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If the average speed of an oxygen molecule is 4280 cm/sec at 25C, what is the average speed of carbon dioxide molecule at the same temperature?
How many grams of silver and how many grams of chloride ions are in 1 L of solution?
an archaeological sample contains 0.743g of lead -206 and 2.145g of uranium - 238. Assume that all the lead now present in the rock came from the radioactive decay of the uranium and that no appreciable amounts of other radioactive nuclides are pr..
Oxygen is composed of only one kind of atom and can't be separated into simpler substances. What type of matter is it
Why is it necessary to remove the stopper from a reparatory funnel when liquid is being drained from it through the stopcock
Use the tabulated half-cell potentials below to calculate the equilibrium constant (K) for the following balanced redox reaction at 25°C.
Did the. Temperature oof the water rise or fall when the nh4no3 was added? Explain this in terms of heat ttransfer.
An air bubble initially trapped in the tip of the buret containing the standard NAOH disappears during the titration , how will this affect the reported number of moles in the unknown acid ?
the polarity of a molecule predicted from its bond angles and electronegativities of its component elements
Rank from longest to shortest distance. To rank the items as equivalent, overlap them.
A hypothetical molecule, X-Y, has a dipole moment of 1.90 D and a bond length of 169 pm. Calculate the percent ionic character of this molecule.
which one has the larger standard entropy value at 25C(assume thesame molar amount in the comparison) explain the reason why
In the lower troposphere, ozone is one of the components of photochemical smog. It is generated in air when nitrogen dioxide, formed by the oxidation of nitrogen monoxide from car exhaust, reacts by the following mechanism.
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