All categories

4 years ago

What is the concentration in molarity of a solution made using 30.0 grams of CH3OH in 300.0 mL of water?

Chemistry

2 answers:

jasenka [17]4 years ago

4 0

The answer is in the attached photo

Brums [2.3K]4 years ago

4 0

Answer:

This solution has a molarity of 3.12 M = 3.12 mol/ L

Explanation:

Step 1: Data given

mass of CH3OH = 30.0 grams

Volume of the solution = 300.0 mL = 0.3 L

Molar mass of CH3OH (see periodic table)

⇒ C = 12 g/mol

⇒ H = 1.01 g/mol

⇒ O = 16 g/mol

⇒ 1*12 + 4*1.01 + 16 = 32.04 g/mol

Step 2: Calculate number of moles of CH3OH

Moles CH3OH = mass CH3OH / Molar mass CH3OH

Moles CH3OH = 30.0 grams / 32.04 g/mol

Moles CH3OH = 0.936 mol

Step 3: Calculate molarity of the solution

Molarity of solution = moles CH3OH / volume of water

Molarity solution = 0.936 mol /0.300 L

Molarity of the solution = 3.12 M

This solution has a molarity of 3.12 M = 3.12 mol/ L

You might be interested in

Describe in detail how you would determine the density of a potato that is too large to fit into a graduated cylinder. (Hint: Th

Mnenie [13.5K]

Answer:

The density of a potato is $\dfrac{M}{V'}$

Explanation:

Given that,

A potato that is too large to fit into a graduated cylinder.

Let us consider the mass of potato is M and volume of entire potato is V'.

The volume of water is V.

We know that,

Density :

The density is equal to the mass divided by volume.

In mathematically,

$\rho=\dfrac{m}{V}$

Where, m = mass

V = volume

We need to calculate the volume of potato

Using formula for volume

$V'=V''-V$

Where, V' = volume of potato

V''=Volume of combine water and potato

V = volume of water

We need to determine the density of a potato

Using formula of density

$Density\ of\ potato=\dfrac{Mass\ of\ potato}{volume\ of\ entire\ potato}$

Put the value into the formula

$\rho=\dfrac{M}{V'}$

Hence, The density of a potato is $\dfrac{M}{V'}$

7 0

3 years ago

HeLP PLZ!!!!!!!Determine whether each of the following is a covalent or ionic compound? im not sure if im right. Covalent: OF2,P

Svetradugi [14.3K]

Ionic compounds are composed of a non-metal as the anion and a metal as the cation. Covalent compounds on the other hand are composed of both non-metals from both charges. In this case, OF2 is covalent, PBr3 is covalent, SeO2 is ionic, C5H12 is covalent, and CBr4 is covalent.

5 0

3 years ago

To fight a bacterial infection, a patient was given an antibiotic to take for 10 days.

Bezzdna [24]

Answer: B

Explanation: trust me

8 0

3 years ago

If an object is not moving, it has no

Tanzania [10]

Answer:

that answer is B

Explanation:

the answer is b luv

5 0

4 years ago

Read 2 more answers

Which numbers are used? Consider the balanced chemical equation that follows. You are asked to determine how many moles of water

velikii [3]

I am assuming that the balanced equation is
2H₂ + O₂ ⇒ 2H₂O
Since the hydrogen is the limiting reagent (meaning if the hydrogen runs out the reaction stops), we need to compare the mole ratio between hydrogen and water.

The mole ratio between H₂ and H₂O is 2:2, or 1:1 (as seen on the coefficients of the balanced equation)
And so for every mole of hydrogen, it will be equal to water. Since hydrogen is 4 moles, 4 moles of water would be created.

So we use the coefficients of H₂ and H₂O in order to answer this question.

7 0

4 years ago

Read 2 more answers