Answer:
measuring the isotopic composition of atmospheric co2 shows that the burning of fossil fuels has led to the co2 levels over the last 200 years.
Explanation:
pa brainliest po ty
Answer:
A “Lab Diamond” is just like a Natural Diamond, except instead of growing in the Earth, they grow in a lab. The only chemical difference between Lab Diamonds vs Natural Diamonds is that most Natural Diamonds contain tiny amounts of nitrogen, and Lab Diamonds do not.
Explanation:
As, overall order of reaction is 2 indicates the rate of reaction is only depending on concentration of A and its rate of reaction can be shown as:
R = K [A]^2
So, by increasing the concentration of A, the rate of reaction increases.
Just multiple 19.3 by 15 because cm^3 will cancel outand you are left with g with represents mass
If you mean lewis dot symbol you need a nuclide you get the number of proton (z) its equal to electrons since the atom is nutral then you make the elctron configuraion after that you take the number of electrons on the outer energy level( ex:k²L² in this case its the 2 on the L)and if you have 7 electrons and the atom is nitrogen so it becomes
_
:N:
.
Hope that helped
