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
soldi70 [24.7K]
3 years ago
9

The empirical formula of a compound is determined to be CH2O, and its molecular mass is found to be 90.087 g/mol. Determine the

molecular formula of the compound, showing your solution.
Chemistry
2 answers:
Grace [21]3 years ago
7 0
<span>In order to do that, we first have to calculate the "molar mass" of empirical unit

12+2*1+16 = 30

so 90/30 = 3

so you have 3*(CH2O) --> C3H6O3

hope this helps</span>
enot [183]3 years ago
5 0
The empirical formula of a compound is determined to be CH2O, and its molecular mass is found to be 90.087 g/mol. Determine the molecular formula of the compound, showing your solution.

Answer: This is actually quite simple, first we have to calculate the molar mass of empirical unit. Therefore we have 12+2*1+16 = 30. Then we solve 90/30 = 3. Finally we end up with 3*(CH2O) --> C3H6O3.

I hope it helps, Regards.
You might be interested in
Fill in the blanks (Balancing chemical reactions)<br>BRAINLIEST
Artemon [7]

\huge{ \mathfrak{  \underline{ Answer \:  \:  ✓ }}}

The 2 in front of Na in 2Na + Cl_2 \rightarrow  2NaCl is <u>Coefficient.</u>

_____________________________

The _2 after Cl_2 in the same equation is <u>sub </u><u>script</u><u>.</u>

_____________________________

There are two atoms of Na in 2NaCl

_____________________________

\mathrm{ \#TeeNForeveR}

7 0
3 years ago
if the theoretical yield of a reaction is 26.0 grams and you actually recovered 22.0 grams what is the precent yield
netineya [11]
Percentage Yield = (Actual Yield ÷ Theoretical Yield) × 100  

∴ if theoretical yield is 26 g, but only 22.0 is recovered from the reaction, 
then Percentage Yield = (22 g ÷ 26 g) × 100  
                                       =  84.6 %
8 0
3 years ago
CHEM HELP!
sweet [91]

So let's convert this amount of mL to grams:

\frac{13.6g}{1mL}*1.2mL=16.32g

Then we need to convert to moles using the molar weight found on the periodic table for mercury (Hg):

\frac{1mole}{200.59g}*16.32g=8.135*10^{-2}mol

Then we need to convert moles to atoms using Avogadro's number:

\frac{6.022*10^{23}atoms}{1mole} *[8.135*10^{-2}mol]=4.90*10^{22}atoms

So now we know that in 1.2 mL of liquid mercury, there are 4.90*10^{22}atoms present.

4 0
3 years ago
A solution is prepared by dissolving 8.75 grams of sodium chloride in enough volume of water to produce 112.0 grams of the NaCl
ICE Princess25 [194]

Answer : The percent by mass of the solution is 7.81 %

Explanation : Given,

Mass of NaCl = 8.75 g

Mass of solution = 112.0 g

Now we have to determine the percent by mass of the solution.

\text{Mass percent}=\frac{\text{Mass of NaCl}}{\text{Mass of solution}}\times 100

Putting values in above equation, we get:

\text{Mass percent}=\frac{8.75g}{112.0g}\times 100=7.81\%

Therefore, the percent by mass of the solution is 7.81 %

6 0
3 years ago
A decomposition reaction always breaks a compound down into two pure elements. True or False.
skelet666 [1.2K]

False-- most of the time not enough energy is put into the system, so the compounds or whatever cant break down fully into their elements

6 0
3 years ago
Read 2 more answers
Other questions:
  • Why has JET not been able to get fusion reactions to work?
    13·1 answer
  • Is water wet? If so explain if not also explain please!
    7·2 answers
  • Does this change in temperature of the water and the mixing of liquids in the calorimeter represent an increase or decrease in e
    15·1 answer
  • Witch component of the atom has the least mass. A. protons
    14·1 answer
  • A 175 g piece of iron and a 175 g piece
    13·1 answer
  • Sentences bilang repeated addition. Isulat ang iyong sagot sa
    8·1 answer
  • how many grams of carbon tetrachloride can be produced from reacting 709.0 grams of chlorine (CI2) with excess methane?
    10·1 answer
  • A 400g sample is found to be 27% aluminum. What is the mass percent of A1 in the sample?
    11·1 answer
  • Boron occurs naturally as two isotopes. What is the difference between these isotopes?
    13·1 answer
  • Question 4 of 10
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!