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Three portions of the same liquid are mixed in a container that prevents the exchange of heat with the environment. Portion A has a mass m and a temperature of 99.0°C, portion B also has a mass m but a temperature of 78.6°C, and portion C has a mass mC and a temperature of 36.0°C. What must be the mass of portion C so that the final temperature Tf of the three-portion mixture is Tf = 46.0°C? Express your answer in terms of m.
A 15.00 mL sample of a 0.100 M solution of lead(II) nitrate is reacted with 10.00 mL of 0.170 M sodium chloride. How many grams of lead(II)
give examples of different oxides and halides that the 1st row d block metals can form. which ones can form more than 1
when answering include an explanation balanced chemical equations andor calculations where appropriate.what volume of
What is the heat absorbed by the calorimeter cup, qcup. What is the heat change for the neutralization reaction, qrxn
What is the pH of a phosphate solution made by the addition of 2.5 equivalents to an initial solution of phosphoric acid. The three pKa values of phosphate
Which best describes a solid?
Why is there a general increase in the first ionisation energies of the Period 3 elements Na to Ar. Can someone explain this to me.
what tempreture must 0.040 moles of water vapor be heated in a 500ml flask before the pressure in the flask becomes 2 atm.
the reaction of magnesium metal with hcl yields hydrogen gas and magnesium chloride. what is the volume in liters of
Calculate the weight of KMnO 4 contained in 2 liters of a 0.15N (not M) solution
A solution containing 10.0 mmol CaCl2 is diluted to 1 L. Calculate the number of grams of CaCl2 . 2H2O per milliliter of the final solution.
Draw the amine from the following: A Hofmann degradation of a primary amine forms an alkene that gives butanal
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