Answer:
315.
Explanation:
Hello.
In this case, since the given number has five significant figures as the zero is to the right of the first nonzero digit (3), if it is required to report it with three significant figures, it is necessary to "cut" it at the first five without any rounding since the subsequent zero is less than five.
Thus the number turns out:
315
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Answer:
When the person poured water into it, slowly and steadily that quantity of water also got into the bucket and it occupied some amount of space inside. In this case, there will not be any change of shape in the rock when it is inside, as compared to what it was when it was outside.
Explanation:
All Elements are obtained in the periodic table & water is Not an element it is a compound.
Answer: Physical change: It is reversible process and we can get back to orginal material. Best example is the interconversion of ice into water which inturn into vapour.
Chemical changes are irreversible and we can't get back the original material. Example combustion of coal, rusting of iron
Explanation:
1. Electrolysis of molten MgCl2 is chemical change since we can't get back MgCl2 after Electrolysis and new materials are formed.
2. It is an example rusting of iron comes under chemical changes.
The lightbulb, the fire, and the Sun all create light from some energy source.
The Moon doesn't create light. The parts of it that the Sun shines on
are visible, the parts of it that the Sun doesn't shine on are not visible.
Just like a rock on the ground at night, the Moon must be illuminated
by a flashlight in order to be seen. The Sun is the flashlight.