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
abruzzese [7]
3 years ago
5

How many 20.0-g ice cubes are required to absorb 47.0 kJ from a glass of water upon melting?

Chemistry
1 answer:
Sati [7]3 years ago
3 0

Hello!


The number of 20-g ice cubes required to absorb 47 kJ from a glass of water upon melting is 7 icecubes


Why?


We are going to clear from the equation of the released heat, the mass of ice (m). The specific latent heat of fusion of ice is 336 kJ/kg:


Q=m*L\\ \\ m=\frac{Q}{L}=\frac{47 kJ}{336 kJ/kg}=0,1399 kg=139,88 g\\   \\ 139,88g*\frac{1 icecube}{20g}=6,99=7icecubes


So, 7 ice cubes are required to absorb that amount of heat from the glass of water.


Have a nice day!

You might be interested in
5) Calculate the volume, in liters, of 3.24 x 1022 molecules<br> CI2
azamat

Answer: 1.12 Liters

Explanation:

According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number 6.023\times 10^{23} of particles.

To calculate the moles, we use the equation:

\text{Number of moles}=\frac{\text{Given molecules}}{\text {avogadro's number}}=\frac{3.24\times 10^{22}}{6.023\times 10^{23}}=0.05moles

1 mol of Cl_2 occupy = 22.4 L

Thus 0.05 mol of Cl_2 will occupy = \frac{22.4}{1}\times 0.05=1.12 L

5 0
3 years ago
8. How much enthalpy/heat is transferred when 0.5113
Gennadij [26K]
First convert to moles:
0.5113 g / 17 g/mol = 0.0301 mol

Now create a ratio based on the reaction provided to solve for the unknown:

4 NH3 / -905.4 kJ = 0.0301 mol NH3 / x kJ
x = -6.808 kJ
8 0
3 years ago
The chemical equation for the formation of ammonia is unbalanced.
ratelena [41]
Balance Chemical equation is as follow,

<span>                           3 H</span>₂ <span>(g) + N</span>₂ <span>(g)    </span>→<span>    2 NH</span>₃ <span>(g)

According to balanced equation, 3 Molecules (3 moles) of Hydrogen reacts with 1 Molecule of N</span>₂ to produce 2 moles (2 Molecules) of NH₃.

Result:
          2 Molecules of Ammonia are produced by reacting 3 molecules of Hydrogen and 1 molecule of Nitrogen.
7 0
3 years ago
Use the IUPAC nomenclature rules to give the name for this compound - CrPO4.
MrRissso [65]

Answer:

i need help

Explanation:

7 0
2 years ago
1.00176 x 103<br> Scientific notation
Ber [7]

Answer:

1.0318128 × 10^2

Explanation:

7 0
2 years ago
Other questions:
  • What is copper sulfate?
    13·1 answer
  • The conjugate base of H2CO3 is ___________
    10·2 answers
  • Why is Darwins theory of evolution by natural selection not just a theory
    13·1 answer
  • Someone please help will mark as brainliest
    15·1 answer
  • Which equation shows the correct relationship between mass, force, and acceleration?
    7·1 answer
  • How many kilojoules of heat energy are absorbed when 98.5 g of water are heated from 24.5 oC to 48.8 oC?
    10·1 answer
  • Why does a chemical equation be balanced?
    9·1 answer
  • 1. How many metals, nonmetals and metalloids are there in the periodic table?
    11·1 answer
  • Difference between saturated unsaturted and supersaturatted
    7·1 answer
  • Context givin in picture
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!