Answer:
164
1st step we will write desperate molar mass of each element
P1/V1=P2/V2
1/22.4=4/x
X=4 multiple by 22.4
V2=89.6L
D. 100%, extremely sure. Because Newton's 3rd law states every force has an equal and opposite reaction.
Answer:
Lens and focal point is the correct answer.
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
