My answer would be D for the most part evolution is a slow process
Answer:
The force is <u>1</u><u>.</u><u>5</u><u>N</u>
Explanation:
To balance the give n equation, we apply elemtal balance and count each elements per side. There are 2 nitrogens in the left side so there should be 2 moles of NO2. Since there are already 4 moles of O in the right side, there should be 2 moles of O2. Hence answer is a. <span>Place the coefficient 2 in front of oxygen and nitrogen dioxide.</span>
1 mole 6.023 x10^23 from avogadro laws which state that equal volume of a gases at the same temperature and pressure contain equal number of moles.
what about 4.589 x 10^23
=4.589 x10^23/6.023 x10^23=0.762moles
mass=molar mass x number of moles
18 x 0.762=13.716grams