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Alexandra [31]
2 years ago
13

Please everyone,i need a little help with this..

Chemistry
1 answer:
S_A_V [24]2 years ago
5 0
<h2>1. C</h2><h2>2. D</h2><h2>3. D</h2><h2>4. D</h2><h2>5. B</h2><h2>6. B</h2><h2>7. D</h2><h2>8. A</h2><h2>9. A</h2><h2>10. A ( According to me)</h2>
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Which of the following is not an indication of chemical change ?
kogti [31]

Answer:

I think it is A.

Explanation:

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6 0
3 years ago
When cooking frozen cheese ravioli, the directions say to put the 255 grams of filled pasta into 3 quarts of boiling water. why
kondaur [170]
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8 0
3 years ago
The free energy of formation of nitric oxide, NO, at 1000 K (roughly the temperature in an automobile engine during ignition) is
Assoli18 [71]

<u>Answer:</u> The value of K_p for the chemical equation is 8.341\times 10^{-5}

<u>Explanation:</u>

For the given chemical equation:

N_2(g)+O_2(g)\rightarrow 2NO(g)

To calculate the K_p for given value of Gibbs free energy, we use the relation:

\Delta G=-RT\ln K_p

where,

\Delta G = Gibbs free energy = 78 kJ/mol = 78000 J/mol  (Conversion factor: 1kJ = 1000J)

R = Gas constant = 8.314J/K mol

T = temperature = 1000 K

K_p = equilibrium constant in terms of partial pressure = ?

Putting values in above equation, we get:

78000J/mol=-(8.314J/Kmol)\times 1000K\times \ln K_p\\\\Kp=8.341\times 10^{-5}

Hence, the value of K_p for the chemical equation is 8.341\times 10^{-5}

4 0
4 years ago
How many molecules of hydrogen chloride gas could theoretically be produced at STP by reacting 34.7 liters of hydrogen gas at ST
Kamila [148]

Answer:

69.4

Explanation:

There isn't one, I just took the test.

7 0
3 years ago
Do substances react by mass? Yes or no explain
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yes substances Do  react by mass

5 0
3 years ago
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