Chapter 1
Chapter 2 Part 1
Chapter 2 Part 2
Chapter 3 Part 1
Chapter 3 Part 2
100

16.334 to the hundredths place.

16.33

100
If a compound that has a mass of 184 grams is found to contain 132 grams of carbon, what is the mass percent of carbon in this compound? Round to four significant figures.

71.74%

100

What is the ionic form of Lithium?

Li+

100
Convert 5.00 grams of Carbon to moles.

0.413 moles

100

A sample of an unknown compound contains 30.0g of carbon, 6.00g of hydrogen, and 14.0g of nitrogen. Using this information, find the empirical formula

C5H12N2

200

How many significant figures are in 0.00435?

Three significant figures.

200
How many protons are in phosphorus?
15 protons.
200

What is the ionic form of Calcium?

Ca2+

200

Convert 3.00 moles of carbon to atoms.

1.81x10^24 atoms of carbon

200
A compound with the empirical formula of CH2O is found to have the molar mass of 150.13 grams/mole. What is the molecular formula of the compound?
C5H10O5
300

Convert 3.554 kilograms to grams.

3554 grams. (or 3.554x10^3 grams).
300

How many neutrons are in Uranium-235

143 neutrons

300

Write the molecular formulas of sodium hydroxide, magnesium sulfate, and ammonium chlorate.

NaOH, MgSO4, and NH4ClO3

300
Convert 12.0 grams of sodium to atoms.

3.14x10^23 atoms.

300

Balance the following equation.

__FeCl3 + __Zn ----> __Fe + __ZnCl2

2FeCl3 + 3Zn ----> 2Fe + 3ZnCl2

400

Multiply the following numbers and tell me the number of significant figures.

3.556 x 2.33

8.29, 3 significant figures.

400

Rubidium has only two naturally occurring isotopes. Assuming Rb85 has a percent abundance of 72.2% and a mass of 85.0amu, and  Rb87 has a percent abundance of 27.8% and a mass of 87.0amu. What is the atomic mass of Rb?

85.6amu.

400

What is the systematic name for each formula? Fe(MnO4)3, NH4Cl, and CaCr2O7

Iron (III) permanganate, ammonium chloride, and Calcium Dichromate.

400

What is the mass percent of Fe in Fe(ClO4)2?

21.92% Fe

400

Balance the following equation.

__KMnO4 + __HCl ----> __KCl + __MnCl2 + + __Cl2 + __H2O

2KMnO4 + 16HCl ----> 2KCl + 2MnCl2 + 5Cl2 + 8H2O

500

There are 3 bits in a bot and 5 bings in a bong. How many bot/bings are in 13 bit/bongs? Round to 4 significant figures.

21.67 bot/bings.

500

Calculate the molar mass of the following compounds. KMnO4, NaCl, and BF3.

KMnO4 = 158.04 g/mol

NaCl = 58.44 g/mol

BF3 = 67.81 g/mol

500

What is the mass percent of O in Fe(ClO4)2?

50.25% O

500

Find the limiting reactant and how much product is made from the following reaction.

Aluminium (Al) reacts with Oxygen gas (O2) to produce Aluminium Oxide (Al2O3). You start the reaction with 25.0g of aluminium and 50.0g of Oxygen gas

4Al + 3O2 ----> 2Al2O3

Aluminium is the limiting reactant. 

0.463 moles Al2O3 = 47.2 grams Al2O3

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