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ratelena [41]
2 years ago
13

Which of the following samples would be the most compressible?

Chemistry
1 answer:
Andrej [43]2 years ago
7 0

Answer:

CO2 (g)

Explanation:

In solids the interatomic or intermolecular space is least . It is most pronounced in gases . That is why inter molecular or interatomic attraction is least in gases . That is why gas flows .

Hence , when we try to compress a gas , due to inter molecular space , it is most likely to get compressed . It will be least compressed when we try to compress a solid because of lack of intermolecular space .

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Which of the following accurately describes the behavior of water when subjected to temperature change?
77julia77 [94]
I believe this is the best one:
B. The volume of water will increase if cooled from 3°C to 2°C.

I don't think D) because water expands from 4°C to 0°C

"When liquid water is cooled, it contracts like one would expect until a temp of approximately 4 degrees Celsius is reached. After that, it expands slightly until it reaches the freezing point."
3 0
3 years ago
Read 2 more answers
Copper sulfate is a blue solid that is used to control algae growth. Solutions of copper sulfate that come in contact with the s
True [87]

Answer:

185.49 grams of Zinc would react with 454g (1lb) of copper sulfate

Explanation:

Yo know the following balanced reaction:

CuSO₄(aq)+ Zn(s) →Cu(s) + ZnSO₄(aq)

You can see that by stoichiometry of the reaction (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of reagents and products are part of the reaction:

  • CuSO₄: 1 mole
  • Zn: 1 mole
  • Cu: 1 mole
  • ZnSO₄: 1 mole

Being:

  • Cu: 63.54 g/mole
  • S: 32 g/mole
  • O: 16 g/mole
  • Zn: 65.37 g/mole

the molar mass of the compounds participating in the reaction is:

  • CuSO₄:63.54 g/mole + 32 g/mole + 4*16 g/mole= 159.54 g/mole ≅ 160 g/mole
  • Zn: 65.37 g/mole
  • Cu: 63.54 g/mole
  • ZnSO₄: 65.37 g/mole + 32 g/mole + 4*16 g/mole= 161.37 g/mole

Then, by stoichiometry of the reaction, the following amounts of mass of reagent and product participate in the reaction:

  • CuSO₄: 1 moles* 160 g/mole= 160 g
  • Zn: 1 mole* 65.37 g/mole= 65.37 g
  • Cu: 1 mole* 63.54 g/mole= 63.54 g
  • ZnSO₄: 1 mole* 161.37 g/mole= 161.37 g

Now you can apply the following rule of three: if 160 grams of CuSO₄ react with 65.37 grams of Zn by this reaction stoichiometry, 454 grams of CuSO₄ with how much mass of Zn will it react?

mass of Zn=\frac{454 grams of CuSO_{4} *65.37 grams of Zn}{160 grams of CuSO_{4}}

mass of Zn= 185.49 grams

<u><em>185.49 grams of Zinc would react with 454g (1lb) of copper sulfate</em></u>

4 0
3 years ago
Ben and Jerry were testing powders in science lab. First they put the powder in a zip lock bag. Next they added some water. The
tangare [24]
A) because when gas is produced it changes chemical form whereas the chemical change is obvious.
8 0
2 years ago
Read 2 more answers
Read temprature on thermometer i am confusion
balu736 [363]

Answer:

a)22.2°C after adding magnesium

b)17.3°C before adding magnesium

c) 4.9 is change

8 0
3 years ago
A piece of wood burns to form ash. ____C_____ Water evaporates into steam. ____P_____ A piece of cork is cut in half. ____P_____
IceJOKER [234]

Answer:

A piece of wood burns to form ash - Chemical change

Water evaporates into steam - Physical change

A piece of cork is cut in half. __ Physical change

A bicycle chain rusts. _____Chemical change

Food is digested in the stomach. _____Chemical change

Water is absorbed by a paper towel. _____Physical change

Hydrochloric Acid reacts with zinc. _____Chemical change

A piece of an apple rots on the ground. ____Chemical change

A tire is inflated with air - Physical change

A Plant turns sunlight, CO2, and water into sugar and oxygen. _Chemical change

Sugar dissolves in water - Physical change

Eggs turn into an omelet. _____Chemical change

Milk sours. Chemical change

A popsicle melts. _____Physical change

Turning brownie mix into brownies. Chemical change

Explanation:

Matter undergoes two types of changes: physical changes and chemical changes.

A physical change is one that affects only the physical properties of a substance such as colour, size, shape, etc., and in which no new substances are formed. Physical changes are easily reversible.

Chemical changes are changes which affect the chemical characteristics and properties of a substance such as reactivity, acidity, basicity, etc., resulting in the formation of new substances.

The following changes below are categorized as either physical or chemical changes based on which of the properties of the substance is affected and whether new substances result or not.

A piece of wood burns to form ash - Chemical change

Water evaporates into steam - Physical change

A piece of cork is cut in half. __ Physical change

A bicycle chain rusts. _____Chemical change

Food is digested in the stomach. _____Chemical change

Water is absorbed by a paper towel. _____Physical change

Hydrochloric Acid reacts with zinc. _____Chemical change

A piece of an apple rots on the ground. ____Chemical change

A tire is inflated with air - Physical change

A Plant turns sunlight, CO2, and water into sugar and oxygen. _Chemical change

Sugar dissolves in water - Physical change

Eggs turn into an omelet. _ Chemical change

Milk sours - Chemical change

A popsicle melts. _____Physical change

Turning brownie mix into brownies - Chemical change

3 0
2 years ago
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