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Chapter 3: Q70 E (page 172)
What mass of a 4.00% NaOH solution by mass contains 15.0 g of NaOH?
375 g solution of 4.00 % \(NaOH\)contains 15.0 g of\(NaOH\).
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Compare 1 mole of H2, 1 mole of O2, and 1 mole of F2.
(a) Which has the largest number of molecules? Explain why.
(b) Which has the greatest mass? Explain why.
Calculate the molecular or formula mass of each of the following:
(a)P4
(b)H2O
(c) Ca(NO3)2
(d) CH3CO2H (Acetic acid)
(e) C12H22O11(Sucrose, cane sugar)
The approximate minimum daily dietary requirement of the amino acid leucine, C6H13NO2, is 1.1 g. What is this requirement in moles?
Which contains the greatest number of moles of oxygen atoms: 1 mol of ethanol (C2H5OH), 1 mol of formic acid (HCO2H), or 1 mol of water (H2O)? Explain why.
What is the molecular formula of a compound with a percent composition of 49.47% C, 5.201% H, 28.84% N, 16.48% O, and a molecular mass of 194.2 amu?
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