I think it's D but not sure
Answer:
To make baking powder, combine half a teaspoon of cream of tartar and a quarter teaspoon of bicarbonate of soda.
hope it helps;)
It should be a capital C with 4 dots, one on each side.
Answer:
Keq=0.866
Explanation:
Hello,
In this case, the undergone chemical reaction is:

In such a way, since 0.0055 mol of N₂O₄ remains in the flask, one infers that the reacted amount (
) was:

In addition, the produced amount of NO₂ is:

Finally, considering the flask's volume, the equilibrium constant is then computed as follows:

Best regards.
43 degrees
angle of reflection is equal to the angle of incidence