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
Lisa [10]
3 years ago
9

4. What is the total mass of ice that can be vaporized by 2100 kJ of heat energy?

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

Answer:

5 g

Explanation:

The heat required to vaporize ice is the sum of

i) Heat required to melt ice at 0°C

ii) Heat required to raise the temperature from  0°C to 100°C

iii) Heat required to vaporize water at 100°C

Thus;

H = nLfus + ncθ + nLvap

H= n(Lfus + cθ + Lvap)

Lfus = 6.01 kJ/mol

Lvap = 41 kJ/mol

c = 75.38

n =?

2100 = n(6.01  + 75.38(100) + 41)

n = 2100 KJ/7585.01 kJ/mol

n = 0.277 moles

Mass of water = number of moles * molar mass

Mass of water = 0.277 moles * 18 g/mol

Mass of water =  5 g

You might be interested in
Which statement is true about BF3, a nonpolar molecule? It has nonpolar bonds and a symmetrical structure. It has nonpolar bonds
konstantin123 [22]
I think the correct answer is the first option. It has nonpolar bonds and a symmetrical structure. The structure of a BF3 molecule shows a symmetrical trigonal geometry. The net dipole moment of the molecule is zero therefore it is polar.
6 0
3 years ago
Read 2 more answers
Complete the following reaction.<br> 14/7 N + 1/0 n —&gt; <br> blank/blank C+1/1 H
Nataly_w [17]

Answer:

14/6

Explanation:

U 2 can help me by marking as brainliest........

8 0
2 years ago
Read 2 more answers
What is the term for the smallest bit into which a chemical substance can be divided and still have the properties of that subst
ziro4ka [17]

Answer:

Molecule

Explanation:

molecule of the substance.  You can break the molecule down further, into the atoms that make it up, but those don't have the properties of the original  'compound'.

Here's an example:

-- Sodium is a soft, slippery metal, that explodes when water touches it.

-- Chlorine is a poisonous green gas.

When an atom of Sodium and an atom of Chlorine combine, they make one molecule of a substance called "Sodium Chloride".  That's SALT !  It isn't green, it isn't a gas, it isn't poisonous, it isn't soft and slippery, and it doesn't explode when water touches it.

3 0
3 years ago
A forward reaction in which adding heat decreases product formation is _________, while a forward reaction in which adding heat
ELEN [110]
I believe the correct answer from the choices listed above is option A. <span>A forward reaction in which adding heat decreases product formation is exothermic, while a forward reaction in which adding heat increases product formation is endothermic. Exothermic would mean that heat is being released by the process while the opposite is called endothermic in which it absorbs heat.</span>
3 0
3 years ago
What happened to the wind speeds of the storms?
oksano4ka [1.4K]
They would most likely speed up.
6 0
3 years ago
Other questions:
  • How many moles are 1.20 x 1025 formula units of calcium iodide?
    10·1 answer
  • What is the purpose of finding oxidation states in the half-reaction method for balancing equations?
    9·1 answer
  • 33p is a radioactive isotope of phosphorus. can 33p be used to make a radioactive nucleotide?
    7·2 answers
  • Question 1(Multiple Choice Worth 4 points)
    8·2 answers
  • 5. Convert the following numbers into scientific notation <br> 0.04500 hm​
    15·1 answer
  • What is the total number of electrons shared in a double covalent bond?
    5·1 answer
  • 1. Find the elements magnesium, cesium, and nitrogen on the periodic table. a. What monoatomic ions would each form? Write this
    11·1 answer
  • What are 1A, 3B, and 7A examples of on the periodic table?
    9·2 answers
  • A balloon with a volume of 0.5L at 293K is cooled to 20K. What is the balloon's new<br> volume?
    7·1 answer
  • 1. How many moles of potassium are present in 4.23 x 1025 potassium atoms?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!