3 years ago

What two things are conserved in a chemical reaction?

Chemistry

1 answer:

Sloan [31]3 years ago

3 0

Mass and atoms are the properties conserved in every ordinary chemical reaction.

Hope this helps!

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Cold packs, whose temperatures are lowered when ammonium nitrate dissolves in water, are carried by athletic trainers when trans

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Answer:

d. ΔH° > 0, process is endothermic.

Explanation:

Cold packs contain ammonium nitrate (NH₄NO₃). When this salt dissolves in water, it decreases the temperature of the surroundings. This happens because the process is endothermic (absorbs heat from the surroundings). By convention, when a process is endothermic, the standard enthalpy carries a positive sign (ΔH° > 0).

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2 years ago

If an atom has 18 protons, 15 neutrons, and 22 electrons, what is the atom's electrical charge?

PSYCHO15rus [73]

Charge = number of proton - number of electron = 18-22 = -4

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3 years ago

Each periods starts with a strong metal except the first period true or false

aleksandr82 [10.1K]

Answer: True

Explanation:

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2 years ago

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2 years ago

Consider the following reaction: SO2Cl2(g)⇌SO2(g)+Cl2(g) A reaction mixture is made containing an initial [SO2Cl2] of 2.2×10−2M

lukranit [14]

I think you want to ask about Keq. At equilibrium, we can know [SO2Cl2] is 2.2*10-2 M -1.3*10-2M=9*10^-3 M. And [SO2]=[Cl2]. So the Keq=1.88*10^-2.

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3 years ago