Which of the following is a valid unit for specific heat?
2 answers:
Answer: Option (d) is the correct answer.
Explanation:
When a substance is heated and the heat used to raise its temperature by a unit mass of the given amount is known as specific heat of the substance.
Mathematically,
where Q = heat added in calories or joules
m = mass of substance in grams or kg
C = specific heat
= change in temperature
Thus,
Hence, we can conclude that a valid unit for specific heat is ca.
You might be interested in
Answer:
<h3>The answer is 1.99 g/mL</h3>Explanation:
The density of a substance can be found by using the formula
From the question
mass = 16.93 g
volume = final volume of water - initial volume of water
volume = 19.7 - 11.2 = 8.5 mL
We have
We have the final answer as
<h3>1.99 g/mL</h3>Hope this helps you
Answer:
0.808 M
Explanation:
Using Raoult's Law
where:
= vapor pressure of sea water( solution) = 23.09 mmHg
= vapor pressure of pure water (solute) = 23.76 mmHg
= mole fraction of water
∴
------ equation (1)
------ equation (2)
where; number of moles of sea water
number of moles of pure water
equating above equation 1 and 2; we have :
NOW, Molarity =
As we assume that the sea water contains only NaCl, if NaCl dissociates to Na⁺ and Cl⁻; we have