Answer: 2
Explanation:
To calculate the moles :
According to stoichiometry :
1 mole of are produced by = 4 moles of
Thus 1.18 moles of will be produced by= of
Mass of
Thus 85.0 g of will be required and 2 steps are required to get the answer.
I am not sure about the first question but the temperature has an important role in this situation because as the temp goes up particles moves at a faster speed and spread out every where.
Answer: True
Explanation: They are formed by the cooling and hardening of molten magma
Answer:
The concentration of the murexide solution is 0.0000745 M
Explanation:
From Beer-Lambert's law,
A = εlc
A = Absorbance = 28.65% = 0.2865
ε = molar absorptivity = 3847 M/cm
l = path length = 1cm
c = concentration in mol/L = ?
c = A/εl = 0.2865/(3847×1) = 0.0000745 mol/L
Hope this Helps!