Q: 1. How much heat is needed to raise the temperature of 125.0 grams of water by 12.0 °c? C AT
A: Q = M*C*∆T Q = heat absorbed. M = mass of the sample. 125g C = specific heat. 4.18 ∆T = change in…
Q: * In nanometres (nmg ***n electron volts je\ itannica, Inc. What are the similarities and…
A: When an atom of any element is subjected to electromagnetic radiation, the electrons tend to absorb…
Q: Given the following information: 2 NH3(g) + 3 N2O(g) → 4 N2(g) + 3 H2O(l) ΔHºrxn =…
A: Solution - According to the question - Given reaction - 2NH3(g) + 3 N2O(g) ---> 4N2(g) + 3H2O(l)…
Q: 30.0 g water heated from the initial temp of 15.0 C to the final temperature of 50.5C. How many…
A: The specific heat is amount of heat per unit mass required to raised the temperature by one degree…
Q: A 152.0 g ball traveling at a speed of 2.30 m/s has a kinetic energy of Answr J
A: The kinetic energy of the ball is given by: where m = mass of the ball = 152.0 g v = velocity of…
Q: How many calories are in 3.25x109 J?
A:
Q: The specific heat of urea is 1.339J/g C. If one adds 60.0 J of heat to 10.0 g of urea at 20 C, what…
A: The mathematical relation that relates the added heat and temperature change is: Q=mc∆T
Q: What is the specific heat of a substance in kJ/kg K that absorbs 2500 joules of heat when a sample…
A:
Q: What is the specific heat of a piece of metal (in J/g°C) if 55.00 g of the metal releases 272 J of…
A: Q = m . s . (T1 - T2) Where, Q = heat released in J m = Mass of metal in g s = specific heat of…
Q: A coffee-cup calorimeter contains 70 mL of water with an initial temperature of 24.9°C. An unknown…
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Q: A coffee-cup calorimeter contains 50 mL of water with an initial temperature of 24.8°C. An unknown…
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Q: 1. What is the final temperature when the 625 g of water at 75.0°C loses 7.96 x10^4 J?
A:
Q: Sodium (Na) metal undergoes a chemical reaction with chlorine (Cl) gas to yield sodium chloride, or…
A: 1 cal = 4.184 J Na + 0.5 Cl2 -----> NaCl + heat Heat released by reaction of 1.00 g of sodium =…
Q: A Nutrition Specialist was asked to choose the best typw of milk for children, So he choose genio…
A: Stoichiometry is a branch of Chemistry that involves the calculations of the masses, volumes, number…
Q: 3. In the equation AHsoln = AHsohute + AHsolvent + AHmix the term AHsolvent is almost exclusively…
A: The formation of solution involves the breakdown of inter-molecular forces between the solute…
Q: When 435 J of heat is added to 3.4 g of olive oil at 21 degrees C, the temperature increases to 85…
A: Given: Mass of olive oil is 3.4 g. Heat transferred is 435 J. The initial temperature is 21° C. The…
Q: What is the specific heat of a substance if 525 calories of energy increase the temperature of 10.0…
A:
Q: When a marble is dropped into a beaker of water, it sinks to the bottom. Which is the best…
A: When a marble is dropped into a beaker of water, it sinks to the bottom. The best explanation for…
Q: What is the temperature in degree Celsius of 2 liters of water at 30 deg.C after 500 calories of…
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Q: What is the enthalpy change when 21.0 g of water is cooled from 34.0°C to 7.40°C? kJ (in significant…
A: 1- We know the water specific heat capacity is 4.184 J/g°C ∆T = ( T2 ) - ( T1 ) ∆T = ( 7.40°C ) -…
Q: 3. If burning 1 gram of cornflake (in a calorimeter) caused the temperature of 23.0°C water (100 mL)…
A: Hii there, As there are multiple question posted. we are answering first question. If you need…
Q: How much heat was absorbed (in J) if a 34.7 g sample of an alloy with a specific heat of 0.458 J/g…
A:
Q: When a 0.67-g sample of olive oil is burned in a calorimeter, the heat released increases the…
A:
Q: 9. (3-step conversion) How many kJ in157.4 cal ?
A: We have to convert cal to KJ
Q: 3. What temperature change in degrees Celsius is produced when 800.0 calories are absorbed by 10.0…
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Q: Calculate the AG°rxn at room temperature using the following information. 2 H2S(g) + 3 O2(g) → 2 SO2…
A: We have given that 2H2S(g) + 3O2(g) → 2SO2(g) + 2H2O(g) Quantity H2S(g) O2(g) SO2(g) H2O(g)…
Q: (8) How many kilocalories are lost when 580-g of water cools from 67°C to 22°C?
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Q: How do you arrive at the answer of number four in this question?
A: Enthalpy or heat of mixing is the energy which get released or get absorbed from a substance when…
Q: When a 0.69-g sample of olive oil is burned in a calorimeter, the heat released increases the…
A: The amount of energy for a particular amount of matter present at specific temperature with specific…
Q: kilocalories to condense 3.5 kg of steam
A: Given : Mass of steam to be condensed = 3.5 Kg = 3500 (since 1 Kg = 1000…
Q: A) A hamburger comtains 409 kilocalories(409 cal). How many kJ is this? B) If a jogger burns 1225 kJ…
A: (a) The conversion of kilocalories into kilojoules is
Q: 5. What is the final temperature after 80.0 calories are absorbed by 10.0 grams of water at 25.0 °c?…
A: The question is based on the concept of specific heat capacity. amount of heat required to raise…
Q: A 0.25 g ice cube is put into a thermos with 20.0 g of 10.0 C water. Answer the…
A: From 2nd Law of thermodynamics, Heat flows from a hot substance to cold water, until the temperature…
Q: Use the following information to answer the next question NaCI(s) + ½ H20(1)HCI(g) + % Na,O(s) AH =…
A: We'll answer the first question since the exact one wasn't specified. Please submit a new question…
Q: how much heat is needed in units of Joules to warm 592.7 g of copper from 25 degree celcius to 86…
A: Specific heat: The heat required by a one mole of a substance to raise the temperature to a 1 degree…
Q: 6. (2-step conversion) How many J in 78.4 kJ ?
