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olchik [2.2K]
3 years ago
14

Please help!

Chemistry
2 answers:
BlackZzzverrR [31]3 years ago
7 0

Answer: I just took the quiz and the answer is <u>surface area</u>

antoniya [11.8K]3 years ago
5 0

Temperature

Increasing the Temperature. A chemical reaction will be sped up by adding heat energy thus raising the temperature

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what happens to the reaction 2NO2 &lt;----&gt; 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
determine the final temperature of a 10-0-g aluminum block originally at 25.0°C if you apply 435 joules of energy to it
mihalych1998 [28]
<span>Energy = Mass * heat capacity * temperature change so, 
</span>The energy added is 435 J and the temperature has to increase since the energy is added. 

<span>435 J = 10.0 g * 0.89 J/gC * temperature change </span>

<span>Temperature change = 48.9 C </span>

<span>The initial temperature is 25.0 C, the final temperature is 25.0 C + 48.9 C = 73.9 C.</span>
5 0
4 years ago
Calculate the volume of 0.684mol of carbon dioxide at s.t.p. show working
solong [7]

Answer: The volume of 0.684 mol of carbon dioxide at s.t.p. is 15.3 L

Explanation:

According to ideal gas equation:

PV=nRT

P = pressure of gas = 1 atm (at STP)

V = Volume of gas = ?

n = number of moles = 0.684

R = gas constant = 0.0821Latm/Kmol

T =temperature =273K   (at STP)

V=\frac{nRT}{P}

V=\frac{0.684\times 0.0821L atm/K mol\times 273K}{1atm}

V=15.3L

Thus the volume of 0.684 mol of carbon dioxide at s.t.p. is 15.3 L

6 0
3 years ago
A valid lewis structure of ________ cannot be drawn without violating the octet rule.
luda_lava [24]
A valid lewis structure of SO2 cannot be drawn without violating the octet rule.



correct me if i’m wrong.
7 0
3 years ago
Which property would most likely be the same when comparing two random samples of copper?
Darya [45]

Answer:

melting point and conductivity

Explanation:

as long as both samples are copper, it will melt at the same time, aswell as conduct electricity the same.

7 0
3 years ago
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