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zloy xaker [14]
3 years ago
9

What is meant by controlled variable in chemistry

Chemistry
1 answer:
Gekata [30.6K]3 years ago
3 0
The controlled variable is the one that stays constant and remains the same throughout the whole investigation
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What is a simple definition of atom, particle, and kinetic?
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Answer:

Atom: The smallest particle of an element that has the properties of the element and can exist either alone or in combination.

Particle: One of the very small parts of matter (as a molecule, atom, or electron)

Kinetic: Of or relating to the motions of material bodies and the forces and energy associated with them

Explanation:

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What is the first step in nucleophilic addition under acidic conditions?
damaskus [11]

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A nucleophile view the full answer Question 3 (1 point) What is the first step in nucleophilic addition under acidic conditions? Protonation of the nucleophile Addition of the nucleophile Loss of water Protonation of the carbonyl

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Methane, CH4, is a(n) saturated or unsaturated hydrocarbon
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True or False: A charged object has a surplus or deficiency of electrons
nadya68 [22]

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use the gizmos to mix 200 G of copper at 100 C with 1000 g of water at 20 C whatis the final temperature
ziro4ka [17]

Answer:

Explanation:

mass of copper = 200 g at temperature 100°C

mass of water = 1000 g at 20⁰C

Let the final temperature be T .

specific heat of copper = .385 J per gram

specific heat of water = 4.182 J per gram

heat lost = mass x specific heat x fall of temperature

heat lost by copper

= 200 x .385 x ( 100 - T )

heat gained by water

= 1000 x 4.182 x ( T - 20 )

heat lost by copper = heat gained by water

200 x .385 x ( 100 - T )  = 1000 x 4.182 x ( T - 20 )

7700 - 77 T = 4182 T - 83640

4259 T  = 91340

T = 21.44⁰C .

5 0
3 years ago
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