Answer:
ATOMIC number of element A is 3
Explanation:
Atomic number is the same as number of protons of an element.
according to the periodic table, Lithium is the element with 3 protons in its neutral state and it's atomic number is 3.
Andrea and the other members of the tennis team are practicing hitting tennis balls. If two people hit identical balls at the sa
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Answer : The energy required to heat of 1.50 kg iron is,
Explanation :
Formula used :
or,
where,
Q = heat required = ?
m = mass of iron = 1.50 kg = 1500 g
c = specific heat of iron =
= initial temperature =
= final temperature =
Now put all the given value in the above formula, we get:
Therefore, the energy required to heat of 1.50 kg iron is,