The energy needed to keep a 75-watt lightbulb burning for 1.0h is 270kJ. Calculate the energy required to keep the lightbulb for 5.0h in each of the following energy units. joules Express your answer using two significant figures E= ? J kilocalories Express your answer using two significant figures E= ? kcal

Q: write the correct answer for the question

A: The reactions which releases energy, hence causing the temperature of the surroundings to rise are…

Q: A 1423 kg car is traveling down the road at 94.2 km/h. While traveling at this rate of speed, what…

A: The kinetic energy of any moving objects is 12mv2, where m is the mass of the object and v is the…

Q: An adult eats food whose nutritional energy totals approximately 2100 CalCal per day. The adult…

A: Given nutritional energy = 2100 cal Calories burnt = 1800 cal

Q: Mass of can (g) Mass of can and water (g) Initial mass of food sample (g) Final mass c food sample…

A: We can use the given data and required conversion factors for calculations.

Q: CAI = 0.22 kcal/kg°C A 0.60 kg length of aluminum wire is warmed by 22.3°C by an electric current.…

A: Heat is a form of energy  Which is given by  q° mc∆T  Where m= mass  C = specific heat  T=…

Q: A 73 kg student traveling in a car with a constant velocity has a kinetic energy of 2.0  104 J. What…

A: • Here is given that,      Mass of student, m  = 73 kg • Since, he is travelling with a constant…

Q: How many calories of heat (energy) would it take to heat 25.0 g of water from 35.0 °C to 45.0 °C?…

A: Given, Mass of water(m)= 25g Final temperature = 45°C Initial temperature = 35°C Temperature…

Q: A calorimeter is charged with 57.9 mL of water at 25.0 °C. After a reaction takes place in the…

A: Given, Volume of water = 57.9 mL Density of water = 1.00 g/mL Initial temperature (Ti) = 25°C Final…

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 1.97 kg sample…

A: We know that heat involved and specific heat capacity of a system are related by the equation- ∆H =…

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 153.0 mg sample…

A: Given data,  Mass of the sample of a pure substance= 153.0 mg = 153.01000gm= 0.153 g Temperature…

Q: What is AH when 1.40 mol of Sg reacts? Be sure your answer has the correct number of significant…

A: ∆H of the given reaction is = -20. 2 kJ  Given moles of S8 = 1.40 moles

Q: In metric terms, a typical automobile averages 5.72 km/L of gasoline burned. Gasoline has a heat of…

A:

Q: A person uses 494.9 kcal of energy to run a race. Convert the energy used for the race to the…

A: First, we need to understand that 1 kcal is equivalent to 1 Calorie (with a capital 'C'). This is…

Q: A 2.9-gg sample of rice is placed in a calorimeter. When the sample is burned, 26kJ is given off.…

A: From data mass of sample, m = 2.9 g  heat released, Q = 26kJ  Formula used Energy value = Qm

Q: A 228-g coin made of zinc is heated and placed in 100.0 g of water at 16.0°C. The temperature when…

A: The heat change during a chemical reaction is ; q=mc∆Tm=mass of substancec=specific heat…

Q: Calculate the calories needed to heat 7.9 grams of water from 15 degrees Celsius to 33 degrees…

A: Mass of water (m) = 7.9 g Initial temperature (Ti) = 15°C Final temperature (Tf) = 33°C Calories…

Q: One hour of bicycle riding can require 500-900 kcal of energy, depending on the speed, the terrain,…

A: Given : rate of energy consumed = 505 Kcal/hr Mass of fat to lose = 21.0 lbs Energy of 1 g of fat =…

Q: Expressing amounts of energy in different energy units is necessary to solve many chemistry…

A: Given , 1 cal = 4.184 J 1kcal = 1000 cal

Q: If a gas furnace releases 450 kcal of heat energy, what is the energy in kilojoules? (1 cal = 4.184…

A: Energy is the capacity to do work. There are different units for energy. They are, calories, joules,…

Q: None

A: Completed Table:| Food | Energy Content (kcal) | Energy Content (kJ) || Small apple | 95  | 397 ||…

Q: A hot tub holds 350.0 liters of water. How much energy, in kilocalories (kcal), would be required…

A: Given : Volume of water = 350.0 L Density of water = 1.000 g/mL = 1.000 Kg/L               (since 1…

Q: You are camping and wish to bake an apple crisp using your butane cooker. The crisp needs 1.5 x 103…

A: Answer:In this problem we have to find out the energy that can be produced by 100g butane and then…

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 236.0 mg sample…

A: We know that q = mc∆T ....(1)  q = heat required = 3.7 J, ∆T = increase in temperature = 11.6 °C…

Q: 1621 kg car is traveling down the road at 89.4 km/h. While traveling at this rate of speed, what is…

A: The question is based on the concept of kinetic energy. the amount of energy possessed by a molecule…

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 748.0 mg sample…

A:

Q: A 1445 kg car is traveling down the road at 96.6 km/h. While traveling at this rate of speed, what…

A: Given : Mass of car = 1445 kg Speed of car = 96.6 km/hr  To calculate :- Kinetic energy (in kJ)

Q: An amount of food is burned and releases 6800.0 calories of energy. What mass of water can be heated…

A: The amount of heat transferred in a system is calculated as follows,…

Q: When 1 mole of HCI(g) reacts with NH3(g) to form NH CI(s) according to the following equation, 176…

A: We have to predict nature of reaction and q value.

Q: Find the kinetic energy of the ball.

A: Given :- mass of ball (m) = 23.44 kg                speed of ball (v) = 2.55 m/s  To calculate :-…

Q: Enter your answer in scientific n

A:

Q: A person uses 494.9 kcal of energy to run a race. Convert the energy used for the race to the…

A: In nutritional terms, the calorie with a capital 'C' is actually a kilocalorie. Therefore, 1 Calorie…

Q: A certain physical process requires 36.00 kilojoules (kJ) of heat.  Convert this quantity to…

A: Given : Energy in KJ = 36.00 KJ

Q: took 1217 J to raise the temperature of a sample of water from 12.7 °C to 27.5 °C. onvert 1217 J to…

A: One calorie = 4.184 joule

Q: When a 0.67-g sample of olive oil is burned in a calorimeter, the heat released increases the…

A:

Q: Suppose you can climb stairs at a rate of 101 steps/min, which typically burns calories at a rate of…

A:

Q: A sample of mercury at 14.0°C is warmed to 128.0°C when 795 cal of heat is added. What is the mass…

A: Amount of heat,Q required to change the temperature of a substance of mass ,m and specific heat…

Q: A piece of parmesan cheese is burned in a soda can calorimeter, and heats up 0.235 kg of water by…

A:

Q: Be sure to answer all parts. What is the change in internal energy (in J) of a system that releases…

A: 1) Given :-  Work done = 9.50×102(cal)  Heat release = 675 J  Change in internal energy = ∆U = ?…

Q: Decide how the objects in the following table would be listed, if they were listed in order of…

A: Due to technical error ,unable to provide you the solution. Please resubmit the question once again

Q: 6 kWhkWh to joules Express your answer using two significant figures.   Convert 229 cal to…

A: In this question, we need to convert the given value from one unit to another unit using the…