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inn [45]
3 years ago
5

Which of the following best describes an atom? For science

Chemistry
1 answer:
vladimir2022 [97]3 years ago
7 0

Answer:An atom consists of three sub atomic particles which are protons, neutrons, and electrons. Protons have a positive charge, neutrons have no charge, and electrons have a negative charge.

Explanation: because atoms are made up of particles

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The second-order rate constant for the dimerization of a protein (P) P + P → P2 is 6.2 × 10−3/M · s at 25°C. Part 1 out of 2 If
siniylev [52]

Answer:

r=1.59\times 10^{-10}\ M/s

Explanation:

According to the law of mass action:-

The rate of the reaction is directly proportional to the active concentration of the reactant which each are raised to the experimentally determined coefficients which are known as orders. The rate is determined by the slowest step in the reaction mechanics.

Order of in the mass action law is the coefficient which is raised to the active concentration of the reactants. It is experimentally determined and can be zero, positive negative or fractional.

The order of the whole reaction is the sum of the order of each reactant which is raised to its power in the rate law.

From the reaction given that:-

P+P\rightarrown P_2

The expression for the rate is:-

r=k[P]^2

Given that;- k= 6.2\times 10^{-3} /Ms

[P] = 1.6\times 10^{-4} M

Thus,

r=6.2\times \:10^{-3}\times \:\left(1.6\times \:\:10^{-4}\right)^2\ M/s=1.59\times 10^{-10}\ M/s

8 0
3 years ago
Which property of matter is conserved in chemical reactions and shown by balanced equations? mass volume density shape
den301095 [7]

Answer:mass

Explanation:

I took the quiz

3 0
3 years ago
Read 2 more answers
Which statement best compares potential and kinetic energy?
VMariaS [17]

Answer:

nombres uno

number 1

Explanation:

it is what it is according to physicodeferigolical

4 0
3 years ago
Help me with my work please
blsea [12.9K]

Answer:

i am pretty sure it is compound

8 0
3 years ago
How many atoms of gold are in a pure gold coin weighing 12.0g?
grigory [225]
12.0g x 1 mol / 63.546g = 0.188839581mol 

<span>So, for every 1 mole, we have 6.022 x 10^23 of whatever we're measuring. This gives us a conversion factor of (1 mole / 6.022 x 10^23 atoms) or (6.022 x 10^23 atoms / 1 mole).
</span>
0.188839581 mol x (6.022 x 10^23 atoms) / 1 mol = 1.137191955 x 10^23 

<span>Remember from before that we are limited to 3 significant figures. Since our calculations are complete, we can now round down to: 1.14 x 10^23 </span>

<span>That should be your answer!

Hope it helps!
xo</span>
3 0
3 years ago
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