2 years ago

Scientists believe that the earth's core is:

Chemistry

1 answer:

Rus_ich [418]2 years ago

5 0

They believe that its solid and that the inner part of the core in iron

You might be interested in

What is the molar mass of CO2

mina [271]

Molar mass of CO2 = 44.01 g/mol

5 0

3 years ago

What happened to the sound as vibration of an object increase in strength

svlad2 [7]

Answer:

A.The sound becomes louder.

And

C.The sound waves get further.

Explanation:

Louder the sound it will travel long.

5 0

2 years ago

. Ashley is identifying insects and finds a camo moth. A camo moth appears like a leaf and is able to easily blend in with its s

In-s [12.5K]

I think the answer is C

5 0

3 years ago

Read 2 more answers

How does the law of conservation of mass apply to this reaction:Mg + 2HCl → H2 + MgCl2?

krok68 [10]

The law of conservation of mass applies to every reaction. In this case, you start with 1 Mg, 2 H, and 2CL and end up with the same five only their bonds have been rearranged, or in other words, they are joined up differently.

5 0

2 years ago

Consider the reaction. PCl5(g)↽−−⇀PCl3(g)+Cl2(g) K=0.042 The concentrations of the products at equilibrium are [PCl3]=0.18 M and

tatyana61 [14]

<u>Answer:</u> The equilibrium concentration of $PCl_5$ is 1.285 M.

<u>Explanation:</u>

The chemical equation for the decomposition of phosphorus pentachloride follows:

$PCl_5(g)\rightleftharpoons PCl_3(g)+Cl_2(g)$

The expression for equilibrium constant is given as:

$K_c=\frac{[PCl_3][Cl_2]}{[PCl_5]}$

We are given:

$K_c=0.042$

$[PCl_3]=0.18M$

$[Cl_2]=0.30M$

The concentration of solid substances are taken to be 1. Thus, they do not appear in the equilibrium constant expression.

Putting values in above equation, we get:

$0.042=\frac{0.18\times 0.30}{[PCl_5]}$

$[PCl_5]=1.285$

Hence, the equilibrium concentration of $PCl_5$ is 1.285 M.

6 0

3 years ago