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Whitepunk [10]
2 years ago
12

When exothermic reactions occur, ______________.

Chemistry
1 answer:
marusya05 [52]2 years ago
3 0

Answer:

heat energy is released into the surrounding

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To calculate the number of atoms present in 2.0 mol of an element you would:
Andrews [41]
<span>In order to figure out the number of atoms that are present in 2.0 mol of an element, you would multiply Avogadro's number of atoms per mole by 2.0 mole. Avogadro’s is the number of units in one mole of a substance equal to 6.022140857 × 1023.</span>
4 0
4 years ago
∆G° for the reaction of nitrogen with hydrogen to produce ammonia (see balanced chemical equation below) has a value of -33.3 kJ
Juliette [100K]

Answer:

-0.85KJ

Explanation:

Given N2(g) + H2(g) <--->2NH3(g)

Kp =[ P(NH3)]²/[P(H2)]³[P(N2)]

Where P is the pressure of the gas

P(H2)b= P(N2) = 125atm

P(NH3) = 200atm

Kp = 2²/(125)³(125)

Kp = 2.048 ×10^-6

∆G = -RTlnKp

R =0.008314 J/Kmol

T = 25 +273/= 298k

= 8.314 ×10^-3 × 298 × ln(2.048 ×10^-6)

= -0.008314 × 298 × (-13.099)

= 32.45KJ

∆G = ∆G° + RTlnKp

∆G = -33.3 + 32.45

∆G = -0.85KJ or -850J

3 0
4 years ago
Hydrogen bonds form between molecules containing _________ bonds; the hydrogen bond is between a hydrogen atom of one molecule a
nasty-shy [4]

Answer:

The answer is A. Polar covalent; negatively

Explanation:

Hydrogen bonds form between molecules containing polar covalent bond the hydrogen bond is been a hydrogen atom of one molecule and a partially negative charged atom of another.

Example H_{2}O (water):- It contain a slight positive charge on one side and a slight negative charge on the other.

5 0
3 years ago
Which of the following statements is NOT true about practice?
kobusy [5.1K]

Answer:

we need a picture

Explanation:

but you can ask the question again with one

5 0
3 years ago
How do we view large areas of earth’s surface?
ikadub [295]

Answer: Are there options? I think the answer is continents, but I don't really understand the question. Is continents an option?

Explanation:

6 0
3 years ago
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