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kherson [118]
3 years ago
10

Smallest particle of a substance that can retain its properties & is

Chemistry
1 answer:
Aleksandr-060686 [28]3 years ago
8 0

Answer:

Molecules

Explanation:

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How would a system in which both matter and energy are exchanged freely between the system and the surroundings be classified? (
Nata [24]

Answer:

An open system

Explanation:

An open system is a system in which both matter and energy are exchanged freely between the system and the surroundings.

An example is a pot of water boiling on the stove. The surroundings (the stove) can supply heat energy to the water and the water can escape into the atmosphere.

A <em>closed system</em> is a system in which energy but not matter is exchanged freely between the system and the surroundings.

An example is a pressure cooker on the stove. The surroundings (the stove) can supply heat energy to the food inside, but no matter can escape through the closed lid.

An <em>isolated system</em> is a system in which neither energy nor matter can be exchanged between the system and the surroundings.

An example is a thermos of hot soup. The cap prevents matter from escaping and the shiny interior reflects heat back into the soup.

8 0
3 years ago
The substances below are listed by increasing specific heat capacity value. Starting at 30.0 °C, they each absorb 100 kJ of ther
JulijaS [17]

The heat change is related to specific heat as

Heat change = mass of substance X specific heat X change in temperature

So if we are considering same amount of substance

and we are starting with the same temperature

the change in temperature will be inversely proportional to the specific heat

higher the specific heat lower the temperature change

Thus the change in temperature will be least for the substance with highest specific heat.

Answer: Hydrogen

4 0
3 years ago
A chemist adds of a copper(II) sulfate solution to a reaction flask. Calculate the mass in kilograms of copper(II) sulfate the c
FrozenT [24]

Answer:

The question is incomplete as some details are missing. Here is the complete question ; A chemist adds 45.0mL of a 0.434M copper(II) sulfate CuSO4 solution to a reaction flask. Calculate the mass in grams of copper(II) sulfate the chemist has added to the flask. Round your answer to 2 significant digits

Explanation:

The step by step explanation is as shown in the attachment

8 0
3 years ago
Is this sentence true or false ? hydrogen is considered to be a metal
victus00 [196]
It is false, hope this helps!
4 0
3 years ago
Read 2 more answers
It's actually Science but I didn't find it.
fomenos

Answer:

Forces acting on an object may be balanced or unbalanced. When the forces  acting on an object have <u>equal</u> strength and act in opposite directions, they  are <u>balanced</u>. These forces cancel out one another, and the <u>motion</u> of the  object does not <u>change</u>.  When the forces acting on an object are <u>unbalanced</u>, they do not cancel out  one another. An unbalanced force acting on an object results in the object’s  motion <u>changing</u>. The object may change its <u>speed</u> (speed up or slow down), or it may change its <u>direction</u>.  <u>Friction</u> is a force that resists the motion or the tendency toward motion  between two objects in contact with each other.  <u>Gravity</u> is a force that pulls objects toward one another. For example, Earth  pulls all objects toward it.

Explanation:

3 0
3 years ago
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