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We dissolve 2.45g of sugar in 200.0g of water. What is the mass percent of sugar in the solution?
Calculate the partial pressure of water at 23.6 Celsius by interpolation from the vapor pressure table.
why is a solution containing dissolved brass made basic with concentrated NH3 and again with acidified CH3COOH?
10M NaF solution is slowly added with stirring, to a solution that contains 10M Ca(NO3)2 and 10M Cr(NO3)3 .Which salt CaF2 - or - CrF3 precipitates first? The Ksp for CaF2 = 5.3x10^-9 & Ksp for CrF3 = 6.6x10^-11
A 20.0-mL sample of this glucose solution was diluted to 0.500 L . How many grams of glucose are in 100. of the final solution
Kp for the reaction of SO2(g) with O2 to produce SO3(g) is 3 × 1024 . Calculate Kc for this equilibrium at 25ºC. (The relevant reaction is 2SO2(g) + O2(g) 2SO3(g).)
when 25.0 ml of 0.500m h2so4 is added to 25.0ml of 1.00m koh in a coffee cup calorimeter at 23.5 degrees cel the
At 0.0oC, if the volume of air is 2.9 mL and the pressure of the atmosphere that day is 675 mmHg, what is the number of moles of air?
derive the clayperon equation. what is the primary use in phase diagrams? can you use it to justify the relative slopes
After allowing circulatory equilibrium to be established, a 0.20-mL sample of blood is found to have an activity of 20. counts per second. Calculate the blood volume of the animal.
The KOH solution standardized is used to titrate a 20.00ml sample of sulfuric acid (H2SO4) solution of unknown concentration. Determine [H2SO4] for the unknown acid solution if 41.27mL of the NaOH solution is needed to fully react with it.
When 24 copper pennies are submerged in water, the pennies displace 8.26 cm3 of water. If the combined mass of the pennies is 73.86 g, what is the density of copper?
calculate the molar concentration of O2 in the surface water of a mountain lake saturated with air at 20°C and an atmospheric pressure of 622 torr
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