C because the heart and lungs are involved with gases
We know it’s C because of what it says in the text
The solution 550 ml total and first we will find the amount of alcohol. 3% = 0.03 550 ml x .03 = 16.5 ml alcohol
Then to find the amount of water used, we just have to subtract the amount of alcohol from the total volume
550 ml total - 16.5 ml alcohol = 533.5 ml water
An element with an atomic number 12 has 12 protons.
atomic number=number of protons.
Both are mixtures, sand is made of all different substances combined together and baking soda is sodium, hydrogen, and carbonate.
