true

Take Class 8 Tuition from the Best Tutors

Affordable fees
1-1 or Group class
Flexible Timings
Verified Tutors

Search in

Atom and Molecular numerical Part 5

20/10/2016 0 0

Q. A 0.24 g sample of compound of oxygen and boron was found by analysis to contain 0.096 g of boron and 0.144 g of oxygen. Calculate the percentage composition of the compound by weight.

Ans:

Total mass of Compound = 0.24 g (Given)

Mass of boron = 0.096 g (Given)
Mass of oxygen = 0.144 g (Given)

Thus, percentage of boron by weight in the compound = 0.096 / 0.24 × 100%

= 40%

And, percentage of oxygen by weight in the compound = 0.144 / 0.24 × 100% = 60%

0 Like 0 Dislike

Follow 0

Other Lessons for You

amazing maths

259 x 39 x your age = your age written three times. how cool is this!!!! when you multiply 259 and 39, it becomes 10101. That is why when you multiply any number with 10101, you get your age written three times.

Nitish Thukral

0 0

PRACTISE makes you PERFECT ; ; ; There is no SUBSTITUTE for HARD WORK ;;;;Breathe SUCCESS like OXYGEN

Proper Planning ( reg what portions to be covered today) revising today's class portions & clarifying doubts solving Maths problems regularly ,noting down formulae separately trying to understand...

Kiruthika S.

1 0

Memorising Formulae

First understand the derivation of the formula. Summarise all the formulaes on a paper and carry it where ever you go in the pocket. You need not open and learn them. Just make sure you see them when ever you get sometime .

Varsha

0 0

Vedic Mathematics for Multiplication of two 2-digited numbers

Vedic Mathematics is a very powerful tool for us to get quick calculations For Multiplication of two 2-digited numbers, we can follow FOIL technique. If you want to multiply 74×36(let's present...

Naimish K.

0 0

स्वर संधि

दो स्वरों के मेल से होने वाले विकार (परिवर्तन) को स्वर-संधि कहते हैं। जैसे - विद्या + आलय = विद्यालय। स्वर-संधि छ: प्रकार की होती हैं - दीर्घ संधि गुण संधि वृद्धि संधि यण संधि अयादि संधि वृद्धि संधि

Arun

1 0

Find Class VIII near you

Online Tuition Class 8

Looking for Class 8 Tuition ?

Learn from Best Tutors on UrbanPro.

Are you a Tutor or Training Institute?

Join UrbanPro Today to find students near you

Class 8 Tuition Questions

What can be best remedy for negligent student, Absolutely Un-interested in studies and failed twice?

38 Answers

Surat was an important trading port on Bay of Bengal. Yes or No

140 Answers

In grammar define Gerund with example?

28 Answers

Which one is best for learning Spanish Instituto Cervantes (CP) or Instituto Hispania, Hauz Khas for...

8 Answers

1. Radiocarbon is produced in the atmosphere as a result of A. collision between fast neutrons and...

9 Answers

Looking for Class 8 Tuition Classes?

The best tutors for Class 8 Tuition Classes are on UrbanPro

Select the best Tutor
Book & Attend a Free Demo
Pay and start Learning

Take Class 8 Tuition with the Best Tutors

The best Tutors for Class 8 Tuition Classes are on UrbanPro

I am a Student I am a Tutor
Name*	Please enter your full name. Please enter institute name.
Email*	Please enter your email address.
Phone*	Please enter a valid phone number.
Location*	Please enter a pincode or area name.
City*	Please enter city name.
Category*	Please enter category.
Gender*	Male Female Please select your gender.
Email ID/ Mobile No.*	Please enter either mobile no. or email.
Enter Password*	Please enter OTP Please enter Password Sorry, this phone number is not verified, Please login with your email Id.