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VikaD [51]
4 years ago
15

When making a molar liquid solution from a dry chemical stock you must know the molecular weight of the compound. True or false?

Chemistry
1 answer:
rosijanka [135]4 years ago
3 0

Answer: True

Explanation:

Molarity of a solution is defined as the number of moles of solute dissolved per Liter of the solution.

Molarity=\frac{n}{V_s}

where,

n= moles of solute

Moles=\frac{\text{Given mass} of solute}{\text{Molar mass of the solute}}  

V_s = volume of solution in L

Molarity=\frac{\text {given mass of solute}}[\text {molecular mass of solute} times V_s}

Thus when making a molar liquid solution from a dry chemical stock you must know the molecular weight of the compound.

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Which compound is correctly balanced by charge in the following reaction?
Mumz [18]

Answer:A,D

Explanation:

Option a:

Sodium has charge +1

Hydroxide has charge -1.

So,sodium hydroxide is balanced.

Option b:

Magnesium has charge +2

Two sulphates has a charge of -2\times 2=-4.

So,magnesium sulphate is not balanced.

Option c:

Magnesium has charge +2

Two hydroxides have a charge of 2\times -1=-2.

So,magnesium hydroxide is balanced.

Option d:

Sodium has charge +1

Sulphate has charge -2.

So,sodium sulphate is not balanced.

6 0
4 years ago
How is the value of an atomic number detirme?
serious [3.7K]

The number of protons in the nucleus determines the atomic number of an element.

Every element has its own characteristic atomic number.

4 0
4 years ago
Identify each of these substances as acidic, basic, or neutral.
DochEvi [55]

Answer:

<u>Rain Water:</u> Acidic

<u>Cola:</u> Acidic

<u>Tomato Juice:</u> Acidic

<u>Liquid Drain Cleaner:</u> Basic

6 0
4 years ago
Read 2 more answers
Fe+Pb (NO3)2 single replacement reactions
stiv31 [10]
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4 0
3 years ago
3 What is the number located in the top right hand corner of the atomic symbol of an ion with 16 protons, 17 neutrons and 14 ele
siniylev [52]

The number located in the top right corner of the ion is +2

An ion is an atom or group of atoms which possess an electric charge.

The charge on an ion can be obtained by using the following formula:

<h3>Charge = Proton – Electron </h3>

With the above formula, we can obtain the charge of the ion given in the question above as illustrated below:

Proton = 16

Neutron = 17

Electron = 14

<h3>Charge =? </h3>

Charge = Proton – Electron

Charge = 16 – 14

<h3>Charge = +2</h3>

Therefore, the charge on the ion is +2

Learn more: brainly.com/question/3428265

3 0
3 years ago
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