How many neutrons does element X have if its atomic number is 25 and its mass number is 72?

Citric acid is one component of some soft drinks. Suppose that 8 L of solution are made from 0.24 g of citric acid, C6H8O7. What is the molarity of citric acid in the solution?

When the pressure changes from 1.21 atm to 2.52 atm, the volume changes from 3.75 L to 1.72 L and the temperature changes from 293 K to _ k

Select all that apply. A chimest is likely to do which of the following? A - analyze the ingredients in ice cream. B - determine why planets orbit the sun. C - determine how to separate gasoline from other substances in petroleum.

How many moles of c2h6o are in a 24.5 gram sample?

What kind of ions is contained in salts that produce an acidic solution?

In an oxidation-reduction reaction, what happens to the electrons in the reduction process? A. Electrons are bonded. B. Electrons are gained. OC. Electrons are lost. D. Electrons are replaced.

Describe the energy in nuclear fuel and the way in which it's converted to electrical energy.

What is the concentration of O2 (g), in parts per million, in a solution that contains 0.008 gram of O2 (g) dissolved in 1000. grams of H2O (l) ?

Give the mass percent of carbon in C14H19NO2?

Blank is the theory that explains how large pieces of earths outermost layer move and change shape