1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Nutka1998 [239]
2 years ago
7

40.0 g of ice cubes at 0.0°C are combined with 150. g of liquid water at 20.0°C in a coffee cup calorimeter. Calculate the final

temperature reached, assuming no heat loss or gain from the surroundings. (Data: specific heat capacity of H2O(l), c = 4.18 J/g×°C; H2O(s) => H2O(l) DH = 6.02 kJ/mol)Calculate the final temperature reached, assuming no heat loss or gain from the surroundings. (Data: specific heat capacity of H2O(l), c = 4.18 J/g×°C; H2O(s) => H2O(l) DH = 6.02 kJ/mol)
Chemistry
1 answer:
Stells [14]2 years ago
8 0

The final temperature of the mixture in the coffee cup calorimeter is; 19.467 °C

According to the law of energy conservation:

As such; the heat transfer in the liquid water is equal to heat gained by the ice

Heat transfer by liquid water is therefore;

  • <em>DH = m × c × DT</em>

  • DH = 6.02 kJ/mol) = 150 × 4.18 × (T1 - T2)

  • 6020 J/mol = 627 × (20 - T2)

However, since 18g of water makes one mole

  • 6020 J/mol = 6020/18 = 334.44 J/g.

  • 334.44 = 627 × (20 - T2)

  • 0.533 = (20 - T2)

  • T2 = 20 - 0.533

T2 = 19.467°C

Read more on heat:

brainly.com/question/21406849

You might be interested in
Help plz this was due 2 days ago but I don’t understand it at all
Bumek [7]

Answer:

4 mile : 253440 inches

0.004 grams : 1.814 grams

56 miles/hour : 82.133 feet per second

4.5 ml : 0.45 centilitre

34.g/ml : 74.9571691 lb/liter

30 lb: 480 ounces

8 0
3 years ago
Read 2 more answers
What is the valency ?write the valencies of the calcium, Iron, hydroxyh​ ,Nitrate
Natasha_Volkova [10]

Answer:

(a):Valency is the measure of the capacity of an atom of a single element to react and combine with particular numbers of atoms of another element.

(b):

Valency of calcium:+2

Valency of Iron:Iron exhibits 2 valence states of +2 and +3.

Valency of hydroxl:-1

Valency of Nitrate:-1

Explanation:

3 0
3 years ago
A student decides to jump off a skateboard toward the east. Based on the action-reaction forces, which direction will the skateb
Anna11 [10]

Answer:

l

Explanation:

5 0
3 years ago
3% Hydrogen Peroxide has an oral LD50 of 900 mg/kg. Acetic Acid has an oral LD50 of 3310 mg/kg. Which one is more hazardous to c
Maurinko [17]
LD50 is defined as the lethal dose 50% which describes the amount of material required to kill 50% of the testing population. It is given in units of mg of chemical per kg of bodyweight of the recipient. 

Comparing hydrogen peroxide and acetic acid, we see that peroxide has a lower LD50 of 900 mg/kg, with acetic acid having LD50 = 3310 mg/kg. When comparing LD50 values, the smaller value will be the more toxic compound. What this means is that in this case, a smaller amount of peroxide is required to kill 50% of the testing population compared to acetic acid.

Therefore, 3% hydrogen peroxide is more hazardous to consume.
7 0
3 years ago
What are transitional elements in chemistry?
GuDViN [60]
They are the elements from scandium to copernicium. The elements between group 2 and group 3
8 0
3 years ago
Read 2 more answers
Other questions:
  • Which diagram best illustrates the stage in the formation of the solar system at which the sun formed?​
    13·1 answer
  • Why are covalent bonds between hydrogen and nitrogen or oxygen polar? see section 2.1 ( page 57) ?
    9·1 answer
  • What are the two different ions present in the compound NH4NO3?
    12·1 answer
  • If a solution containing 80.701 g80.701 g of mercury(II) perchlorate is allowed to react completely with a solution containing 1
    5·1 answer
  • what happened to the color of the sand when it goes through filtration and is quantitative or qualitative
    6·1 answer
  • A sample of Xe takes 75 seconds to effuse out of a container. An unknown gas takes 37 seconds to effuse out of the identical con
    6·2 answers
  • Which of the following elements is most metallic?
    8·1 answer
  • Which of the following is NOT needed for photosynthesis to take place?
    8·2 answers
  • What is the emf produced in a 1.5 meter wire moving at a speed of 6.2 meters/second perpendicular to a magnetic field of strengt
    15·1 answer
  • Calcium Oxide at mass 14.0g react with water. Determine the mass at which the calcium hydroxide formed. [ Ca=40, O=16, H=1]​
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!