Advertisements
Advertisements
Question
The mass of an oxygen atom is 16.0 u. Express it in kg.
Advertisements
Solution
Given:
Mass of one atom of oxygen = 16 u
1 u = 1.66 × 10-27 kg
∴ The mass of an atom of oxygen
kg = 16 × 1.66 × 10-27
= 26.56 × 10-27
= 2.656 × 10-26 kg
APPEARS IN
RELATED QUESTIONS
Complete the following: 1 micron =………..Å
A boy makes a ruler with graduations in cm on it, (i.e. 100 divisions in 1 m). To what accuracy this ruler can measure? How can this accuracy be increased?
Name the three fundamental quantities.
Define standard meter.
Choose the correct one
Match the following:
| 1. | Length | 1. | ampere (A) |
| 2. | time | 2. | Kelvin (K) |
| 3. | Mass | 3. | meter (M) |
| 4. | Temperature | 4. | second (S) |
| 5. | Electric current | 5. | kilogram (K) |
The melting point of pure ice (0° C) is taken as ______ fixed point.
Define measurement.
Questions based on Higher Order Thinking Skills:
|
There are three spheres A, B, C as shown below. Sphere A and B are made of same material. Sphere C is made of a different material. Spheres A and C have equal radii. The radius of sphere B is half that of A. Density of A is double that of C. |
Now answer the following questions.
- Find the ratio of masses of spheres A and B.
- Find the ratio of volumes of spheres A and B.
- Find the ratio of masses of spheres A and C.
