Which of the following for an object should be known to calculate its density?

The heat present in it

The amount of matter in it

The force of gravity acting on it

The space between the object and another object

What is the chemical compound for FeBr2

Working with SI (metric) Units For each of the following commonly used measurements, indicate its symbol. liter gram milliliter kilogram meter centigram milligram centimeter kilometer second millimeter milliseconds

Suppose that the uncertainty in determining the position of an electron circling an atom in an orbit is 0.4 A. What is the uncertainty in its velocity

What's the percent by mass of 3.55g NaCL in 91.55g of solution

a car manufacturer claims that since their car engines dont get very hot, more of the gasolines energy can be used to make the car move. what law is related to this claim?

Explain why a piece of aluminum or magnesium can be used to remove tarnish, which is mostly silver sulfide, on silverware.

Why is it important for an engineer who is designing a new home-cooling/heating system to have knowledge about the transfer of heat?

Ammonia and oxygen react to form nitrogen monoxide and water, like this: 4NH3 (g) + 5O2 (g) → 4NO (g) + 6H2O (g) Also, a chemist finds that at a certain temperature the equilibrium mixture of ammonia, oxygen, nitrogen monoxide, and water has the

What is the name of the outermost layer that forms a boundary around the outside of each cell

Intact cells of two unknown cell types were placed into solutions with different concentrations of NaCl. Type I cells swelled and burst in the solution with the lowest concentration of NaCl.