Electrical energy is measured in kilowatt hours, kWH. A watt is 1 joule per second, a kilowatt is 1000 joules per second. An hour has 3600 seconds, therefore 1kWh=3.6x10^6 joules. How many kWh are there in a meal that is 437 Cal?

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A: Given that 7 tons of CO2 emits from Honda Accord per year. 1 ton = 2000 pounds 1 tree absorb 30…

Q: The average adult human burns 2.00 × 10³ kcal per day in energy. What is this rate in kJ per hour?

A: The unit conversions are  1 kcal = 4.184 kJ To convert kcal into kJ , we need to multiply kcal with…

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A: The answer is given below

Q: Electrical energy is usually measured in kilowatt-hours, kWh. A Watt is 1 joule per second. A…

A: Ans.    1 Cal = 4.184 joules   776 Cal =776×4.184 joules                =3246.784 joules      Now…

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A: Given that: Radius of copper atom=1.3×10−10m

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A: According to the rule of conversion of the unit, 1 cal is equal to 4.184 J So, (1×103) cal is equal…

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A:

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A: "Since there are multiple sub-parts in this question so I am solving only the first three sub-parts.…

Q: Two solid objects, A and B, are both at room temperature and then placed in boiling water. The…

A: Heat capacity - it is the amount of heat required to change the temperature by 1 Degree.

Q: Two solid objects, A and B, are both at room temperature and then placed in boiling water. The…

A: Heat capacity is the amount of energy in the form of heat,  takes for increasing the temperature of…

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A: Amount of the car fuel can be calculated as given below:

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A: The mass of sulfuric acid has to be given. Density: A measurement of mass per unit volume.

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A:

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A:

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A: Given, density of water =0.998 gmLvolume of water in calorimeter filled =104.6 mLwe are asked to…

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A:

Q: What is 393.83 kJ/mol rounded to three significant figures?

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Q: 2.96×104 J  to Cal Express the value in Calories to three significant figures.

A: We know that, 1 Cal = 4.184 J  1 J = 1/4.184 Cal

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A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: what is the mass of calcium carbonate reacted?

A: Given, Mass of marble before reaction 3.0g Mass of marble after reaction 1.8g

Q: The average adult human burns 2.00 × 10³ kcal per day in energy. What is this rate in kJ per hour?

A: Given, energy burns by human in a day=2×103 kcal  In a day, there are 24 hours.  In 1 hour,energy…

Q: Two solid objects, A and B, are both at room temperature and then placed in boiling water. The…

A: Heat capacity is amount of heat required by the object to change its temperature by degree 1.

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A:

Q: The energy available from the world’s total petroleum reserveis estimated at 2.0 3 1022 J. Convert…

A: The energy available from the world’s total petroleum reserve is estimated at 2.0 X 1022 J. Convert…

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A: (a)Volume of water (in Liters) is calculated as follows,

Q: The average adult human burns 2.00 × 10° kcal per day in energy. What is this rate in kJ per hour ?

A: Given: Energy= 2.00×103 To find: The rate of energy in kJ per hour

Q: The pretzels in a bag of pretzels have a mass of 238.5g and costs $1.49. There are 18 pretzels in…

A: mass of pretzel bag = 238.5 gCost of pretzel bag   = $ 1.49No of pretzels in 1 bag = 18

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Q: -H,0 10 g C,H1,06

A: Dear student I have given answer to your question in the image format.

Q: convert 531 J to calories

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A: Given: Mass of CO2 = 4.57 X 106 metric tons.

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A: Given : distance between layers in pm = 568 pm

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Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.