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Liquid helium at 4.2 K has a density of 0.147 g/mL. Suppose that a 2.50-L metal bottle that contains air at 105K and 2.0 atm pressure is sealed off. If we inject 120.0 mL of liquid helium and allow the entire system to warm to room temperature (25°C), what is the pressure inside the bottle?
Place palmitic acid at the middle position. Cis/trans isometry is graded -it may help to draw hydrogen atoms associated with the carbon atoms of the double bond.
Does this verify that only a single detergent compound is in the extract. What specifically can you do to gain more information about the composition of the shampoo extract
A mixture formed by adding 40.0 mL of 2.5×10-2 M HCl to 120 mL of 1.0×10-2 M HI. What is the pH of the strong acid solution?
The Henry's Law constant for CH3Br gas in water at 25 oC is 0.159 mol/L-atm. Calculate the solubility of CH3Br in water at 25 oC in moles/L if the partial pressure of CH3Br in the headspace above a water sample is 1.71 atm.
This method assumes that no argon was trapped in the rock when it was formed frothe molten material. A meteorite was found to have equal amounts of 40K and 40Ar. a) Of the potassium-40 that was originally present, what fraction has decayed? b) how..
In an electrolysis experiment such as the one you will perform, 1.76 x 10^-3 moles of hydrogen gas were collected, and the metal electrode lost 0.1983 g. The equivalent mass of the metal is approximately what?
How many moles of sodium acetate must be added to 1.8 L of 0.25 M acetic acid to give a solution that has a pH equal to 4.68? Ignore the volume change due to the addition of sodium acetate.
What is the molecular formula for a substance that contains in 1.00 mole of sample 1.00 mole of S, 24.1 x 10 to the 23rd atoms of F, and 71.0 grams of Cl
What weight of sodium formate must be added to 400mL of 1M formic acid to produce a buffer solution that has a pH of 3.50
Commercial grade hcl are typically 39% by mass HCL in water. determine mole fraction of HCL has solution has density
identify the following as characteristic of a solution, colloid, or suspension: a)particles of this mixture remain inside a semipermiable membrane, but pass through filters. b)the particles of solute in this mixture are very large and visible.
A 750-mL sample of nitrogen was collected by displacement of water from a container at 30°C and an atmospheric pressure of 742 Torr. If the vapor pressure of water at 30°C is 31.8 Torr, calculate the number of moles of nitrogen gas produced.
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