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
makvit [3.9K]
3 years ago
14

11. Calculate the amount of heat transferred when 550 grams of water cools from an initial temperature of

Chemistry
1 answer:
Reptile [31]3 years ago
3 0

Answer:

–48.3 KJ

Explanation:

Data obtained from the question. This includes the following:

Mass (M) = 550g

Initial temperature (T1) = 25°C

Final temperature (T2) = 4°C

Change in temperature (ΔT) = T2 – T1 = 4°C – 25°C = –21°C

Specific heat capacity (C) = 4.184J/g°C

Heat (Q) =.?

The heat transferred can be obtained as follow:

Q = MCΔT

Q = 550 x 4.184 x –21

Q = – 48325.2 J = –48.3KJ

Therefore, the heat transferred is –48.3KJ since we are cooling the water.

You might be interested in
Help with calculating bond energies.
aleksandr82 [10.1K]
<span>You must multiply the bond enthalpy by each broken or formed bond.
The C - H bond = 414k Joules/ mol, but that is only applicable per bond.
The C3H8 molecule has 8*C-H bonds that have to break. You have to account all the bonds that break and form to get the DH for the reaction.
Because of the Lewis structure of Propane C3h8 you only use 8 in </span><span>c3h8 has 3-C and 8-C.</span>
7 0
3 years ago
Determine the mass in grams of 2.98 × 10²¹ atoms of arsenc. Determine the mass in grams of 2.98 × 10²¹ atoms of arsenc.
trapecia [35]

Answer:

37.1 g of Arsenic

Explanation:

2.98 x 10^21 atoms of Arsenic x 74.92g/6.02 x 10^23

= 223.26 x 10^21/6.02 x 10^23

= 2.2326 x 10^23/6.02 x 10^23

= 37.1 g of Arsenic

4 0
4 years ago
Which of these equations is balanced?
nikitadnepr [17]

Answer:

the first is the answer

4 0
3 years ago
Marian claims that Food A has slightly more than three times the Calories as Food B. Johan claims that Food B has more Calories.
Liula [17]

Explanation:

In order to justify Marian's statement we have to look at the '' Amount per serving calories'' ⇒

In food label A we can see that this value is 160 calories

In food label B we can see that this value is 50 calories

⇒ 160 calories is slightly more than three times 50 calories

Otherwise If we want to justify Johan statement we need to look at the '' serving size '' ⇒

In food label A we can see that the serving size is 1 cup (237 mL)

In food label B we can see that the serving size is \frac{1}{4} cup (56g)

Working with the information of the food label A we can write the following expression :

\frac{1Cup}{160calories}=\frac{\frac{1}{4}Cup}{x}  ⇒ Looking at the value of ''x'' ⇒

x=160calories(\frac{1}{4})=40calories

x=40calories

If we look at the same amount of portion volume :

In \frac{1}{4} cup of food A we have 40 calories

In \frac{1}{4} cup of food B we have 50 calories

We could conclude that Food B has more calories.

That's how both claims could both be justified.

8 0
4 years ago
NEED HELP! FAST! WILL CHOOSE BRAINLIEST ANSWER!
Jobisdone [24]
Mechanical waves need mediums. or else it isn't a mechanical wave
6 0
3 years ago
Other questions:
  • A galvanic cell is made up of solid In in 0.10 M In(NO3 )3 and solid Zn in 0.0050 M Zn(NO3 )2. The measured cell potential for t
    15·1 answer
  • How many MOLES of boron tribromide are present in 3.20 grams of this compound ?
    11·1 answer
  • What is the concentration of ammonia in a solution made by dissolving 3.75 g of ammonia in 120.0 l of water?
    13·2 answers
  • A substance that donates hydrogen ions is a _________.
    6·1 answer
  • Name 2 properties of enzymes
    8·2 answers
  • What are the five main points of kinetic theory of gas?​
    14·2 answers
  • Question in picture plsss help
    12·1 answer
  • If the diameters of every planet in our solar system are added together, would the sum be greater than or less than the diameter
    5·1 answer
  • 4. A,B,AB or O. <br><br><br> 5. A,B,AB or O<br><br><br> 6. A,B,AB or O
    7·1 answer
  • If the equation: FeCl3+O2--&gt;Fe2O3+Cl2, how many moles of chlorine gas can be produced if 4 moles of FeCl3 react with 4 moles
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!