Calculate the volume of hydrogen produced
calculate the volume of hydrogen produced at 1.50 atm and 19 degress celsius by the reaction of 26.5 g of zince with excess hydrochloric acid according to the balanced equation
Zn(s) + 2HCL(aq)----> ZnCl(aq) + H2(g)
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Calculate the molar mass of a vapor that has a density of 7.535 g/L at 14°C and 743 torr.
Write the full electronic configuration for Sr, He, Zn, Br
A 2.00 l sample of h2 at 70c and 725mmhg is compressed to 1750ml at 1.20atm what is the new temp? Calculate the c temperature at which 43.0g of oxygen occupies 1300. ml at 860 torr
A 330 mL container holds 0.146 g of Ne and an unknown amount of Ar at 35°C and a total pressure of 626 mmHg. Calculate the moles of Ar present.
What are some possible sources of error that might lead to an erroneous determination of the concentration of the acetic acid.
Find the normal boiling point of a saturated solution of LiF at 100 ? C, assuming it un- dergoes complete dissociation.
How many grams of formic acid, HCOOH, must be added to 0.300 L of 0.110 M sodium formate, HCOONa, to yield a buffer solution with a pH of 4.10? Assume no volume change. Ka of HCOOH = 5.0 10-4.
Determine the freezing point of a solution which contains 0.31 mol of sucrose in 175 g of water. Kf = 1.86°C/m
A gas mixture composed of helium and argon has a density of 0.605g/L at a 741mmHg and 298K. What is the composition of the mixture by volume?
A student mixes 5.0 mL 2.00 x 10-3 M Fe(NO3)3 with 5.0 mL 2.00 x l0-3 M KSCN. She finds that in the equilibrium mixture the concentration of FeSCN2+ is 1.2 x l0-4 M. F
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