What si unit is used to measure the number of representative particles in a substance?

Which metal exist in liquid state and can be cut with knife?

Which numbers are used? Consider the balanced chemical equation that follows. You are asked to determine how many moles of water you can produce from 4.0 mol of hydrogen and excess oxygen.

What percentage of water vapour is in the air?

Judy poured herself a glass of ice water. After five minutes, Judy noticed water on the outside of the glass. What caused this water to form on the glass

How many grams of Fe2O3 will be produced from 24.0 g of Fe and 5.00 g of O2?

In Flask A, you reacted 7.23 g Mg with 1.05 mol HCl. In Flask B, you reacted 1.22 g Mg with 1.35 mol HCl. Which balloon will inflate the most?

I have 2 electrons is the first shell, 8 in the second, and 6 in the third

The production of plastics makes life, so it benefits society. On the other hand, the production of plastics causes air and water, so it also harms society.

The total number of moles represented by 20 grams of CaCO3 is

Particles of matter how have both potential and kinetic energy is that true or false?