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
Slav-nsk [51]
3 years ago
12

A compound has a molar mass of 90. grams per mole and the empirical formula CH2O. What is the molecular formula of this compound

?
Chemistry
1 answer:
k0ka [10]3 years ago
7 0

Answer:

C₃H₆O₃

Explanation:

Data:

EF = CH₂O

MM = 90. g/mol

Calculations:

EF Mass = (12.01 + 2.016  + 16.00) u  = 30.03 u

The molecular formula is an integral multiple of the empirical formula.

MF = (EF)ₙ

n = \dfrac{\text{MF Mass}}{\text{EF Mass }} = \dfrac{\text{90. u}}{\text{30.03 u}} = 3.00  \approx 3

MF = (CH₂O)₃ = C₃H₆O₃

You might be interested in
Bodies at _____ tend to remain at rest.
Klio2033 [76]

Answer:

C.

Explanation:

Newton's 3rd law of motion: Inertia. It states that bodies at rest tend to stay at rest.

8 0
3 years ago
Read 2 more answers
8. How much enthalpy/heat is transferred when 0.5113
Gennadij [26K]
First convert to moles:
0.5113 g / 17 g/mol = 0.0301 mol

Now create a ratio based on the reaction provided to solve for the unknown:

4 NH3 / -905.4 kJ = 0.0301 mol NH3 / x kJ
x = -6.808 kJ
8 0
3 years ago
Which of the following is a characteristic of<br> a salt?
alexdok [17]

Answer:

Salts can be several different colors and may be any of the five tastes, including salty, sweet, bitter, sour or savory. Their odor depends on the acid and base it is comprised of. Salts comprised of strong acids and bases, called strong salts, are odorless.

8 0
3 years ago
Read 2 more answers
Why is knowing the density of water important to us? Give a reasonable answer
Ahat [919]
Measuring density is very important for many different industries because the density measurement will help determine the characteristics of a material, for example, whether the material will float or sink. Knowing the density of a material helps in determining the mass and volume of a material, all of which are extremely important measurements in all industries.

11




Related questions (More answers below)
8 0
2 years ago
how many moles of silicon are in 245 g of silicon? a. 8.72 mol b. 28.0 mol c. 1.10 × 10-1 mol d. 6.90 × 103 mol
il63 [147K]
Atomic mass silicon = 28.085 u

1 mol Si ---------------- 28.085 g  
?  ------------------------ 245 g

245 x 1 / 28.085 => 8.72 mol

answer A
8 0
3 years ago
Read 2 more answers
Other questions:
  • You are assembling cars, and your job is to put the wheels on the vehicles. You have 3520 wheels, 14040 nuts (4 nuts needed per
    8·1 answer
  • Where on a bicycle might you find a pulley?
    15·2 answers
  • A box is pushed down at an angle of 32 degrees on a rough surface. The box moves to the right.
    9·1 answer
  • If a particular ore contains 55.1 % calcium phosphate, what minimum mass of the ore must be processed to
    12·1 answer
  • Help me out? thank you.
    5·2 answers
  • Can some answer this?
    6·1 answer
  • Can you solve this. <br>I need it. <br>:) :):)​
    15·1 answer
  • Which statement best describes an O3 molecule?<br> ► View Available Hint(s)
    15·1 answer
  • In order to dilute 40.0 mL of 0.600 M HCl to 0.200 M, the volume of water that would need to be added would be 200 mL. 80.0 mL.
    6·1 answer
  • A concentration cell is constructed using two NI electrodes with Ni2 concentration of 1. 0 m and 1. 0 x 10^-4 m in the two half-
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!