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3 years ago

describe the differences of the kinetic energy of a cold water solution to that of a hot water solution

Chemistry

2 answers:

hjlf3 years ago

8 0

Answer:

Here are the differences between the hot and cold water. The particles in the hot water move faster than the particles in the cold water.

Explanation: I hope this helped you!!!!!!!:)

Natasha_Volkova [10]3 years ago

4 0

The kinetic energy is in relation to the temperature. In cold water, the molecules in the water moves slower and gives off less heat. Which also means it has a lower temperature and lower kinetic energy. Hot water is the opposite. The molecules move faster and have a higher kinetic energy. It has a higher temperature too.

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A strong acid, such as hydrochloric acid cannot be poured down a sink because it will react and dissolve the metal in the pipes.

Nataliya [291]

Answer:

15.2 grams of calcium chloride are produced and HCl is the limiting reactant.

Explanation:

Hello there!

In this case, according to the described scenario, it is possible to realize that the reaction between hydrochloric acid and calcium hydroxide is:

$2HCl+Ca(OH)_2\rightarrow CaCl_2+2H_2O$

Whereas there is a 2:1 mole ratio of the acid to the base. In such a way, with the given masses, we can compute how much calcium chloride product is produced due to the chemical reaction via stoichiometry:

$m_{CaCl_2}^{by HCl}=10.0gHCl*\frac{1molHCl}{36.46gHCl}*\frac{1molCaCl_2}{2molHCl} *\frac{110.98gCaCl_2}{1molCaCl_2} =15.2gCaCl_2\\\\m_{CaCl_2}^{by Ca(OH)_2}=10.5gHCl*\frac{1molCa(OH)_2}{74.09gCa(OH)_2}*\frac{1molCaCl_2}{1molCa(OH)_2} *\frac{110.98gCaCl_2}{1molCaCl_2} =15.7gCaCl_2$

Whereas we infer that the correct amount is 15.2 g since HCl is the limiting reactant as it produces the fewest grams of the desired product. Consequently, the calcium hydroxide is the excess reactant here.

Regards!

4 0

3 years ago

Which of these models show atoms that have joined together? Select all that apply.

7nadin3 [17]

Answer:

I think the 1st pic, the 2nd one, and the 3rd one.

Explanation:

Hope this helps.

7 0

3 years ago

Read 2 more answers

The reaction C4H8(g)⟶2C2H4(g) C4H8(g)⟶2C2H4(g) has an activation energy of 262 kJ/mol.262 kJ/mol. At 600.0 K,600.0 K, the rate c

crimeas [40]

Answer : The rate constant at 785.0 K is, $1.45\times 10^{-2}s^{-1}$

Explanation :

According to the Arrhenius equation,

$K=A\times e^{\frac{-Ea}{RT}}$

or,

$\log (\frac{K_2}{K_1})=\frac{Ea}{2.303\times R}[\frac{1}{T_1}-\frac{1}{T_2}]$

where,

$K_1$ = rate constant at $600.0K$ = $6.1\times 10^{-8}s^{-1}$

$K_2$ = rate constant at $785.0K$ = ?

$Ea$ = activation energy for the reaction = 262 kJ/mole = 262000 J/mole

R = gas constant = 8.314 J/mole.K

$T_1$ = initial temperature = $600.0K$

$T_2$ = final temperature = $785.0K$

Now put all the given values in this formula, we get:

$\log (\frac{K_2}{6.1\times 10^{-8}s^{-1}})=\frac{262000J/mole}{2.303\times 8.314J/mole.K}[\frac{1}{600.0K}-\frac{1}{785.0K}]$

$K_2=1.45\times 10^{-2}s^{-1}$

Therefore, the rate constant at 785.0 K is, $1.45\times 10^{-2}s^{-1}$

7 0

4 years ago

Initial temperature of metal =

klasskru [66]

Answer:

Initial temperature of metal =52°C

Until temperature of water=24°C

Final temperature of both=100°C 30°C

6 0

4 years ago

Why dihydrogen is not very reactive under normal conditions?

drek231 [11]

It is inert.ie. not reactive as H-H bond has high dissociation enthalpy . Two atoms of hydrogen combine to form molecular hydrogen by a covalent bond. Hence , molecular hydrogen is more stable than atomic hydrogen and does not react under normal conditions.

3 0

3 years ago