Table of Contents
- 1 How do you find the specific heat of an unknown substance?
- 2 What is the specific heat of an unknown substance if a 2.50 g sample?
- 3 What is the specific heat of the unknown metal?
- 4 What is Q specific heat?
- 5 What is the specific heat capacity of a substance if 2.41 x10 * 4 J are needed to change the temperature of 105.0 g of it from 25.0 ºC to 250.0 ºC?
- 6 What is the specific heat capacity of a substance if?
How do you find the specific heat of an unknown substance?
1 Expert Answer The formula giving the amount of energy required to raise the temperature of a substance with a given specific heat is: q = (m)(cp)(ΔT), where q is the energy, m is the mass, cp is the specific heat, and ΔT is the change in temperature.
What is the specific heat of an unknown substance if a 2.50 g sample?
4.02J/g⋅∘C.
What is the specific heat capacity of a substance if 2.41 x10?
The specific heat capacity of the substance is 1.02Jg⋅∘C .
What is the specific heat capacity of an unknown substance?
Explanation: A substance’s specific heat tells you how much heat is needed in order to raise the temperature of 1 g of that substance by 1∘C . In your case, the sample is said to have a mass of 400 g . The change in temperature is said to be equal to 45∘C .
What is the specific heat of the unknown metal?
approximately 916 J kg−1
The specific heat capacity of the unknown metal is approximately 916 J kg−1K−1, which roughly corresponds to the heat capacity of aluminium as listed in the Handbook of Chemistry and Physics.
What is Q specific heat?
Q = heat energy (Joules, J) m = mass of a substance (kg) c = specific heat (units J/kg∙K)
What are the units of the variable C in Q Mcδt?
The units of specific heat capacity are J/(kg °C) or equivalently J/(kg K). The heat capacity and the specific heat are related by C=cm or c=C/m. The mass m, specific heat c, change in temperature ΔT, and heat added (or subtracted) Q are related by the equation: Q=mcΔT.
What is the specific heat of lead in J GC?
0.129
Heat Capacities for Some Select Substances
| Substance | specific heat capacity Cp,s (J/g °C) | molar heat capacity Cp,m (J/mol °C) |
|---|---|---|
| helium | 5.1932 | 20.786 |
| iron | 0.450 | 25.09 |
| lead | 0.129 | 26.4 |
| lithium | 3.58 | 24.8 |
What is the specific heat capacity of a substance if 2.41 x10 * 4 J are needed to change the temperature of 105.0 g of it from 25.0 ºC to 250.0 ºC?
What is the specific heat capacity of a substance if 2.41×104 J are needed to change the temperature of 105.0 g of it from 25.0ºC to 250.0ºC? d. 1.02 J/gºC. Which statement about enthalpy is true?
What is the specific heat capacity of a substance if?
Specific heat capacity is defined as the amount of heat required to raise the temperature of 1 kilogram of a substance by 1 kelvin (SI unit of specific heat capacity J kg−1 K−1).