Question

Calculate the formula unit mass of K2o​

Answer 1

Answer:

O contains 2 moles of K. =6.711 moles. O =6.711×94=630.834 g =0.631 kg.

Answer 2

Answer:

$(\sqrt{7 } + \sqrt{6} ) ^{2} \div ( \sqrt{7 } - \sqrt{6})^ {2}$

see this gives the answer as

$13 + 2 \sqrt{42}$

likewise b 's answer will be

$13 - 2 \sqrt{42}$

so when we add a and b we get 26-26 remember(2/42) will be cut so the ultimate answer will be 0