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Question:
Calculate the uncertainty, in nm, in the position of an electron with the velocity of 1.00 × 103 m/s (the velocity is the same as in the preceding problem) and the uncertainty in the velocity is 1%. (Two significant figures are plenty.)
you and another student were each given an unknown compound. both samples contained colorless material. you each used
A reaction has activation energy of 125 kJ/mol. At 25 degrees Celsius the rate is 5.0E5 M/s. If the temperature is decreased to 0 degrees with all other things being the same then what is the rate of reaction
Write the equalities and conversion factor to complete the following problems. Use scientific notation and the correct number of significant figures. 6.3 x 10-6 uL=______________L (ten power to the negetive six)
A gas bottle contains 0.650 mol of gas at 730 mm Hg pressure. If the final pressure is 1.15 atm, how many moles of gas were added to the bottle.
A reaction has a theoretical yield of 8.83 g of ammonia. the reaction gives off 10.24 L of ammonia measure at 52*C and 105.3kPa what was the percent yield of the reaction?
Beggining with the absorbance of your unkown brass sample show ur calculations for a) Cu+(2) (aq) concentration; b) mass of Cu in brass; c) percent Cu in brass.
Calculate the empirical formula for the following compound: potassium tartrate found in baking powder: 20.8% K, 2.7% H, 25.5% C, and 51.0% O
Determine the reaction, Fe2O3 + 6 HCl => 2 FeCl3 + 3 H2O. Explain how many moles of H2O will be made from 42.9 grams of HCl
Problem- Why are Para isomers favored over ortho isomers in Electrophilic aromatic substitution
natural gas can be represented by ch4 methane and gasoline can be represented by c8h18 octane. write the chemical
Consider the following reaction at equilibrium: 2CO2(g) 2CO(g) + O2(g) Change in H degree = -514kJ a) increase partial pressure of CO2 at equilibrium
What are the products of the reaction of potassium hydride and water. KH(s) + H2O(l) ? A) K(s) + H2(g) + OH-(aq) B) K(s) + H2(g) + O2(g) C) KOH(s) + O2(g) D) K+(aq) + H2(g) + O2(g) E) K+(aq) + H2(g) + OH-(aq)
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