1. determine the number of atoms in 2.50 mol zn.
2.so molznxlmolo
"6.02x10

15.1  × 10²³ atoms

Explanation:

Given data:

Number of moles of Zn = 2.50 mol

Number of atoms = ?

Solution:

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.

For example,

18 g of water = 1 mole = 6.022 × 10²³ molecules of water

1.008 g of hydrogen = 1 mole = 6.022 × 10²³ atoms of hydrogen

For 2.50 mole of Zn:

one mole of zinc = 6.022 × 10²³ atoms

2.50 × 6.022 × 10²³ atoms

15.1  × 10²³ atoms

answer: h+ its less than oh

explanation:

acid rain does not usually kill trees directly. instead, it is more likely to weaken the trees by damaging their leaves, limiting the nutrients available to them, or poisoning them with toxic substances slowly released from the soil. the main atmospheric pollutants that affect trees are nitrates and sulphates.