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Vesnalui [34]
2 years ago
11

(b) A student states, "When the alcohol sample was at a temperature of 500 K, all the particles

Chemistry
1 answer:
Goryan [66]2 years ago
7 0

The kinetic energy of particles depends on temperature. As temperature increases, the kinetic energy of particles increases.

Temperature is defined as a measure of the average kinetic energy of the molecules of a substance. The higher the temperature of a substance the greater its kinetic energy.

From the foregoing, when the temperature is increased from 400K to 500K, greater kinetic energy is imparted to the molecules of the substance hence they move faster according to the kinetic theory of matter.

Learn more: brainly.com/question/10079361

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A 0.89% (w/v) sodium chloride solution is referred to as physiological saline solution because it has the sameconcentration of s
elixir [45]

Answer: Molarity of a physiological saline solution is 0.15 M

Explanation:

Molarity of a solution is defined as the number of moles of solute dissolved per liter of the solution.

Molarity=\frac{n\times 1000}{V_s}

n = moles of solute

V_s =volume of solution in ml

Given : 0.89 g of sodium chloride in 100 ml of solution.

To calculate the moles, we use the equation:

\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}=\frac{0.89g}{58.5g/mol}=0.015moles

Volume of solution = 100 ml

Molarity=\frac{0.015\times 1000}{100ml}=0.15M

Molarity of physiological saline solution is 0.15 M

4 0
3 years ago
How does oil contribute to global warming?
disa [49]

Answer:I think its C hope this helps

Explanation:

6 0
3 years ago
When a 32.3 g sample of NaI (Sodium Iodide) dissolves in 90.0 mL of water in a calorimeter, the temperature rises from 23.5 ℃ to
Leona [35]

Answer:

B

Explanation:

3 0
3 years ago
Does anyone know the answer to this chemistry question?!?
Pepsi [2]

Answer:

Mass of HCl = 73 g

Explanation:

Given data:

Mass of hydrogen = 2 g

Mass of HCl = ?

Solution:

First of all we will write the balance chemical equation:

H₂ + Cl₂   →  2HCl

Number of moles of hydrogen = 2 g/ 2g/mol

Number of moles of hydrogen = 1 mol

Form balanced chemical equation compare the moles hydrogen with HCl.

                   H₂    :   HCl

                    1      :    2

Mass of HCl:

Mass of HCl = number of moles × molar mass

Mass of HCl = 2 mol × 36.5 g/mol

Mass of HCl = 73 g

7 0
4 years ago
If three molecules of hydrogen react with one molecule of nitrogen how many molecules of ammonia would be formed?
kondor19780726 [428]
Only 2, just 2. Two.
4 0
4 years ago
Read 2 more answers
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