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nekit [7.7K]
3 years ago
10

4 moles of solid nacl are added to 4 l water, where they dissociate completely. what's the total molar concentration of solutes

in the resulting solution?
Chemistry
1 answer:
Goryan [66]3 years ago
4 0
Answer:
            Molarity  =  1 mol.L⁻¹

Solution:
             Molar concentration (Molarity) is given as,

                        Molarity  =  Moles / Volume of Solution  ------ (1)

Data Given;

                    Moles  =  4 mol

                    Volume  =  4 L

Putting Data in Eq. 1,

                    Molarity  =  4 mol ÷ 4 L

                    Molarity  =  1 mol.L⁻¹
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The reaction of hydrogen gas and iron oxide is described by the chemical equation below. 3H2+Fe2O3→2Fe+3H2O How many moles of ir
ELEN [110]

Answer:

2.2 moles of Fe will be produced

Explanation:

Step 1: Data given

Number of moles of hydrogen gas = 3.3 moles

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Step 2: The balanced equation

3H2 + Fe2O3 → 2Fe + 3H2O

Step 3: Calculate the limiting reactant

For 3 moles H2 we need 1 mol Fe2O3 to produce 2 moles Fe and 3 moles H2O

Hydrogen gas is the limiting reactant. It will completely be consumed (3.3 moles). Fe2O3 is in excess. There will react 3.3 / 3 = 1.1 moles

There will remain 1.5 - 1.1 = 0.4 moles Fe2O3

Step 4: Calculate moles Fe

For 3 moles H2 we need 1 mol Fe2O3 to produce 2 moles Fe and 3 moles H2O

For 3.3 moles H2 we'll have 2/3 * 3.3 = 2.2 moles Fe

2.2 moles of Fe will be produced

5 0
3 years ago
Why aren't flowers sold at a monastery math worksheet answers?
maria [59]

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2) 5 · (2a - 3) = 60.

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d) 10a ÷ 10 = 75 ÷ 10; commutative.

e) a = 7.5; simplifying.

3) 4 n + (7 + n) = 52.

a) 4n + (n + 7) = 52; commutative.

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d) 5n + 7 - 7 = 52 - 7; subtraction.

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g) n = 9; simplifying.

4) 8t - 3 · (4t + 2) = 16.

a) 8t - 12 t - 6 = 16; distributive.

b) -4 t - 6 = 16; combining.

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This is the question I found on internet.

8 0
3 years ago
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Answer:

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Explanation:

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from the density

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Note:

- Would be wrong in this case to assume density of water = 1 Kg/L since the solution is heavily concentrated in glucose and therefore the density of water deviates from its pure value.

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How are photons emitted by atoms?
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Explanation:

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