dxris5612 dxris5612
  • 24-02-2021
  • Chemistry
contestada

A 44g sample of liquid water at 18C ends up as ice -14C. How much energy is involved in this change?

Respuesta :

Muscardinus Muscardinus
  • 25-02-2021

Answer:

Q = -5913.6 J

Explanation:

Given that,

Mass of the sample, m = 44 g = 0.044 kg

Initial temperature = 18°C

Final temperature = -14°C

We need to find the energy involved in this change. The energy involved in this process is given by :

[tex]Q=mc\Delta T[/tex]

c is specific heat of water

[tex]Q=0.044\times 4200\times (-14-18)\\\\Q=-5913.6\ J[/tex]

So, 5913.6 J of energy is involved in this change.

Answer Link

Otras preguntas

estimate the product by rounding 2×6,254
Which of the following are important products of rainforests? a. timber b. pharmaceuticals c. oxygen d. all of the above
If x =2 and y =6, what is 2x (23 - 3y)?
A farmer is splitting 23 pounds of oats into 9 separate bins for his horses how many pounds of oats will be in each bin? Also it has to be a mixed fraction.
Nicholas spends 20 minutes iron shirts with his 1800 watt iron how many joules of energy were used by the iron
How did major strikes prevent large industrial unions from maintaining power and influence
which strategy would you use to find 2+8 explain how do you decided
Which of the following is equal to 4 kilograms? A. 4,000 g B. 4,000 mg C. 40 g D. 4,000 cg
. Find four different commands in Internet Explorer and identify their keyboard shortcuts. A. B. C. D.
What is the etymology of homophone? from French omnu from Latin homus from Greek homo from Spanish homo