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What is the the concentration of each ion present in the solution formed by mixing 3.90 g KCl in 75.0 mL of 0.280 M CaCl2 solution. Assume that the volumes are additive
A buffer is made using 45.0 mL of 0.750 M HC3H5O2 and 55.0 mL of 0.700 M NaC3H5O2.What volume of 0.10 M NaOH must be added to change the pH of the original buffer solution by 2.5%? Ka for this acid is 1.3 x 10
airbags contain a mixture of sodium azide potassium nitrate and silicon dioxide. a sensor detects a head on collision
If the average Bohr radius in the n=1 orbit 3.25x10^-8m, what is the wavelength of the standing electron wave
Write the reaction under study and explain why menthone is a good target molecule of the peppermint oil.
if 2.0 g of lithium metal reacts with 3.0 l of chlorine gas at stp what mass of lithium chloride is
Magnesium oxide (MgO) forms when the metal burns in air. (a) If 1.25 g of MgO contains 0.754 g of Mg, what is the mass ratio of magnesium to oxide
The acid solution gives no precipitate when treated with 0.1 M AgNO3. Identify the components of the solid. EXPLAIN.
HC9H7O4(aq) + H2O(l) image from custom entry toolH3O(aq) + C9H7O4(aq) Two aspirin tablets, each containing .325 g aspirin(along with a nonreactive "binder" to hold the tablet together), are dissolved in 200.0 mL of water. Calculate the pH of the ..
mercury is often used in barometers. this is because tje vapor pressure of mercury is low enough to be ignored and
An unknown mass of each of sand, initially at 24.0, absorbs 1970 of heat. The final temperature is 62.2 degrees C. Find the mass of sand.
How might you use 13C NMR spectroscopy to determine if the brominated product is contaminated with some unreacted starting material (during the bromination of trans-cinnamic acid)
it takes 480. joules amount of energy to increase the temperature of 103.1 grams mercury from 20.0degc to 53.5degc.
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