Answer:
Ok So....
Explanation:
The condition in which a body covers equal distance in an equal interval of the time is known to be uniform velocity. if both its magnitude and direction do not change with time then it can be said that the body is at uniform velocity. Hope this helps!~ (Sorry if you get it wrong or I did-)
Answer:
When heat is added to a substance, the molecules and atoms vibrate faster. As atoms vibrate faster, the space between atoms increases. The motion and spacing of the particles determines the state of matter of the substance. ... Solids, liquids and gases all expand when heat is added.
Answer:
The specific heat of the unknown substance is 1.22 J/g.°C.
Explanation:
Heat lost by substance (Qc) = Heat gained by the water (Qw)
,
<em>- (Qc) = (Qw).</em>
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- We can calculate the amount of heat (Qw) gained by water using the relation:
Qw = m.c.ΔT,
where, Qw is the amount of heat released to water (Q = ??? J).
m is the mass of water (m = 110.0 g).
c is the specific heat capacity of solution (c = 4.18 J/g.°C).
ΔT is the difference in T (ΔT = final temperature - initial temperature = 32.4°C - 24.2°C = 8.2°C).
<em>∴ Q = m.c.ΔT = </em>(110.0 g)(4.18 J/g.°C)(8.2°C) = <em>3770.36 J.</em>
- Now, the amount of heat lost by the substance <em>(Qc) = - 3770.36 J.</em>
(Qc) = m.c.ΔT,
where, Qc is the amount of heat lost by substance (Qc = - 3770.36 J).
m is the mass of water (m = 42.5 g).
c is the specific heat capacity of solution (c = ??? J/g.°C).
ΔT is the difference in T (ΔT = final temperature - initial temperature = 32.4°C - 105.0°C = -72.6°C).
∴ (- 3770.36 J) = (42.5 g)(c)(-72.6°C).
∴ c = (- 3770.36 J)/(42.5 g)(-72.6°C) = 1.222 J/g.°C.