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inessss [21]
3 years ago
12

Explain the meaning of each term in the symbol aXz

Chemistry
1 answer:
Ede4ka [16]3 years ago
8 0

AXz

Explanation:

It is a chemical notation of nuclide

Here X is the symbol of the element

A is the mass number of element

A=n+p(sum of protons and neutrons)

Z is the atomic number.

For example, 12C6

Hers X is C, symbol of carbon

12 is the mass number and 6 is the atomic number of the carbon.

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What is the molar mass of sodium phosphate, Na3PO4?
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Answer:

164g

Explanation:

3×23+31+16×4

≈69+31+64

≈164.0 g

8 0
3 years ago
The term _____ describes a substance that can act as both an acid and a base.
telo118 [61]

The term amphoteric describes a substance that can act as both an acid and a base.

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3 years ago
The correct mathematical expression for finding the molar solubility (s) of calcium phosphate is
GalinKa [24]

Answer is: The molar solubility of calcium phosphate is 108s⁵ = Ksp.

<span> Balanced chemical reaction: Ca</span>₃(PO₄)₂(s) → 3Ca²⁺(aq) + 2PO₄³⁻(aq).<span>
[Ca²</span>⁺] = 3s(Ca₃(PO₄)₂) = 3s.<span>
[PO</span>₄³⁻] = 2s.<span>
Ksp = [Ca²</span>⁺]³ · [PO₄³⁻]².<span>
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6 0
3 years ago
If I have 7.5 L of a gas in a piston at a pressure of 1.75 atm and compress the gas until its volume is 3.7 L, what will the new
Sergio [31]

Answer:

3.55atm

Explanation:

We will apply Boyle's law formula in solving this problem.

P1V1 = P2V2

And with values given in the question

P1=initial pressure of gas = 1.75atm

V1=initial volume of gas =7.5L

P2=final pressure of gas inside new piston in atm

V2=final volume of gas = 3.7L

We need to find the final pressure

From the equation, P1V1 = P2V2,

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P2 = (1.75×7.5)/3.7

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7 0
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ankoles [38]

Explanation:

attribute of a person that often cannot be measured directly but can be assessed using numbers of indicators or manifest variables

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