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3 years ago

13

What inorganic molecule is carbon normally found in?

1 answer:

DiKsa [7]3 years ago

6 0

It’s CO2

Carbon dioxide

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Which choice best describes what would happen if a cube with a density of 0.2 g/mL were placed in a container of water?

Andrew [12]

Answer:

A. It would float with about 80% of the cube below the surface of the water and 20% above the surface.

Explanation:

The choice that best describes what happens to cube of the given density value is that it would float with about 80% of the cube would be below the surface of the water and 20% above the surface.

Density is the mass per unit volume of a substance. The more mass a body has relative to volume, the great it's density. In short, density is directly proportional to mass and inversely related to volume.

The density of water is 1g/mL

If the density of the cube were to be the same with that of water, the substance will just mix up with water .

Here the density is less than that of water.

The density is 0.2g/mL

Therefore, 20% will stay afloat and 80% will be below the surface of the water.

5 0

3 years ago

An atom of lithium 7 has an equal number of

lukranit [14]

Electrons and protons because they are essentially always the same

5 0

4 years ago

Read 2 more answers

The equilibrium constant, Kc, for the following reaction is 5.10×10-6 at 548 K. NH4Cl(s) NH3(g) + HCl(g) Calculate the equilibri

levacccp [35]

<u>Answer:</u> The equilibrium concentration of HCl is $2.26\times 10^{-3}M$

<u>Explanation:</u>

We are given:

Moles of $NH_4Cl(s)$ = 0.564 moles

Volume of vessel = 1.00 L

Molarity is calculated by using the equation:

$\text{Molarity}=\frac{\text{Number of moles}}{\text{Volume of solution (in L)}}$

Molarity of $NH_4Cl=\frac{0.564}{1}=0.564M$

The given chemical equation follows:

$NH_4Cl(s)\rightleftharpoons NH_3(g)+HCl(g)$

<u>Initial:</u> 0.564

<u>At eqllm:</u> 0.564-x x x

The expression of $K_c$ for above equation follows:

$K_c=[NH_3][HCl]$

The concentration of pure solid and pure liquid is taken as 1.

We are given:

$K_c=5.10\times 10^{-6}$

Putting values in above equation, we get:

$5.10\times 10^{-6}=x\times x\\\\x=2.26\times 10^{-3}M,-2.26\times 10^{-3}M$

Negative sign is neglected because concentration cannot be negative.

So, $[HCl]=2.26\times 10^{-3}M$

Hence, the equilibrium concentration of HCl is $2.26\times 10^{-3}M$

5 0

3 years ago

Consider the following reaction.Cr2O3(s) + 3CCl4(l) 2CrCl3(s) + 3COCl2(g). When the green solid is mixed with the colorless liq

Elena L [17]

Answer:

The answer to your question is: letter B

Explanation:

Reaction

Cr2O3(s) + 3CCl4(l) ⇒ 2CrCl3(s) + 3COCl2(g)

From the information given and the reaction, we can conclude that:

Green solid = Cr2O3 (s) "s" means solid

Colorless liquid = CCl4 (l) "l" means liquid and is the other reactant

Purple solid = CrCl3(s) CrCl3 is purple and "s" solid

Then, as a green specks remains it means that the excess reactant is Cr2O3, so, CCl4 is the limiting reactant.

6 0

4 years ago

How are convalent molecules named?

atroni [7]

Answer: convalent compounds share two elements in forming a BOND between atoms

Explanation: if you dont believe me look it up and google will give you the same answer

please give brainliest

4 0

3 years ago

Read 2 more answers