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irina1246 [14]
3 years ago
5

The following properties are either physical or chemical. Which one is different from the rest based on those two categories?

Chemistry
1 answer:
Eddi Din [679]3 years ago
4 0

Answer:

Mass

Explanation:

Boiling point, flamablity and thermal conductivity are properties of a compound. To be more specific, they are all physical properties of matter.

Mass is the odd one out. Mass is not property of compounds. It is simply more of the amount of matter which substance contains and it determines the weight of compounds.

Physical property tells us what a substance is when no change is occuring to its constituents. Chemical properties shows how compounds behaves when they undergo changes.

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Do you no the 5 major dairy groups​
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For a certain reaction, the frequency factor A is 5.0 × 109 s−1 and the activation energy is 16.3 kJ/mol. What is the rate const
WITCHER [35]

Answer:

K(79°C) = 1.906 E7 s-1

Explanation:

Arrhenius eq:

  • K(T) = A e∧(- Ea/RT)

∴ A = 5.0 E9 s-1

∴ Ea = 16.3 KJ/mol

∴ R = 8.314 E-3 KJ/K.mol

∴ T = 79°C ≅ 352 K ⇒ K = ?

⇒ K(79°C) = (5.0 E9 s-1)e∧[ - (16.3KJ/mol)/(8.314 E-3 KJ/K.mol)(352 K)]

⇒ K(79°C) = (5.0 E9 s-1)e∧(- 5.5697)

⇒ K(79°C) = (5.0 E9 s-1)*(3.811 E-3)

⇒ K(79°C) = 1.906 E7 s-1

3 0
4 years ago
Which of the following is controlled by the nervous system
uranmaximum [27]

Your whole body. All of your actions are carried out due to the nervous system.

Hope it helps! :)

5 0
3 years ago
Two reactions and their equilibrium constants are given. A + 2 B − ⇀ ↽ − 2 C K 1 = 2.79 2 C − ⇀ ↽ − D K 2 = 0.186 Calculate the
vfiekz [6]

Answer:

K=1.93

Explanation:

Given reactions are:

A +2B ⇄ 2C  K1=2.79

2C ⇄ D K2=0.186

D⇄ A+ 2B K=?

If we reverse the reaction then the euillibrium constant also become reciprocal of original value:

3rd reaction is a combination of reciprocal of 1st and 2nd reaction

2C⇄A +2B   1/K1;........................1

D ⇄ 2C  1/K2; ..............................2

On adding 1 and 2

D ⇄A +2B    K=\frac{1}{K1} \times\frac{1}{K2};

K=\frac{1}{2.79} \times\frac{1}{0.186};

K=1.93

4 0
4 years ago
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