Hey there
the answers are
A.
and
D. He could spray the fire extinguisher in the opposite direction of the space station
hope this helps
Answer:
hot air rises and expanded the balloon
Explanation:
thats it.
Answer:
b. 1.5 atm.
Explanation:
Hello!
In this case, since the undergoing chemical reaction suggests that two moles of A react with one moles of B to produce two moles of C, for the final pressure we can write:

Now, if we introduce the stoichiometry, and the change in the pressure
we can write:

Nevertheless, since the reaction goes to completion, all A is consumed and there is a leftover of B, and that consumed A is:

Thus, the final pressure is:

Therefore the answer is b. 1.5 atm.
Best regards!
A catalyst will ALWAYS increase the reaction rate so C
Answer:
Hey!
Your answer is Calcium Phosphate!
Explanation:
It is the substance/mineral that is mostly found in our teeth and bones!
HOPE THIS HELPS!!