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A chemist prepares a sample of hydrogen bromide and finds that it occupies 252 mL at 70C and 464 Torr. What volume would it occupy at 0C at the same pressure?
Explain how much distance is between you and the deer when you come to a stop? What is the maximum speed you could have and still not hit the deer?
The given expression is called a rational expression because both numerator and denominator are polynomials. A rational expression is not defined for those values of the variable that make the denominator 0.
The half-life for the second order reaction of a substance A is 55 seconds when [A]o is 0.84 M. What time is needed for the concentration to decrease to 1/4 of the original value.
The rod is initially at rest and oriented horizontally and then released so that it swings to the bottom. Illustrate what are all the forces acting on the rod?
These are two examples, one specific, and one more general, where you are given y as a function of x, and we want to find what x is in terms of y, so we want to make x the subject of the equation.
What volume of O2 at 684mmHg and 37degree celsius is required to synthesize 22.0 mole of NO2.
Explain how fast would it be moving after it had fallen a distance of 0.010 m? (Assume that the gravitational force is constant over the distance of the fall, and that the star is not rotating.)
Find the radius of a spherical tank that has a volume of 32pie /3 cubic meters. An investment of $10k is worth $24,780 in 2006. Find the 5 year average annual return.
At 25C, H2O2 decomposes according to the following equation. 2H2O2(aq) => 2H2O (l) + O2(g) .55V
What is the molecular formula of a compound with the empirical formula NO¿ and a molar mass of 138.02 grams per mole?
The acid-dissociation constants of phosphoric acid (H3PO4) are Ka1 = 7.5 × 10-3, Ka2 = 6.2 × 10-8, 25) and Ka3 = 4.2 × 10-13 at 25.0 °C.
A flask contains 0.180 of liquid bromine br2, . Determine the number of bromine molecules present in the flask.
Some of the cyclohexane solvent vaporized during the temperature versus time measurement. Will this loss of cyclohexane result in its freezing point being recorded as too high, too low, or unaffected.
Total pressure in kPa 10 seconds after initiation of the reaction if initially there was 88.3kPa of pure N 2 O 5 vapor Enter the total pressure in kPa 10 minutes after initiation of the reaction.
Given the following data table of average bond enthalpies, estimate the ΔH^rxn for the reactions 2H2+O2-- 2H2O. What is the hybridization of xenon in each of your Lewis resonance structures?
Explain the steriochemisty of gyceraldehyde and glycerol, give reasons for absence of anomeric forms in sucrose
Hydrogen gas is contained in a one-liter vessel at "STP"(0 degrees Celsius and 1 Std. Atm.). Flourine gas is contained in a second one-liter vessel at the same conditions of temperature and pressure.
If you have 330 ml of water at 25 degrees and add 110 ml of water at 95 degrees, What is the final temperature of the mixture.
Our quality control department is being moved to a different location and will not be able to handle any projects for a few weeks.
Calculate How many grams of H2O at temperature 25 degree Celsius should be poored on the ice with no water in flask initially.
A calorimeter temperature increased by 0.45 0C after adding 30 joule OF ENERGY TO IT BY ELECTRICAL HEATING and the temperature increased by 7.3 0C when 0.10 grams of HCl is neutralize in the same calorimeter now determine the specific heat of neut..
Fundamentals of chemistry - The conditions under which gases behave most ideally and Under the Bronsted?Lowry definition a base
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