Formula
V/T = V1/T1
Givens
V = 430 L
T = - 42 °C = - 42 + 273 = 231°K
V1 = ??
T1 = 18°C + 273 = 291°K
The pressure is a constant.
Solution
420/231 = V1/291 Multiply by 291
420*291 / 231 = V1
V1 = 122220 / 231
V1 = 521.1 L
Answer:
Temperature is not a chemical change because when a substance changes in temperature, its chemical makeup is not changing.
Answer: 448 mL of hydrogen gas.
Solution:
Now,according to reaction
1 mole of magnesium produces one mole of hydrogen gas.
Then 0.020 moles of magnesium will produce 0.020 moles of hydrogen gas.
Moles of 
gas : 0.020 mol
At STP, 1 mol of gas occupies 22.4 L
So volume of 0.020 mol of 
produced at STP :
= 22.4/times 0.020 = 0.448 L = 448 mL (1L=1000mL)
Answer:
chemical change
Explanation:
itit is a chemical change because they are both gases and gases mixed together would be chemical change
The Answer is D: Reactor products charge huge batteries.
