2 years ago

A compound with the empirical formula ch2 has a molar mass of 98 g/mol what is the molecular formula for this compound ?

1 answer:

7 0

Approximate molecular masses:
Molecular mass of C = 12
Molecular mass of H = 1

Let n = moles required for CH₂.
Then
nCH₂ = 98
n(12 + 2*1) = 98
14n = 98
n = 7

Answer: The molecular formula is 7CH₂

You might be interested in

The element californium (cf) sells for $1000 per µg. assuming 6.02 x 1023 atoms of cf have a mass of 251 grams, how many atoms o

saveliy_v [14]

Answer:- $2.40*10^1^0atoms$

Solution:- It is a simple unit conversion problem. We could solve this using dimensional analysis.

We know that, 1 US dollar = 100 cents

1 cent = 1 US penny

So, 1 US dollar = 100 US pennies

$1g=10^6\mu g$

Let's make the set up starting with 1 penny as:

$1penny(\frac{$1}{100pennies})(\frac{1\mu g}{$1000})(\frac{1g}{10^6\mu g})(\frac{6.02*10^2^3atoms}{251g})$

= $2.40*10^1^0atoms$

Therefore, we can bye $2.40*10^1^0atoms$ of Cf in one US penny.

3 0

2 years ago

Jupiters atmosphere is mostly made of ___

erastovalidia [21]

Jupiter's atmosphere is composed predominantly of hydrogen and helium, but if you have to select any one option then we can look at the percentage of existence of these elements that would be
<span>90 percent hydrogen.
remaining 10 percent is helium
so choose Hydrogen.</span>

3 0

3 years ago

____ can be found in many forms including in the chemicals found in food

Rzqust [24]

A. Chemical energy can be in many forms including in the chemicals found in food

4 0

2 years ago

Is how much a material opposes electric current.

krek1111 [17]

Answer:

Resistance

Explanation:

Resistance is the measure of the opposition of current in a circuit.

4 0

2 years ago

Does adding milk impact the health benefits of the tea? Use your understanding from this unit about solutions and food chemistry

mezya [45]

Yes, it mixes it and has vitamins in the tea.

5 0

3 years ago