Calculate the mass of each sample, express your answer with the appropriate units. 14.7 mol HNO2 1.98 x 10-3 mol H2S

Q: How many moles (of molecules or formula units) are in each sample? 20.0 kg Fe (NO3) 2 Express your…

A: Given , mass of Fe(NO3)2 = 20.0 Kg = 20,000g Molar mass of Fe(NO3)2 = 179.85 g/mol To find the…

Q: Complete the table. Number of Particles (atoms Substance Mass Moles or molecules) Ar 4.5 x 10-4 NO2…

A: Ar : Mass of Ar = moles x molar mass                   = 4.5 x 10-4 x 40                   = 1.80 x…

Q: A sample of limestone and other soil materials was heated, and the limestone decomposed to give…

A: Given -> CaCO3(s) -----> CaO(s) + CO2(g)  Weight of sample = 2.237 gm  Weight of CO2 formed =…

Q: ell. Begin with 2.45 mol Cu and multiply by Avoga- 6.022 X 1U SI P Nn = 1.48 X 10 Cu atoms mass tha…

A: Given:Number of Silver atoms in the sample = 2.60  X 1022We need to calculate the number of moles of…

Q: The “lead” in lead pencils is actually almost pure carbon and the mass of a period mark made by a…

A: Answer = 5.02 x 10 19

Q: step 4 Dichlorine heptoxide (C1207)(C1207) is a highly reactive compound used in some organic…

A: Given that -  Dichlorine heptoxide , Cl2O7 , which is a highly reactive compound.    The molar…

Q: How many moles are in 44.0 g of Al₂(CO3)3? Be sure to answer all parts. Enter your answer in…

A: Since, Moles is the ratio of mass to the molar mass of that atom or molecules. Thus,

Q: This question will walk you through the process of calculating the empirical formula of a 100.0 g…

A: Given: The number of moles of carbon, nitrogen, and hydrogen present in 100 g of sample is 2.38 mol,…

Q: What is the elemental composition of mercury(I) nitrate, Hg2(NO3)2? Report the mass percent of each…

A: Answer:- This question is answered by using the simple concept of calculation of percent of each…

Q: d your answer to 1 decimal p g-mol -1

A: Molar mass of a compound is defined as the mass of 1 mole of that substance and number of grams per…

Q: Convert 1.23 x 104 atoms of carbon to moles of carbon. 1.23 x 104 atoms = mol C

A: Given,  No. Of atoms of carbon = 1.23 × 1024

Q: QUESTION 6 Convert 2.09 moles NaOH to grams. 174 grams NaOH 83.6 grams NaOH 2. grams NaOH 0.0523…

A: 6. Given;

Q: Calculate the percentage composition by mass of each of the elements in sulfuric acid (H2SO4).…

A: The molecular formula of sulfuric acid is H2SO4. The percent composition of each of the elements in…

Q: Moles 6.87 moles CH, 1.32 moles 0₂ Mass (grams) 12.5 g N₂ Particles (Atoms or Molecules) Volume (L)…

A: Since you asked multiple questions so as per Q&A guidelines of portal I solved first three parts…

Q: What is the mass of 1.11 x 1021 formula units of KBr?

A: 1 mole = 6.022x 1023 molecules or atoms  mole (n) = Mass / molar mass   Mass = mole x molar mass

Q: Dinitrogen oxide (or nitrous oxide), N2O, also known as laughing gas, is widely used as an…

A:

Q: How many moles (of molecules or formula units) are in each sample? 19.3 g NO2 Express your answer…

A: “Since you have posted a question with multiple sub-parts, we will solve the first three sub-parts…

Q: 6. A student reported the following percentages for his unknown mixture: 25% NH4CI, 30% NaCI, and…

A:

Q: Convert 5.26×1021 platinum atoms to moles. Express your answer in moles to three significant…

A:

Q: What is the mass percentage of carbon in C7H11O3? Express your answer as a percentage (i.e., out of…

A: Mass percentage of element in compound is defined as percent ratio of element mass to the whole…

Q: Mole is the term used to express the quantities of substances involved in a chemical reaction. Mole…

A:

Q: The chemical formula for lithium hydride is LiH. A chemist measured the amount of lithium hydride…

A: Moles = Mass / Molar mass  Moles of A = Mass of A / Molar mass of A

Q: There are several common counting units: 1 dozen=121 dozen=12, 1 score=201 score=20, 1 ream=5001…

A: Assume that the piece of jewellery contains 8.45 x 1022 atoms of silver in it.

Q: [Tutorial: Empirical formula) This question will walk you through the process of calculating the…

A:

Q: Convert 1.80 x 1024 formula units of copper (II) nitrate to moles. Express the answer by rounding to…

A: We know that ; 1 mol of substance contain  = 6.022 x 1023 formula units   By this we can calculate…

Q: 42.161 * 1223 molecules of salt + 18.066 × 1023 molecules of sugar

A: 42.161 * 1223 molecules of salt + 18.066 × 1023 molecules of sugar  first we will convert molecules…

Q: How many lithium iodide formula units, Lil, have a mass equal to 4.24 g? 1.91 x 1022 formula units…

A: Mole concept: The number of molecules or atoms present in the one mole of the substance is equal to…

Q: What is the percent NaCl in the sample?

A:

Q: Convert 3.74 x 1019 particles CrN to moles

A:

Q: Calculate the amount of anions (in moles) in 24.4 g of calcium iodate. Express your answer with…

A:

Q: Calculate the number of moles in each sample. 74.9 g HCCl3 Express your answer with the…

A: Given samples,    74.9 g HCCl3    10.7 g C6H12O6    28.4 kg C2H4    22.6 g of dinitrogen monoxide

Q: them from smallest to largest by mass. 0.75 mol H20(liq) 7.0 g N2(g) 0.55 mol Ar(g) 0.45 mol N2(g)

A: Mole of a substance or a mole of a particles is defined as exactly 6×10^23 particles which may be…

Q: A sample of pure lithium nitrate contains 10.1% lithium by mass. What is the % lithium by mass in a…

A: Lithium nitrate contains 10.1% lithium by mass.

Q: The chemical formula for octane is: CH3 (CH₂) CH3 Calculate the molar mass of octane. Round your…

A: Since, Molar mass of the compound is the sum of molar mass of each atom present in the molecule.…

Q: Convert 6.76 x 1024 molecules/formula units of X4Z4 into grams of the same compound. (Assume that…

A: Molar Mass Of X4Z4 = 4 × molar mass of X + 4 × molar mass of Z = (4 × 32.75) g/mole + (4 × 51.8)…

Q: This is the chemical formula for acetone: (CH,),CO. Calculate the mass percent of carbon in acetone.…

A: The mass percent of an element is given as follows; Given the chemical formula of acetone is…

Q: 4.25 x 1024 atoms N converted to grams

A: We have given the atoms of nitrogen = 4.25 × 1024 atoms Avogadro's constant = 6.022 × 1023…