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2 years ago

Wich substances is most likely to form in a precipitation reaction?

Chemistry

1 answer:

Flura [38]2 years ago

4 0

Answer:

A precipitation reaction refers to the formation of an insoluble salt when two solutions containing soluble salts are combined. The insoluble salt that falls out of solution is known as the precipitate, hence the reaction's name.

Explanation:

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What is Heat? What is Cold?

krok68 [10]

Answer:

Heat is the process of something getting hot(temperatures going up). Cold is when something gets cold(temperature decreases).

Explanation:

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2 years ago

If a 520 mg sample of technetium-99 is used for diagnostic procedure, how much of Tc-99 remains after 30.0h? Half life of Tc-99

k0ka [10]

16.25 mg
I have attached an image of the half life formula.
In this problem, N0 would be 520, since that is the initial amount.
t = 30.0 Hours
t 1/2 = 6.0 hours
Now plug everything into the equation. You get 16.25 mg. No

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2 years ago

An experimenter found that for the hydrolysis of lactose, ΔH° = +0.44 kJ mol–1 and ΔS° = +0.031 kJ mol–1 K–1. ΔG°for this reacti

Ksivusya [100]

Answer:

ΔG° = -8.8 kJ/mol

Explanation:

The standard Gibbs free energy of reaction (ΔG°) can be calculated using the following expression.

ΔG° = ΔH° - T.ΔS°

where,

ΔH°: standard enthalpy of reaction

T: absolute temperature

ΔS°: standard entropy of reaction

At 298 K (the temperature that is usually used), ΔG° for the hydrolysis of lactose is:

ΔG° = ΔH° - T.ΔS°

ΔG° = 0.44 kJ/mol - 298 K × 0.031 kJ/mol.K

ΔG° = -8.8 kJ/mol

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2 years ago

Define the Coriolis effect and describe how it influences objects or fluids in each hemisphere

Vera_Pavlovna [14]

The Coriolis effect is the rotation of the water as it flows especially down a drain. In the northern hemisphere, water flows counter clockwise. Southern hemisphere, clockwise. <span>This effects the rotation of storms as well. </span>

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3 years ago

Read 2 more answers

When it is spring in China, it is ______ in South America

Vanyuwa [196]

I would say fall/ autumn in South America because they are in opposite hemispheres.

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3 years ago