You have 10.3 g of a colorless liquid. Adding 155.1 J of heat increases the temperature of the liquid from 25.0 °C to 28.6 °C. What is the liquid?

Q: The vapor pressure of water is 15.5 atm at 248.1 K, and the vapor pressure of water is 83.3 atm at…

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Q: Which of the following is true about enthalpy changes when a salt dissolves in water? if the…

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Q: A 500-g piece of metal (a steel) is dropped into 775 mL of water at 23.5 °C. The final temperature…

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Q: The following bar graph shows the starting and highest/lowest temperatures reached for four…

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Q: Fill in the table below. Substance Type of Solid (molecular solid, ionic solid, metallic Type of…

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Q: The specific heat of silicon is 700J/kg/°C, how much energy is needed to raise a 14g of silicon by…

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Q: what is the temperature when 20 grams of salt is added to boiling water

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Q: 100 g of a solution (specific heat of 0.32 J/g C) undergoes a reaction in which 74.84 J of heat is…

A: Mass of solution = 100 g Specific heat = 0.32 J/g oC Heat released = 74.84 J

Q: NaOH Ph EtOH, heat

A: The reactant is an aldehyde. It reacts with a base sodium hydroxide  and subsequently with the…

Q: The temperature of a beaker containing 194 mL (density of water is 1 g/mL) of water changes from 16…

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Q: 11. Given the equation: N₂(g) + 2 O2(g) → 2 NO₂(g), AH = 68 kJ Which of the following is correct?…

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Q: The figure above shows a liquid of diatomic bromine in equilibrium with its vapor. Compare the…

A: A question based on chemical bonding, which is to be accomplished.

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Q: A solution is made by mixing 197.3 g of ethanol initially at 10.5°C with 250.0 g of water initially…

A: We know that, according to the law of conservation of heat energy, energy gained or loss by the…

Q: For this question, you are trying to determine which beaker will have more heat absorbed and why.…

A: Answer:- This question is answered by using the simple concept of calculation of heat absorbed by…

Q: Which change happens when a substance melts? O Heat energy overcomes the forces of attraction…

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Q: Perform the conversions between energy units. 791 kJ=                                             J…

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Q: Calculate the heat lost by a 50.0g piece of copper metal that decreases it's temperature from 45°C…

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Q: A 25.0 g sample of molten iron releases 1230 cal as it cools from 2000 °C to its freezing point,…

A: Iron at 20000C is in its molten state.

Q: Calculate the heat change in kilojoules for freezing 90.0 g of water at 0 degrees Celsius.

A: we have to calculate the heat change for freezing 90.0g water at 0oC

Q: If 1369 J of heat are released when 156 g of silicon cools from 37.5 oC to 2.50 oC, what is the…

A: Amount of heat released = 1369 J Amount of heat released (∆H) -1369 J Negative sign indicates heat…

Q: A 155.0 g piece of copper at 181 oC is dropped into 250.0 g of water at 17.9 oC. (The specific heat…

A: Assuming the final temperature of mixture is T and specific heat of water = 4.184 J/goC Since the…

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Q: -1 R=0.0589 kPa·km -4 Convert R to kJ•m

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A: The process of liquid water forming from water vapor is done by the process which is known as…

Q: Why do pennies turn "gold" upon heating? What happens on their surfaces?

A: Interpretation -  To tell about why do pennies turn "gold" upon heating and tell about what happen…