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0.394 mol of a solid was dissolved in 340 mL of water at 26.9 oC. After the solid had fully dissolved, the final temperature of the solution was 31.6 oC. What is the molar heat of solution of the substance?
A sprinter set a high school record in track and field, running 200.0 \rm m in 20.7 s. What is the average speed of the sprinter in kilometers per hour
What problems might we see if we increase the energy of the electron beam. And if we reduce the energy of the electron beam.
Write and balance the chemical equation that represents the reaction of aqueous sulfuric acid with aqueous sodium hydroxide
use curved arrows to show the flow of electrons in each step, and note any relevant charges or lone pairs of electrons.
Which one of the following is a buffer solution?
a 25 ml sample containing cu2 gave an instrumentsignal of 23.6 units corrected for a blank. when exactly 0.5 mlof
Problem- The integrated rate law allows chemists to predict the reactant concentration after a certain amount of time, or the time it would take for a certain concentration to be reached.
can someone please help explain why the negative slope of thesolid liquid line in the h2o phase diagram is unique?
a mass of solid aluminum is at its melting point. what is the maximum mass of this sample that can be melted by 120 kj
If sufficient acid is used to react completely with 9.90 grams of Mg, Mg(s) + 2 HCl(aq) ? MgCl2(aq) + H2(g) what volume of hydrogen at STP would be produced?
How many Micromoles of A- and HA are present in the solution. If you now add 3mL of 1M NaOH, will you still have a valid buffer
What is the molarity of the RbOH solution?
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