All categories

3 years ago

Electromagnetic waves are not mechanical waves, which means they can travel in a:

Chemistry

1 answer:

Ostrovityanka [42]3 years ago

5 0

Answer:

Electromagnetic waves differ from mechanical waves in that they do not require a medium to propagate. This means that electromagnetic waves can travel not only through air and solid materials, but also through the vacuum of space.

Explanation:

You might be interested in

2 H2S(g) ⇄ 2 H2(g) + S2(g) Kc = 9.3× 10-8 at 400ºC 0.47 moles of H2S are placed in a 3.0 L container and the system is allowed t

Anon25 [30]

Answer: The concentration of hydrogen gas at equilibrium is $1.648\times 10^{-3}M$

Explanation:

We are given:

Initial moles of hydrogen sulfide gas = 0.47 moles

Volume of the container = 3.0 L

The molarity of solution is calculated by using the equation:

$\text{Molarity}=\frac{\text{Moles of solute}}{\text{Volume of the solution}}$

So, $\text{Initial molarity of hydrogen sulfide gas}=\frac{0.47}{3}=0.1567M$

The given chemical equation follows:

$2H_2S(g)\rightleftharpoons 2H_2(g)+S_2(g)$

Initial: 0.1567

At eqllm: 0.1567-2x 2x x

The expression of $K_c$ for above equation follows:

$K_c=\frac{[H_2]^2[S_2]}{[H_2S]^2}$

We are given:

$K_c=9.3\times 10^{-8}$

Putting values in above equation, we get:

$9.3\times 10^{-8}=\frac{(2x)^2\times x}{(0.1567-2x)^2}\\\\x=8.24\times 10^{-4}$

So, equilibrium concentration of hydrogen gas = $2x=(2\times 8.24\times 10^{-4})=1.648\times 10^{-3}M$

Hence, the concentration of hydrogen gas at equilibrium is $1.648\times 10^{-3}M$

7 0

3 years ago

A neutral atom has 12 protons. In chemical bonding, which is the most likely charge of the ion?

Rina8888 [55]

It’s most likely A. 2+

6 0

3 years ago

Calculate the molality of a 0.677 m ethanol ( c 2 h 5 o h ) solution whose density is 0.588 g/ml

ANEK [815]

The molality of a 0.677 m ethanol ( c 2 h 5 o h ) solution whose density is 0.588 g/ml.

What is molality and molarity?

The number of solvent moles per kilogram is known as molality. Because the mass of the solute and solvent in the solution remains constant, molality is the preferred concentration transfer method.

Molarity, also referred to as molar concentration, is the quantity of a material expressed as moles per litre of solution. Solutions marked with a molar concentration have a capital M. One mole of solvent per litre is present in a 1.0 M solution.

Molar mass (w) of C2H5OH = 46g

Molarity(M) = 0.677M

Density(D) = 0.588g/mol

Molality(m) = M/D * (1000 + w*M)

= 1187.2m

To learn more about molality and molarity from the given link below,

brainly.com/question/14770448

#SPJ4

4 0

1 year ago

Consider the following balanced equation:

Alenkasestr [34]

Answer:

Explanation:

bs I just done that on my work and asked my teacher if it was right she said it was

3 0

4 years ago

** H₂ + O2-> Balancing equations from a reaction

goblinko [34]

Answer:

2H2+O2->2H2O

Explanation:

You have to balance the equation, you have 4 hydrogen and 2 oxygen atoms

8 0

3 years ago