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3 years ago

What am I? Weathering, Erosion or Deposition. >

Chemistry

1 answer:

Alona [7]3 years ago

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What is the molarity of 2.3 mol of Kl dissolved in 0.5 L of water

Nastasia [14]

Answer:

$4.6\,\,moL\,\,L^{-1}$

Explanation:

Molarity refers to a measure of concentration.

Molarity = moles of solute/Litres of solution

Molarity refers to number of moles of solute present in this solution.

In order to find a solution's molarity, use value for the number of moles of solute and the total volume of the solution expressed in liters

As molarity of 2.3 mol of Kl is dissolved in 0.5 L of water,

Molarity = $\frac{2.3}{0.5} =4.6\,\,moL\,\,L^{-1}$

4 0

4 years ago

Please help will reward brainliest

Nastasia [14]

I'm not positive what evaporations you need but I have these.....

1. Wind assists evaporation; for example in clothes dry faster under a fan.

2. Heat assists evaporation; for example, in summer clothes dry faster than in winter.

3. Increase in surface area exposed assists evaporation; for instance, a wet cloth spread out dries faster than when folded.

4. Dryness assists evaporation; for instance, clothes dry faster in summer than during the monsoon when the air is humid.

5. The rate of evaporation depends upon the nature of the liquid; for example, petrol evaporates faster than water.

6. Vapor pressure: if pressure is applied on the surface of a liquid, evaporation is hindered; consider, for example, the case of a pressure cooker.

8 0

3 years ago

The anwser to this problem

Ilya [14]

Answer: 500

Explanation: Since there are fifty tens, you must multiply 50 by 10, in which will get you 500 as your final answer.

8 0

4 years ago

A reaction will be spontaneous only at low temperatures if both ΔH and ΔS are negative. For a reaction in which ΔH = −310.1 kJ/m

ruslelena [56]

Answer:

3211.12 K

Explanation:

The expression for the standard change in free energy is:

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

Where,

$\Delta G$ is the change in the Gibbs free energy.

T is the absolute temperature. (T in kelvins)

$\Delta H$ is the enthalpy change of the reaction.

$\Delta S$ is the change in entropy.

For reaction to be spontaneous, $\Delta G$

Given, $\Delta H=-310.1\ kJ/mol=-310100\ J/mol$

$\Delta S=-89.00\ J/K.mol$

So,

$\Delta H-T\times \Delta S$

Thus, applying values as:-

$-310100-T\times (-89.00)$

So, T = 3484.27 K

The conversion of T( °C) to T(K) is shown below:

T( °C) = T(K) - 273.15

So,

T = (3484.27 - 273.15) K = 3211.12 K

<u>The temperature below which the reaction is spontaneous is:- 3211.12 K </u>

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4 years ago

How many grams of hydrogen gas is produced in Zn + HCl

Inga [223]

Answer:

3.08 grams

Explanation:

4 0

3 years ago

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