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A hockey puck is observed to be sliding along a flat frictionless surface at a speed of 49 mm/s. There is no net force acting on the puck. Assuming it doesn't smash into anything, how FAST will the puck be going 2 h later?
Briefly explain why a volumetric pipet with a chipped or broken tip is usually useless,while a buret with a chipped or broken tip can still deliver accurate volumes.
A cylinder containing a mixture of N2 and O2 is taken from the basement to the top of a 50-story building. Assuming that the temperature remains constant, which of the following properties of the gas change during the ascent
Calibration of a glass electrode gave a reading of 126.7 mV with saturated potassium hydrogen tartrate buffer standard (pH = 3.557) and a reading of -202.4 mV with 0.01 m borax buffer standard (pH = 9.139), both measured at 30°C.
Approximate the mass in grams of KCl required per liter of pure water to reduce the vapor pressure of water at 25 degrees Celsius by 5%.
acids how many have (i) more than one chiral center, (ii) an acidic side-chain, (iii) a sulfur atom in the side-chain?
Calculate the change in chemical potential of an ideal gas when its pressure is increased isothermally from 1.8 atm to 29.5 atm at 40 C.
When SbCl3(g) (409.0 grams) and 127.1 grams of Cl2(g) in a 120.0 L reaction vessel at 705.0 °C are allowed to come to equilibrium the mixture contains 1.302 mol of SbCl5(g). What is the equilibrium concentration (mol/L) of Cl2(g)? SbCl3(g)+Cl2(g) ..
The pH of a bicarbonate-carbonic acid buffer is 7.80. Calculate the ratio of the concentration of carbonic acid (H2CO3) to that of the bicarbonate ion (HCO3-).
a metal pellet of 100.0 g at 95.0 ordmc is dropped into 218 g of h2o at 23.8 ordmc. if the metal pellet has a heat
Which of the following accurately describes the change that occurs when liquid water is frozen into an ice cube. A. A physical change B. A chemical change C. Both a physical and chemical change D. Neither a physical nor a chemical change
Show your work in finding the mass of the nitrogen collected, The original sample, which decomposed to produce the nitrogen gas, weighed 0.1198 g. Find the percent nitrogen in the sample
How many grams of diphenyl (C 12H10) must be dissolved in 655 g of benzene to lower the freezing point by 3 .20ºC.
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