. P.(-x) =(-1)*P(x) b. b. amplitude b. (c = 3.00 108 m/s; h = 6.63 10-34 J s; NA = 6.022 1023 moles-1) Then divide the molar mass by 6.022 1023 atoms/mol. Circle the most stable moleculels. c. 61.0C Select one: H e. Pressure, An average Mastiff puppy weighs 2.72 kilograms. e. transition state. Arsenic is a chemical element with atomic number 33 which means there are 33 protons and 33 electrons in the atomic structure. Which is the strongest acid? e. Cu2+. the mass of exactly 1 mole of methanol. 220 mmHg c. atomic mass. An atomic mass unit is defined as a mass equal to one twelfth of an atom of carbon-12. d. system heats up but there is not change in the energy of surroundings. One atomic mass unit is equal to 1.66 x 10 -24 grams. c. Hexane-acetic acid c. Mass -C-N- It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance. b. one mole = 6.0210 atoms So number of moles of arsenic are 1 mol. e. 18.0 g, A certain compound of bromine and fluorine is used to make UF6, which is an important chemical in the processing and reprocessing of nuclear fuel. It's one of the one. b. b. e. > 1015 s-1, Calculate the frequency of visible light having a wavelength of 686 nm. In this case, add up all the atomic masses in the chemical formula and divide by Avogadro's number. Select one: So this is 1/1. What is your total dollar return on this investment? . Select one: e. 82.6%. 4 moles Arsenic to grams = 299.6864 grams. b. upper right, lower left 16 p, 15 n, 16 e The density of magnesium is 1.7 g/cm3, and the density of iron is 7.9 g/cm3. c. a double covalent bond. You can view more details on each measurement unit: molecular weight of Arsenic or mol The molecular formula for Arsenic is As. 1 moles Arsenic to grams = 74.9216 grams. a. Group 1A Select one: Select one: c. 6.17 1014 s-1 The correct answer is: Paraffin wax begins to melt at 57C. c. 1.5 mol of a nonvolatile compound in 750 g of ethanol a. Zn2+ and Cu2+ There is insufficient evidence t0 support the null hypothesis (The following information applies to the questions displayed below.] The total number of neutrons in the nucleus of an atom is called the neutron number of the atom and is given the symbol N. Neutron number plus atomic number equals atomic mass number: N+Z=A. c. amphoteric d. 4f e. 0.7917 kg, Which of the following aqueous solutions should demonstrate the most ideal behavior? Select one: Use Avogadro's Number to Convert Molecules to Grams, Calculating the Concentration of a Chemical Solution, How to Convert Grams to Moles and Moles to Grams, Empirical Formula: Definition and Examples, Avogadro's Number Example Chemistry Problem - Water in a Snowflake, Calculating the Number of Atoms and Molecules in a Drop of Water, How to Calculate Mass Percent Composition, Experimental Determination of Avogadro's Number, Ph.D., Biomedical Sciences, University of Tennessee at Knoxville, B.A., Physics and Mathematics, Hastings College. To convert from grams to number of molecules, you need to use Determine the mass in grams of 3.00 10 atoms of arsenic. The September 30 bank statement for Cadieux Dear staff, This is Yu.Zhou. The amount of peremptory challenges attorneys may use are: Let < G,* > be abelian gTOup and S = { be G:|b = 1or | = 11 } Show that 5 ix # subgroup of G ? See Answer a. crystalline solids c. lower left, upper right 34.0 mol The correct answer is: vapor pressure is equal to or greater than the external pressure. 4s c. 9.1 yr Select one: Number of grams = 1.941g How Grams To Atoms Calculator Works? a. K An unpolarized beam of light with intensity 10 = 98.8 lux is incident on three P3/4/5 Problem 3 Plot the variation of total stress, pore water pressure, and effective stress with 13.069 ' 39 %my.aui maRleturns on StockEducated-NonEducated Managers~0,0us41 0 12916 -0, 05740 -0 077470.02316 0,02450 0 [5345 -0,0ni67-0,04293 '0 00250 0,07673 0,018450,051C0 0 01932 0,01641 0,070770,06640 -001CG9 02606 0oraia-0,03850 0 I1605 004997 0nu4700,10598 0,04?20 0 14360 J12589~0,00591 0,05901 0.07432 -0n3o50,COCOO 0 00285 0 013AO 0,005644 WmesenOlbaaeOOnuildbllniAunyi4TdeieiWongDooaDmEP0,0471- 0,07123 0,0458 0 0o10g 0 Djoj 0nu4n0"04643Mo. Dr. Helmenstine holds a Ph.D. in biomedical sciences and is a science writer, educator, and consultant. d. Many d. 2.35 10-17 M The correct answer is: 2Na(s) + Cu2+(aq) Cu(s) + 2Na+(aq), A current of 250. The objective of this problem is to get from a number of atoms, to a mass in grams. So now we know the mass of sodium bicarbonate. a. upper left, lower right c. 5p (a) Give the electron configuration for the valence molecular orbitals of CO. We need to divide that by 58.32 cramps. Multiply by the number of moles we calculated. Calcium fluoride, CaF2, is a source of fluorine and is used to fluoridate drinking water. c. Begin with elements that appear only once on each side of the equation. 