1. The number of atoms in 2.0 mol of nitrogen gas, N2, is:a.1.8 x 1024b.2.4 x1025c.1.2 x 1024d.2.4 x 1024e. 4.0 x 10232. The molar mass of a compound with the empirical formula CH₂O has a mass of approximately 90g. What is the molecular formula of the compound?a. C4H₂O4b. C₂H6O₂c. C₂H₂O6d. CzH6O3€. CHO3. A sample of hexane, C6H₁4, contains 3.0 x 1023 molecules of hexane. How many atoms are in thesample?a. 36 x 1024b. 1.8 x 1023c. 3.6 x 1024d.6.0 x 1024e. 3.0 x 10234. Examine the following formulas. Which formula is an empirical formula?a. C₂H4b. CsHoC. CH₂d. C₂H₂e. H₂O₂5. What is the molar mass of ammonium sulfite?a. 116.12g/molb. 68.17g/molc. 50.12g/mold. 132.17g/mol

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

1. The number of atoms in 2.0 mol of nitrogen gas, N2, is: a. 1.8 x 1024 b. 2.4 x 1023 c. 1.2 x 1024 d. 2.4 x 1024 e. 4.0 x 1023 2. The molar mass of a compound with the empirical formula CH₂O has a mass of approximately 90 g. What is the molecular formula of the compound? a. C4H₂O4 b. C₂H6O₂ c. C3H₂O6 d. CzH6O3 e. CHO

1. The number of atoms in 2.0 mol of nitrogen gas, N2, is: a. 1.8 x 1024 b. 2.4 x 1023 c. 1.2 x 1024 d. 2.4 x 1024 e. 4.0 x 1023 2. The molar mass of a compound with the empirical formula CH₂O has a mass of approximately 90 g. What is the molecular formula of the compound? a. C4H₂O4 b. C₂H6O₂ c. C3H₂O6 d. CzH6O3 e. CHO

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

Prevacid is used to treat gastroesophageal reflux disease (GERD). The chemical formula of Prevacid is C16H14F3N3O2S a. What is the molar mass of Prevacid? b. What mass of nitrogen is in 0.53 mol of Prevacid? C. What number of hydrogen atoms is in 0.53 mol of Prevacid? d. What is the mass of 3.50 × 1021 molecules of Prevacid?
The formula for nitrogen dioxide is NO₂. a. How many grams of nitrogen are present in 3.85 moles of nitrogen dioxide? grams b. How many moles of oxygen are present in 4.29 grams of nitrogen dioxide? moles
A sample of a compound has a total mass of 200.0 g. Phosphorus comprises 87.28 g of the sample while oxygen comprises 112.72 g. a. Find the percent mass of phosphorus and oxygen in the sample.b. Find the empirical formula of the compound. c. If the compound has a molar mass of 283.88 g/mol, what is the molecular formula?
Ibuprofen is an anti-inflammatory with the formula C13H18O2 A. What is the molar mass of ibuprofen? Express your answer using four significant figures. B. How many grams of ibuprofen are in 0.505 mole? Express your answer using three significant figures. C. How many moles of carbon are in 12.5 g of ibuprofen? Express your answer using three significant figures. D. How many moles of ibuprofen contain 1.42×1023 atoms of carbon? Express your answer using three significant figures. please solve all stepwise
A compound is found to contain 7.522% phosphorus and 92.47 % iodine by mass. a. What is the empirical formula for the compound? b. The molar mass for this compound is 411.7 g/mol. What is the molecular formula?
a. Calculate the number of moles in 21.7 mg of nitrogen dioxide. mol b. Calculate the number of moles in 1.70 g of copper(II) nitrate. mol c. Calculate the number of moles in 2.46 g of carbon disulfide. mol
Write the chemical formula for each compound, and then calculate the amount in moles in each sample. d. 78.1 kg of copper(II) sulfate pentahydrate
1. A student carried out a reaction between sodium bicarbonate and nitric acid three times. The masses of the samples of sodium bicarbonate were o.0398 g, 39.89 mg and 39.986 mg. Calculate the average mass. Select one: a. 119.7 mg b. o.0400 g C. 39.9 mg d. 39.89 mg e. 39.892 mg