Chemistry, 22.07.2019 02:00 meganwintergirl

Asample of a compound contains 60.0 g c and 5.05 g h. its molar mass is 78.12 g/mol. what is the compound’s molecular formula? ch c2h2 c6h6 c6h

Answers: 2

Show answers

Answers

Step 1: Calculate Moles for each Element:

Mole of C = 60.0 / 12 = 5

Mole of H = 5.05 / 1.008 = 5.009

Step 2: Calculate Mole Ratio:
Divide each mole value with least mole value.

H : C

5.009/5     : 5/5

1 : 1
So,
Empirical Formula = C₁H₁ or CnHn (1)

Step 3: Calculate Molecular Formula:
By using formula,
n = Molecular Mass / Empirical Formula Mass

Molecular Mass = 78.12 g/mol

Empirical Formula Mass = 12 + 1 = 13   ∴ C = 12 & H = 1
So,
n = 78.12 / 13

n = 6

Putting value of n in eq. 1,

C₆H₆
Result:
  The correct answer is C₆H₆.

Answer from: Quest

out of these options:

ability to burn paper

pure sodium reacting violently with water

the boiling point of water

helium does not tend to react with anything

i would say this is a physical property:

helium does not tend to react with anything

why? :

i said helium does not tend to react with anything because well, it reacts to ! but ability to burn paper, pure sodium reacting violently with water, & the boiling point of water are chemical or

physical properties: the properties of a substance that can be observed without changing the chemical makeup of the substance

chemical properties: properties of a substance relating to the chemical nature and reactivity of the substance

Answer from: Quest

smooth muscle is composed of involuntary muscles found within the walls of organs and structures such as the esophagus, stomach, intestines, and blood vessels. those muscles push materials like food or blood through organs. unlike skeletal muscle, smooth muscle can never be under your control.

Another question on Chemistry

Chemistry, 22.06.2019 00:30

What does x represent in the formula for the compound xcl4?

Answers: 2

Answer

Chemistry, 22.06.2019 02:30

In pea plants, the allele for tallness (t) is dominant to the allele for shortness (t). in the cross between a tall pea plant and a short pea plant shown below, what is the probability that the resulting offspring will be tall? whats the percent

Answers: 1

Answer

Chemistry, 22.06.2019 03:00

Which statement is best described as a atom

Answers: 1

Answer

Chemistry, 22.06.2019 09:00

What is the percentage composition of carbon in the compound ch4

Answers: 1

Answer

You know the right answer?

Asample of a compound contains 60.0 g c and 5.05 g h. its molar mass is 78.12 g/mol. what is the com...