If I have 38g of MgCl2, how many moles do I have?

0.3991

Explanation:

no. of moles = mass/molar mass.

so lets get the molar mass of MgCl2

(Mg=24.305 and Cl=35.453) so the molar mass of MgCl2= 24.305+(2*35.453)

molar mass of MgCl2= 95.211

now lets get the no of moles:

no of moles=38g/95.211=0.3991

We can’t you if you only tell us that you have to show us what the answers are

Firstly, the water in the dams hold gravitational potential energy as they are above ground level. the gravitational potential energy is then transferred to kinetic energy as it falls, spinning the turbinethe turbine then spins the generator, which is a large magnet surrounded by metal coils. by doing this, the generator generates electricity. in this action, the energy transfer taken place is kinetic to electric energy