Question

1:-Find number of moles in 7g of Oxygen
2:-Find no. of atoms in 2 mole of Nitrogen atom
K_it is actually kitty
3:-Find the mass of 6.022×10²³mole of Oxygen atom ​

Answer 1

Answer:

No

K.it is Kid <(＿　＿)>

Just like me

he is lame /_ \

Explanation:

Answer 2

Answer:

1) The number of moles in 7 g of oxygen is 0.22 moles.

2) The number of atoms in 2 moles of nitrogen atom is $12.044*10^{23}$.

3) Mass of $6.022*10^{23}$ mole of oxygen atom is $96.352*10^{23}$.

Explanation:

1) Given mass = 7 g

Molar mass = 32 g/mol

Number of moles = given mass/molar mass  

                            = $\frac{7}{32}$

                           = 0.22 moles

2) 1 mole of Nitrogen atom contains $6.022*10^{23}$ atoms

2 mole of Nitrogen contains $2*6.022*10^{23}$ atoms

                                             = $12.044*10^{23}$ atoms

3) Mass of 1 mole of oxygen atom is 16 g

Mass of $6.022*10^{23}$ mole of oxygen atom is $16*6.022*10^{23}$

                                                                      = $96.352*10^{23}$