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2 years ago

Which of the following have the correct pairing of ion charge to the number of protons and electrons that would

Chemistry

1 answer:

viktelen [127]2 years ago

4 0

Answer:

Explanation:

O-2 means that there are 2 more electrons than protons. This one is incorrect.

Na + 1 is correct. 11 protons and 10 electrons.

N-3 is correct 7 protons and 10 electrons.

AL+3 is incorrect. It goes the other way 13 protons 10 electrons.

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Why are leaves different colors?

Marina86 [1]

Why are leaves different colors?
The chlorophyll breaks down

6 0

2 years ago

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]

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

Explanation:

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:

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

Initial: 0.564

At eqllm: 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

Is calcium carbonate a compound element or mixture?

uysha [10]

It's a compound because it's formed from an ionic bond between calcium and carbon so it's an ionic compound

7 0

3 years ago

What is the energy for each question in Joules?

beks73 [17]

Answer:

Hello, there!

In order to solve problems like this DO PEMDAS

The Exponent:

So, equals 4

Your problem becomes

Now we have to do what is in the (

( the is a )

And

Problem becomes

So, this means that your answer would be

Good luck on your assignment and enjoy your day!

kjExplanation:

7 0

2 years ago

.............................................................

mafiozo [28]

5 oxygen atoms are there in the product

4 0

3 years ago

Read 2 more answers