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Leno4ka [110]
2 years ago
7

An unknown or changeable quantity is called a(n)...

Chemistry
2 answers:
Natali [406]2 years ago
7 0
<h2>Answer:</h2>

An unknown and changeable quantity is known as an variable.

<h3>Explanation:</h3>

There are two types of quantities:

Constant quantities:

Quantities which can not be changed by changing physical parameters and their value is normally known.

Variable quantities:

These quantities can be changed by changing the physical parameters or conditions. Due to which they are unknown for particular conditions and have to be measured.

givi [52]2 years ago
6 0
It is called a variable
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jarptica [38.1K]

Answer: -112200J

Explanation:

The amount of heat (Q) released from an heated substance depends on its Mass (M), specific heat capacity (C) and change in temperature (Φ)

Thus, Q = MCΦ

Since,

Q = ?

Mass of water vapour = 30.0g

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Φ = (Final temperature - Initial temperature)

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Q = -112200J (The negative sign does indicates that heat was released to the surroundings)

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5 0
3 years ago
This system has an equilibrium constant of 0.105 at 472°C: N2(g) + 3H2(g) ↔ 2NH3(g)
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Answer:

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3 years ago
An unknown aqueous metal analysis yielded a detector response of 0.255. When 1.00 mL of a solution containing 100.0 ppm of the m
AVprozaik [17]

Answer:

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1.022ppm is the unknown concentration of the metal

3 0
2 years ago
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solniwko [45]

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