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Cloud [144]
3 years ago
15

What is precautionary measure?​

Chemistry
1 answer:
vichka [17]3 years ago
4 0
Precautionary measures are rules often followed when working in labs and/or with chemicals.
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This is a sign of a chemical reaction that involves the production of bubbles or fizzing
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Answer:

gas production

Explanation:

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3 years ago
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Given equilibrium partial pressures of PNO2= 0.247 atm, PNO = 0.0022atm, and PO2 = 0.0011 atm calculate the equilibrium constant
maxonik [38]
Answer 1:
Equilibrium constant (K) mathematically expressed as the ratio of the concentration of products to concentration of reactant. In case of gaseous system, partial pressure is used, instead to concentration.

In present case, following reaction is involved:

                        2NO2    ↔      2NO + O2

Here, K = \frac{[PNO]^2[O2]}{[PNO2]^2}

Given: At equilibrium, <span>PNO2= 0.247 atm, PNO = 0.0022atm, and PO2 = 0.0011 atm
</span>
Hence,  K = \frac{[0.0022]^2[0.0011]}{[0.247]^2}
                 = 8.727 X 10^-8

Thus, equilibrium constant of reaction = 8.727 X 10^-8
.......................................................................................................................

Answer 2:
Given: <span>PNO2= 0.192 atm, PNO = 0.021 atm, and PO2 = 0.037 atm.

Therefore, Reaction quotient = </span>\frac{[PNO]^2[O2]}{[PNO2]^2}
                                              = \frac{[0.021]^2[0.037]}{[0.192]^2}
                                              = 4.426 X 10^-4.

Here, Reaction quotient > Equilibrium constant.

Hence, <span>the reaction need to go to reverse direction to reattain equilibrium </span>
5 0
3 years ago
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Why the atomic mass listed on the periodic table if 63.55?
Artist 52 [7]

Answer:

If you are asking why the atomic mass on the periodic table only goes to the hundredth's place, it is because of significant figures. No number is exact, like it can be 63.5500001, and it will go to a certain point before it cease to matter in experiments.

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3 years ago
How do you make a Bohr’s model
alexandr1967 [171]

U put all the atoms on the Bohr model


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Please finish this <br> C3H8+5O2
stiks02 [169]

Answer:

Below.

Explanation:

This is the combustion of the hydrocarbon propane.

C3H8 + 5O2 --> 3CO2 + 4H2O

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2 years ago
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