Answer:
56
Explanation:
1 mole of gas at STP occupies 22.4 L of the gas
2.5 mole of the gas at STP occupies 22.4×2.5 L of the gas
so 2.5 mole of the gas at STP occupies 56 L of the gas .
Answer:
273 K, 101.3 kPa
Explanation: I just did the quiz
Answer:
First of all, no such element can form because the described one has a negative charge
Explanation:
The mass of the atom = neutrons + protons
= 16 + 14
= 30
if 105 grams burns completely
therefore
105 ×22.4/48=49
Gold is the best pure substance. The answer is gold