The rate of solar energy striking Earth averages 168 watts per square meter. The rate of energy radiated from Earth’s surface averages 390 watts per square meter. Comparing these numbers, one might expect that the planet would cool quickly, yet it does not. Why not?

Q: styrofoam cup used instead of a beaker?

A: The molar heat of fusion is quantity of heat required to change 1g of solid to liquid without any…

Q: 11. If we are looking to find alternative fuel sources, what are some criteria they should meet to…

A: Criterion for alternate fuels:- 1. They should be cleaner, i.e. the end products of the Comustion…

Q: Describe the method that engineers use to estimate monthly andannual energy consumption to heat…

A: The method which engineers use to estimate monthly and annual energy consumption to heat buildings…

Q: What ingredients is not needed for a fire?

A: The ceaseless and powerful oxidation or combustion of substance results in the production of heat…

Q: Assume that coal can be approximated as C(s) (again, not a great assumption, but sufficient for this…

A: Let, 2 C(s) + O2(g) → 2 CO(g)                                     Delta H = -222 kJ   Reaction 1…

Q: When hot tea is poured into both a steel cup and a styrofoam cup, the steel cup quickly feels hot to…

A: Since metal is a good conductor of heat due to free electrons in the metal.

Q: In order to produce 980 kJ of heat, how many grams of H2 must burn? H2O) + 250 kJ H2g) + O 0.54 g…

A: 1- First we will determine the moles of H2 gas :  According to the chemical reaction equation,…

Q: 1. Enumerate the classification of fires. Briefly discuss each.

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: 1. Relating Heat, Temperature Change, and Heat Capacity a. Large beds of rocks are used in some…

A: Given  (a)     Mass of Rocks ( m ) = 50 kg                                           = 50 × 103 gram…

Q: When the air hole in a Bunsen burner is opened a. the gas burns efficiently, producing a relatively…

A: In the given question we have to choose the correct option for the given statement. As we know that,…

Q: what are some drawbacks to hydroelectric power?

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Q: air conditioning in the plant stops working, nroduce

A: In this question, I have to tell us that when we turn off the conditioner, what is the effect on the…

Q: Public water systems often add fluoride to drinking water because, in the proper amounts, fluoride…

A: a) Given in the question, Annual average of maximum daily air temperature = 17.8 - 21.4 For this…

Q: Most people find waterbeds uncomfortable unless the water (specific heat of 4.184 J/g °C)…

A: Volume = 622L Initial temperature = 85°F Final temperature = 61°F Specific heat of water = 4.184…

Q: Which fuel is not a fossil fuel?a) coal b) hydrogenc) natural gas d) petroleum

A: According to the law of conservation of energy, the energy can be converted from one form to another…

Q: Define fire

A: Fire is used for numerous purposes all over the world. It is very useful to humankind but it is also…

Q: Why was natural gas flared-off (burning) and not considered a source of energy, a few decades ago?

A: Flare off means to burn something and allow it to go into the atmosphere. It consists of methane,…

Q: Gaseous fuels behave differently from liquid and solid fuels. Make 10 sentences to specifying these…

A: The substances which upon burning produce heat and energy are known as fuels. Depending upon the…

Q: Why water has a very high specific heat capacity in comparison to other metals ? Please give a few…

A: Heat capacity:  Heat capacity : This property of a substance is defined the maximum heat that the…

Q: The density of SIO2 is 2.20 g/cm3. The density of elemental silicon is 2.33 g/cm3. How much volume…

A: Density ( d ) is the ratio of mass of the substance ( m )  to its volume ( V ) . i.e  density (d) =…

Q: Question 11 of 15 > Two substances at different temperatures are brought together and allowed to…

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Q: Why does hammering a piece of sheet metal cause the metal to heat up?

A: Metal are the substance which allows to pass current through them. Metals are good conductor of…

Q: Write the two balanced chemical reactions for: a. Copper (II) oxide reacting with methane under high…

A: Given,  a). Copper (II) oxide reacting with methane under high heat b). Copper (I) oxide reacting…

Q: How does an energy storage device which provides instantaneous power supply work? Explain with a…

A: Now a days uses of batteries increased  a lot of amount. From household to industrial purpose,its…

Q: At 15 C, 37.8 grams of oxygen gas creates a pressure of 500 mmHg, what is the volume of the gas?

