Answer:
The speed of sound in hydrogen gas is 361.5 
Explanation:
It is given that the temperature is 50 .
The speed of sound in meter per second is calculated by an equation.
The equation states that speed of the sound in meter per second is equal to the sum of the product of the temperature in degree celsius with 0.60 and a constant that is 331.5.
The equation is written as:
Put the value of T = 50 then the equation becomes,
Speed of sound (in m/s) = 361.5 m/s
Physical properties help identifying a substance and how it changes.
For example: if a substance crushes easily that means it has a low density, but if it’s hard and doesn’t crush easily, that means it has a strong high density.
And eventually the substance would not end up forming a new substance.
Look at the picture below to understand more about physical changes.
C6h12o6 is the chemical formila for monosaccarides
City
<u>Explanation:</u>
The best analogy to explain the functions performed by a cell is by comparing it to a city.
Just like the city performs a multitude of task by housing critical elements like powerhouse, restaurants, transportation else, same way cell to performs similar functions for the body.
E.g.
- In cell “Mitochondria” provides it with energy or the power in the same way “powerhouse” provides power to the city
- Golgi bodies work as a car for transporting proteins to other parts of the cell.
