Answers posted by Ayesha Akter

for me "fan".

For me Real world.

There are several ways to earn money in online.

7.753 billion (2020).

The Sun belongs to a galaxy called the Milky Way. Astronomers estimate there are about 100 thousand ...

September 2016.

in 1926, Bologna, Italy.

Hydrogen was discovered by the English physicist Henry Cavendish in 1766. Scientists had been produc...

Sample preparation. Human urine is composed primarily of water (95%). The rest is urea (2%), creatin...

The dihydrogen monoxide parody involves calling water by an unfamiliar chemical name, most often &qu...

It is 1.00784 u.

The air in Earth's atmosphere is made up of approximately 78 percent nitrogen and 21 percent oxygen....

The total mass of ozone in the atmosphere is about 3 billion metric tons. That may seem like a lot, ...

It's a mixture of different gases. The air in Earth's atmosphere is made up of approximately 78 perc...

It is 35.45u.

It is 14.007u.

Mass of O2 molecule = 2 × 16 = 32 amu. ⇒ 5.31 × 10-23g.

The Florin was a coin worth two Shillings, it was also sometimes known as a "two bob bit"....

Nitrogen is the seventh element with a total of 7 electrons.

Oxygen has: Atomic number (which is always the smaller of the two numbers) is 8. Hence 8 protons. Be...

Fluorine atoms have nine electrons, one fewer than neon, and electron configuration 1s22s22p5: two e...

Hydrogen has one one proton and one electron; the most common isotope, protium (1H), has no neutrons...

1.989 × 10^30 kg

5.683 × 10^26 kg

1.898 × 10^27 kg