Answer:
True. Ripening of a banana is a chemical change
Answer: A) Dialogue
Explanation: You didn’t really give me anything, so the best answer I would go with is A.
Answer:
group 1 - cations charge +1
group 7 - anions charge -1
Explanation:
Group 1 has one valence electron and will lose one electron to complete the octet.
Group 7 has 7 valence electrons and will accept an electron to complete the octet.
Answer:
False.
Explanation:
I am not completely sure, but I don't believe the earth is getting larger.
Answer:
72.71 %
Explanation:
For oxygen: mass % O = (mass of 1 mol of oxygen/mass of 1 mol of CO2) x 100. mass % O = (32.00 g / 44.01 g) x 100. mass % O = 72.71 %
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