Answer:
1. C. helium
2. D. oxygen and acetylene
3. B. deliquescence
4. C. cutting very hard surfaces
5. B. 3.5%
Explanation:
Answer:
i try to solve it for you, and i aplode a similer question for you
Explanation:
They form ions of -ve charge
Tbh i cant really see the words do u ming taking an upclose picture?