## kweenlexis one year ago A proton has a mass of A. 0.0005489 gram. B. 1 atomic mass unit. C. 0.0005489 atomic mass unit. D. 1 gram.

1. swolesammy

B

2. parker.goodbar

B

3. kweenlexis

ok ty

4. kweenlexis

Which is a substance made up of only one kind of atom? A. compound B. solution C. element D. mixture

5. Michele_Laino

mass of proton is: $$1.66 \cdot {10^{ - 27}} \; grams$$

6. swolesammy

C