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
Kipish [7]
2 years ago
15

1. How much energy (in KJ) is required to convert 50.0g of ice at – 30 ˚C to steam at130˚C.

Chemistry
1 answer:
Vitek1552 [10]2 years ago
4 0

Answer:

How much heat energy required to convert following?

How much heat energy, in kilojoules, is required to convert 47.0 g of ice at -18.0 C to water at 25.0 C ?

Specific Heat of Ice - 2.09 j/g * c

This is how I did it and the answer is wrong...Please check and correct me

Q = m * Cice * Change in Temp

Q = (47.0 g)(2.09 J/g*c)(43) = 4222.6 J * 0.001 kj / j = 4.22 kj

You might be interested in
How many atoms of oxygen are in 0.100 mol of silicon dioxide?
lys-0071 [83]
1) Silicon dioxide formula: SiO2  ....... 2 is a subscript for the O atom

2) From the formula you have 1 molecula of SiO2 contains 1 atom of SiO2

3) Then, 0.100 mol of SiO2 contains 0.1 mol of Si

4) Multiply by Avogadro's number: 0.100mol *  6.022*10^23 atoms/mol= 6.02*10^22 atoms

Answer: 6.02*10^22 atoms
3 0
3 years ago
Which of the following is an example of a covalent bond?
loris [4]

Answer:

C. H2O

yep this one is right

4 0
3 years ago
Which of the following elements can form diatomic molecules held together by triple covalent bonds?
Art [367]
Nitrogen can form a diatomic molecule held together by triple bonds.
6 0
2 years ago
Read 2 more answers
Why do solids exist ?
lubasha [3.4K]

Answer:

A solid's particles are packed closely together. The forces between the particles are strong enough that the particles cannot move freely; they can only vibrate. As a result, a solid has a stable, definite shape and a definite volume. Solids can only change shape under force, as when broken or cut.

7 0
2 years ago
Read 2 more answers
What are 3 household examples of bases? &amp;<br> What are 3 characteristics of Bases
Digiron [165]
Bleach
glass cleaner
dish-detergent
A base removes hydrogen ions from a solution
A base decreases the hydrogen ion concentration in a solution
on a ph scale something is basic if it's measured 8-14

4 0
3 years ago
Other questions:
  • 14 POINTS
    10·2 answers
  • 10.How do you make sure there is no cross contamination of your samples of<br> substances?
    15·1 answer
  • What happens to the acidity of solutions A and B after dry ice is added? The pH of solution A decreases, and the pH of solution
    12·2 answers
  • Marjorie is trying to determine the identity of an unknown substance. After running tests, she determines that the substance is
    9·1 answer
  • What is the difference between mass and volume?
    11·2 answers
  • strychnine a deadly poison, has a formula mass of 334 g mol- and a percent composition of 75.42% C, 6.63% H, 8.38% N and the bal
    5·1 answer
  • This version of Einstein's equation can be used directly to find what value? `Δm = E/c^2
    10·2 answers
  • Explain why your hair sticks to a plastic (polyethylene) comb.
    15·2 answers
  • True or False:
    6·2 answers
  • Which of the following is the equation for wave speed?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!