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3 years ago

The colour imparted to a flame by calcium ion?

Chemistry

1 answer:

igor_vitrenko [27]3 years ago

7 0

I not sure, but i know that is soft yellow no white not yellow.

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What are the characteristics of Venus? (Select all that apply)

Leya [2.2K]

Answer:a/c

Explanation:

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3 years ago

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Aqueous solutions of ammonium sulfide and potassium hydroxide are mixed. Precipitate:

IceJOKER [234]

Answer:

Chemical Equation: (NH4)2S(aq) + 2KOH(aq) -> K2S(aq) + 2NH4OH(s)

Complete Ionic Equation: 2NH4^+(aq) + S^2-(aq) + 2K^+(aq) 2OH^-(aq) -> 2K^+(aq) + S^2- (aq) + 2NH4OH(s) 2NH4^+(aq) + OH^-(aq) -> NH4OH(s)

Explanation:

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3 years ago

What species is reduced in the reaction below?

lesya692 [45]

Answer: The correct option is D) $Ag^+$

Explanation:

The oxidation reaction is defined as the reaction in which a chemical species loses electrons in a chemical reaction. It occurs when oxidation number of a species increases.

A reduction reaction is defined as the reaction in which a chemical species gains electrons in a chemical reaction. It occurs when oxidation number of a species decreases.

For the given chemical reaction:

$Zn^0+2Ag^+\rightarrow Zn^{2+}+2Ag^0$

On the reactant side:

Oxidation number of Zn = 0

Oxidation number of Ag = +1

On the product side:

Oxidation number of Zn = +2

Oxidation number of Ag = 0

As the oxidation number of Ag is decreasing from +1 to 0. Thus, $Ag^+$ is getting reduced.

Hence, the correct option is D) $Ag^+$

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3 years ago

What do blizzards consist of? (Select all that apply)

Maru [420]

Answer:

Heavy Snowfall

High Winds

Extremely Low Temperatures

Reasoning:

Lots of snow, kinda self explanatory

high winds are needed to carry the snow that fast

its has to be below freezing for snow to even form

7 0

2 years ago

How should the enthalpy of an intermediate step be manipulated when used to produce an overall chemical equation?

White raven [17]

The enthalpy of an intermediate step should be manipulated when used to produce an overall equation by using the Hess's law. You could multiply the enthalpy by -1 if this equation is reversed in theory.

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3 years ago