How many picograms are in 1 mg? In 35 ng?

When a metal bonds with a nonmetal, the bond that is formed is a (n) ___. ionic bond covalent bond chemical bond metallic bond

The specific silver is How many joules of energy are needed to warm 4.37 g of silver from 25.0 degrees * C to 27.5 degrees * C?

Calculate the ph of the resulting solution if 28.0 ml of 0.280 m hcl (aq) is added to

The change of seasons is an example of A. change that almost never happens. B. change that happens suddenly. C. change that has a pattern. D. change that cannot be expected.

The volume of an object is 4cm3 and its mass is 42g. What is its density?

Much of life on Earth is based in aquatic biomes. What property of water allows life to survive in liquid water?

A neutral atom of beryllium (Be) has an average mass of 9 amu and 4 electrons. How many neutrons does it have? 13 9 5 4

Calculate the maximum mass of carbon dioxide that could be obtained by adding excess hydrochloric acid to 15 g of calcium carbonate.

True or false: during dry weather, the water level in a small pond drops because of runoff.

Bradley hit a baseball with a bat. The baseball then hit a window and caused the window to break. Where did the energy that broke the window come from?