1.B
6.D
D because t<span>he mass of one mole (molar mass) of helium gas is </span>4.002602 g/mol. 4.002602 * 5=20.01309. Rounded equals 20. So, the answer is D.20 g.
What best describes the result is a mixture
Answer:
Be
Explanation:
Reactivity increases from left to right and decreases from the top of the column to the bottom of column
