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
fenix001 [56]
3 years ago
5

What is the density of helium

Chemistry
2 answers:
Contact [7]3 years ago
8 0
The density of helium is 10 ^-3g.cm^-3
ollegr [7]3 years ago
6 0

Answer:

The density of helium..........

You might be interested in
A tank of oxygen has a volume of 1650 L. The temperature of the gas inside is 35?C. If there are 9750 moles of oxygen in the tan
Paul [167]

Answer:

2192.64 PSI.

Explanation:

  • From the general law of ideal gases:

<em>PV = nRT.</em>

where, P is the pressure of the gas in atm.

V is the volume of the container in L (V = 1650 L).

n is the no. of moles of the gas in mol (n = 9750 mol).

R is the general gas constant (R = 0.082 L.atm/mol.K).

T is the temperature of the gas in (T = 35°C + 273 = 308 K).

∴ P = nRT/V = (9750 mol)(0.082 L.atm/mol.K)(308 K)/(1650 L) = 149.2 atm.

  • <u><em>To convert from atm to PSI:</em></u>

1 atm = 14.696 PSI.

<em>∴ P = 149.2 atm x (14.696 PSI/1.0 atm) = 2192.64 PSI.</em>

4 0
3 years ago
Hello..................<br><br>.....​
VashaNatasha [74]

Hello.....

Have a beautiful and joyful day ahead.

3 0
2 years ago
How many atoms are there in 24 moles of Fe?
Semenov [28]

Answer: There are 145 \times 10^{23} atoms in 24 moles of Fe.

Explanation:

According to the mole concept, 1 mole of a substance contains 6.022 \times 10^{23} atoms.

Therefore, atoms present in 24 moles of Fe are calculated as follows.

24 mol \times 6.022 \times 10^{23} atoms/mol\\= 144.52 \times 10^{23} atoms\\or,  145 \times 10^{23} atoms

Thus, we can conclude that there are 145 \times 10^{23} atoms in 24 moles of Fe.

8 0
3 years ago
What is chemsity and what does it have to do with science
MatroZZZ [7]
Chemistry is the study of the composition of matter and the ways in which matter interacts, combines, and changes under certain conditions.  Although not as fundamental as physics, chemistry is a very basic and broad science.  It helps us explain bodily interactions and natural process (biochemistry), it helps us to manufacture new medications, and true chemistry research will always follow the scientific method.
4 0
3 years ago
Simple question plzz help
PSYCHO15rus [73]

Answer:

a  

Explanation:

3 0
3 years ago
Read 2 more answers
Other questions:
  • Which of the following shows the balanced equation for the reaction that represents the decomposition of barium carbonate (BaCO3
    9·2 answers
  • For science i had to create a super hero from an element. i got beryllium.
    9·1 answer
  • How many phase rule variables must be specified to fix the thermodynamic state of each of the following systems? Show how you de
    15·1 answer
  • Energy does not have to involve motion.<br> Question 8 options:<br> True<br> False
    8·1 answer
  • A 2.0 L flexible container holds 5.0 moles of oxygen (O2) gas. An additional 15.0 moles of nitrogen gas (N2) is added to the con
    13·2 answers
  • What is space biology?? <br>​
    13·1 answer
  • A chemical bond formed when two atoms share three pairs of electrons is a ________ bond; it is best described as ________.
    12·1 answer
  • What is an example of an initiation phase for an addition
    9·1 answer
  • All living organisms are made out of cells. Select three cell parts that all cells contain.
    13·1 answer
  • What does it mean to be in the path of totality?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!