Help answer the question about Dhg Achromat
PLEASE HELP ME WITH THESE I HAVE A MAJOR TEST AND I NEED HELP UNDERSTANDING THEM!?
Here are some questions that i need help with 1.) Which substance has the lowest density? A.H2O(g)b. H20(l)C.Hg(l)Dhg(g) 2. A volatile liquid A. hast strong attractives forces between particles. B. evaporated readily C.has no odor D.Is ionic 3. Whenever a liquid changes to a vapor, it A. absorbs energy from its surroundingsB. in in equilibrium with its vapor C. Is boilingD.is condensing 4. pressure is the force per unit A.Volume B.Surface area C. vacuum pump D. depth 5. Thre samples Dhg Achromat of gas each evert 740. mm Hg in seperate 2 L containers. What pressure do they exert if they are places in a single 2L container ? A. 247 mm HgB. 740mm HGC. 1.48X 10^3 D. 2.22 X 1063 6.If the temperture of a fixed quanity of gas decreases and the pressure reamins unchanges. A. if the volume increases B. its volume is unchanged. C. uts volume decreases D. its density decreases 7. a sample of oxygen pccupies 560. ml when the pressure is 800.00 mm hg. At constant temperture, what volume does the gas occupy when the pressure decreases to 700.0 mm?A.80.0 mLB. 490 mL C. 600 mL D. 640 mL 8. The volume of a gas is 5.0 L when the temperture is 50.0 degrees C. If the temperture is increased to 10.0 degrees C without chaning the pressure, what is the new volume? A. 2.5 LB. 4.8 LC. 5.1 LD. 10.0 L 9. Why does the air pressure inside the tires of a car increase when the car is driven? A. Some of the air has leaked out B. the air partiucles collide with the tire after the car is in motion C. The air particles inside the rire increase their speed because their temperture rises. D. the atmosphere compresses the tire.