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Nuetrik [128]
3 years ago
10

Explain why the following are made of thermosetting plastics.

Chemistry
1 answer:
rusak2 [61]3 years ago
6 0

Answer:

a: they're used in saucepan handles 'cause they don't soften when heated and also 'cause they cant be bent easily.

b: thermosetting plastics are bad electricity conductors. they don't get moulded and are also hard and strong.

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1. If temperature is increased, the number of<br> collisions per second
andrey2020 [161]

Answer:

Increases

Explanation:

Increasing the temperature increases reaction rates because of the disproportionately large increase in the number of high energy collisions.

4 0
3 years ago
Help with chemistry please<br><br>Which chemical reaction involves the most oxygen atoms?
Ratling [72]
H2O is A chemical reaction of the most oxygen atoms
3 0
3 years ago
List the following elements in order of increasing number of valence electrons: C, CI, As, Na, He.
lorasvet [3.4K]
B is the correct answer
4 0
4 years ago
What is the molarity of the solution formed by mixing 0.20mol of sodium hydroxide with enough water to make 150 ml of solution?
bixtya [17]
Molarity is defined as the number of moles of solute in 1 L of solution 
number of NaOH moles present - 0.20 mol 
volume of solution - 150 mL 
since molarity is taken as number moles of solute in 1000 mL
if 150 mL contains - 0.20 mol 
then 1000 mL should contain - 0.20 / 150 x 1000 = 1.33 mol 
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3 0
3 years ago
At 400 K, This Reaction Has Kp 8.2 X 104 What Is Kp At 400 K For The Following Reaction
kondor19780726 [428]

The given question is incomplete, here is a complete question.

At 400 K, this Reaction has K_p=8.2\times 10^{-4}

SO_3(g)\rightleftharpoons SO_2(g)+\frac{1}{2}O_2(g)

What Is K_p at 400 K for the following reaction?

2SO_3(g)\rightleftharpoons 2SO_2(g)+O_2(g)

(A) 8.2 x 10⁻⁴

(B) 2.9 x 10⁻²

(C) 6.7 x 10⁻⁷

(D) 1.6 x 10⁻⁷

Answer : The correct option is, (C) 6.7\times 10^{-7}

Explanation :

The given chemical equation follows:

SO_3(g)\rightleftharpoons SO_2(g)+\frac{1}{2}O_2(g)

The equilibrium constant for the above equation, K_p=8.2\times 10^{-4}.

We need to calculate the equilibrium constant for the following equation of above chemical equation, which is:

2SO_3(g)\rightleftharpoons 2SO_2(g)+O_2(g),   K_p'

The equilibrium constant for the doubled reaction will be the square of the initial reaction.

Or, we can say that

If the equation is multiplied by a factor of '2', the equilibrium constant will be the square of the equilibrium constant of initial reaction.

The value of equilibrium constant for the following reaction is:

K_{p}'=(K_p)^2

K_{p}'=(8.2\times 10^{-4})^2

K_{p}'=6.7\times 10^{-7}

Hence, the value of equilibrium constant for the following reaction is, 6.7\times 10^{-7}

7 0
3 years ago
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