A: The amount of energy is = 78.4 kJ The value of this energy in J is =?
Q: What is the kinetic energy of a 147 gram baseball moving at a velocity of 47.2 meters per second?…
A:
Q: Chemistry 오 3. Rank the following compounds from most negative (1) to most positive (5) log of Kow…
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Q: A coffee-cup calorimeter contains 50 of water with an initial temperature of 24.8 degrees * C . An…
A: Specific heat is the amount of heat required to raise the temperature of a substance by one degree…
Q: 6. What was the initial temperature if 20.0g of water absorbs 160 calories and warms to 30.0 c? AT
A:
Q: If the specific heat of Copper is 0.385 J/g x ∘∘C how many J of heat are needed to raise the…
A: Given : Specific heat of copper = 0.385 J.g-1°C-1 Mass of copper block = 200 g Temperature = 55°C…
Q: 2116.16 J of energy is equivalent to how many calories?
A: Given :- 2116.16 J of energy To calculate :- Energy in calorie.
Q: 0. A 1.325 kg sample of Compound Y absorbed 5.65 kJ of heat. If the final temperature is 52.3°C,…
A:
Q: 1. Calculate the potential energy of the motorcycle that weighs 575 g when on steep hill 70 meter…
A: Given - Weight(m) = 575 gram =0.575 kg (1 kg = 1000 gm) Height(H) = 70 m Potential energy (PE) = mgH…
Q: If 14.5 kJ of heat were added to 485 g of liquid water, how much would its temperature increase?…
A: Given: Specific heat of water = 4.18 J/g⋅∘C. Mass of water = 485 g. Heat energy = 14.5 KJ
Q: How many calories are released by 231 grams of iron decreasing in temperature from 294℃ to 65℃?
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Q: How much water can be heated from 23.0°C to 75.0 °C on 2222 cal of energy? Hint: q 1.00 cal/g°C…
A: • The values provided in the question are:- i) Initial temperature of water, T1 = 23.0 °C ii)…
Q: Iron (III) oxide decomposed into iron and oxygen gas, 1.70 X 10^3 kJ of heat was absorbed. How many…
A:
Q: What is the answer in KJ?
A: The enthalpy change for the required reaction : 2C2H4(g) + H2(g)→ C4H10(g) is - 230.2 KJ.
Q: 7. How many calories are absorbed when 250.0 grams of water warm from 20.0 °c to 60.0°c? Q AT
A: Liquid water absorb 1 calorie of energy to increase temperature of 1 g of water by 1 degree Celsius.…
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- (Q21) A piston is filled with 2.13 mL of gas held at a pressure of 3.59 atm. What will the pressure (in atm) be if the piston expands to a volume of 7.45 mL? (3 sf)(c) Octane has a density of 0.692 g/mL at 20°C. How many grams of 0, are required to burn 5.45 gal. of C3H18? 1 gal = 3.79 L.(Q18) A gas sample has a pressure of 512 torr at 2.8 °C. What will the pressure be if the temperature is increased to 40.6 °C? (3 sf)
- (Q54) How many grams of carbon dioxide gas will be dissolved in 769 mL of water at 25°C held at a pressure of 0.882 atm? (3 sf)(Q29) How many grams of solid potassium chlorate (KCIO3) decompose to form solid potassium chloride and 790 mL of oxygen gas at 111 °C and 770 torr? (3 sf)How many Joules are there in 43.3 kcal? (1 cal = 4.184 J)
- Calculate the amount of heat produced when 3.891 L of liquid acetonitrile (C,H,N) is burned in excess oxygen gas at 25°C according to the following thermochemical reaction:Isooctane (C8H18; d = 0.692 g/mL) is used as the fuel during a test of a new automobile engine. How much energy (in kJ) is released by complete combustion of 28.0 gal of isooctane to gases (AH = −5.44 × 10³ kJ/mol)? Enter your answer in scientific notation. I'xn x 10 kJ(Q46) How much heat (in kJ) is released when 43.8 grams of liquid bromine (Br2) is cooled from an initial temperature of 2.9°C to a final temperature of -13.8 °C? (3 sf) Cs liquid = 0.4737 J/g.°C %3D C, solid = 0.2262 J/g.°C Melting point = -7.19°C AHfusion = 10.52 kJ/mol
- How many moles of O2 are needed to burn 1.45 mol of C8H18? Express the amount in moles to three significant digits. The complete combustion of octane, C8H18, a component of gasoline, proceeds as follows: 2C8H18(l)+25O2(g)→16CO2(g)+18H2O(g) Relevant volumetric equivalencies 1 gal = 3.785 L 1 L = 1000 mLHow many calories are in 4601 J ? (1 cal = 4.184 J)One of the principal components of gasoline is octane 10 (C_8H_{18}; MW= 114.23 g/mol). What mass of oxygen gas (O_2; 32.00 g/mol) from the air is consumed in the combustion of 702 g of octane? The unbalanced chemical equation is shown below. * C3H18(1) + 02(g) → CO2(g)+ H20(9)