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Wittaler [7]
3 years ago
15

3.

Chemistry
1 answer:
kari74 [83]3 years ago
7 0

Answer:

D

Explanation:

Elements in the same group of the periodic table do not have the same atomic size.

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what happens to the reaction 2NO2 <----> N2O4 + 57.2 kJ when the temperature of the reaction is increased?
ioda
1) Equilibrium reaction:

<span>2NO2 <----> N2O4 + 57.2 kJ

2) The quantity 57.2 kJ on the right side indicates that the reaction generates heat, i.e. it is exothermic.

When you increase the temperature of an equilibrium chemical  reaction that is exothermic you displace the equilibrium to the left, meaningh that more ractant will be formed..

Answer: the equilibrium will be displaced to the left producing more reatant, NO2.
</span>
7 0
4 years ago
The man is being warmed by?<br>radiation<br>convention<br>conduction<br>​
Lubov Fominskaja [6]

Answer:

Comvection

Explanation:

The movement causes the density to rise and therefore transfer more heat

6 0
3 years ago
What does D represent?
yuradex [85]

Answer:

The energy of the reactants.

3 0
3 years ago
What is the kinetic energy of a 25 kg object moving at a velocity of 2.5 m/s?
vovangra [49]

Answer:

<h2>78.13 J</h2>

Explanation:

The kinetic energy of an object can be found by using the formula

k =  \frac{1}{2} m {v}^{2}  \\

m is the mass

v is the velocity

From the question we have

k =  \frac{1}{2}  \times 25 \times  {2.5}^{2}  \\  = 12.5 \times 6.25 \\  = 78.125 \:  \:  \:  \:  \:  \:  \:  \:

We have the final answer as

<h3>78.13 J</h3>

Hope this helps you

6 0
3 years ago
Can anyone please help ME with Question 1
Vsevolod [243]
Enyzmes speed up all chemical reactions

(Just took an AP Bio test with this question on it)
3 0
3 years ago
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