Which of the following is true about ions

What is the meaning of radioactive substance

a gas sample at 45 C has a pressure of 123 kPa. if the gas is cooled to 30 C, what is the new pressure?

If 3.64 g of sand is separated from 5.24 g of a mixture of salt and sand, what is the percentage of sand in the sample?

iron will react with oxygen to produce Fe2O3. how many grams of Fe2O3 will he produced if 0.18 mil of Fe reacts?

Electrically neutral atoms of the same element must A. contain the same number of neutrons B. have the same mass number C. contain the same number of protons D. have equal numbers of protons and neutrons

When does a spring tide take place? At the beginning of spring Only during the spring season Only after spring is over At any time

The highest cloud are known as

What is the mass of 4.85 X 10^22 atoms of iron (Fe) ?

If element x has 95 protons how many electrons does it have

Which of the following when dissolved in deionized water would make a good conducting solution? a) methanolb) sugarc) baking soda