100

It’s getting hotin here.

400

300

200

500

100

In perfectbalance

400

300

200

500

100

Convert me.

400

300

200

500

100

Switzerland wasneutral too.

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200

500

100

Count me in.

400

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200

500

Column 1, 100

Convert this temperature to Kelvin:

305 °C

Column 1, 200

This is standard temperature in Kelvin and

Celsius.

Column 1, 300

The pressure of a gas at 45kPa and 12oC is lowered to 23kPa. What is the final temperature of the gas?

Column 1, 400

What is the final volume of a gas at 300K if the gas originally occupies 320 mL at 25 K?

Column1, 500

At 189 K and a pressure of 550 torr, a sample of nitrogen gas has a volume of 32.0 cm3. What volume does the gas occupy at 242 K and 675 torr?

Column 2, 100

State the Law of Conservation of Matter.

Column 2, 200

Complete an atom inventory for the following equation, then determine if the equation is balanced or not.

Li2O + H2O 2 LiOH

Column 2, 300

In order to balance this equation, what coefficient must be placed in front of water?

Fe2O3 + H2 → Fe + H2O

Column 2, 400

Show the coefficients used to balance the following chemical equation: H3PO4 + HCl → PCl5 + H2O

Column 2, 500

If you have 13 grams of N2, how many grams of NH3 will be created using the equation below?

N2 + H2→ NH3

Column 3, 100

How many feet are there in 7 miles?

1 mile = 5280 feet

Column 3, 200

Convert 26 grams of HF to moles.

Column 3, 300

How many liters are in 800 mL?

Column 3, 400

How many moles are present in 352 g of iron (III) oxide, Fe2O3?

Column 3, 500

How many grams are present in 1.43 moles of magnesium hydroxide, Mg(OH)2?

Column 4, 100

In the formula: (NH4)2SO3

The sulfite ion has a charge of (2-), therefore the ammonium

ion has a charge of this.

Column 4, 200

Write the formula for the ionic compound calcium oxide.

Column 4, 300

Write the formula for the ionic compound formed by the ions below.

Zn2+ OH-

Column 4, 400

Write the formula for the ionic compound formed by the ions below.

CO32- Al3+

Column 4, 500

Find the molar mass of strontium carbonate.

Column 5, 100

How many atoms are in 5Zn3(PO4)2?

Column 5, 200

How many neutrons are found in an isotope of

235U?92

Column 5, 300

What is the mass number of an atom with 19 protons and 23 neutrons in its nucleus?

Column 5, 400

Calculate the molar mass of Zn3(PO4)2

Column 5, 500

How many more neutrons are found in the nucleus of an iron atom with a mass number 55 than in the nucleus of a calcium atom with a mass number 39?