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
nika2105 [10]
3 years ago
7

When heat energy is added, two changes are observed: Change A: Solid changes to a liquid. Change B: Solid changes directly to a

gas. What are the names for phase changes A and B?
a-- A is freezing and B is condensation.

b--A is freezing and B is sublimation.

c-- A is melting and B is condensation.

d--A is melting and B is sublimation.

THE ANSWER IS D
Chemistry
2 answers:
Inessa05 [86]3 years ago
7 0

Answer:

The answer is d-- A is melting and B is sublimation.

Explanation:

A is melting because a solid is changing into a fluid and B is sublimation because a solid changing straight into a gas.

guajiro [1.7K]3 years ago
3 0

Answer:

D) A is melting and B is sublimation.

You might be interested in
A person's heartbeat is 89 beats per minute. If his/her heart beats 3.1e9 times in a lifetime, how long (in whole years) does th
andrezito [222]
I think the answer is 82.5
5 0
3 years ago
True or false? You can follow the progress of a reaction that produces a gas using a sensitive mass
sasho [114]

Answer:

true

Explanation:

3 0
2 years ago
What part of the sun do we see from earth?
NISA [10]

Answer:

photosphere

Explanation:

photosphere

There are 3 main layers of the Sun that we can see. They are the photosphere, the chromosphere and the corona. Together they make up the "atmosphere" of the Sun. The part of the Sun that glows (and that we see with the naked eye) is called the photosphere

8 0
3 years ago
Read 2 more answers
How many liters of H2O gas are produced when
anyanavicka [17]
1 mole C3H8 produces 4 moles H2O. So, first we convert 32 grams of propane to moles and then find moles of H2O. Then convert moles of H2O to grams of H2O
Moles of H2O produced = 32 g C3H8 x 1 mole/44 g x 4 moles H2O/mole C3H8 = 2.909 moles H2O
Grams H2O produced = 2.909 moles H2O x 18 g/mole = 52.36 g = 52 g H2O
8 0
2 years ago
from the following equation in which decomposition of CaCO3 takes place, give your justification. CaCO3 gives Ca +CO2 ​
IceJOKER [234]

Answer:

CaCO₃(s) => CaO(s) + CO₂(g) ... GpIIA Decomp

Explanation:

Metallic Carbonates decompose into a metallic oxide and carbon dioxide.

Examples:

Na₂CO₃(s) => Na₂O(s) + CO₂(g) ... GpIA Decomp

MgCO₃(s) => MgO(s) + CO₂(g) ... GpIIA Decomp

7 0
3 years ago
Other questions:
  • Consider two equal-volume flasks of gas at the same temperature and pressure. One gas, oxygen, has a molecular mass of 32. The o
    8·1 answer
  • Consider the following reaction: CH3OH(g)⇌CO(g)+2H2(g) Part A Calculate ΔG for this reaction at 25 ∘C under the following condit
    5·1 answer
  • Which sentence about the periodic table of elements is true? *
    13·1 answer
  • One mole of Ca is equal to how many atoms​
    15·1 answer
  • How is the Scientific Method used in science?
    15·1 answer
  • What volume of concentrated hydrochloric acid (12.0 M HCl) is required to make 2.0 liters of a 3.0 M HCl solution?
    5·2 answers
  • *multiple choice*
    5·1 answer
  • What characteristic of light determines what color it appears?
    13·1 answer
  • E girls get free brainliest<br>​
    13·1 answer
  • What does the crystalline structure of metals resemble?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!