Energy changes form or is transferred through the action of forces. An example of kinetic energy changing to potential energy is
1 answer:
You might be interested in
This is an incomplete question, here is a complete question.
How many milliliters of 2.15 wt% dimethylglyoxime solution should be used to provide a 50.0% excess for Reaction 7-2 with 0.998 4 g of steel containing 2.07 wt% Ni? Assume that the density of the dimethylglyoxime solution is 0.790 g/mL.
Answer : The volume of solution is, 7.195 mL
Explanation :
First we have to calculate the mass of Ni.
Mass of Ni =
Now we have to calculate the moles of Ni.
Now we have to calculate the moles of dimethylglyoxime.
As we know that 1 mole of Ni requires 2 moles of dimethylglyoxime.
So, 0.0003509 mole of Ni requires (0.0003509×2=0.0007018) moles of dimethylglyoxime.
For 50% excess reaction number of moles of dimethylglyoxime = 0.0007018 × 1.5 = 0.0010527 g
Now we have to calculate the mass of dimethylglyoxime.
Molar mass of dimethylglyoxime = 116.12 g/mole
Now we have to calculate the weight of solution.
As, 2.15 g of dimethylglyoxime present in 100 g of solution
So, 0.1222 g of dimethylglyoxime present in of solution
Now we have to calculate the volume of solution.
Volume of solution = 7.195 mL
Therefore, the volume of solution is, 7.195 mL