As ice cools from 273 K to 263 K, the average kinetic energy of its molecules (1) decreases (2) increases (3) remains the same

What Is the percent by mass of sulfur In sulfur dioxide? (1) 32% (2) 33% (3) 50% (4) 67%

Which substance can be decomposed by a chemical change? (1) ammonia, (2) aluminum, (3) magnesium, (4) manganese.

What Kelvin temperature is equal to $-73^{\circ} C$? (1) 100 K (2) 173 K (3) 200 K (4) 346 K

Object A has less thermal energy than Object B, but heat flows from Object A to Object B. What conditions would make this possible?

The heat of fusion is defined as the energy required (at constant temperature) to change a (1) gas to a liquid, (2) gas to a solid, (3) solid to a gas, (4) solid to a liquid.

What is the percent by mass of oxygen in magnesium oxide (MgO)? (1) 20% (2) 40% (3) 50% (4) 60%

Dry ice (carbon dioxide) changes from a solid to gas at -78.5C. What is this temperature in F?

Which substance has a definite shape and a definite volume at STP? (1) NaCI(aq) (2) $\mathrm{Cl}_{2}(g)$ (3) $\mathrm{CCl}_{4}(\ell)$ (4) $\mathrm{AlCl}_{3}(\mathrm{s})$

Which factor distinguishes a metallic bond from an ionic or a covalent bond? (1) the mobility of electrons (2) the mobility of protons (3) the equal sharing of electrons (4) the unequal sharing of electrons

Different masses of copper and iron have the same temperature. Compared to the average kinetic energy of the copper atoms, the average kinetic energy of the iron atoms is (1) less (2) greater (3) the same

If 3.00 g of aluminum foil, placed in an oven and heated from $20.0^{\circ} \mathrm{C}$ to $662.0^{\circ} \mathrm{C}$, absorbs 1728 J of heat, what is the specific heat of aluminum? A. $0.131 \mathrm{J} / \mathrm{g} \cdot^{\circ} \mathrm{C}$ B. $0.870 \mathrm{J} / \mathrm{g} \cdot^{\circ} \mathrm{C}$ C. $0.897 \mathrm{J} / \mathrm{g} \cdot \mathrm{C}$ D. $2.61 \mathrm{J} / \mathrm{g} \cdot^{\circ} \mathrm{C}$ E. $0.261 \mathrm{J} / \mathrm{g} \cdot^{\circ} \mathrm{C}$

At STP, which element has a definite shape and volume? (1) Ag (2) Hg (3) Ne (4) Xe

As the temperature of a substance rises, the average kinetic energy of the particles making up the substance (1) increases, (2) decreases, (3) remains the same.