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2 years ago

How many moles of MgS2O3 are in 205 g of the compound?

2 answers:

6 0

$Mol = \frac{mass}{molar mass}$

Mass of the compound = 205 g
Molar Mass of compound = ((24) + (2 * 32) + (3 * 16))
= 136 g / mol

∴ # mols in 205g = $\frac{205 g}{136 g / mol}$
= 1.507 mol

serg [7]2 years ago

6 0

<span>Since a mol of MgS2O3 weights 136gr (the same weight as the atomic weight for that compound, but measured in gr), you just have to divide the mass you have (205) by that one (136), resulting in 1'514 moles.</span>

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if one knows the mass and the molar mass of product D in a chemical reaction, one can determine the mass of product D procued by

ale4655 [162]

Answer:

Number of moles

Explanation:

Using the number of moles in chemical reactions, we can determine the quantity of products and even the reactants that are combining to form them.

The number of moles is derived using the expression below is;

Number of moles = $\frac{mass}{molar mass}$

Once we establish the number of moles of any of the specie given from the mass and molar mass, we can relate it to any other species.

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3 years ago

What is the mass, in grams, of 1.26 mol of water, H2O?

Masteriza [31]

Answer:

The mass of 1.26 mole of water, H₂O, is 22.68 grams

Explanation:

Molar mass is the amount of mass that a substance contains in one mole. In other words, the molar mass of an atom or a molecule is the mass of one mole of that particle and its unit is g/mole.

In this case, being:

H: 1 g/mole
O: 16 g/mole

the molar mass of water H₂O is:

H₂O= 2*1 g/mole + 16 g/mole= 18 g/mole

Then you can apply the following rule of three: if 18 grams are present in 1 mole of H2O, how much mass is present in 1.26 moles of water?

$mass=\frac{1.26 moles*18 grams}{1 mole}$

mass= 22.68 grams

<u><em>The mass of 1.26 mole of water, H₂O, is 22.68 grams</em></u>

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3 years ago

Question is in picture below

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The dissociation of cadmium chloride is as follows: CdCl₂(s) → Cd⁺²(aq) + 2Cl⁻(aq)

<h3>What is dissociation?</h3>

Dissociation is the process by which a compound body breaks up into simpler constituents; said particularly of the action of heat on gaseous or volatile substances.

It is a chemical reaction in which a compound breaks apart into two or more components. The general formula for a dissociation reaction follows the form:

AB → A + B

According to this question, cadmium chloride undergoes dissociation into cadmium and chlorine ions as follows:

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Learn more about dissociation at: brainly.com/question/28952043

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10 months ago

Use Table 1: Analysis of Decay in the laboratory guide to answer this question: Scientists find a piece of wood that is thought

Sladkaya [172]

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2 years ago

When a student mixes 50 mL of 1.0 M HCl and 50 mL of 1.0 M NaOH in a coffee-cup calorimeter, the temperature of the resultant so

zmey [24]

Answer: 54.4 kJ/mol

Explanation:

First we have to calculate the moles of HCl and NaOH.

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