In order to prepare a 250 ml solution of CuSO₄ of 0.5 M we need to calculate the amount of CuSO₄ requires. So, as we know,
Molarity = Moles / Volume of Solution
Also,
Molarity = (Mass ÷ M.mass) / Volume of Solution
Solving for Mass,
Mass = Molarity × M.mass × Volume
Putting Values, ∴ 250 ml = 0.25 dm³
Mass = 0.5 mol.dm⁻³ × 159.6 g.mol⁻¹ × 0.25 dm³
Mass = 19.95 g
Step 2:
Take 19.95 g of CuSO₄, add it to volumetric flask and add distilled water upto the mark of 250 ml. The resulting solution will be of concentration 0.5 M.
The coefficient should be 3 because 2(N)H3 has 6 hydrogen atoms and 3H2 also has 6 hydrogen atoms
Answer : The amount of water lost was, 333.4 grams.
Explanation : Given,
Heat released = 753480 J
Formula used :
where,
Q = heat released = 753480 J
m = mass = ?
L = latent heat vaporization of water =
Now put all the given values in the above formula, we get:
Thus, the amount of water lost was, 333.4 grams.
Answer:
When fusion no longer generates enough pressure to counteract gravity, the star rapidly collapses to form a black hole.
hope it's clear!