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3 years ago

How are the concentration of the reactants and reaction rate related?

Chemistry

1 answer:

FromTheMoon [43]3 years ago

3 0

<h3>Answer:</h3>

C. A change in concentration results in a change in the rate of a

reaction

<h3>Explanation:</h3>

We first need to know what is the rate of a reaction;

The rate of a reaction refers to the speed at which reactants are converted to products.

Secondly we need to identify several factors that affect the rate of reactions.

The rate of reactions depends on a number of factors which include, surface area of reactants, concentration of both reactants and products, temperature, presence of a catalyst, etc.

Thirdly, understand the effect of concentration of reactants and products on the rate of reaction.

If we consider the concentration of reactants and products;

An increase in the concentration of reactants increases the number of collisions which results to an increase in the rate of reaction.

On the other hand, when the concentration of products is increased, the rate of reverse reactions increases for reversible reactions while a decrease in the concentration of reactants favors forward reaction.

Therefore, in our case, we can say that, a change in the concentration of either reactants or products results in a change in the rate of a reaction.

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Water changes from a liquid to a gas in the process of evaporation. <br> true or false

Umnica [9.8K]

This it true because in the triangle of the transformation from solid, liquid, and gas
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2 years ago

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How are the properties of water affected by hydrgen bonding?

olasank [31]

The hydrogen bonds that form between water molecules account for some of the essential and unique properties of water. The attraction created by hydrogen bonds keepswater liquid over a wider range of temperature than is found for any other molecule its size.

Hope this helped!

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3 years ago

Question 116 g of sunflower oil is

Luba_88 [7]

<h2>Answer: 125.41 mL</h2>

Explanation:

Volume = mass ÷ density

= 116 g ÷ 0.925 g/mL

= 125.41 mL

<h3>A 116 g of sunflower oil of 0.925 g/mL has a volume of 125.41 mL.</h3>

7 0

2 years ago

A solution is prepared by dissolving 27.7 g of cacl2 in 375 g of water. the density of the resulting solution is 1.05 g/ml. the

bagirrra123 [75]

The answer is 6.88.
Solution:
We can calculate for the percent composition of CaCl2 by mass by dividing the mass of the CaCl2 solute by the mass of the solution and then multiply by 100. The total mass of the resulting solution is the sum of the mass of CaCl2 solute and the mass of water solvent. Therefore, the percent composition of CaCl2 by mass is
% by mass = (mass of the solute / mass of the solution)*100
= mass of solute / (mass of the solute + mass of the solvent)*100
= (27.7 g CaCl2 / 27.7g + 375g) * 100
= 6.88

5 0

3 years ago

Read 2 more answers

What is the longest wavelength in the Balmer series? (Hint: the Rydberg constant for Hydrogen is 1.096776×107 1/m, and the Balme

boyakko [2]

<u>Answer:</u> The longest wavelength of light is 656.5 nm

<u>Explanation:</u>

For the longest wavelength, the transition should be from n to n+1, where: n = lower energy level

To calculate the wavelength of light, we use Rydberg's Equation:

$\frac{1}{\lambda}=R_H\left(\frac{1}{n_i^2}-\frac{1}{n_f^2} \right )$

Where,

$\lambda$ = Wavelength of radiation

$R_H$ = Rydberg's Constant = $1.096776\times 10^7m^{-1}$

$n_f$ = Higher energy level = $n_i+1=(2+1)=3$

$n_i$ = Lower energy level = 2 (Balmer series)

Putting the values in above equation, we get:

$\frac{1}{\lambda }=1.096776\times 10^7m^{-1}\left(\frac{1}{2^2}-\frac{1}{3^2} \right )\\\\\lambda =\frac{1}{1.5233\times 10^6m^{-1}}=6.565\times 10^{-7}m$

Converting this into nanometers, we use the conversion factor:

$1m=10^9nm$

So, $6.565\times 10^{-7}m\times (\frac{10^9nm}{1m})=656.5nm$

Hence, the longest wavelength of light is 656.5 nm

4 0

2 years ago