The air in a room has a mass of 50 kg and a specific heat of 1,000 J/(kg.degrees celcius). What is the change in thermal energy of the air when it warms from 20 degrees celcius to 30 degrees celcius?

Q: A scuba diver inhales 110 mL of compressed air at a pressure of 3.7 atm. What is the pressure of air…

A: In the given question given that initial value of pressure and volume and also given the value of…

Q: A 5000-W heater is used to heat water. How long will it take to heat 20 kg of water from 20°C to…

A: Given:

Q: The temperature of 41 degrees Fahrenheit is equivalent to 5 degrees Celsius, and the temperature…

A:

Q: The heat of vaporization of water is 2257 Joules/gram or 540 calories/gram. What energy in Joules is…

A:

Q: The human body uses 7500 kJ of energy every day. What is the rate of energy consumption per second…

A: Given  Enrgy E=7500kJ

Q: You have been told that a fire is expected to spread at a rate of 150 feet per minute. What is the…

A:

Q: How many calories does an electric heater of 100 watts generate per second?

A:

Q: 800 mL of gas is at a pressure of 100 kpa. The pressure decreases until the volume is 3.2 L. What is…

A:

Q: A liter of water at room temperature (20 degrees) is placed in a refrigerator with a temperature of…

A: Given quantities: mass of water (m) = 1 kg                                              .... ( as 1…

Q: When 860,000 calories (3,612,000 Joules) of energy are removed from 650 kg of water, by how much…

A: Thermal energy is a form of energy that is transferred between two substances at different…

Q: How much will the temperature change if 5000J of heat is added to 1.0kg of sand?

A: Given data:  Heat added (Q) = 5000 J Mass (m) = 1.0 kg Required: Change in temperature (ΔT)

Q: What is the change in internal energy of the system if 2000J of heat leaves the system and 2500J of…

A: Heat lost by the system, QL = 2000 J Work done by the system, W = 2500 J Hence, heat gained by the…

Q: A calorie is _____ times the energy of a calorie.

A: Here given calorie. We have to find how much times of the energy calorie is A calorie.

Q: A kilocalorie is equal to one of the following. Is it equal to: a. 1000 Joules b. 4.2 Joules O c.…

A: Kilocalorie and Joule are the units of energy.

Q: A gas-fired turbine generator for production electricity has an efficiency of about 50%. How many…

A: Efficiency is:         η=WQ W is heat output Q is heat given to the system. Amount of heat required…

Q: The amount of heat needed to raise the temperature of 1 gram of water by 1°C is

A: the amount of heat required at a pressure of 1 standard atmosphere to raise the temperature of 1…

Q: A 5-kilogram concrete block falls to the ground from a height of 10 meters. If all of its original…

A: The given values are, m=5 kgh=10 mCp=Cp,concrete=880 J/kg·K

Q: A high jumper of mass 60kg consumes a meal of 3.00 x 10 ³ kcal prior to a jump. If 3.3% of the…

A: The gravitational potential energy of a mass m at a height h from the Earth's surface is defined…

Q: A person consumes about 2300 Cal a day. 1 Cal = 4186 J and 1 kWh= 860 Cal.If a power company charges…

A: person consumes = 2300 cal in one day 1 kwh = 860 cal  cost of 1 kwh energy = 12 ¢ means cost of 860…

Q: A certain household has consumed 250 units of energy during a month. How much

A: Given:- The certain household has consumed 250 units of energy in a month  Find:- How much energy is…

Q: A bottle containing 3 kg of water at a temperature of 20 degrees Celsius is placed in a refrigerator…

A:

Q: If the mass a piece of aluminum is 2kg and the change in heat is 3K, how much heat does it generate?…

A: Given data,                mass of Aluminum, M = 2 kg                change in temperature, ∆T = 3 K…

Q: If it takes 41000 joules of heat to melt 200 grams solid copper to liquid copper what is the heat of…

A: The expression for the heat of fusion of copper is, Q=mLL=Qm

Q: If it takes 41000 joules of heat to melt 200 grams solid copper to liquid copper, what is the heat…

