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Leni [432]
3 years ago
13

Which description applies to all of an element

Chemistry
1 answer:
lukranit [14]3 years ago
8 0
An atom is the smallest you can get to identify the element.
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How many joules are required to melt 250 grams of water
tatuchka [14]

Answer:

i not sure but i searched it up and it said Q=104525J

Explanation:

3 0
3 years ago
Given a Ksp for AgBr of 5.0 * 10–13, what happens when 50 ml of 0.002 M AgNO3 and 50 mL of 0.002 M NaBr are mixed?
IrinaK [193]

Answer:

A precipitate will be produced

Explanation:

The Ksp of AgBr is:

AgBr(s) → Ag⁺ + Br⁻

5.0x10⁻¹³ = [Ag⁺] Br⁻]

<em>Where [] are the concentrations in equilibrium of each ion.</em>

<em />

And if Q is:

Q = [Ag⁺] Br⁻]

<em>Where the concentrations are actual concentrations of each ion</em>

<em />

We can say:

IF Q >= Ksp, a precipitate will be produced

IF Q < Ksp, no precipitate will be produced.

the molar concentrations are:

[AgNO₃] = [Ag⁺] = 0.002M * (50mL / 100mL) = 0.001M

<em>Because 50mL is the volume of the AgNO₃ solution and 100mL the volume of the mixture of both solutions.</em>

[NaBr] = [Br⁻] = 0.002M * (50mL / 100mL) = 0.001M

Q = [0.001M] * [0.001M]

Q = 1x10⁻⁶

As Q > Ksp,

<h3>A precipitate will be produced</h3>
5 0
3 years ago
The ___ of an organism is its evolutionary history
harkovskaia [24]
The phylogeny of an organism is its evolutionary history.
8 0
4 years ago
Which of these methods could are used to separate an insoluble solid and soluble solid
olasank [31]

Answer:

To separate an insoluble solid from a soluble solid: Mixing the mixture with water, filtering out the insoluble solid, and then evaporating the water to isolate the soluble solid.

Explanation:

5 0
3 years ago
An acid solution contains more... ions than... ions.
spayn [35]

Answer: An acid contains more hydrogen ions than hydroxide ions.

Explanation:

An acid is defined as the chemical compound which has a high concentration of hydrogen ions. They are considered as proton donors and they act as proton (H^+) donors when they have high concentration of hydrogen ions.

A base is defined as a chemical substance which has high concentration of hydroxide ions. They are considered as proton acceptors and they act as proton (H^+) acceptors when they have low concentration of hydrogen ions.

Hence, an acid is contains more hydrogen ions than hydroxide ions.

4 0
3 years ago
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