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Hunter-Best [27]

3 years ago

7

I don’t understand this one at all

1 answer:

harkovskaia [24]3 years ago

3 0

Answer:

NaF(aq)

Explanation:

When sodium bromide react with fluorine sodium fluoride is formed. Florine is more reactive than bromine that's why it displace the bromine and form compound with sodium.

Chemical reaction:

NaBr(aq) + F₂(aq) → NaF(aq) + Br₂(aq)

Balanced chemical equation:

2NaBr(aq) + F₂(aq) → 2NaF(aq) + Br₂(aq)

Sodium is alkali metal and have one valance electron. It loses one electron and show +1 charge. While all halogen elements need one electron to complete the octet and show -1 charge.

That's why one halogen atom is combine with one sodium atom to make overall compound neutral.

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What is Chemistry? What topics are covered in chemistry?

salantis [7]

Answer:

Taylor lyrics......?????

4 0

2 years ago

Read 2 more answers

What is the density of a substance that has a volume of 14 millimeters and a mass of 13.2 grams.

Contact [7]

Answer:

<h2>0.94 g/mL</h2>

Explanation:

The density of a substance can be found by using the formula

$density = \frac{mass}{volume} \\$

From the question we have

$density = \frac{13.2}{14} \\ = 0.94285...$

We have the final answer as

<h3>0.94 g/mL</h3>

Hope this helps you

6 0

2 years ago

What is the molarity (M) of chloride ions in a solution prepared by mixing 155 ml of 0.276 M calcium chloride with 384 ml of 0.4

sesenic [268]

Answer: The concentration of $Cl^-$ ions in the resulting solution is 1.16 M.

Explanation:

To calculate the molarity of the solution after mixing 2 solutions, we use the equation:

$M=\frac{n_1M_1V_1+n_2M_2V_2}{V_1+V_2}$

where,

$n_1,M_1\text{ and }V_1$ are the n-factor, molarity and volume of the $CaCl_2$

$n_2,M_2\text{ and }V_2$ are the n-factor, molarity and volume of the $AlCl_3$

We are given:

$n_1=2\\M_1=0.276M\\V_1=155mL\\n_2=3\\M_2=0.471M\\V_2=384mL$

Putting all the values in above equation, we get

$M=\frac{(2\times 0.276\times 155)+(3\times 0.471\times 384)}{155+384}\\\\M=1.16M$

The concentration of $Cl^-$ ions in the resulting solution will be same as the molarity of solution which is 1.16 M.

Hence, the concentration of $Cl^-$ ions in the resulting solution is 1.16 M.

6 0

3 years ago

Which of these is NOT true about electromagnets?

Alex17521 [72]

Answer:

Permanent = false

Explanation:

All of the other choices are true

4 0

1 year ago

What % of the earth's freshwater is found in glaciers and ice packs? 0.03% 0.03% 3% 3% 24.9% 24.9% 75%

Westkost [7]

Answer:

En verdad solo el 0,025% del agua de la tierra es dulce

Explanation:

7 0

2 years ago