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3 years ago

Write the chemical formula for the ionic compound formed by lithium and fluorine.

Chemistry

1 answer:

aev [14]3 years ago

3 0

Answer:

→ LiF

Explanation:

${ \rm{2Li _{(s)} + F _{2(g)} \dashrightarrow \: 2LiF _{(s)} }}$

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A student is asked to determine the molarity of a strong base by titrating it with 0.250 M solution of H2SO4. The students is in

Hoochie [10]

Answer: The concentration of hydroxide ions in the strong base solution is 0.625 M

Explanation:

To calculate the molarity of solution, we use the equation:

$\text{Molarity of the solution}=\frac{\text{Moles of solute}\times 1000}{\text{Volume of solution (in mL)}}$ .......(1)

For sulfuric acid:

Molarity of solution = 0.250 M

Volume of solution = (30.00 - 5.00) mL = 25.00 mL

Putting values in equation 1, we get:

$0.250M=\frac{\text{Moles of sulfuric acid}\times 1000}{25.00}\\\\\text{Moles of sulfuric acid}=\frac{0.250\times 25.00}{1000}=0.00625moles$

1 mole of sulfuric acid produces 2 moles of hydrogen ions and 1 mole of sulfate ions

Moles of hydrogen ions = $(2\times 0.00625)=0.0125moles$

At pH = 7

Moles of hydrogen ions = Moles of hydroxide ions = 0.0125 moles

Now, calculating the hydroxide ions in the base solution by using equation 1, we get:

Moles of hydroxide ions = 0.0125 moles

Volume of base solution = 20.0 mL

Putting values in equation 1, we get:

$\text{Molarity of }OH^-\text{ ions}=\frac{0.0125mol\times 1000}{20.0}\\\\\text{Molarity of }OH^-\text{ ions}=0.625M$

Hence, the concentration of hydroxide ions in the strong base solution is 0.625 M

5 0

4 years ago

Which substance can lead to addiction, or drug dependence, if abused?

worty [1.4K]

Answer:

Explanation:

All of those can produce happy chemicals which cause your brain to become dependent. The side effects can be life-threatening but if it makes your brain irrationally happy then it doesn't matter

7 0

3 years ago

What is the purpose of molecular models?

dsp73

Answer: to see if the matter is a compound, mixture, or element.

Explanation:

can you please help with my most recent question :)

6 0

3 years ago

Draw the structure of the major nitration product from the reaction of nitric acid with 1,3‑dimethylbenzene. Show all formal cha

solong [7]

The 2,4 and 5 positions are accessible for nitration of 1,3‑dimethylbenzene. The final product is shown in the image attached.

<h3>What is nitration?</h3>

Nitration is a type of reaction in which the nitro group (-NO2) is introduced to an aromatic ring. We have to note that in the compound 1,3‑dimethylbenzene, the 2,4 and 5 positions are accessible for nitration as shown.

Hence, the nitration of 1,3‑dimethylbenzene occurs as shown in the image attached with the compound shown being the major product.

Learn more about nitration: brainly.com/question/5346392

7 0

2 years ago

Calculate the pH of a 0.0224M HCl solution.

kap26 [50]

Answer: 1.65

Explanation:

For a 0.0224M HCl solution the concentration of the hydrogen ions,

[H+] = is 0.0224 mol/L (i.e. 0.0224 M)

pH = −log[H+]

Substituting H+ = 0.0224 into the equation

pH = - log[0.0224]

pH = 1.649

pH = 1.65

6 0

4 years ago