Answer:
3.15 * 136 (136 is the molar mass of calcium sulfate). = 428 g CaSO4.
Explanation:
Answer: It would take 300 light years to reach Earth.
Explanation:
The answers is ATP it took me a long time to find it but here you go. hope i helped
Answer:
Lithium has 3 protons, 4 neutrons, 3 electrons, and its mass is 6.941 u
Answer: 1. Block
2. True ( I'm unsure. He arranged it according to mass, but he is credited for the periodic table)
3. Noble gasses
4. technetium
5. Alkaline earth metals
6. Number of protons
7. False
8. Not true: generally decreases as atomic number increases within a period
9. Argon
10. Four
11. False
12. False
Explanation:
