Question

about 75% of the sun’s mass comes from hydrogen, which amounts to about 1.5×10^30 kilograms of hydrogen. use this mass to calculate how many hydrogen atoms are in the sun. which scientist do you agree with? (1.5×10^30)÷(1.7×10^ - 27) 8.823529412e+56 1.5×10^30÷1.7×10^ - 27 882.3529412

Explanation:

Step1: Recall mass - atom relationship

To find the number of atoms, divide total mass by mass of one atom. The mass of a hydrogen atom is approximately $1.7\times 10^{- 27}$ kg and the total mass of hydrogen in the sun is $1.5\times 10^{30}$ kg.

Step2: Perform division operation

The number of hydrogen atoms $n=\frac{1.5\times 10^{30}}{1.7\times 10^{-27}}$. Using the rule of exponents $\frac{a^m}{a^n}=a^{m - n}$, we have $n=\frac{1.5}{1.7}\times10^{30-(-27)}=\frac{1.5}{1.7}\times10^{57}\approx0.88235\times 10^{57}=8.8235\times 10^{56}$ atoms.

Answer:

$8.8235\times 10^{56}$ atoms