What is the mass of NaCl required to make 160 grams of a 12% solution of NaCl in water?

0.5

L solution

⋅

required molarity



2.5 moles NaCl

1

L solution

=

1.25 moles NaCl

Now, to convert this to grams of sodium chloride, you must use the mass of

1

mole of this compound as a conversion factor. The mass of

1

mole of sodium chloride is given by its molar mass

1.25

moles NaCl

⋅

58.44 g

1

mole NaCl

=

73 g

−−−−

Explanation: if this is wrong i am very sorry

in scientific notation, the value of the  speed of light in a vacuum

  will be written as 2.995 * 10^8. when this value is represented in the form of

  a * 10^b, then, a = 2.995 and b = 8.

the value of the speed of light in a vacuum given above can also be rounded up to approximately 300000000. in this case, the scientific notation will be written as 3 *10^8.