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
Butoxors [25]
2 years ago
9

What is the volume of 4.78g of O2 gas at STP?

Chemistry
2 answers:
My name is Ann [436]2 years ago
8 0

Answer:

Explanation:

The trick here is to realize that if you know the volume of a gas at STP, you can use the fact that

1

mole of any ideal gas occupies

22.7 L

under STP conditions to calculate how many moles of gas you have in your sample.

Under STP conditions:

1 mole of an ideal gas = 22.7 L

−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−

In your case, you know that your sample of gas occupies

2.28 L

under STP conditions, which are currently defined as a pressure of

100 kPa

and a temperature of

0

∘

C

.

This means that your sample will contain

2.28

L

⋅

molar volume of a gas at STP



1 mole gas

22.7

L

=

0.10044 moles gas

Now, the molar mass of the gas is the mass of exactly

1

mole of the gas. In your case, you know that you get

3.78 g

for every

0.10044

moles, which means that you have

1

mole

⋅

3.78 g

0.10044

moles

=

37.6 g

Since this is the mass of

1

mole of gas, you can say that the molar mass of the gas is

molar mass = 37.6 g mol

−

1

−−−−−−−−−−−−−−−−−−−−−−−

Nonamiya [84]2 years ago
6 0
I’m not surreeeeeeeeeee
You might be interested in
Describe the scale used to measure the basicity of a substance. Demonstrate how you could differentiate a weak base from a stron
Katena32 [7]

Explanation:

You can determine the basicity of a substance by pH or pOH. The higher the pH, the stronger base a substance has. As for pOH, it is the exact opposite.

3 0
2 years ago
How many acetate ions are formed when three formula units of zinc acetate dissociate?
jeyben [28]
A formula unit is the same as the empirical formula of a compound or an ionic molecule. It is the lowest ratio of the atoms in the compound or ion. Zinc acetate ions dissociates into zinc ions and acetate ions. The dissociation reaction is expressed as follows:
Zn(O2CCH3)2 = Zn2+ + 2(O2CCH3)1-

We determine the amount of acetate ions produced as follows:

Moles Zn(O2CCH3)2 = (3 formula units Zn(O2CCH3)2) ( 1 mol / 6.022x10^23 formula units) = 4.98x10^-24 mol Zn(O2CCH3)2
moles (O2CCH3)1- = 4.98x10^-24 mol Zn(O2CCH3)2 ( 2 mol (O2CCH3)1- / 1 mol Zn(O2CCH3)2 ) = 9.96x10^-24 mol (O2CCH3)1-
# of acetate ions = 9.96x10^-24 mol (O2CCH3)1- ( 6.022x10^23 ions / 1 mol (O2CCH3)1-) = 6 acetate ions
3 0
3 years ago
What's a wind up toy useful energy output
exis [7]
Potential energy stored in a spring => kinetic energy of a toy
6 0
3 years ago
PLEASE HELP!<br><br> Count the total number of atoms in H 2 O:<br><br> 2<br> 3<br> 4<br> 5<br> 6
Darya [45]
3
two hydrogen and 1 oxygen
8 0
3 years ago
Read 2 more answers
Draw the product formed when 2-butanol undergoes reaction with TsCl and Et3N. CH3C6H4SO2Cl.
Pie

Answer:

Explanation:

In organic chemistry, the reaction between 2-butanol with TsCl and Et3N is known as the tosylation of the alcohol hydroxyl group. Alcohol is being changed to tosylate by the use of tosyl chloride under the influence of a base. Tosylation of alcohol is an example of a nucleophilic substitution reaction. From the image attached below, we will see how the reaction between 2-butanol proceed into the product by using tosyl chloride and a base(Et3N).

4 0
3 years ago
Other questions:
  • I really need help please help me I have 10 minutes to finish
    5·1 answer
  • The C_7 compound which gives 3 signals in the broadband proton-decoupled ^13C spectrum could be:______
    5·1 answer
  • Convert 4.86 x 104g of Mg to moles.
    13·2 answers
  • Organize the following metals from least metallic to most metallic :barium,zinc,iron, and strontium
    5·1 answer
  • What’s is a logical way that you could begin to investigate why your tire had low air pressure?
    13·1 answer
  • The speed you read from your speedometer is your ____________________. *
    9·1 answer
  • Which is an appropriate layering process for a compost pile?
    11·2 answers
  • FREE POINTS<br><br> DONT FORGET TO GIVE A HEART ON MY ACCOUNT HELPS
    12·2 answers
  • Is it okay ?<br>off it's difficult to find a pic for a boy ​
    14·2 answers
  • How should the ph of a 0.1 m solution of nac2h3o2 compare with that of a 0.1 m solution of kc2h3o2?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!