P1=836kPa
T1=54.7+273=327.7K
P2=836+79.9=915.9kPa
T2=?
T2=T1*P2/P1
=327.7*915.9/836
=359K=86 degree celsius
Answer:
B
Explanation:
the element is boron, therefore B is the symbol
Ten name if this compound is Potassium Oxide
Answer:
b. 0.453 mol
Explanation:
To convert atoms to moles, use Avogadro's number (6.022×10²³). Divide the amount of atoms that are given by Avogadro's number. You should get 0.453 mol.

PV=nRT
You are funding pressure and you have V = 9.45L, n = 1.9 moles, R = gas constant, and T = 228 K
P(9.45L) = (1.9moles)(0.0821)(228K)
Find P
Multiply
9.45P = 35.57
Divide
P = 3.76 L of N
Answer should be 3.76 liters of nitrogen