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PtichkaEL [24]
3 years ago
15

If a 28.0 L balloon with a temperature of

Chemistry
1 answer:
Alexeev081 [22]3 years ago
6 0

Answer:

5.6 L

Explanation:

We can apply Charles' Law here since our pressure is constant (will not change inside the refrigerator) and we are relating change in volume with change in temperature:

V₁ / T₁ = V₂ / T₂ where V₁ and T₁ are initial volume and temperature, and V₂ and T₂ are final volume and temperature. Let's plug in what we know and solve for the unknown:

28.0 L / 25 °C = V₂ / 5 °C => V₂ = 5.6 L

5.6 L is our new volume (at 5 °C).

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HCl +KOH ---> KCl + H20
MA_775_DIABLO [31]

Answer:

5.59x10^-3 moles

Explanation:

The balanced equation for the reaction is given below:

HCl + KOH —> KCl + H2O

Now we can obtain the number of mole of HCl required to produce 5.59x10^-3 moles of KCl as follow:

From the balanced equation above, 1 mole of HCl produced 1 mole of KCl.

Therefore, 5.59x10^-3 moles of HCl will also produce 5.59x10^-3 moles of KCl.

From the illustration made above, we can see evidently that 5.59x10^-3 moles of HCl is required to produce 5.59x10^-3 moles of KCl

4 0
3 years ago
If he(g) has an average kinetic energy of 8750 j/mol under certain conditions, what is the root mean square speed of cl2(g) mole
saw5 [17]
<span>The root mean square speed is given by V_rms = âšRT/M where r, t, and m are the rate constant, temperature and molar mass the gas Average molar kinetic energy of the gas E = 1/2 M * (V_rms)^2 = 8750 ms/1 So (V_rms)^2 = (2 * 8750) / M Molar mass of 2 chlorine atoms in kg is 2 * 35 * 10^(-3) Hence we have (V_rms)^2 = (2 * 8750)/ (2 * 35 * 10^(-3)) (V_rms)^2 = 8750/0.035 = 250000 So V_rms = âš 250000 = 500</span>
5 0
3 years ago
Read 2 more answers
Why is fractional distillation not used to produce drinking water from sea water?
Natasha_Volkova [10]

Answer:

Please mark me brainliest. the answer is

Explanation:

The problem is that the desalination of water requires a lot of energy. Salt dissolves very easily in water, forming strong chemical bonds, and those bonds are difficult to break. Energy and the technology to desalinate water are both expensive, and this means that desalinating water can be pretty costly.

4 0
3 years ago
Identifying a trend in temperature change over time
stiv31 [10]

Answer:

More than three decade the temperature of earth is increasing equally by the rate of 0.8 Celsius (1.4 Fahrenheit). It is going to be very harmful for the human being as well animals.  The global warming is the main reason and hole in the ozone layer had been the cause of increasing the temperature of the earth. Humans are also involved in cause in temperature of earth by cutting forests and making land suitable for residence and not planting more trees instead of the cut trees.

7 0
3 years ago
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4) express 55mg in kilograms
artcher [175]
55 mg =

.00005500000 kg
6 0
3 years ago
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