The 2 main waves is body waves & surface waves & Scientists<span> use waves to </span>study<span> the different </span>layers of the earth. Usually, they are <span>to determine the depths of layers. Geologists </span>use<span> these records to establish the structure of </span>Earth's interior<span>.</span>
Number of moles = 3.2 moles
Volume = 0.98 L
Therefore:
M = n / V
M = 3.2 / 0.98 => 3.3 M
Answer D
Answer : The amount of heat absorbed are, 258485.5 J
Solution :
Formula used :
where,
Q = heat gained = ?
m = mass of water = 650 g
c = specific heat of water =
= final temperature =
= initial temperature =
Now put all the given values in the above formula, we get the final temperature of copper.
Therefore, the amount of heat absorbed are, 258485.5 J
I think that it is half are required to react with 40 g of HF.