1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
wariber [46]
3 years ago
13

What is the molarity of formaldehyde in a solution containing 0.25 grams of formaldehyde per mL?

Chemistry
1 answer:
Vikentia [17]3 years ago
3 0

Answer:

8.33mol/L

Explanation:

First, let us calculate the molar mass of of formaldehyde (CH2O). This is illustrated below:

Molar Mass of CH2O = 12 + (2x1) + 16 = 12 + 2 + 16 = 30g/mol

Mass of CH2O from the question = 0.25g

Number of mole CH2O =?

Number of mole = Mass /Molar Mass

Number of mole of CH2O = 0.25/30 = 8.33x10^-3mole

Now we can calculate the molarity of formaldehyde (CH2O) as follow:

Number of mole of CH2O = 8.33x10^-3mole

Volume = 1mL

Converting 1mL to L, we have:

1000mL = 1L

Therefore 1mL = 1/1000 = 1x10^-3L

Molarity =?

Molarity = mole /Volume

Molarity = 8.33x10^-3mole/1x10^-3L

Molarity = 8.33mol/L

Therefore, the molarity of formaldehyde (CH2O) is 8.33mol/L

You might be interested in
Select the correct layer.<br> In which layer is lithification most likely to occur?
Vera_Pavlovna [14]

Answer:

"Subsoil" is the correct answer.

Explanation:

  • The method of transforming sediments become rocky solids is considered as Lithification. The floor stratum or level below the upper floors at the base of the floor is a Subsoil.
  • Sediments comprise materials particles like sand, pebbles, skeletons kind of bones as well as muck, that were transported and produced instead in water or perhaps wind someplace.
8 0
3 years ago
How many nonbonding electron pairs are there in the lewis structure of the peroxide ion, o22−?
Tom [10]
There is 6 non - bonding pairs.
Let me show you one easy method to do this.
o22-, oxygen valence electron = 6 here we have two so total 12, and -2 that means we add electrons so it’s all equal to 14 right.
whenever need to find lone pair, subtract the number you get with the lowest multiple of 8.
here we total 14 valence electron right so lowest multiple of 8 would be 8.
so 14 - 8 = 6 and that is our answer.
Let me know if you have Problem with chemistry.
8 0
3 years ago
Read 2 more answers
identify each material as a compound or a mixture. Caffeine contains hydrogen, carbon, nitrogen, and oxygen atoms in a fixed rat
vitfil [10]
Answer: caffeine is a compound.

Explanation:

1) As stated c<span>affeine contains hydrogen, carbon, nitrogen, and oxygen atoms in a fixed ratio.

2) The definition of compound is a pure substance formed by chemical bonding of two or more fifferent elements. That means a defined ratio of the elements in the compound, which conferes uniform and equal properties to every part of the compound.

Some examples of compounds are salt (NaCl), water (H2O), vinegard (CH3 COOH).

A mixture combines several elements or compounds, not bonded by chemical bonds but mixed in ratios which may vary.
</span>
7 0
3 years ago
Read 2 more answers
What is the molar mass of C4H10
Phantasy [73]
Your answer would be 58.12g/mol ;)
7 0
3 years ago
What was the ball's average speed during the time represented on the graph?
nadya68 [22]

Answer:

Explanation:

<em>0.5 i go to k12 i jus took the test</em>

4 0
2 years ago
Read 2 more answers
Other questions:
  • What kind of chemist studies chemical reactions involved in photosynthesis the process that plants use to make food?
    12·1 answer
  • How many atoms are there in 14.3 g of xenon?
    14·1 answer
  • 12L bromine gas =____g sodium bromide
    14·1 answer
  • How many kilowatt-hours of electricity are used to produce 4.50 kg of magnesium in the electrolysis of molten mgcl2 with an appl
    7·1 answer
  • How many valence electrons in Al(OH)4-
    15·2 answers
  • You put two open cans of soda on the table. You took one can from the refrigerator and the other from your car. When you open th
    11·2 answers
  • A solution is prepared by dissolving 150. grams of NaCl in 500 milliliters of water. What is the
    6·2 answers
  • Me ayudan xfa, doy corona :)
    7·1 answer
  • What is the most abundant element on Earth?
    8·1 answer
  • How do populations survive when the environment<br> changes?
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!