Why is the Earth generally warmer at the equator than at the poles?

Q: How much heat is needed to warm 700 g of ice from -15 oC to 55 oC? Write the formulas and show your…

A: Heat needed to warm 700 g of ice from -15 oC to 55 oC can be calculated in 3 steps, add these 3…

Q: If 1.10 g of steam at 100.0  C condenses into 38.5 g of water,initially at 27.0  C, in an insulated…

A: Mass of steam = 1.10 g Initial temperature of steam = 100o C Latent heat of vaporisation = 2260 J/g…

Q: Calculate the amount of energy that is lost when 175 grams of water vapor cools from 120oC to 101oC.

A: Given: Mass of water, m =175 g The specific heat capacity of water = 4.184 J/goC The change in…

Q: energy is removed from sample?

A:

Q: A pure sample of Substance S is put into an evacuated flask. The flask is then heated steadily and…

A: In the heating curve , each region specific a particular process.  So first we would specify each…

Q: Melting lead requires 5.25 cal/g. Calculate how many kilojoules are required to melt 1 lb of lead.

A:

Q: 25. Explain the difference between heat and temperature.

A: Heat and temperature both are thermodynamic properties of system.  Heat is form of energy.…

Q: How many kilojoules of heat energy are required to melt 200. g of ice at its freezing point?

A:

Q: The combustion of methane is CH4 + 2O2 → CO2 + 2H2O  ΔH = -802 kJ/mol How much heat is produced…

A: • The given reaction is,    CH4 + 2O2 → CO2 + 2H2O ; ΔH = - 802 kJ/mol      • The values provided…

Q: How much heat energy is lost when 8.00 moles of solid copper at an initial temperature of 300°C is…

A: The molar mass of copper is:- 64.546g/mol So the mass of 8moles of copper will be 516.368g.

Q: 1. How much energy (in kJ) is needed to convert 23.0 grams of ice at-10.0°C to water at 90°C?

A: Let's first divide the entire process into small steps. As per the Hess's law of constant heat…

Q: Two 20.0 g ice cubes at −16.0 ∘C−16.0 ∘C are placed into 215 g of water at 25.0 ∘C. Assuming no…

A: Given, Mass of two ice cubes, mice = 2 (20.0) g = 40.0g Mass of water, mwater = 205 g Initial…

Q: Is there a relationship between the final mass of the marshmallow and an increase in temperature of…

A: The relationship between the mass of burnt marshmallow and the change in the temperature of the…

Q: N2(g) + 3H2(g)2NH3(g) + heat 1) Ammonia (NH3) is added. shift to the left 2) Nitrogen gas (N₂) is…

A:

Q: alculate the amount of energy that is lost when 2500 grams of water cools from 80oC to 24oC.

A: The amount of heat (q) released during a cooling process is given by, q = m.C.∆T where m is the…

Q: How much energy in kilojoules is required to convert 100mL of water at its boiling point from liquid…

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Q: A coffee pot contains 310 grams of water at 100oC. How many calories of heat are required to…

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Q: 23.  Calculate the mass of water in grams that can be heated from 0 oC to 15 oC by the amount of…

A: Specific heat capacity is the amount of heat that is required to rise a temperature of 1 kg…

Q: What is the term for amount of energy required to raise one gram of any substance one degree on the…

A: Specific heat capacity is the term for amount of energy required to raise the heat content of a  one…

Q: Calculate the amount of energy needed to make 600 grams of ice at 0oC become water at 0oC.

A: Latent heat of ice = 80 cal/g Given mass of ice = 600 g

Q: energy is required

A:

Q: How many joules of energy are released when 45.0 g of water cools from 18.0 ºC to 7.0 ºC?

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Q: How much energy must be removed from 14.3 grams of gaseous oxygen in order to decrease the…

A: * Specific heat capacity :-  is the amount of                           heat required to raise…

Q: How much energy is needed to vaporize 75.0 g of diethyl ether (C,H O) at its boiling point (34.6…

A: Given Mass of diethyl ether = 75g ΔHvap = 26.5 kJ/mol

Q: Calculate the amount of energy that is released when 450 grams of water cools from 80oC to 45oC.

