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
Bumek [7]
3 years ago
10

7.02 x 10^23 molecules of X2, a ssubstance consisting of diatomic molecules, has a mass of 296 grams. Determine the atomic weigh

t (mass of a mole of atoms) of element X.
a. 254 g/mol.
b. 296 g/mol.
c. 148 g/mol.
d. 127 g/mol.
e. 507 g/mol.
Chemistry
1 answer:
Fiesta28 [93]3 years ago
4 0

Answer:

d. 127 g/mol.

Explanation:

Hello!

In this case, since we have the amount of molecules of this this compound, we are able to compute the moles out there by using the Avogadro's number:

mol=7.02x10^{23}molec*\frac{1mol}{6.022x10^{23}molec}=1.17mol

Which correspond to the moles of X2. Then, by using the mass we are able to compute the molar mass of X2:

MM=\frac{296g}{1.17mol}\\\\MM=254g/mol

It means that the atomic mass of X halves the molar mass of X2, which is then d. 127 g/mol.

Best regards!

You might be interested in
Will give Brainliest If Correct!
Debora [2.8K]

Answer:

Slowly changing to be slightly more evenly distributed based on humanitarian efforts. Still unevenly distributed leaving millions starving to death.

Explanation:

3 0
3 years ago
List three different forms of potential energy
Wewaii [24]

Answer:

Types of Potential Energy

Elastic Potential Energy. Anything that can act like a spring or a rubber band can have elastic potential energy. ...

Gravitational Potential Energy. There is a constant attractive force between the Earth and everything surrounding it, due to gravity. ...

Chemical Potential Energy.

(IF THIS HELPED CAN YOU GIVE ME A BRAINYLEST PLEASE?)

3 0
3 years ago
How do i calculate the mass of CO2 emitted per Kj of heat produced in a combustion reaction?
Alexxandr [17]
 methanol:

1 mole CH3 OH --> produces --> 1 mole CO2 

1 mole CO2 has a molar mass of 44.01 gh/mole
 
your set up is:
(44.01 g CO2) / -726.5kJ = 0.06058g

your answer 0.06058 grams of CO2 produced per kJ released.
6 0
3 years ago
Could someone help pls ​
drek231 [11]
<h3>Solution-:</h3>

  • option D
  • maintains a constant volume.

#<em>o</em><em>f</em><em>f</em><em>i</em><em>c</em><em>a</em><em>i</em><em>l</em><em> </em><em>Nazo</em>

<em>ll </em><em>Radhe</em><em> Radhe</em><em> ll</em>

4 0
2 years ago
What is this equation balanced?
Brums [2.3K]
This equation is impossible. NaSO4 is non-existent. Did you mean Na2SO4?
4 0
3 years ago
Other questions:
  • A chemical reaction takes place inside a flask submerged in a water bath. The water bath contains of water at . During the react
    10·1 answer
  • How many sulfur atoms are there in 21.0 g of al2s3?
    11·1 answer
  • Describe the life of a damselfly
    10·2 answers
  • A 13.5g sample of gold is heated, then placed in a calorimeter containing 60g of water. The temperature of water increases from
    11·1 answer
  • What is the molality of a solution made up of 43.6 mol of CACI₂ dissolved in 13.5 kg of water? Please Show work
    8·1 answer
  • Label each of the components in the equation below what type of reaction
    5·1 answer
  • I need help pls Where does it belong to?​
    11·1 answer
  • The weight of an object _____.
    10·1 answer
  • PLEASE HELP DECODE THIS
    7·1 answer
  • What is reason for changing season of the earth ​
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!