Question

answer the following.​

Answer 1

Explanation:

1) 6.022 × 10²³ atoms = 17 g of NH₃

  4.25 × 6.022 × 10²³/17 = 25.59 × 10²³/ 17 = 1.50 × 10²³ atoms

2) When an atom loses electrons, it is called a cation and has a positive charge.

3) The chemical symbol P stands for Phosphorus.

4) 1 mole of HNO₃ = 63 g

   2.53 × 1 / 63 = 0.040 moles

5) 7 × 6.022 × 10²³/14 = 3 × 10²³  

6)  no. moles of Al = 100/27 = 3.70  

    no. moles of Ca = 100/40 = 2.5

Hence the number of atoms present in the 100 g of Al will be more than atoms present in the Ca.