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Nutka1998 [239]
4 years ago
14

When we reverse a chemical equation,we multiply it's delta H value by

Chemistry
1 answer:
Illusion [34]4 years ago
7 0
Delta H is negated. Multiply by -1
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Pani-rosa [81]

Answer:

B. +5

Explanation:

4 0
3 years ago
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After an electric sign is turned on, the temperature of its glass goes from 23.5°C to 65.5°C. The sign’s glass has a mass of 905
julia-pushkina [17]

The sign's glass absorbed 25466.7 J

<h3>Further explanation</h3>

Given

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mass = 905 g

the specific heat capacity = 0.67 J/g °C

Required

Heat absorbed

Solution

Heat absorbed by sign's glass can be formulated :

\tt Q=m.c.\Delta T

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3 years ago
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An atom of nitrogen has seven electrons. I hitch diagram correctly represents the arrangement of these electrons?
Alex787 [66]

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C.

Explanation:

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8 0
4 years ago
Which is true of the enthalpy of a reaction?
salantis [7]

Answer: I think it's B

6 0
2 years ago
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Marrrta [24]

Label each statement with its corresponding type of scientific knowledge.


law

theory

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8 0
3 years ago
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