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What is the symbol of a period 3 element that forms a +1 cation? Write the symbol of an ion from group 7A with 10 electrons. What is the symbol of a cation from group 2A with 54 electrons.
A weather ballon is filled with helium to a volume of 305L at 28 degree celcius and 751 mmHg . The ballon ascends to and altitude where the pressure is 504 mmHg and temperature
Which of the following would you expect to be a molecule and which would you expect to be part of an ionic solid. Drag the appropriate compounds to their respective bins. CO, NO, LiCl, HBr, BaS, RbCl, SrO, LiBr
The freezing point of ethanol (C2H5OH) is -114.6 degrees C and the molal freezing point depression constant for ethanol is 2.00 degrees C kg mol-1. What is the freezing point (in C) of a solution prepared by dissolving 57 g of glycerin (C3H8O3) in..
How many moles of hydrofluoric acid (ka=6.8e-4) must be added to 500 ml of .10M sodium fluoride to give a buffer of pH 3.20
find the empirical formula for the following compounds given the following information.find the empirical formula for
Dissolve 1.69 g Oleum all H2SO4.3SO3 formula to balance water. Neutralize the solution obtained should V ml 1M KOH. The value of V is
Predict the initial and final products for the following reaction involving 2-pentyne. Hint: the products are isomers and in equilibrium with each other.
If a 210 mg piece of gold (density =19.32 g/cm^3 ) is hammered into a sheet measuring 2.5 x 1.0 ft , what is the average thickness of the sheet in meters?
Problem- What are the major compounds expected to be seen from spinach extract from column chromatography. Describe the properties in terms of polarity and structures
How does theoretical yield allow you to determine the stoichiometry of the reaction?CaCl2.2H2O + K2C2O4.H2O ---> CaC2O4.H2O + 2KCl + 2H2O
Each uranium atom that decays eventually results in the formation of one lead atom. Assuming that the rock did not contain any lead-206 atoms originally, find the age of the rock when the ratio of uranium to lead atoms is 8 to 1.
What mass of solution contains each of the following amounts of dissolved solute? 1.) 15.0g of sulfuric acid in a 25.0\% solution 2.)11.0g of acetic acid in a 5.00\% solution
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