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
jeka94
4 years ago
5

What mass of compound must be weighed out to have a 0.0223 mol sample of H2C2O4 (M=90.04 g/mol)?

Chemistry
1 answer:
rodikova [14]4 years ago
5 0
Mass of  H2C2O4 :

mm = 90.04 g/mol

number of moles : 0.0223 moles

m = n * mm

m = 0.0223 * 90.04

m = 2.007 g 

hope this helps!.

You might be interested in
An atom that undergoes radioactive decay and has a large nucleus most likely contains
iogann1982 [59]
I believe the correct response would be A. More neutrons than protons.
3 0
3 years ago
Read 2 more answers
Using the periodic table, choose the more reactive nonmetal.<br> Te or O
jolli1 [7]

the answer is Te because O is oxygen.

5 0
3 years ago
Read 2 more answers
How are stars and comets different?
ehidna [41]
The answer is letter C.

Because we classify something as a star when it is: a large ball of gas that undergoes nuclear fusion. Given this definition, a comet is not a star. A comet is a ball of ice and dirt hurtling through space, it shines only because it reflects ligh
3 0
3 years ago
Chemistry acids and bases
Ket [755]

Answer:

Imma just say acids have more acidity and bases have lower acidity...

4 0
3 years ago
What is the limiting reagent when a 2.00 g sample of ammonia is mixed with 4.00 g of oxygen?​
UNO [17]

Answer:

Ammonia is limiting reactant

Amount of oxygen left  = 0.035 mol

Explanation:

Masa of ammonia = 2.00 g

Mass of oxygen = 4.00 g

Which is limiting reactant = ?

Balance chemical equation:

4NH₃ + 3O₂     →     2N₂ + 6H₂O

Number of moles of ammonia:

Number of moles = mass/molar mass

Number of moles = 2.00 g/ 17 g/mol

Number of moles = 0.12 mol

Number of moles of oxygen:

Number of moles = mass/molar mass

Number of moles = 4.00 g/ 32 g/mol

Number of moles = 0.125 mol

Now we will compare the moles of ammonia and oxygen with water and nitrogen.

                      NH₃          :            N₂

                        4             :             2

                      0.12           :           2/4×0.12 = 0.06

                      NH₃         :            H₂O

                        4            :             6

                        0.12       :           6/4×0.12 = 0.18

                       

                       O₂            :            N₂

                        3             :             2

                      0.125        :           2/3×0.125 = 0.08

                        O₂           :            H₂O

                        3              :             6

                        0.125       :           6/3×0.125 = 0.25

The number of moles of water and nitrogen formed by ammonia are less thus ammonia will be limiting reactant.

Amount of oxygen left:

                        NH₃          :             O₂

                           4            :              3

                           0.12       :          3/4×0.12= 0.09

Amount of oxygen react = 0.09 mol

Amount of oxygen left  = 0.125 - 0.09 = 0.035 mol

3 0
3 years ago
Other questions:
  • How to calculate the mass of solid sodium hydroxide needed to prepare 200 ml of a 0.040m solution. if one pellet of sodium hydro
    8·1 answer
  • How easily one thing one thing dissolved into another defined what term? A)elasticity B)solubility C)malleability D)conductivity
    14·2 answers
  • Which of the following is false?
    12·2 answers
  • Explain the large difference in boiling points between CH4 and CBr4
    9·1 answer
  • BEANS so if you took you out of screw what would you put
    8·1 answer
  • Hemistry in the Earth System - 2019
    9·1 answer
  • What is the major role of wind on earth?
    12·2 answers
  • Help please thank you!!!
    14·2 answers
  • The Temperature of the earth gets______ as you get closer to the _______ and ________ as you move towards the_____
    11·1 answer
  • A cell phone manufacturer recalled some 50 million lithium batteries installed in cell phones because the batteries were at risk
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!