Answer:
What is the following?
Explanation:
I think I can answer this, I recognize the question
Answer:
well for me I think
Explanation:
Water has higher heat capacity than methane because before heat can break the bond it has to reach a very high temperature
Answer:
1.08 M
Explanation:
From the question given above, the following data were obtained:
Initial volume (V₁) = 45 mL
Initial concentration (C₁) = 6 M
Final volume (V₂) = 250 mL
Final concentration (C₂) =?
The final concentration of the solution can be obtained by using the dilution formula as illustrated below:
C₁V₁ = C₂V₂
6 × 45 = C₂ × 250
270 = C₂ × 250
Divide both side by 250
C₂ = 270 / 250
C₂ = 1.08 M
Therefore, the final concentration of the solution is 1.08 M.
Answer:
ΔT = 66 °C
Explanation:
The kinetic energy (Ek) of the car can be calculated using the following expression.
Ek = 1/2 × m × v² = 1/2 × (1450 kg) × (36 m/s)² = 9.4 × 10⁵ J
where,
m: mass
v: speed
When the car stops, this energy is converted into heat (Q) used to raise the temperature of the iron brake drums, according to the following expression.
Q = c × m × ΔT
where,
c: specific heat
m: mass
ΔT: change in the temperature
Q = c × m × ΔT
9.4 × 10⁵ J = (448 J/kg.°C) × (4 × 8.0 kg) × ΔT
ΔT = 66 °C
