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

Pythagorean Theorem

Pythagorean Theorem - If a and b are the lengths of the legs of a right triangle and c is the length of the hypotenuse, then the sum of the squares of the lengths of the legs is equal to the square of...

Mohammad Ismail Ansari

0 0

Numbers

Natural numbers N = {1, 2, 3, 4...........+∞} Integers Z = {-∞........,-3, -2, -1, 0, 1, 2, 3, 4..........+∞} Positive integers Z+ ={1, 2, 3, 4, ..........+∞} Negative integers...

Mohammad Alfateh

0 0

Worried about complex problem? look the same problem from different angle, it may look silly to you

Sometimes we come accross complex problems. There can be two reasons behind the complexity of the given problem 1. Problem is actually complex Or 2. Our state of mind is not allowing us to concentrate Let's...

Anuradha S.

0 0

Square Of a Number Ending In 5

Let's say we want to get the square of 35 i,e 35 x 35, Take the first no ie 3,take the next number i,e 4, Multiply 3 and 4 ie 3 x 4 = 12, Place 25 after 12, So, the answer is 1225, Lets try some more, 75...

Sachidananda R.

0 0

Application Of Trigonometry

Solve the triangle shown below: Solution: We need to find the lengths of all sides and the measures of all angles. In this triangle, two of the three sides are given. We can find the length...

Shuvham Singhal

1 0

Find Class VIII near you

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 is an inertial frame?

19 Answers

What is rhythmic rise and fall of water twice in a day is called?

14 Answers

What are the laws of exponents?

9 Answers

"निशान्धकारे" explain the sandhi ?

15 Answers

Nuclear sizes are expressed in a unit named A. Fermi B. angstrom C. newton D. tesla

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.