3.0 10-2 d. Homogeneous mixture d. 0.855 Calculate the molecular mass of tetraphosphorus decaoxide, P4O10, a corrosive substance which can be used as a drying agent. That's what we're given 2.5 grams. d. K(MnO4)2 A year ago, you purchased 300 shares of Stellar Wood Products, Inc. stock at a Cx' , 0sxs3 Let f(x) = 0, elsewhere5.Do the following by hand, without using RFor what value of C is fa probability density function? Which of the following polymers is used in plastic food bags and wraps? c. -A-A-A-B-B-B-A-A-A-B-B-B- d. I3+ How do you find the mass in grams of Arsenic? d. 14.3 g d. 105B 7(0) = lo v' = -4x/y: V(2) = 3 Find all the second-order pantial derivatives of the function f(x,y) = Tx? b. 19.5 kg 34.7 kJ/mol e. n2. e reacted, what mass of calcium fluoride will be produced? Select one: (The following information applies to the questions displayed below.] :(} 4. Select one: a. b. c. Silk 74.92 grams The average mass of one atom of arsenic is 74.92 amu, and the mass of one mole of arsenic atoms is 74.92 grams. d. 81.63 mmHg What is the average atomic mass for an element that has an isotope with a mass of 107 and a percent abundance of . c. Melting butter One unified atomic mass unit is approximately the mass of one nucleon (either a single proton or neutron) and is numerically equivalent to 1 g/mol. And this gives a mass of magnesium sulfite That forms in this case of 2.06 g. Right now we do exactly the same. L. Er screen times strangled over Approximately 78 grants the L. A. P. H. D. You can find this by going on the periodic table in any of the talent masses and only a 0.128 boats of a Girlish street. e. K2Mn2O7. b. London dispersion forces e. the liquid level in a capillary tube will be flat. Select one: b. This site is using cookies under cookie policy . A mixture is a substance made by combing 2+ different materials in such a way that no chemical reaction . How many pounds is an average Mastiff puppy? Select one: e. A salt bridge allows electrolyte to flow from one half-cell to the other in order to maintain electroneutrality. Select one: 6.46 10-16 J So four aisles. 1020 kJ/mol b. its low electronegativity that allows it to ionize easily. Note that mole 1000 millimoles, Purine ' K comoe 6a 0 6mmtz atucta hused Sand 6tenbened ~ n nbora and pyridine aphosphate Srat and a bas6 deoxyribose and pyridine, Phosphomus 32 has hall-lite ol 14,0 duys. That's equal to one times. d. 6.00 lb c. 366 mmHg To calculate the mass of a single atom, first look up the atomic mass of carbon from the periodic table. A) 5.48 10 -23 g B) 33.0 g C) 74.9 g D) 1.24 10 -22 g E) 8.04 10 21 g Ans: D Category: Easy Section: 3.2 11. b. Select one: e. None of the will occur. Vitamin B1 is most soluble in _________. Absolutely not Definitely yes 1 From the formula (H2O), you know there are two hydrogen atoms and one oxygen atom. Calculate the molecular or formula mass of rubidium carbonate, Rb2CO3. Sxy +y2 7. c. magnitude d. temperature is greater than room temperature. . a. A number of moles of magnesium sulfate is going to be the same as the number of moles of. Note: Use "Total Sales" and "Total Assets" as the denominators for income statement and balance sheet, respectively. There are 74.92 grams of arsenic in 1 mole of arsenic, so we can make another ratio. The . 4.26 10-5 M Select one: 2. c. phase boundary. Input: From the top bar, select whether you want to convert atoms to grams or grams to atoms The density of "heavy water" at 20.0C is 1.1053 g/mL. If you look at . e. None of the answers is correct. (b) Do you expect $\mathrm{CO}$ to be paramagnetic or diamagnetic? d. a total of 8 2 = 16 electron dots. Grams to Atoms Calculator is a free online tool that displays the conversion from grams to atoms for the particle. e. 0.04, Diethyl ether has a vapor pressure of 400.0 torr at 18C. One atomic mass unit is equal to 1.66 x 10-24 grams. e. All are of equal strength. d. 29.3100 g c. P a. not useful as a chelating agent. (70 points) OH. a. B3+ In Figure $16-22,$ point out the mutant protein $(\mathrm{s})$ in patients with Cockayne syndrome. The nineteenth century chemists arranged elements in the periodic table according to increasing Select one: a. atomic number. a. R-CH2-C-NH2 Select one: I need to answer the question with a paragraph. d. 2n2. Arsenic is a metal. 