Answer:
5 seconds
Explanation:
Speed x Time. So t=ds. t=51=5.
I can’t see the choices can you take another picture of this assignment please so i can help you
Your answer would be 172.1703 g/ml
One mole is always the same number: 6.02 * 10^ 23.
So, one mole of cars = 6.02 * 10 ^23 cars; one mole of pencils = 6.02 * 10^23 pencils; one mole of atoms = 6.02 * 10^23 atoms; one mole of molecules = 6.02 * 10^23 molecules.
So, all the options are correct: one mole of calcium ions has 6.02 * 10^23 representative particles, such as one mole of calcium nuclei and one of calcium atoms.
