Answer: A. 3.28 g of HCl
B. 6.30 g of 
Explanation:
To calculate the moles :
a)
According to stoichiometry :
1 mole of
require = 1 mole of
Thus 0.09 moles of
will require=
of
Mass of
b)
According to stoichiometry :
1 mole of
require = 2 moles of
Thus 0.05 moles of
will require=
of
Mass of
Given:
N2, volume of 1L of NH3 at STP
Required:
Grams of N2
Solution:
N2 + 3H2 -> 2NH3
Molar mass of N2 = 28g
From the ideal gas equation PV = nRT
n = PV/RT
n = (1 atm)(100 L)/(0.08206 L-atm/mol-K)(273K)
n = 4.46 mol of NH3
from the reaction, we need 2 moles of NH3 to get 1 mole of N2
4.46 mol NH3(1 mol N2/2 mol NH3) = 2.23 moles N2
2.23 moles of N2(28 g N2/1 mol N2) = 62.5g N2
Answer: The partial pressure of oxygen is 76.56 atm , partial pressure of carbon dioxide is 10.44 atm and the total pressure is 87 atm.
Explanation:
According to the ideal gas equation:'

P = Pressure of the gas = ?
V= Volume of the gas =

T= Temperature of the gas = 10°C = 373 K
R= Gas constant = 0.0821 atmL/K mol
n= moles of gas= 0.25 +0.034 = 0.284 moles

= mole fraction of oxygen=
,
=mole fraction of carbon dioxide=
partial pressure of oxygen = 
partial pressure of carbon dioxide= 
The partial pressure of oxygen is 76.56 atm , partial pressure of carbon dioxide is 10.44 atm and the total pressure is 87 atm.
Thermal emersion circulators is what it is called
The answer is D, it controls what comes in & out the cell, well i hope so!