Answer:
<h3>The answer is 1.45 g/mL</h3>
Explanation:
The density of a substance can be found by using the formula
From the question
mass = 210 g
volume = final volume of water - initial volume of water
volume = 645 - 500 = 145 mL
We have
We have the final answer as
<h3>1.45 g/mL</h3>
Hope this helps you
Answer:
Molarity of solution is 0.0928 M.
Explanation:
Balanced equation:
Number of moles of in 10.8 mL of 0.0215 M solution
= = 0.000232 moles
Let's assume molarity of solution is S(M)
Number of moles of in 12.50 mL of S(M) solution
= = 0.0125S moles
According to balanced equation, 5 moles of react with 1 mol of
So, 0.0125S moles of react with moles of
Hence,
or, S = 0.0928
So, molarity of solution is 0.0928 M.
Answer:
k = 2.647 x 10-2 M-2 s-1
Explanation:
2NO(g) +Cl2(g) --> 2NOCl(g)
Experiment [NO] (M) [Cl2] (M) Rate (M/s)
1 0.0300 0.0100 3.4 x 10-4
2 0.0150 0.0100 8.5 x 10-5
3 0.0150 0.0400 3.4 x 10-4
Frrom experiments 1 and 3;
Reducing the concentration of NO by a factor of 2 decreases the rate of the reaction by a factor of 4. This means the reaction is second order with respect to NO.
From experiments 2 and 3:
Increasing the concentration of Cl2 by a factor of 4 increases the rate by a factor of 4. This means the reaction is first order with respect to Cl2
The rate equation is given as;
Rate = k [NO]² [Cl2]
From experiment 1;
k = [NO]² [Cl2] / Rate
k = 0.0300² * 0.0100 / 3.4 x 10-4
k = 2.647 x 10-2 M-2 s-1
Answer:
Friedrich Mohs who is a German mineralogist