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You design an experiment to test how the volume of a gas affects the pressure. You change the volume by testing these variations: 1 L, 2 L, and 3 L of gas. You measure and record the pressure for each trial.
a) What is the independent variable in your experiment?
b) What is the dependent variable in your experiment?
c) What are two controls you should set for your experiment?
An ore containing 24% solid inert and 76 mol% iron pyrites (FeS2) is roasted in the presence of dry air at 500 °C and 1 atm. Considering the given reactions.
a 10g sample of acetic acid hc2h3o2. was burned in a bomb calorimeter in an excess of oxygen. the temperature of the
Considering the limiting reactant concept, how many moles of C are produced from the reaction of 2.00 mol A and 4.50 mol B?
What will be the experimental enthalpy of reaction when 0.5000g of zinc reacts with 20.00mL of 1.500M HCl, changing the temperatrure of the solution
1.how doesthe density ofa gasdepend on temperature?pressure? how doesit depend on the molar massof the gas?2.what is
The inlet velocity to and the outlet velocity from the scrubber are 25 ft/s and 20 ft/s, respectively. The scrubber cools the flue gas to 5500F. Determine the duct size required at the outlet of the unit.
a cylinder measuring wide and high is filled with gas and the piston pushed down with a steady force. calculate the
Consider the halide ions as nucleophiles. Briefly explain why F-, the strongest base among the halide ions, is the best nucleophile in polar aprotic solvents while iodide, the weakest base, is the best in protic solvents.
the Pyranose form of Fructose is much sweeter than the Furanose form, Sweetness in honey decreases as temperature rises
For 2.25 moles of an ideal gas, Pext=P=200x10^3 Pa. The temperature is changed from 122 C to 28.5C and Cv=3R/2. Calculate the q, w, delta U and delta H for an isochloric process.
A 250.0 mL sample of chlorine gas is collected when the barometric pressure is 798 mmHg. What is the volume of the sample after the barometric pressure dropped to 745 mmHg?
The solubility product constant at 25 C for AgI(s) in water has the value 8.3x 10-17. Calculate Delta G rxn at 25 C for the process AgI (s) --> Ag+ (aq) + I- (aq) where (Ag+)= 9.1 x 10 -9 and (I) = 9.1x10-9
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