3 0.1 M CaCl2 Hydrogen is a metal. What is the average mass, in grams, of one arsenic atom? Select one: C. d. Henry Moseley You need to add up the masses of all of the atoms in that one molecule and use them instead. a. acidic c. As This means that its atomic weight is 58.85 g/mol, the atomic weight of cobalt. e. Coagulation, Enflurane is an effective gaseous anesthetic with relatively low flammability. If 12.23 g of bromomethane are produced when 5.00 g of methanol is reacted with excess HBr, what is the percentage yield? d. O c. 3. Which of the following is the empirical formula for hexane, C6H14? c. 518 mL Select one: A. c. 3.0 M LiF b. R-CH2-NH2 b. 81 from chapter eight in this problem were asked to, uh, her first. Because atoms are electrically neutral, the number of positively charged protons must be equal to the number of negatively charged electrons. 53 Li The thi P3/4/5 Problem 3 Plot the variation of total stress, pore water pressure, and effective stress with depth for the sand and clay layers shown in a figure below. O c. Hg(l), NaCl(s) b. ionic crystals Three units of D and 2 units of F are requir 2. a. vapor pressure is exactly 1 atmosphere. B) Beaker #1 because it contains more moles of sulfur atoms versus the number of moles of arsenic atoms in Beaker #2. 6 moles Arsenic to grams = 449.5296 grams. If the rope makes an angle of 30 with the positive x-axis and the coefficient of kinetic friction between the crate and ground is 0.560. The abundance of arsenic in the Earth's crust is about five grams per ton; . Atomic weight is a weighted average of the mass of all the atoms of an element, based on the abundance of isotopes. has a total valence state of 0 (3x(+1) for the hydrogen atoms; 1x(+3) for the arsenic(III) atom; 3x(-2) for the oxygen atoms = 3+3-6 = 0). In this question, we need to calculate the mass of magnesium sulfate that will form when we start off with one g of magnesium hydroxide and 0.605g of sulphuric asset. S e. 2.5 105, Since arsenic is a nonmetal, As2O3 is expected to be a/an _____ oxide. So the mole ratio here is going to be 1/1. In Figure $16-22,$ point out the mutant protein $(\mathrm{s})$ in patients with Cockayne syndrome. 0.0169 c. 16 p, 31 n, 16 e Given Cu2+(aq) + 2e- Cu(s) E = +0.34 V Al3+(aq) + 3e- Al(s) E = -1.66 V Na+(aq) + e- Na(s) E = -2.71 VWhich of the following reactions will occur? Calculate its formula mass. Assuming some charcoal from a campfire 29,000 years old was found, what fraction of the original C-14 would remain today? What mass of cinnamaldehyde must be added to 175 g of ethanol to give a solution whose boiling point is 82.57C? A zinc (Zn) atom will have a mass of D. 1.09 x 10-22 g. What is the mass in grams of one arsenic atom? Which of the following ligands has two different types of donor atoms? Next you want to multiply by the molar mass that was given to us (74.92g/mol of Arsenic). c. P(0) - 0 3. Circle correct conclusion_There is sufficient evidence to support the alternative hypothesis_ 2) There is insufficient evidence to support the alternative hypothesis_ 3) There is sufficient evidence to support the null hypothesis.There is insufficient evidence t0 support the null hypothesis. d. phase diagram. Please give the best Newman projection looking down C8-C9. An atom of helium has a mass about four times greater than that of an atom of hydrogen. found in proteins is called a (an) The number of atoms in a body-centered cubic unit cell is (The mass of one mole of arsenic is (The mass of one mole of arsenic is A: Answer:- Firstly using the given number of atoms of arsenic, moles are calculated. Yeah so fight Is equal to 0.74 two g. So let's recap we first of all balance the reaction equation and then I realized that we need to determine the limiting reactant here by comparing the mass of magnesium sulfur that can form when starting off with one g of magnesium hydroxide With the massive magnesium sulfate that can form when starting off with 0.605 g of um sulfuric acid. The number 6.022 10 is called Avogadro number. e. Sodium, Na, Z = 11, The correct answer is: Bromine, Br, Z = 35, An atom of the isotope sulfur-31 consists of how many protons, neutrons, and electrons?