Given the three-step "blast furnace" process that converts iron ore, $\mathrm{Fe}_2 \mathrm{O}_3$, into molten "pig iron":

$$\begin{aligned} & 3 \mathrm{Fe}_2 \mathrm{O}_3(l)+\mathrm{CO}(g) \rightarrow 2 \mathrm{Fe}_3 \mathrm{O}_4(l)+\mathrm{CO}_2(g) \\ & \mathrm{Fe}_3 \mathrm{O}_4(l)+\mathrm{CO}(g) \rightarrow 3 \mathrm{FeO}(l)+\mathrm{CO}_2(g) \\ & \mathrm{FeO}(l)+\mathrm{CO}(g) \rightarrow \mathrm{Fe}(l)+\mathrm{CO}_2(g) \\ & \end{aligned}$$

What mass of $\mathrm{Fe}_2 \mathrm{O}_3$ produces $1.00$ metric ton (1000 kg) of iron?

a. $175 \mathrm{~kg}$

b. $699 \mathrm{~kg}$

c. $715 \mathrm{~kg}$

d. $1430 \mathrm{~kg}$

e. $2860 \mathrm{~kg}$

State the physical quantity corresponding to the following metric unit.

$$\mathrm{cal} /\left(\mathrm{g} \times{ }^{\circ} \mathrm{C}\right)$$

State the physical quantity corresponding to the following metric unit.

$$\mathrm{g} / \mathrm{mL}$$

State the physical quantity corresponding to the following metric unit.

$$\mathrm{m} / \mathrm{s}$$

Select the key term that corresponds to the following definition.

a. aqueous solution (aq)

b. Avogadro’s number

c. Avogadro’s theory

d. combined gas law

e. density

f. directly proportional

g. empirical formula

h. ideal gas constant

i. ideal gas law

j. inversely proportional

k. law of conservation of mass

l. law of definite composition

m. limiting reactant

n. mass/mass percent (m/m %)

o. molarity (M)

p. molar mass (MM)

q. molar volume

r. mole

s. mole ratio

t. molecular formula

u. standard temperature and pressure (STP)

v. stoichiometry

______ the volume occupied by 1 mole of gas at STP

A group of statements that exist within a program for the purpose of performing a specific task is a(n) __________. a. block b. parameter c. function d. expression

If a sample of methane gas reacts completely with oxygen gas to give 1.75 gram of water, what STP volume of methane reacted?

$$\mathrm{CH}_4(g)+\mathrm{O}_2(g) \stackrel{\text { spark }}{\rightarrow} \mathrm{CO}_2(g)+\mathrm{H}_2 \mathrm{O}(l)$$

a. $0.352 \mathrm{~L}$

b. $0.703 \mathrm{~L}$

c. $1.09 \mathrm{~L}$

d. $2.18 \mathrm{~L}$

e. $4.35 \mathrm{~L}$

State the physical quantity corresponding to the following unit.

$$\mathrm{kJ}$$

State the physical quantity corresponding to the following unit.

$$\mathrm{K}$$

State the physical quantity corresponding to the following unit.

$$\mu \mathrm{s}$$

State the physical quantity corresponding to the following unit.

$$\mathrm{mm}^3$$

State the physical quantity corresponding to the following unit.

$$\mathrm{ng}$$

State the physical quantity corresponding to the following unit.

$$\mathrm{mm}$$

Write a program that will ask the user to enter the amount of a purchase. The program should then compute the state and county sales tax. Assume the state sales tax is 5 percent and the county sales tax is 2.5 percent. The program should display the amount of the purchase, the state sales tax, the county sales tax, the total sales tax, and the total of the sale (which is the sum of the amount of purchase plus the total sales tax). Hint: Use the value 0.025 to represent 2.5 percent, and 0.05 to represent 5 percent.