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
tatyana61 [14]
3 years ago
14

How much heat is given off when you freeze 95.7 g of water?

Chemistry
2 answers:
vazorg [7]3 years ago
7 0

Answer:

Hey kimalonzo59!

· Calculate specific heat as c = Q / (mΔT). In our example, it will be equal to c = -63,000 J / (5 kg * -3 K) = 4,200 J/ (kg·K). This is the typical heat capacity of water.

<em>I hope this Helps, Have an Awesome Day!</em>

<em>~ Chloe Marcus ❤</em>

forsale [732]3 years ago
6 0

im not too sure but the answer above helps a lot

You might be interested in
EASY How does the force of friction affect the motion of objects?
QveST [7]

Answer:

It causes the object to slow down or stop.

Explanation:

Friction is a unknown force pressing against another force slightly, making the moving object slow down.

8 0
3 years ago
Read 2 more answers
What fraction of a Sr-90 sample remains unchanged after 87.3 years
jolli1 [7]
The answer is 1/8.

Half-life is the time required for the amount of a sample to half its value.
To calculate this, we will use the following formulas:
1. (1/2)^{n} = x,
where:
<span>n - a number of half-lives
</span>x - a remained fraction of a sample

2. t_{1/2} = \frac{t}{n}
where:
<span>t_{1/2} - half-life
</span>t - <span>total time elapsed
</span><span>n - a number of half-lives
</span>
The half-life of Sr-90 is 28.8 years.
So, we know:
t = 87.3 years
<span>t_{1/2} = 28.8 years

We need:
n = ?
x = ?
</span>
We could first use the second equation, to calculate n:
<span>If:
t_{1/2} = \frac{t}{n},
</span>Then: 
n = \frac{t}{ t_{1/2} }
⇒ n = \frac{87.3 years}{28.8 years}
⇒ n=3.03
<span>⇒ n ≈ 3
</span>
Now we can use the first equation to calculate the remained amount of the sample.
<span>(1/2)^{n} = x
</span>⇒ x=(1/2)^3
⇒x= \frac{1}{8}<span>
</span>
8 0
4 years ago
Who discovered copper and in what year?
Vesnalui [34]
8,700 B.C.
 No clue who discovered it.
4 0
3 years ago
Read 2 more answers
What is the Molarity of a solution that has .06 moles of NaF and .375 L?
Feliz [49]

Answer:

0.16 M

Explanation:

Molarity = moles/litres

= 0.06 moles/0.375 litres

= 0.16 M

3 0
3 years ago
Using the equation, C5H12 + 8O2 Imported Asset 5CO2 + 6H2O, if 2 moles of pentane (C5H12) were supplied, and an unlimited amount
Kamila [148]

12 moles of water H₂O are produced from the combustion of pentane.

Explanation:

We have the following combustion of pentane (C₅H₁₂):

C₅H₁₂ + 8 O₂ → 5 CO₂ + 6 H₂O

Knowing the chemical reaction we devise the following reasoning:

if         1 moles of pentane C₅H₁₂ produces 6 moles of water H₂O

then    2 moles of pentane C₅H₁₂ produces X moles of water H₂O

X = (2 × 6) / 1 = 12 moles of water H₂O

Learn more about:

combustion of organic compounds

brainly.com/question/7295137

brainly.com/question/884053

#learnwithBrainly

7 0
3 years ago
Other questions:
  • Why did the president say the humans need to stay in space wall-e
    15·1 answer
  • For the oxidation–reduction reaction equation 2na+s ⟶ na2s indicate how many electrons are transferred in the formation of one f
    13·1 answer
  • This figure (Figure 1)shows a container that is sealed at the top
    5·1 answer
  • Explain how molar mass relates the mass of an atom to mass and moles of the atom
    5·1 answer
  • Which of the following is true for the equilibrium constant of a reaction? Its value remains constant at different temperatures.
    11·1 answer
  • An atom of which element has the strongest attraction for electrons in a chemical bond?
    8·1 answer
  • Which of the following heat transfer methods is when heat is transferred through fluids, such as air?
    14·1 answer
  • 6.An ice cube that has a mass of 20 g is in a sealed container. As the container is heated, the ice first melts, but eventually
    6·1 answer
  • 5.00 g of solid silver nitrate AgNO3 is added to 100ml of deionized H2O to make a substance that can test the presence of chlori
    9·1 answer
  • The table compares some characteristics of two atoms.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!