Calculate the mass, in grams, of each sample. a. 1.1 x 10 gold atoms b. 2.82 x 102 helium atoms c. 1.8 x 1023 lead atoms d. 7.9 x 1021 uranium atoms

Q: 39. A 540-g aluminum rod contains A. 20.0 mol of aluminum B. 540 Al atoms C. 1.2 x 1024 Al atoms D.…

A: A) Moles = Mass / Molar Mass Molar Mass of Al= 26.98 g/mol So Moles of Al= 540 /26.98…

Q: 1. Calculate the mass in grams of a single oxygen molecule, 02.

A: Molar mass of O2 is 32.0 g/mol  We have to calculate here mass of 1 molecule of oxygen i.e. O2

Q: Find the mass of 1 molecule of NaH in gram. O a. 3.98 x10-23 O b. 12 O c. 23.99 O d. 3.98 x1023

A: Molar mass amount(1 mole) of any compound contains Avogadro number6.022×1023 of molecules. Molar…

Q: ne number of atoms

A:

Q: A sample of carbon dioxide is analyzed and determined to be 27.3% by mass carbon. If a 50.0 g sample…

A: Consider a compound AB  Percent of A = (Mass of A/Mass of AB) x 100  Law of conservation of mass:…

Q: A certain mass of carbon reacts with 455.9 g of oxygen to form carbon dioxide. ________ grams of…

A: According to Law of multiple proportions:     C  + O2 → CO2    ----Eqn 1     C  + 1/2O2 → CO…

Q: Find the mass of 4.5 moles of Zinc (Zn).

A: Given, moles of Zinc (Zn) = 4.5 moles mass of Zinc (Zn) = ? g Note: molar mass of Zinc (Zn) = 65.38…

Q: Find the mass of 1 atom of Chlorine in gram.

A:

Q: The reaction of sulfur powder (S8) with oxygen gas (O2) results in the formation of one of many new…

A: We know that, molar mass of O = 15.999 g/mol molae mass of S = 32.065 g/mol

Q: A. Br HBr (excess) پنی من من بنے Br B. Br Br Br Br + Br Br D. Br Br

A: Addition reaction of HBr to an alkyne

Q: A sample of Aluminum foil contains 6.30 x 10^23 atoms. What is the mass of the foil

A: One mole of any substance contains 6.023 X 1023 units of that substance (atoms, ions or Molecules) .…

Q: . Suppose you have a sample of sodium weighing 14.50 g. What mass of potassium would you need to…

A: Atomic mass of sodium=23 Atomic mass of potassium=39 Number of mole=given mass/molar mass So,…

Q: 27: What is the mass defect of Be? (Refer to the mases table from the formula sheet) 4

A: Mass defect is define as the disparity in mass of atom to mass of protons, neutrons, and electrons…

Q: A student synthesizes tin oxide to create a compound with generic formula SnxOy. She does this by…

A: Given : mass of product= 39.10 g        Mass of tin = 30.80 g

Q: The element X in a compound was involved in a chemical reaction. After the reaction was completed,…

A: Given: Element X undergoing a chemical reaction.

Q: 4. Suppose you have a mixture that weighs 6.00 g. In the mixture you 2.50 g of iron and 3.50 g of…

A: The total weight of mixture is 6.00 g. The mass of iron and sulfur present in mixture is 2.50 g and…

Q: Which of the following samples of gases contains the greatest number of atoms? (Relative atomic…

A: 4th option is correct that is 13.0 g of C2H6

Q: Determine the number of atoms of mercury in a 8.332 g sample of pure mercury

A: First Calculate mole= weight/molar mass Atomicity =1 because Mercury excuse as Hg in nature so 1…

Q: 3) A tiny speck (8.3 x 107 mol) of radioactive americium-241 is used in smoke detectors. How many…

A:

Q: What mass of Al contains the same mumber of atoms as 3,.0g Pb a 23 g 6.0.014 g c 3.0 g d.0.39 g e…

A: Given : Mass of Pb = 3.0 g Since number of atoms of any element is given by, => Number of atoms =…

Q: 1.Define matter and classify a given substance by state and composition; and suggest how to separate…

