Use the conversion factor 1amu=6.66054 x 10^-24 to answer the following questions.. a) 1.674 x 10^-24 g of neutrons is how many amu? . b)what is the mass in grams of one lithium atom(lithium has an atomic weight of 6.94 amu). c)6.492 x 10^-23 g of potassium is how many amu?

Answer :

(a) The number of amu is 1.008 amu.

(b) The mass of one lithium atom is

(c) The number of amu is 39.09 amu.

Explanation :

As we are given that conversion factor:

(a) To calculate the number of amu.

As, of neutrons = 1 amu

So, of neutrons =

Thus, the number of amu is 1.008 amu.

(b) To calculate the mass of one lithium atom.

As, 1 amu of lithium atom =

So, 6.94 amu of lithium atom =

Thus, the mass of one lithium atom is

(c) To calculate the number of amu.

As, of neutrons = 1 amu

So, of neutrons =

Thus, the number of amu is 39.09 amu.

every chemical equation adheres to the law of conservation of mass, which states that matter cannot be created or destroyed. therefore, there must be the same number of atoms of each element on each side of a chemical equation.