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
guapka [62]
3 years ago
14

How many atoms are in 3.5 moles of He?

Chemistry
1 answer:
Volgvan3 years ago
4 0

Answer:

The answer is 2.107 × 10²⁴ He atoms

Explanation:

To find the number of atoms given the number moles we use the formula

<h3>N = n × L</h3>

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

We have

N = 3.5 × 6.02 × 10²³

We have the final answer as

<h3>2.107 × 10²⁴ He atoms</h3>

Hope this helps you

You might be interested in
In the lab there is a vile of mercury and it has a mass of 43.0 grams. If the density of mercury is 13.6 g/mL, what is the volum
Vitek1552 [10]

Answer:

<h2>The answer is 3.16 mL</h2>

Explanation:

The volume of a substance when given the density and mass can be found by using the formula

volume =  \frac{mass}{density}

From the question

mass = 43 g

density = 13.6 g/mL

The volume is

volume =  \frac{43}{13.6}  \\   = 3.161764

We have the final answer as

<h3>3.16 mL</h3>

Hope this helps you

8 0
3 years ago
8. Which one of these does not describe a Mineral?
Yakvenalex [24]

Answer:

solid

Explanation:

5 0
3 years ago
Which statements accurately describe volcanic landforms? Check all that apply
VashaNatasha [74]

Answer:

A. Batholiths cooled deep inside Earth.

B. A geyser spouts water that is heated deep inside Earth.

Explanation:

8 1
3 years ago
Read 2 more answers
What is the octet rule
BlackZzzverrR [31]
The octet rule is that atoms must have 8 valence electrons to have an octet. Usually, when atoms have an octet, they tend not to bond with any other atoms because they are already stable and do not need to bond anymore. 
8 0
3 years ago
Read 2 more answers
The chemical formula for strontium sulfite is SrSO3.<br><br><br> TRUE<br><br><br> FALSE
VLD [36.1K]
Valency is the number of electrons lost or gained by an atom to attain an stable configuration. Valency is important when writing the formula of chemical compounds in chemistry. Strontium has a valency of  2 while sulfite ion (radicle) has a valency of 2. Therefore, the chemical formula of strontium sulfite is written as SrSO3.
3 0
3 years ago
Other questions:
  • Is it possible for a molecule only made up of hydrogen and carbon to be polar?
    6·1 answer
  • How much energy is needed to melt 47.6g of water
    13·1 answer
  • What does a process require to be spontaneous at all temperatures? Answer a catalyst and lower activation energy positive enthal
    13·2 answers
  • If 0.750 L of argon at 1.50 atm and 177°C and 0.235 L of sulfur dioxide at 713 torr and 63.0°C are added to a 1.00-L flask and t
    15·1 answer
  • For the balanced equation shown below, if the reaction of 0.112 grams of
    6·1 answer
  • Two difference between rhombic and monoclinic sulphur​
    7·1 answer
  • Which of the following solutions is the weakest base?
    8·1 answer
  • Calcium carbonate is often used as an antacid. Your stomach acid is composed of HCl at a pH of 1.5. If you ate toooo much Turkey
    9·1 answer
  • Which molecule among these is polar?
    10·1 answer
  • A 10 cm3 piece of aluminum has a higher density than a 5 cm3<br> of aluminum. True or false
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!