Answer:
b
Explanation:
An acid-base titration is an experimental procedure used to determined the unknown concentration of an acid or base by precisely neutralizing it with an acid or base of known concentration. ... It is filled with a solution of strong acid (or base) of known concentration.
Answer:
See explanation
Explanation:
a) Isotopes are variants of one chemical element which (such as Nitrogen in this case). Those variants differ in <u>neutron number</u> and <u>nucleon number</u>.
This is also the reason why they have <u>different masses</u>. Isotopes are different physically to their original atoms.
b) All isotopes of a given element have the same number of protons and electrons. All the isotopes have the same atomic number as the original element. Isotopes are almost the same chemically.
c) The 14 in the name of Nitrogen-14, means it has a mass of 14u ( while Nitrogen 15 has a mass of 15 u). Nitrogen-14 will have the greatest affect on the average atomic mass, this because of the 95% abundance.
Nitrogen has an average atomic mass of 14.0067 u. This is the closest to 14, what shows nitrogen-14 has the biggest affect.
The average atomic mass is calculated as following: 14*0.95 +15*0.03 + 16*0.02 =14.07 u
d) Both are isotopes, but of another element. They both have a mass of 14 u. Bu they have a different number of neutrons: Oxygen-14 has 6 neutrons and 8 protons while Nitrogen-14 has 7 neutrons and 7 protons. This means oxygen-14 and nitrogen-14 are not isotopes, since isotopes do have the same number of neutrons.
Answer:
If m or n is zero, the reaction is zero order in A or B, respectively, and the rate of the reaction is not affected by the concentration of that reactant. The overall reaction order is the sum of the orders with respect to each reactant. If m = 1 and n = 1, the overall order of the reaction is second order
(m + n = 1 + 1 = 2).
Explanation:
Answer:
The correct answer according to the uniformity the difference is whether you can distinguish more than one part in the mixture.
Explanation:
A homogeneous mixture is one in which with the naked eye or with a microscope no different parts can be distinguished. Its composition and properties are the same at all points, the substance is uniform.
In a heterogeneous mixture, we can observe different parts. Its composition is variable. It can be broken down into simpler substances by physical processes. The substance, in this case, is not uniform.
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Answer:
I believe it is d but the letter on the chart is e so your answer option is option d.
Explanation: