Match the symbols with the element name.

1 Ag

zinc

2. Pb

silver

3. o

chlorine

ο

nitrogen

oxygen

ο

lead

Ο

carbon

7. Ar

argon

8. Zn

5. If an element has 12 protons and 17 neutrons, how many electrons must it have?

What is the volume of 1.2 moles of oxygen gas (o2) at 295 k and 1.2 atm? 18 l 22 l 24 l 78 l

Jill and Scott both road their bikes for 30 minutes. Jill traveled 5 kilometers and Scott traveled 10. Calculate each person's speed and tell who rode faster. (s=d/t) Question 6 options:

5. A 28.4 g sample of aluminum is heated to 39.4 °C, and placed in a calorimeter containing 50.0 g of water. The temperature of water increases from 21.00 °C to 23.00 °C. What is the specific heat capacity, C, of aluminum?

Which are requirements for forming petroleum? Check all that apply. oxygen heat time pressure steam

1.4 Explain why it is important to support individuals to challenge information about services that may present a barrier to participation

Which describes energy changes during nuclear fission? A very large amount of energy is produced from a tremendous mass. EEUU A very large amount of energy is produced from a very small mass. G .

A 0.75mol calcium carbonate (CaCO3) pellet has what mass?

The pH of the acid in the stomach is 2. When a person has heartburn, the acid in their stomach is coming up the esophagus (lower throat) and burning the lining of the esophagus. Why would a person take an Alka Seltzer tablet for heartburn?

Calculate the photon energy (in joules) for the light emitted from the hydrogen atom if ninitial = 4 and nfinal = 2.