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slega [8]
3 years ago
10

How many millimeters are there in 1 kilometer

Chemistry
1 answer:
Marysya12 [62]3 years ago
4 0
1.000.000 is the correct answer
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What happens when water is added to sodium bicarbonate
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Sodium bicarbonate (or baking soda) will cause both exothermic and endothermic reactions when added to water. It becomes either unstable or stable carbonic acid, which will eventually become CO2. The reaction would be exothermic is when H2CO3 (Carbonic Acid unstable) is formed and endothermic is when CO2 is.
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Can elements be broken down further into other pure substances?
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8 0
4 years ago
Calculate the value of ΔG∘rxnΔGrxn∘ for the following reaction at 296 K. Ka = 2.9 × 10–8 and assume Ka does not change significa
oee [108]

Answer:

\Delta G_{rxn}=42.7\frac{kJ}{mol}

Explanation:

In this case, for the dissociation of hypochlorous acid, we know that the acid dissociation constant (Ka) is 2.9x10⁻⁸, which is related with the Gibbs free energy as shown below:

\Delta G_{rxn}=-RTln(K)

But in this case K is just Ka, therefore, at 296 K, it turns out:

\Delta G_{rxn}=-8.314\frac{J}{mol*K}*296K*ln(2.9x10^{-8})\\\\\Delta G_{rxn}=42.7\frac{kJ}{mol}

Such result, means that the reaction is nonspontaneous at the given temperature, it means it is not favorable (not easily occurring).

Best regards.

7 0
3 years ago
martain surface features include gullies and runoff channels which suggest that on the surfave of mars
statuscvo [17]
There used to be substantial water on Mars.
6 0
4 years ago
Read 2 more answers
As the temperature of a gas sample increases, the number of molecules and volume remaining constant, the pressure exerted by the
Luba_88 [7]

Answer:

A. increases

Explanation:

According to the Gay-Lussac's law:-

Thus, at constant volume and number of moles, Pressure of the gas is directly proportional to the temperature of  the gas.

P ∝ T

Also,  it can be written as:-

\frac {P_1}{T_1}=\frac {P_2}{T_2}

Thus, if the temperature is increased, the pressure exerted by the gas also increases.

8 0
4 years ago
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