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
Serggg [28]
3 years ago
6

Determine which equations you would use to solve the following problem: Calculate the amount of heat needed to change 20.0 g of

ice at -10.0°C to water at 89.0°C.
Chemistry
1 answer:
Inessa [10]3 years ago
3 0

Answer:

Q = 4019.4 J

Explanation:

Given data:

Mass of ice = 20.0 g

Initial temperature = -10°C

Final temperature = 89.0°C

Amount of heat required = ?

Solution:

specific heat capacity of ice is 2.03 J/g.°C

Formula:

Q = m.c. ΔT

Q = amount of heat absorbed or released

m = mass of given substance

c = specific heat capacity of substance

ΔT = change in temperature

ΔT = T2 - T1

ΔT =  89.0°C - (-10°C)

ΔT = 99°C

Q = 20.0 g ×2.03 J/g.°C × 99°C

Q = 4019.4 J

You might be interested in
Which of the following cycles does not involve living organisms?
Aneli [31]
The correct answer is letter C. Rock Cycle. Living organisms involved in carbon cycle, oxygen cycle, and in nitrogen cycle. These are involved in the air that living organisms are taking in and out.
7 0
3 years ago
Read 2 more answers
If the temperature of a liquid-vapor system at equilibrium increases, the new equilibrium condition will
nikdorinn [45]
If the temperature of a liquid-vapor system at equilibrium increases, it will shift towards the vapor phase, assuming that the pressure remains equal. The concentration of vapor will also increase relative to the concentration of liquid in the system. Thus, the new equilibrium condition will have more vapor than liquid. 
6 0
3 years ago
1. organisms of different species that share similar characteristics most likely have..
SSSSS [86.1K]

Answer:

1. Parents from both species.

2. Because of natural selection.

Explanation:

6 0
3 years ago
In the process of preparing liquid air for fractional distillation, one fraction will be separated as a solid. What is the chemi
makvit [3.9K]

Answer:

carbon dioxide CO₂

Explanation:

Each gas has a characteristic boiling point. You can separate a random sample of gases by gradually cooling the sample until each component gas liquifies. Some compounds, such as CO₂ never liquify. Instead, they turn directly into solids.

3 0
3 years ago
Enter a formula in cell b7 to calculate the average value of cells b2:b6
AVprozaik [17]
In order to calculate the average value of cells B2:B6, you need to enter the formula on cell B7, On the Home tab, in the Editing group, click the Sum (AutoSum) button arrow and select Average . (and press Enter). The answer in this question is On the Home tab, in the Editing group, click the Sum (AutoSum) button arrow and select Average . (and press Enter).
6 0
3 years ago
Other questions:
  • Particles of sand or dust rubbing across the surface of rocks is called:
    10·2 answers
  • Arrange these gases in order of decreasing standard molar entropy:
    8·1 answer
  • What are the two ways in which pressure can be increased?
    10·1 answer
  • The work function for metallic potassium is 2.3 eV. Calculate the velocity in km/s for electrons ejected from a metallic potassi
    6·1 answer
  • The atria beat prior to the ventricles. What purpose does this serve?
    13·1 answer
  • 1-Which reaction shown below is carried out by nitrifying bacteria? I will mark you as brainlist
    5·1 answer
  • Calculate the mass of a
    7·1 answer
  • How many moles are there in 67.2 grams of h2
    11·1 answer
  • How does the numbers valence electrons in oxygen compare to the valence electrons in hydrogen?
    5·1 answer
  • Balance the equation by putting the correct number in front of each compound. You can work this out mathematically or by drawing
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!