A: (1) Matter is any Substance that has mass, occupy volume, and can be sensed by our sense organs. For…

Q: Calculate the mass in kilograms of 11.9 mol of CuF2 2H20. kg CuF2 2H20

A:

Q: Rank the elements in the table below in order from least to greatest number of atoms. Mass (g)…

A:

Q: How many grams of platinum (Pt) contain the same number of atoms as 5.0 g of lithium (Li)? О а. 0.18…

A: Given, Mass of lithium (Li) = 5.0 g Mass (in grams) of platinum (Pt) contain the same number of…

Q: An analytical chemist measures the amount of Elements E, and E, in four samples of an unknown…

A: Given is a sample of X containing E1 and E2. To find: If X is pure? To find mass of E1 if X is 10…

Q: Consider two compounds. Compound A contains 2.77 g of phosphorus and 9.53 g of chlorine. Compound B…

A: Given,Mass of Phosphorus in compound B =11.9gMass of chlorine in compound B =40.9g

Q: . What is the mass, in grams, of each of the following? a. 2.3*10^-3 mol Sb b. 3.59*10^-2 mol Ba…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: The element rhenium (Re) has two naturally occurring isotopes, 185 Re and 187 Re. Rhenium is 62.60%…

A:

Q: A sample of silver contains 45.9 x 1027 atoms of silver. Find the mass of silver in kilograms.

A:

Q: In 6.9 g of aluminum, there are ______ x 1023 aluminum atoms present

A: Molecular mass of atom contains 6.023 × 10^23 atoms. Molar mass of aluminium is 26.981 g/mol

Q: How many oxygen atoms are there in 3.15 g of Al2(S208)3 (MW A12(S208)3 = 630.34 amu) O a. 2.41 X…

A: Given that,  Amount of Al2(S2O8)3 = 3.15 g Molar mass of Al2(S2O8)3 = 630.34 amu Moles of Al2(S2O8)3…

Q: 22. What is the mass in grams of each of the following? a. 3.011 × 10²⁹ atoms F b. 1.50 x 1023 atoms…

A:

Q: Vhich sample contains the fewest atoms? O a. 225 g C O b.50 g Xe O C. 125 g Fe O d. 25 g Ca O e. 50…

A:

Q: What is the average mass of one copper atom? (N = 6.022 × 10²3 mol¯¹) Select one: OA. 1.055 x 10-22…

A: Number of copper atom = The value of Avogadro number,The molar mass of The average mass of one…

Q: 4.00 moles of carbon have a mass of? a. 4.60 g b. 23.0 g c. 92.0 g d. 11.0 g e. 48.0 g

A: The molar mass of carbon=12 g/mol The given number of moles of Carbon=4.0 mol

Q: The average atomic mass of carbon is 12.011 amu. Assuming you were able to pick up only one carbon…

A: Given that, the average mass of carbon is 12.011 a.m.u. The given mass of any of the carbon isotopes…

Q: 7. Place the labels chemical symbols, atomic number, and mass number in the shorthand notation…

A: -> The number at down side in symbol is always atomic number . -> The number at upper side in…

Q: how many atoms are in a copper pipe that weighs 8.25 g

A: Given, Mass of copper = 8.25 g Number of atoms = ? Note: Atomic mass of Cu = 63.546 g/mol 1 mol of…

Q: What is the mass of magnesium fluoride that contains 7.29 × 1024 F atoms?   Relative atomic…

A: Given,  The mass of magnesium fluoride that contains 7.29 × 1024 F atoms is:

Q: 15. How many atoms are in a sample of 10.0 grams of silver? a. b. 5.58 x 1022 atoms 3.06 x 1022…

A: mole is equal to weight of substance divide by it's molar mass

Q: A nutrition table lists apples with a potassium content of 4600 mg/pound. Assume an average apple is…

A: According to the given data, Mass of an average apple = 75.0 g Because, 454 g = 1 poundMass of an…

Q: 5. Find the mass in grams of each of the following. a) 1 gold atom b) 6.02 X 1023 He atoms

A:

Q: e mass

A: Since you have asked multiparts, we will solve the first three subparts for you. If you want any…