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A sample of 0.0500 mol of ammonia (NH3) gas had a volume of 235. mL.The temperature andpressure were held constant and some ammonia was removed from the sample. Its new volumewas 175 mL. How many grams of ammonia were removed
A student evaporated 100.0 mL of a saturated TlCl solution and found the solid TlCl she recovered weighed
Write a balanced reaction for the complete combustion of ethanol (C2H5OH) in oxygen, using the smallest integer coefficients. Then add up the total of all of the coefficients from both sides of your equation and enter that number as your answer.
What is the difference between Sn1 and SN2 reactions in organic chemistry?
Compute the resolution for a 1115.5 keV Zn peak that has a FWHM of 2.01 keV. Compute the resolution for 1115.5 keV Zn peak that has a FWHM of 200 keV. Which of these peaks would have appeared on a spectrum taken with an HPGe detector
When making an alcoholic beverage, such as beer and wine, Brix is a measurement used to assess the amount of sugar present in the fermentation matrix or grape juice.
When 1.0 g of snack cake is combusted in a constant-pressure bomb calorimeter with a heat capacity (including its water) of 10.0 kJ/°C, the temperature of the calorimeter rises by 2.24°C. How many nutritional calories (Calories) are in one serving..
A hard water sample contains 0.0085% Ca by mass (in the form of Ca2+ ions). What mass of water contains 1.2 g of Ca
Find the mathematical relationship that relates energy of a photon emitted as an electron relaxes from a higher energy level to a lower energy level in a hydrogen atom. Use this equation to calculate the wavelength of the photon emitted in units o..
when sodium is heated a yellow spectral line whose energy is 3.37x1019 jphoton is produced. what is the frequency and
find the velocity of an electron emitted by a metal whose threshold frequency is 2.15times1014 rm s-1 when it is
A student titrated a 15.00mL sample of a solution containing a monoprotic weak acid with NaOH. If the titration required 13.36mL of 0.1015M NaOH to reach the equivalence point, calculate
Determine the bond order of each and classify it as stable or non-stable. If stable, tell whether the species is paramagnetic or diamagnetic.
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