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Compute the number of moles of a gas that is present in a 7.55-L container at 45 degrees, if the gas exerts a pressure of 725 mm Hg.
Calculate the molarity of each of the following solutions. Part A - 0.14mol of LiNO3 in 6.0L of solution.
if 100 mL of 0.800 M Na2SO4 is added to 200 mL of 1.20 M NaCl, what is the concentration of Na ions in the final solution?
A sample of ammonia, NH3, contains 3.3 x 1021 hydrogen atoms. How many moles of nitrogen atoms are in this sample
Silver metal crystallizes in a face centered cubic unit cell. The edge of the unit cell has a length of d = 407pm. What is the radius in picometers of a silver atom
Prepare a model of 3-penten-2-one. Are stererisomers possible here. Explain. Are any of these chiral. This system is said to be conjugated. Why.
a 155ml volume of oxygen gas is collected over water at 23 degrees celsius and a barometric pressure of 770mm. the gas weighs 0.185 grams. what is the pressure of the dry gas?
Why is it that when you look into any type of light for a long period of time that blotches of black appear when you look away
MAPH loses H2O stepwise as it is heated. Between 40 C and 60 C the monohydrate(MAPH) is formed and above 100 C the anhydrous material(MAPH) is formed. What are the Phosphorous % of the monohydrate and anhydrous material
Assume that the liquid is an ideal solution and apply Raoult's law to find the following. What is the temperature of the liquid
Calculate the energies of the following waves (in kilojoules per mole), and tell which memeber of each pair has the higher value. A) An FM radio wave at 99.5 MHZ and an AM radio wave at 1050 kHZ
What is the number of moles of an ideal gas, if the volume is 67 mL, the pressure is 716 mmHg and the temperature is 34 0C?
If a sample solution is 5.00% H2O2 by mass and has a density close to 1.0 g/mL, find the approximate molar concentration of the H2O2 in the solution
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