If i add water to 100 mL of a 0.15M NaOH solution until the final volume 150mL , what will the molarity of the diluted solution be ?

Answers

Answer 1

Answer:

If water is added to 100 ml of a 0.15 M NaOH solution until the final volume of 150 ml. The molarity of the diluted solution is 0.1 mol. L.

What is molarity?

Molarity is the measure of the concentration of any solute per unit volume of the solution.

$Molarity = (mole\; of \;solute)/(volume \;of \; solution) \n$

Moles of solute is $0.15 mol. L^-^1 * 100 * 10^-^3 \;L$

Volume is 150 ml

Putting the value

$Molarity = (0.15 mol. L^-^1 * 100 * 10^-^3 \;L)/(150\; ml) =0.1 mol * L$

Thus, the molarity of the diluted solution is 0.1 mol. L.

Learn more about molarity

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Answer 2

Answer: 0,15 moles of NaOH-------in------------1000ml
x moles of NaOH------------in--------100ml
x = 0,015 moles of NaOH

final volume = 150ml

0,015 moles of NaOH---in-------150ml
x moles of NaOH--------------in-----1000ml
x = 0,1 moles of NaOH

answer: 0,1mol/dm³ (molarity)

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Jello has a density of 1.14 g/mL. A box of Jello makes 475 mL of Jello and has 13 g of sugar. Determine the % m/m of sugar in the Jello. (Hint: d=m/v)

Answers

Answer:

2.34 %

Explanation:

Since the density of the Jello, ρ = 1.14 g/mL and ρ = m/v where m = mass of jello and v = volume of jello = 475 mL.

So, m = ρv

substituting the values of the variables into the equation, we have

m = ρv

m = 1.14 g/mL × 475 mL = 541.5 g

Since we have 13 g of sugar in the jello, the total mass present is 13 g + 541.5 g = 554.5 g

So, the percentage by mass of sugar present % m/m = mass of sugar present/total mass × 100 %

= 13 g/554.5 g × 100 %

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During which step in the Can Crush Lab did the air pressure outside the can become greater than the pressure inside the can?. . A.The can was filled nearly to the top with water.. B.The can was placed on the hot stove burner for several minutes.. C.The can was removed from the hot oven burner.. D.The can was placed upside-down in the water-filled pan.

Answers

the step in which the air pressure outside the can become greater than the pressure inside the can is : A. The can was filled nearly to the top with water

The next step is to cool the can suddenly by inverting the water and cause water to vapor in the can to condense

hope this helps

The answer is D. Heating the air in the can reduces the air pressure in the can. When the can is inverted in a pan with cold water, the can collapses inwards. This is because the cold water cooled the air around the outside of the can. Cold air has a higher pressure that hot air because it’s denser. Became. The higher air pressure outside presses on the can walls and force them inwards.

What is the average surface temperature of Uranus

Answers

The average surface temperature of Uranus (nearly being the coldest planet in the solar system) is -224°C

The surface of Uranus.The second coldest planet in our solar system is -224°C

At what temperature will the following reaction happen spontaneously, given that ΔH=8.91×103J and ΔS= –219.20 J/K? CaSO4(s) + 2HCl(g) → CaCl2(s) + H2SO4(l)A) at 298 K
B) at 100 K
C) It is spontaneous at any temperature.
D) It is not spontaneous at any temperature.

Answers

Answer:

D) It is not spontaneous at any temperature.

Explanation:

Given reaction:

CaSO4(s) + 2HCl(g) → CaCl2(s) + H2SO4(l)

ΔH = +8.91*10³ J

ΔS = -219.20 J/K

The sign of the Gibbs free energy (ΔG) determines the spontaneity of a given reaction. ΔG is related to ΔH and ΔS as follows:

$\Delta G = \Delta H-T\Delta S$

A reaction is spontaneous only when ΔG is negative i.e. ΔG < 0

Under the given conditions:

ΔH > 0 ; ΔS <0 and ΔH > ΔS

i.e. ΔG = ('+' value) - T( '- 'value) = + value

Therefore, irrespective of the temperature, ΔG will always be positive

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Answers

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In terms of energy, how would you classify the following chemical reaction?2Cu + O2 -> 2CuO + 315 kJ
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Answers

1. Answer;

- Exothermic reaction

Explanation;

-Exothermic reactions are types of chemical reactions in which heat energy is released to the surroundings. Since enthalpy change is the difference between the energy of products an that of reactants. It means that in an exothermic reaction the energy of products is less than that of products. In this case an energy of 315kJ is released to the surroundings.

2. Answer;

Conserved

-The total amount of energy before and after a chemical reaction is the same. Thus, energy is conserved.

Explanation;

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Answer:

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Explanation:

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