Organic - Assignment

Chemistry

1 answer:

Molodets [167]3 years ago

8 0

Answer: You need to show us the actual assignment if you need help.

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How many grams of RbOH are present in 35.0 mL of a 5.50 M RbOH solution?

Ganezh [65]

I think 5.50 M x 35.0 mL x molar mass of RbOH = mass (g)

8 0

4 years ago

How many moles of oxygen are needed to burn 2.7 moles of methyl

QveST [7]

Answer:

3.38 moles of O2.

Explanation:

We'll begin by writing the balanced equation for the reaction. This is illustrated below:

4CH2OH + 5O2 → 4CO2 + 6H2O

From the balanced equation above,

4 moles of CH2OH required 5 moles of O2 for complete combustion.

Finally, we shall determine the number of mole of O2 needed to react with 2.7 moles of CH2OH. This can be obtained as follow:

From the balanced equation above,

4 moles of CH2OH required 5 moles of O2 for complete combustion.

Therefore, 2.7 moles of CH2OH will require = (2.7 × 5)/4 = 3.38 moles of O2 for complete combustion.

Thus, 3.38 moles of O2 is required.

5 0

3 years ago

Which one of the following statements best describes a solution with a pH of 3?

zalisa [80]

Statement D is the correct option as the solution will have pH of 3. It has an H3O+ ion concentration of 1 × $10^{-3}$ mol/L and is acidic.

Explanation:

It is given in question that solution must have pH of 3. The value if being less than 7 shows that solution is acidic. The pH value of 3 indicates that given solution is highly acidic and has strong acid. Strong acid gets fully dissociated into $H_{3}$ $O^{+}$ ions.