●determine the number of representative particles in 0.250 mol of Magnesium?

●determine the number of moles present in 3.25×10^20 atoms of lead?

can anyone solve those questions plz?

1) 1.51 × 10²³  particles of Mg

2) 0.54 × 10⁻³  moles

Explanation:

Given data:

1)

Number of moles of Mg = 0.250 mol

Number of representative particles = ?

Solution:

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.

The number 6.022 × 10²³ is called Avogadro number.

1 mol = 6.022 × 10²³  particles

0.250 mol × 6.022 × 10²³  particles / 1 mol

1.51 × 10²³  particles of Mg

2)

Given data:

Number of moles of lead = ?

Number of atoms of lead = 3.25×10²⁰ atoms

Solution:

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.

The number 6.022 × 10²³ is called Avogadro number.

1 mol = 6.022 × 10²³  atoms of Pb

1 mol × 3.25×10²⁰ atoms of Pb / 6.022 × 10²³  atoms of Pb

0.54 × 10⁻³  moles

a). in this case, dh> 0 and sd> 0. if t becomes larger, the term "-tds" will become more negative. at some point, it is possible that -dts will be more negative than the dh is positive, and the reaction will become spontaneous. this is probably the correct answer, but you should look at all of the other possibilities and make sure of that.