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 View Comments

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

knowledge is the backbone of society’s progress.

Life-changing knowledge does typically require advanced learning techniques. In fact, it’s been said that the average adult only uses 10% of his/her brain. Imagine what we may be capable of with more advanced learning techniques.

Sai Vishal Reddy

0 0

The importance of memory

Learning is a continuous process. What we learnt yesterday helps in understanding what we learn today. It is memory that helps one retain yesterday's learning. Therefore it is important that one uses...

Vibrant Verbal Academy

0 0

Basic Points

1. Orthocentre: Point of intersection of the three altitude of the triangle is called the orthocentre of the triangle. 2. Centroid: Point of intersection of the three median of the triangle is called...

Rahul G.

0 0

How to Calculate Cube Root of a Number

cube root Definition: This describes a "long hand" or manual method of calculating or extracting cube roots. Calculation of a cube root by hand is similar to long-hand division or manual square root. Suppose...

Sudhansu Bhushan Roy

0 0

Essay on Denominations in India

Denominations "A surgical strike against Corruption" On the evening of 8th November 2016, Prime Minister Narendra Modi made an unprecedented speech on national television stating all currency notes of...

Sudhansu Bhushan Roy

0 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 are anions?

7 Answers

How can I get students for online tuitions?

10 Answers

Write all the possible 3-digit numbers using 1, 6, and 4 and arrange them in the ascending order.

12 Answers

What is heat & its S.I. units ?

11 Answers

I teach 6 to 10 standard students mathematics and science in Delhi pitampura interested students may contact me

8 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

Migrate

Class

Subject

Chapter

Migrate to

Concept Solution

Migration Successful

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.