A: The expression for the heat transfer,

Q: The temperature of a cup of coffee t min after it is poured is given by the following equation where…

A:

Q: An Aluminum rod is 20 cm long at 20 0C and has a mass of 350 g. If 10,000 J of thermal energy is…

A:

Q: If 3000 Joules was used to heat up 100 grams of water, how much would the temperature of the water…

A:

Q: The equation for the power emitted by the human body is . If the area of the human body is 3.5 m2,…

A:

Q: An air conditioner uses 11,260 J of energy to run, but only 6,428 J of energy is used to heat or…

A:

Q: A heater transfers 2550000J to a cubic meter of wood if each cubic meter of wood has a mass of 1500…

A: As we know Q=mc∆T=heat gained by m kg of specific heat capacity c to increase temperature by ∆T

Q: At room temperature, an oxygen molecule with mass of 5.31x10^-26kg typically has a kinetic energy of…

A:

Q: A wooden block has a mass of 0.200 kg, a specific heat of 710 J/(kg.degrees celcius), and is at a…

A: Thermal energy is defined as the energy contained within a system. Energy can be exchanged in the…

Q: What is the amount of heat it generates in a minute?

A: according to joules heat law. heat generated in conductor H = i2Rt where i = amount of current…

Q: What is the change in internal energy of a system that does 7 kJ of work and absorbs 800 J of heat?

A: Given :  Energy absorbed by the system, Q = 800 J Work done by the system = 7 kJ Required : Change…

Q: A volume of helium is at a pressure of 135 kPa. The new volume is 40 L after the pressure drops to…

A: Solution: According to Boyle Law, P1V1 = P2V2 , where P1 and P2 are initial and final pressures and…

Q: A heater transfers 2550000J to a cubic meter of wood if each cubic meter of wood has a mass of…

A: Specific heat capacity(s) : Heat required to raise the temperature of the 1kg  material by 1 degree.…

Q: A man consumes 3000 kcal of food in one day, converting most of it to thermal energy to maintain…

A: Heat of evaporation can be expressed as

Q: A 0.003 kg piece of copper is heated and fashioned into a bracelet. The amount of energy transferred…

A:

Q: If the degrees Fahrenheit scale is twice the degrees Celsius scale, what is the temperature value in…

A: Given data: TF = 2TC Required: Temperature valve in °F and °C

Q: How much heat (in J) is needed to raise the temperature

A: Given that:- Mass=9kg T1=380 C, T2=8300 C /\T=T2-T1=7920 C C= Specific heat capacity of silver=230…

Q: If we use 67 W of power to heat 148 g of water, how long will it take to raise the temperature of…

A: Given: mass=148g =0.148 Kg            Power=67W              Ti= 15 °C              Tf=25 °C…

Q: If the temperature is 5 degrees Celcius in the high desert with an altitude of 3500 meters. What is…

A:

Q: Peter's SUV has a fuel efficiency rating of 11.8 L /100 km. How much fuel would his SUV use on a 450…

A: Given:- fuel used per 100 km  V =11.8 L Trip distance d = 450 km

Q: A person eats an 408.85 J snack before working out. If a person uses all of their eaten energy to…

A:

Q: A block of tungsten changes in temperature from 15 ˚C up to a temperature of 125 ˚C when 7,500,000…

A: We know that, Cp = 0.133 J/g°C Given, T1= 15°C T2= 125°C Q= 7500000 J

Q: When 350 kcal of heat is added to 15kg of a substance, its temperature increases 20 degrees celsius.…

A:

Q: If 2059 J of heat is gained by 57 g of oil that has specific heat capacity of (2.4 J/(g °C),…

A: Heat gained = 2059 Joules  Mass of oil = 57 g  Specific heat capacity of oil = 2.4 J/(g-°C)

Calorimetry

Measuring the heat transferred during chemical reactions or other physical processes is known as calorimetry. It comes under the branch of thermochemistry.