What is the percent by mass of sodium chloride in a solution of 44G of NaCl dissolved in 756GH2O

Hey there!

First find the total mass of the solution.

756 + 44 = 800 grams

Then, find the percent that 44 grams is of 800 grams.

44 ÷ 800 = 0.055

0.055 x 100 = 5.5%

The percent of the solution that is NaCl is 5.5%.

Hope this helps!

out of these options:

ability to burn paper

pure sodium reacting violently with water

the boiling point of water

helium does not tend to react with anything

i would say this is a physical property:

helium does not tend to react with anything

why? :

i said helium does not tend to react with anything because well, it reacts to ! but ability to burn paper, pure sodium reacting violently with water, & the boiling point of water are chemical or

physical properties: the properties of a substance that can be observed without changing the chemical makeup of the substance

chemical properties: properties of a substance relating to the chemical nature and reactivity of the substance