A: Given:  P  = 500 mmHg n = no.of moles = 37.8g T = (273 + 15 C) = 288K . R = gas constant = 0.08206…

Q: Which of the following materials are best suited to make cookware such as pans and pots?   Wood…

A: Heat capacity is amount of heat required to raise temperature of substance by one degree Celsius. So…

Q: 20.0 grams of water at 85ºC is added to 35.0 grams of water at 10.0ºC in an insulated container.…

A:

Q: How much heat is needed to heat up 36 kg of hydrogen gas from 12.0C to 48.0C?

A: The specific heat capacity for a given chemical substance or a solution refers to the amount of the…

Q: certain mass of substance 10 releases 3.19 kJ of energy.  If the initial temperature was 91.8  and…

A: q = mc∆T  q is the heat ,m is the mass, c is the specific heat, ∆T = Change in temperature  q =…

Q: What mass of methane (CH4) combusts if 333 kJ of energy is released? Normally, 890 kJ of energy is…

A: Applying mole concept.

Q: Both coal and natural gas can be burned to generate electricity. However, burning natural gas…

A: As now we are moving towards the more efficient sources of energy and also take care that it should…

Q: Using your knowledge of the effects of temperature on gas solubility, explain why elevated water…

A: To survive fish inside the water , dissolved oxygen gas is required. Fishes take oxygen from water…

Q: Which of the following is true about the Second Law of Thermodynamics: energy is always conserved…

A: "Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Which of the following factors affects the speed at which a candle burns? a) air temperature b) type…

A: Speed of candle depends upon type of candle.

Q: A balloon is inflated from 0.0100 L to 0.700 L against an external pressure of 10.00 atm. How much…

A: Since work done by the surrounding is given by  w = PextΔV where ΔV = change in volume = final…

Q: Welding utilizes a variety of fuels. Two such fuels identified for comparison are acetylene (ethyne…

A: Answer: Amount of energy released during the combustion of 1g of fuel is called as its calorific…

Q: When you put the iron cube in the olive oil and the brick cube in the water what loses heat more…

A: Heat capacity is the quantity of heat required to increase the temperature of an object or a…

Q: 14. Which type of energy is not considered an evolving source of energy? wind biogas ethanol O…

A: Interpretation -  To tell about which type of energy is not considered an evolving source of energy…

Q: Maine during its cold winter months differs from the fuel used in Arizona during hot summer months.…

A: Ans. Different grades of motor gasoline, the formulation of gasoline may differ depending on the…

Q: 5. If you left equal masses of iron and water out in the sun on a hot day, which one would be hotter…

A: Here we are required to find the substance which will become hotter after heating for 15 min

Q: Calculate how much energy would be needed for 64.8 g titanium at 19.4 oC to reach 582 degrees…

A: The Heat energy can be calculate as: ∆Q = m × C × ∆T Specific heat of titanium = 521 J/kg K ∆T = 855…

Q: In what parts of the U.S. is geothermal energy prominent?

A: Geothermal energy is a type of renewable energy taken from the Earth's core. It comes from heat…

Q: List out various types of Geothermal resources?

A: Geothermal energy comes from the heat within the earth. The word geothermal can be divided into two…

Q: Place about 3 mL of hydrochloric acid in a test tube. Then add a strip of magnesium to it. At the…

A: To find  The chemical reaction which occurred In terms of heat exchange, what will be the reaction?

Q: Explain Energy crisis and its remedy from various resources in detail.

A: Crisis is a situation where there is a huge difference between demand and supply.  So, a situation…

Q: 41. If 2 moles of diatomic gas kept at a volume of 20 liters and is compressed from 2 atmospheres of…

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Q: List the five classes of fires.

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Q: Why does the lit splint extinguish when it approaches a beaker filled with dry ice. Hint: What two…

A: