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3 years ago

5

Give 3 examples of things that are not matter

2 answers:

RSB [31]3 years ago

8 0

Time, Love, Thoughts are three things that do not meet the definition of matter

EleoNora [17]3 years ago

8 0

Non-matter includes light from torch ,heat from fire and sound for a police siren.

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Compare the properties of elements in groups 17 and group 18. Make sure to cover the following points:

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The answer for this question is b

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2 years ago

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What are the two main ways that minerals are classified

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country of origin and chemical makeup

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3 years ago

Which of the following is a compound?<br> a. iron<br> b. lead<br> c. helium<br> d. methane

Lana71 [14]

The correct answer is d) methane ( $CH_4$ )

The other options are elements.

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3 years ago

The equilibrium constant for the formation of ammonia from nitrogen and hydrogen is 1.6 × 102. what is the form of the equilibri

Nimfa-mama [501]

Answer: The expression for equilibrium constant is $\frac{[NH_3]^2}{[H_2]^3[N_2]}$

Explanation: Equilibrium constant is the expression which relates the concentration of products and reactants preset at equilibrium at constant temperature. It is represented as $k_c$

For a general reaction:

$aA+bB\rightleftharpoons cC+dD$

The equilibrium constant is written as:

$k_c=\frac{[C]^c[D]^d}{[A]^a[B]^b}$

Chemical reaction for the formation of ammonia is:

$N_2+3H_3\rightleftharpoons 2NH_3$

$k_c=1.6\times 10^2$

Expression for $k_c$ is:

$k_c=\frac{[NH_3]^2}{[H_2]^3[N_2]}$

$1.6\times 10^2=\frac{[NH_3]^2}{[H_2]^3[N_2]}$

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3 years ago

Balance NO + 02 -- NO2

Simora [160]

Answer:

NO + O2 -> NO2

it is balanced

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