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In my organic lab we extracted spinach pigments through grinding the leaves as well as adding dichloromethane to the leaves. Then we vacuum filtered the mixture as well as poured the filtrate into a sepratory funnel. Explain we then added water as well as it separated into two layer and we drained the bottom layer. Explain what is the purpose of adding water to the sepratory funnel.
Consider 4.30 L of a gas at 365mmHG and 20 C. . If the container is compressed to 2.70L and the temperature is increased to 31 C, what is the new pressure,P2 , inside the container? Assume no change in the amount of gas inside the cylinder.
Metallic COpper is formed when aluminum reacts with copper(ii) sullfat. How many grams of metallic copper can be obtained when 54.0 G 0f Al react with 319 G of CuSO4?
iF 0.80g of a gas occupies 295 mL at 25 degrees Celcius and 680 mm Hg of pressure, what is the molar mass of the gas.
Water originally at -10 deg. celsius and 0.30 atm is heated at constant temperature until the temperature is 80.0 degrees celsius
The reaction CH3CH2NO2 + OH- → H2O + CH3CHNO2- obeys the rate law d[A]/dt = -k[A][OH-], where A denotes CH3CH2NO2. It takes 0.5 min for one percent of the A to react at 25°C.
A 0.150-mole quantity of NiCl2 is added to a liter of 1.20 M NH3 solution. What is the concentration of Ni2 ions at equilibrium. Assume the formation constant* of Ni(NH3)62 is 5.5 × 108.
The solubility product constant of Sr(IO3)2 is 1.14 × 10?7. What volume of 0.0485 M S2O32 is required to titrate a 15.0 mL sample of a saturated solution Sr(IO3)2
Two moles of potassium chloride and three moles of oxygen are produced from the decomposition of two moles of potassium chlorate, KClO3(s). Write the balanced equation. How many moles of oxygen are produced from 12 moles of potassium chlorate?
Calculate q, w, ?E, and ?H for the process in which 80.0 g of nitrous oxide gas (N2O) is cooled from 162°C to 53°C at constant pressure of 5.00 atm. (See Table 9.1.) N2O Cv J/K mol = 30.38 Cp J/K mol = 38.70
What is the minimum volume of dripping water saturated with calcium carbonate that would be required to form a small stalactite that had a mass of 1.000 kg?
The alcohol (ethyl alcohol) content of the bottle of beer in a 12 oz is about 5%. Identify the substance produced in the liver that helps catalyze this reaction.
a sample of gas occupies 15.0 liters at a pressure of 2.0 atmospheres and a temperatures of 300 k. if the pressure is
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