A: The amount of heat absorbed (or released) by fixed amount of a substance to change its temperature…

Q: Two 20.0 g ice cubes at −10.0 ∘C are placed into 285 g of water at 25.0 ∘C. Assuming no energy is…

A: Given that, Mass of two ice cubes, mi = 2×20 g = 40 g Initial temperature of ice, Ti, i = -10°C Heat…

Q: c. What volume in liters, measured at 26.0 °C and 724mmHg, of SO2 must react if 2.46 kJ of heat are…

A: Given: Temperature (T) = 26oC = (26 + 273) K = 299 K            Pressure (P) = 724 mm Hg  Since, 760…

Q: If 15.5 J of heat are removed from 14.6 g of mercury (specific heat = 0.142 J/g oC) at 25.0 oC, what…

A: From the formula of specific heat capacity we can determine the final temerature of mercury sample .

Q: How much energy is released when a 50g sample of gaseous ethanol is cooled from 78.4 degrees celsius…

A:

Q: Calculate the amount of heat required to raise the tempature of 20.0g of water from -21.0C to 16 C

A: Given that,  Amount of water m = 20.0 g Change in temperature ∆T= 16°C  -  (-21°C)      = 37 °C Heat…

Q: Consider a container with thick rigid metal walls (i.e, the volume does not change) that is filled…

A: When the air is cooled from room temperature to -78 °C the kinetic of energy of the molecule starts…

Q: Calculate the total energy, in kilojoules, that is needed to turn a 20 g block of ice at 0 degrees C…

A: Total heat required is the sum of heat required in each step.

Q: How many grams of ice are needed to decrease the temperature of 50.0 mL of water by 5.0 degrees…

A: The solution is given below -

Q: How much heat is liberated when 50g of water is cooled from 100 ᵒ C to 20 ᵒ C

A: This can be solved as follows

Q: 4. How many joules are required for each of the following changes? b. melting 12.8 g of ice at 0°C

A:

Q: If 40.0 kJ of energy is absorbed by 500.0 g of water at 10.0 oC, then what is final temperature of…

A: Q = m . s . (T2-T1)

Q: How many joules of energy are needed to change 125.00 g of water from 15.0°C to steam at 100.0°C?

A:

Q: What amount of heat is required to convert 10.9 g of an unknown liquid (MM 83.21 g/mol) at 19.2°C to…

A:

Q: 1. What is the importance of cycling matter? 2. How is matter cycled? 3. What are the different…

A: BIOGEOCHEMICAL CYCLE The words "bio," which refers to the biosphere, "geo," which refers to…

Q: How much energy is need, in joules,  to raise 10.2 grams of ice from -10C to -1C

A: Given: Mass of ice, m = 10.2g Specific heat of ice, c = 2.01J/g°C Temperature change, ΔT = -1°C -…

Q: What amount of heat in Joules is required to raise the temperature 0f 10.0g of aluminum by 15.0…

A: The amount of heat Q required for increasing the temperature of a body of mass m by temperature ∆T…

Q: How much heat must be lost to change 35 grams of gaseous water into ice from 155 ˚C to -65˚C?

A:

Q: Calculate the amount of heat, in calories, that must be added to warm 70.9 g of brick from 19.3 °C…

A:

Q: How much energy is released when 75.3 g of water vapor at 115 °C condense and cool to liquid at 25.0…

A: Given that : Mass of water (m) = 75.3 g Initial temperature = 115°C Final temperature = 25.0 °C The…

Q: In joules, how much heat is released when 36.0 g of Ag cools from 181. to 129.?

A:

Q: what mass of ice at 0 Celcius is needed to cool 150 g of water at 25 C to 0 C?

A:

Q: A heating curve for some substance is shown below. Which of the line segments (I-V) represents…

A: Heating curve : When heat added to substance it undergo phase transitions . graphically…

Q: A 20 g sample of ice at -10 °C is mixed with 100 g water at 80 °C. Calculate the final temperature…

A: Heat required by ice to convert into water at 0 oC = ms(Tf-Ti) + mLf…