A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 one year ago
The 64.8g sample of the compound X2O5 contains 48.0 g of oxygen atoms. What is the molar mass of element X?
anonymous
 one year ago
The 64.8g sample of the compound X2O5 contains 48.0 g of oxygen atoms. What is the molar mass of element X?

This Question is Closed

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i don't know i tried 5 times & continue to get the wrong answer

Rushwr
 one year ago
Best ResponseYou've already chosen the best response.2Mass of X2 = 64.8g  48g right?

Rushwr
 one year ago
Best ResponseYou've already chosen the best response.2So the mass of X2 is 16.8g

Rushwr
 one year ago
Best ResponseYou've already chosen the best response.2Now we have to find the moles of oxygen

Rushwr
 one year ago
Best ResponseYou've already chosen the best response.2\[moles = \frac{ mass }{ molar mass} = \frac{ 48 }{ 16 } = 3moles\]

Rushwr
 one year ago
Best ResponseYou've already chosen the best response.2\[\frac{ 2 }{ 5 } = \frac{ xmoles }{ 3 }\] \[x moles = 1.2\] Now we know the moles of X2

Rushwr
 one year ago
Best ResponseYou've already chosen the best response.2we know the moles and the mass we just have to find the molar mass by using molar mass = mass/moles

Rushwr
 one year ago
Best ResponseYou've already chosen the best response.2\[molar mass = \frac{ 16.8 }{ 1.2 } = 14gmol ^{1}\]

Rushwr
 one year ago
Best ResponseYou've already chosen the best response.2Welcome !!!!!!!!! DId u get it ? :)
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.