Answer:
There is 6 ways substance can change phase. They are melting, freezing, evaporating, condensing, sublimination, and deposition.
Hope this helped
Explanation:
When equilibrium has been reached so, according to this formula we can get the specific heat of the unknown metal and from it, we can define the metal as each metal has its specific heat:
Mw*Cw*ΔTw = Mm*Cm*ΔTm
when
Mw → mass of water
Cw → specific heat of water
ΔTw → difference in temperature for water
Mm→ mass of metal
Cw→ specific heat of the metal
ΔTm → difference in temperature for metal
by substitution:
100g * 4.18 * (40-39.8) = 8.23 g * Cm * (50-40)
∴ Cm = 83.6 / 82.3 = 1.02 J/g.°C
when the Cm of the Magnesium ∴ the unknown metal is Mg
Answer:
0.21L
Explanation:
To solve this problem, we make use of Boyle’s law. It states that at constant temperature, the volume of a fixed mass of gas is inversely proportional to its pressure.
Mathematically PV = K
P1V1 = P2V2
P1 = 1 atm
V1 = 1.45L
P2 = 70 atm
v2 = ?
From the equation form, we know that
V2 = P1V1/V2
V2 = ( 1 * 1.45)/70
V2 = 0.021L
