What is the density if

a sample of rock has a mass of 69

g and a volume of

23

ml?

How does elevation affect atmospheric pressure

Compare how two types of mountains are formed.

How long have orca whales been on the endangered species list?

When aqueous solutions of K3PO4 and Ba (NO3) 2 are combined, Ba3 (PO4) 2 precipitates. Calculate the mass, in grams, of the Ba3 (PO4) 2 produced when 1.2 mL of 0.152 M Ba (NO3) 2 and 4.2 mL of 0.604 M K3PO4 are mixed.

Which is the correct Lewis dot structure of NH2? H-N-H H-N-H A. B. N-H-H H-N-H c. D. •H-N-H. =. ОА. А OB. B Ос. с OD D OE. E

What will most likely happen when a warmer air mass exists above a polar ice sheet? The temperature of the ice sheet will be lowered. Heat will be transferred from the air mass to the ice. The air mass will exert high pressure and rise upwards.

A 2.00 L sample of gas at 35 C is to be heated at constant pressure until it reaches a volume of 5.25 L. To what Kelvin temperature must this sample be heated?

Of the following reactions, which one produces oxygen gas? Fermentation Anaerobic respiration Aerobic respiration Photosynthesis

Describe the electrodes in this iron-copper galvanic cell.

What happens to wood when it burns?