Reference no: EM13943926
1- Using your own words explain what the Avogadro's number represents
2- How many molecules of water are in 3.5 moles of the liquid?
3- How many molecules of CO are in 0.5 moles of the gas?
4- How many molecules of NaCl are in 10 moles of the salt?
5- If a balloon contains 4.3 x 1025 molecules of CO2, how many moles of the gas are in the balloon?
6- A beaker contains 1.5 x 1020 molecules of alcohol, how many moles of alcohol are in the beaker?
7- Calculate the molar mass of
a) NaCl (sodium chloride)
b) C6H12O6 (glucose)
c) C2H6O (ethanol)
d) HCl (hydrochloric acid)
e) C16H18N2O4S (penicillin G)
f) C19H28O2 (testosterone)
8- Classify as True or False. Explain if False
a) As a mole always has the same number of particles, one mole of two different substances have the same volume.
b) A mole of sulfur has less mass than a mole of lithium
c) A mole of potassium dichromate (K2Cr2O7) has a mass of 394.2 g
d) A mole of sucrose (C12H22O11) has a mass of 342.3 g
9- Questions and problems. Equations for chemical reactions, page 227. Answer the 7.28, 7.30, and 7.32
10- Questions and problems. Types of reactions, page 232. Answer 7.34, 7.36, and 7.38
11- Balance the following equations:
d) Al2(SO4)3 + Ca(OH)2 Al(OH)3 + Ca(SO4)
f) Hg(OH)2 + H3PO4 Hg3(PO4)2 + H2O
12- Let's suppose that in reaction d), question above, the initial amount of Ca(OH)2 is 370 g and enough Al2(SO4)3 is available. How much Al(OH)3 is produced?
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Explain what the avogadro''s number represents
: 1- Using your own words explain what the Avogadro's number represents 2- How many molecules of water are in 3.5 moles of the liquid? 3- How many molecules of CO are in 0.5 moles of the gas? 4- How many molecules of NaCl are in 10 moles of the salt?
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