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How many moles of HF (Ka = 6.8 10-4) must be present in 0.165 L to form a solution with a pH of 2.25?
If double the amount of KOH was added to 100. g of water, what would happen to the temperature change
What is the ratio of the conjugate base concentration to the acid concentration, that is, [B- ]/[HB] when the indicator switches to the acidic color
1450 mmhg and 286k a skin diver exhales a 207ml bubble of air that si 77 n2 17 o26 co2 by volume.how many mole of n2
1In a hydrogen fuel cell, hydrogen gas and oxygen gas are combined to form water. Write the balanced chemical equation describing this reaction (using lowest whole-number coefficients).
The standard heat of formation of WO3(s) is -843 KJ/mol, and its standard molar entropy
theoretically feasible in a solution that initially 0.250 M in each ion? c.) If separation is feasibe in eithee (a) or (b), what ranfe of anode potential (vs. SCE) should be used?
What is the length of the trapped air column in the short arm when the long arm is filled with mercury. Neglect the curvature of the closed end.
Draw resonance structures for 9-(hydroxymethyl)anthracene. Is it possible for all three rings to simultaneously have bensenoid
A 2.04 g lead weight, initially at 10.0 Celcius, is submerged in 7.96g of water at 52.9 Celcius in an insulated container. What is the final temperature of both substances at thermal equilibrium
Question- Calculate the pH of the cathode compartment solution if the cell emf at 298 K is measured to be 0.650V when [Zn2+]= 0.26M and PH2= 0.96atm.
There are no results for a heat engine cycle is executed with steam in the saturation dome between the pressure limits of 7 and 2 MPa. If heat is supplied to the heat engine at a rate of 150 kJ/s, calculate the maximum power output of this engine ..
A 0.0355 g sample of an unknown molecular compound is dissolved in 1.000 g of liquid camphor at 200.0°C. Upon cooling, the camphor freezes at 157.7°C. Calculate the molar mass of the unknown compound.
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