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Suppose that in an attempt tp minimize waste a laboratory teaching assistant decided to give each student only 1 ml of each liquid to use to measure density in an experiment;
Estimate the magnitude of the absolute error nad percent error in the measured sample volumes compare those errors to the erors that occur when measuring volumes of approimatley 8 ml as normally done in this experiment. Assume that the graduated cylinder used to measure al of the volumes has a 0.1 ml graduations.
then
Based on you answer you you be more or less confident about your density measurement if you used the smaller sample volume rahter than the normal 8-ml sample volume? Briefly explain
The balloon is designed to continue its ascent to an altitude of 30 km, where it bursts, releasing a package of meteorological instruments that parachute back to Earth.
At a certain temperature the equilbrium constant is 396 K for H2(g) + I2(g) ↔ 2HI(g) , Calculate the the equilbrium constant for 0.5H2(g) + 0.5I2(g) ↔ HI(g)
a gas mixture with a total pressure of 770 mmHg contains each of the following gases at the indicated partial pressures: CO2, 122 mmHg; Ar, 209 mmHg; and O2, 191 mmHg. The mixture also contains helium gas. what is the partial pressure of the heliu..
Gaseous oxides of nitrogen rarely occur as pure substanced, but as equilibrium mixtures of them. One of these equilibrium mixtures is nitrogen dioxide and dinitrogen tetroxide.
If 500 mL of air contains 2 x 1022 particles (atoms and molecules), how many particles do you inhale in one day if you breathe 15000 L of air?
The crossed aldol condensation of acetaldehyde with benzaldehyde is aided by the fact that benzaldehyde bears no α-protons. However, a possible competitive reaction is the “selfcondensation†of two molecules of acetaldehyde.
A typical automobile gets 30 miles per gallon of gas and drives 12,000 miles every year. Assuming that octane (C8H18, density 0.7025 g cm-3) is a principal component of gasoline
Explain how to draw NMR structures for compounds that meet these descriptions: a. C2H60; one singlet b. C3H7Cl; one doublet and one septet c. C4H8Cl20; two triplets d. C4H8O2; one singlet, one triplet, and one quartet Any help would be greatly app..
Electrical energy can be used to separate water into oxygen gas and hydrogen gas. In one such experiment,
What explanation can you give as to why a dilute aqueous solution of PtCl42- is pale yellow to colorless, but a concentrated solution is deep red
how does the structure of an atom determine the atoms emission and absorption spectra.
Draw Lewis structures of the four molecules and/or ions with the formulas given below and figure out which two of these are isoelectronic with each another.
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