The energy required to raise the temperature of 3 kg of iron from 20° C to 25°C is 6,750 J( Option B)
<u>Explanation:</u>
Given:
Specific Heat capacity of Iron= 0.450 J/ g °C
To Find:
Required Energy to raise the Temperature
Formula:
Amount of energy required is given by the formula,
Q = mC (ΔT)
Solution:
M = mass of the iron in g
So 3 kg = 3000 g
C = specific heat of iron = 0.450 J/ g °C [ from the given table]
ΔT = change in temperature = 25° C - 20°C = 5°C
Plugin the values, we will get,
Q = 3000 g × 0.450 J/ g °C × 5°C
= 6,750 J
So the energy required is 6,750 J.
Answer: The correct answer is option D.
Explanation:
Mass of the NaCl = 225 g
Volume of the solution ,V = 0.25 L
15.4004 mol/L is the molarity of the solution. The most closest option to our answer is option D.
Answer:
it is made up of rays of varying frequencies
The answer would be a. C2H4(ethylene)
1C2H4+3O2~>2CO2+2H2O
Velocity = change in displacement/ change over time
V = 27/ 2 = 13.5m/s