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Which of the following molecules or ions will have a lewis structure most like that of phosphorous trichlorid, PCl3? a) ClO3- b) SO3 c) (CO3)2- d) BF3
Excitation of the 3s electron from Mg+ to a 3p orbital occurs at 280.0 nm. The probability of filling a 3p orbital relative to the 3s orbital is 3/1. Assuming that the total Mg+ population in a given atomization source is 3.5 x 10^18 ions at any g..
a 93 L sample of dry air cools from 145 degrees C to -22 degrees C while the pressure is maintained at 2.85 atm. what is the final pressure?
The concentrations of lead in blood samples are often reported in units of micromoles of lead per liter of blood. Calculate the value of the concentration in these units of a blood sample containing 45 ppb lead.
Calculate the Root Mean Square Speed and its average kinetic energy per molecule of Nitrogen and water vapor
a) What is the structure of biacetyl? b) Indicate the hybridization of each carbon atom. c) How many pi bonds are present? d) Do the four carbon atoms lie in a plane or do they lie in a straight line?
For your cereal sample, you added the same volume of sodium acetate that you added to your standards and solution unknown.
What mass of this substance must evaporate in order to freeze 250 of water initially at 25? (The heat of fusion of water is 334 the specific heat of water is 4.18 .)
The minerals chalcocite (Cu2S) and malachite (Cu2CO3(OH)2) are two primary sources of copper. What is the oxidation state of copper in each of these minerals?
What is the change in the volume of the balloon as it ascends to 7000ft?
The active catalyst in this experiment was generated from the redox reaction of chloroplatinic acid with sodium borohydride. What is the active catalyst?
Perform a degree of freedom analysis and show that all of the unknowns can be solved.
Zinc is used to make galvanized iron pipes. these pipes are protected from the rust reactions that would normally occur. Which statement best explains why zinc is used.
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