What number of moles of o2 are needed to produce 14.2 grams of p4o10 from p? (molecular weight p4o10 = 284) (a) 0.0500 mole (b) 0.0625 mole (c) 0.125 mole (d) 0.250 mole (e) 0.500 mole

(D) 0.250 mole

Explanation:

From molecular weight we know that 1 mole of P4O10 wights 284 grams. So

In order to form 1 mole of P4O10 it is necessary 5 moles of O2,  so that the number of oxygen atoms are the same.

Knowing that 0.05 moles of P4O10 is formed we need 5 x 0.05 = 0.25 moles of O2

ammonium chloride & tallow

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2