How much water did thomas add
Thomas poured 25 mL of .60 M HCl into a large bottle. He then added enough water so that the new (diluted) concentration was 0.10 M HCl. How much water did Thomas add?
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A 235mL solution is prepared with 41.8 millimoles of an unknown sodium salt of a deprotonated organic acid (NaX). If the solution has a pH of 8.05, what is the pKa of the acid?
The vessel contains 2.00 moles of nitrogen, 2.00 moles of helium, and 5.00 moles of krypton. What is the partial pressure of krypton?
A series cct comprises of L=159mH and R=10ohm and a variable C connected to 5mV sinusoidal supply F=1mHz.what value of capacitance will result in resonance condition and the dynamic impedance,the Q-factor of the tuned cct and the I in each bra
A rectangular intake air duct is 36 in. wide and 24 in. high. It runs for over 300 ft inside a warehouse and is at 50 F, but one end of the duct opens to the outside where outside air can enter the duct.
Calculate an approximate heat of reaction for the combustion of one mole of methane gas (CH4) to form gaseous H2O and CO2. What Volume (in L) of methane is needed to produce 2490 kJ of heat for methane gas.
A 100- lightbulb is placed in a cylinder equipped with a moveable piston. The lightbulb is turned on for 2.0×10-2 hour, and the assembly expands from an initial volume of 0.90 to a final volume of 5.88 against an external pressure of 1.0 .
Octane has a density of 0.692g/mL at 20 C. How many grams of O2 are required to burn 1.00 gal of C8H18?
If 16mm copper cables were replaced with aluminium cables capable of carrying the same current, what is the resistance and dimentions of each cable, and the total weight saving? There are six cables of 160 feet in lenth and 6 cables of 210 fee
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