Explanation:
pure substances are those substances which are made up of one elements
mixture that those substances which are made by more than two or three elements
Take 5 * 2/1 = 10 mol NO needed
10 mol * 30 g/mol = 300g
Answer C
Answer: 0.887 g of 
should be added to excess HCl(aq).
Explanation:
According to ideal gas equation:
P = pressure of gas = 805 torr = 1.06 atm (760torr=1atm)
V = Volume of gas = 235 ml = 0.235 L
n = number of moles = ?
R = gas constant =
T =temperature =
According to stoichiometry:
1 mole of chlorine is produced by = 1 mole of
Thus 0.0102 moles of chlorine is produced by = 
moles of
Mass of =
0.887 g of should be added to excess HCl(aq).
Answer:
5.4 M.
Explanation:
- At complete neutralization: It is known that the no. of millimoles of acid equal that of the base.
<em>(MV)acid = (MV)NaOH</em>
M of acid = ??? M, V of acid = 35.0 mL.
M of NaOH = 3.0 M, V of NaOH = 63.0 mL.
∴ M of acid = (MV)NaOH / (V)acid = (3.0 M)(63.0 mL)/(35.0 mL) = 5.4 M.
25mL if water as the highest average of the kinetic energy
