D - DNA provide the instruction and the ribosomes carry out the instruction .
Answer:
It is written exactly like that; Mg3N2
Explanation:
Roman numerals are used sometimes to show the charge of an ion that can be multiple charges.
If you mark those points on the phase diagram it appears to be moving from vapor to liquid. If you can’t see how I determined that please let me know and I can further explain.
Vapor to liquid is the same as saying gas to liquid, which I believe to be the correct answer.
Answer:
Molarity of
solution is 0.0928 M.
Explanation:
Balanced equation: ![5Fe^{2+}+MnO_{4}^{-}+8H^{+}\rightarrow 5Fe^{3+}+Mn^{2+}+4H_{2}O](https://tex.z-dn.net/?f=5Fe%5E%7B2%2B%7D%2BMnO_%7B4%7D%5E%7B-%7D%2B8H%5E%7B%2B%7D%5Crightarrow%205Fe%5E%7B3%2B%7D%2BMn%5E%7B2%2B%7D%2B4H_%7B2%7DO)
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, ![\frac{0.0125S}{5}=0.000232](https://tex.z-dn.net/?f=%5Cfrac%7B0.0125S%7D%7B5%7D%3D0.000232)
or, S = 0.0928
So, molarity of
solution is 0.0928 M.
Answer:
Cooling lowers the rate of the chemical reaction in the batteries.
Explanation:
When a battery is not in use and it may undergo some chemical changes which leads to decrease in its life (shelf life).
For example in case of Zinc battery, the zinc undergoes reaction with ammonia which deteriorate the cell or battery.
Now if we keep the battery in a cool place like refrigerator, the rate of chemical reaction will decrease (the rate of reaction generally decreases with decrease in temperature). Thus the battery stay fresh longer.