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iVinArrow [24]
4 years ago
7

Use the following models to classify substances based on composition.

Chemistry
2 answers:
evablogger [386]4 years ago
7 0

Picture A and B are examples of pure substances.

Andreas93 [3]4 years ago
3 0

i think it is A.) and C.) im not sure though plz correct me if im wrong

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Explain 1 difference between Prokaryotic and Eukaryotic cells. plz plz plz plz plz help me plzzzzzzzzzzzzz all my points this du
tiny-mole [99]

Answer:

Prokaryotes are organisms made up of cells that lack a cell nucleus or any membrane-encased organelles. Eukaryotes are organisms made up of cells that possess a membrane-bound nucleus that holds genetic material as well as membrane-bound organelles.

Explanation:

5 0
3 years ago
Read 2 more answers
Ann and Jesse's mom is driving them to school. They are listening to music on an FM radio station. When they ride in the car wit
Svet_ta [14]

Answer: it they are both in the same place

Explanation:I don’t know and don’t care loser

3 0
3 years ago
How many joules are needed to change the temperate of 22g of water from 18°C to 33°C?
Ira Lisetskai [31]

Answer:

Q =  1379.4 J

Explanation:

Given data:

Mass of water = 22  g

Initial temperature = 18°C

Final temperature = 33°C

Heat absorbed = ?

Solution:

Specific heat capacity:

It is the amount of heat required to raise the temperature of one gram of substance by one degree.

Specific heat capacity of water is 4.18 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 = 33°C - 18 °C

ΔT =  15°C

Q = 522 g ×4.18 J/g.°C× 15°C

Q =  1379.4 J

5 0
3 years ago
I have 250 mL of an acid. If a friend gives me another 75 mL of the same acid, how much will I have?
Zigmanuir [339]

Answer:325 mL of acid

Explanation:250 mL + 75 mL = 325 mL

3 0
2 years ago
Which type of property can be observed only by changing a substance into a different substance
Nana76 [90]

Chemical Property

<u>Explanation:</u>

When a substance is changed into another substance, may be due to addition of some other substance or removal of water from that substance.

* its identity changes

*its reactivity changes

*reactivity towards water, air and many other substances will change

*its chemical composition changes

and all these changes occurs due to the chemical properties.

If the physical property changes then there will be change in the state of matter, but its boiling point, melting point , reactivity towards water, air and other substances will not change, and it will not lose its identity.

3 0
3 years ago
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