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
Yuri [45]
3 years ago
9

A Helium Balloon contains 24.3 moles of Helium Gas. How many grams of Helium is this?

Chemistry
2 answers:
mihalych1998 [28]3 years ago
6 0

Answer:

C) 97.2g

Explanation:

Information given;

- Calculate Number of moles

- Mass of Helium

Before proceeding, it is important to know the relationship between number of moles, mass and molar mass.

Generally 1 mole of a atom weighs as much as its molar mass. Given that the molar mass of Helium is 4.00g/mol.

It means one mole of Helium weighs 4 g.

How grams then do 24.3 moles weigh?

1 mol = 4.00g

24.3 mol = x g

Cross multiplication yields;

x = (24.3 * 4) / 1

x = 97.2 g

Gnesinka [82]3 years ago
4 0
Mass= number of moles multiply Mass of one mole
= 24.3 multiplied by 4
= 96.2
You might be interested in
What is the outer layer of the suns atmosphere?
sattari [20]
The outer layers are the photosphere the chromosphere the transition region in the corona
5 0
3 years ago
Which statement is true about magnetic poles
Ahat [919]
A. all magnets have two poles

5 0
4 years ago
Read 2 more answers
When chlorobenzene reacts with Mg in ether followed by CO2 and neutralization with dilute HCl, __________ will be formed.
allsm [11]

Answer:

c. benzoic acid

Explanation:

The given reaction is an example of a Grignard reaction:

When chlorobenzene (C₆H₅Cl) reacts with Mg in ether, an intermediate is formed (C₆H₅MgCl).

Said intermediate then reacts with CO₂ producing a benzoic acid salt (C₆H₅CO₂X), this salt is then neutralized with dilute HCl producing benzoic acid (C₆H₅CO₂H).

4 0
3 years ago
An experiment requires 42.5 g of sulfuric acid, which is easier to measure by volume than by mass what voliume should be measure
kodGreya [7K]

<span>Using proportions, if x is the unknown volume we have: 
1.84 / 1 = 42.5 / x </span>

<span>
Multiply both sides above by x: 
1.84*x / 1 = 42.5
1.84*x = 42.5 
Divide both sides by 1.84: 
x = 42.5 / 1.84</span>

<span>X = 23.10 mL</span>

5 0
3 years ago
Read 2 more answers
You have an unknown gas. When a glowing splint is placed in it, the splint goes out. Which gas (oxygen, carbon dioxide, or hydro
maksim [4K]

Hydrogen

Hydrogen is identified by the glowing splint described in the question.

3 0
4 years ago
Other questions:
  • What are some subdivisions of earth science
    7·1 answer
  • Wind in the atmosphere and currents in the ocean are caused by uneven heating that produces _____.
    10·2 answers
  • Using the periodic table, explain the difference between hydrogen, deuterium, and tritium - i.e. hydrogen-1, hydrogen-2, and hyd
    8·1 answer
  • What is the symbol, atomic number, atomic mass, # of protons, # of neutrons, # of electrons, ion charge for the beryllium ion?
    8·1 answer
  • Peptides can be separated using an ion‑exchange column based on their isoelectric (pI) values. At which pH values would two diff
    11·1 answer
  • 3. What causes the plates to be pulled apart?<br> PLEASE HELP
    7·2 answers
  • Which of the following is a true statement?
    13·1 answer
  • You have 56.8 mL of a gas collected at 664 mmHg and 135 K. What volume will it occupy at 632 mmHg and 196 K? *
    12·1 answer
  • Which of the following are common decomposers? (Select all that apply) fungi, ferns, bacteria, viruses, grasses​
    13·2 answers
  • Based on the activity series provided, which reactants will form products? F &gt; Cl &gt; Br &gt; I CuI2 + Br2 Right arrow. Cl2
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!