LIST OF SOLUTIONS

Question 11 pts How many electrons must be lost by an atom of calcium for it to obtain a stable electron configuration?   Group of answer choices 1 2 3 4…

Question 1 The cesium isotope 13155Cs is used in cancer treatment. 13155Cs contains _____ protons. 55   76   131     186   Question 2 The cesium isotope 13155Cs is used in…

Question 1 Sugar (C12H22O11) contains which elements? Group of answer choices calcium, helium and oxygen copper, helium and oxygen chromium, hafnium and osmium carbon, hydrogen and oxygen californium, hafnium and…

Question 1 Classify the salt substitute KCl as an element, compound, or a mixture. Group of answer choices element compound mixture Question 2 Classify the mixture gasoline as a homogeneous…

Question 1 On the first chemistry test, 12 students got As, 18 students got Bs, and 20 students got Cs.  What is the percentage of students who received Bs? Group…

Shapes of Molecules: Using Molecular Models OBJECTIVES In this experiment, you will; Make models of molecules Write Lewis structures for molecules Predict molecular shapes from Lewis structures Predict polarity of…

    Conductivity of Solutions: The Effect of Concentration   If an ionic compound is dissolved in water, it dissociates into ions and the resulting solution will conduct electricity. Dissolving solid…

OBJECTIVES In this laboratory exercise, you will: Simulate the process of radioactive decay and use the data to determine concentrations at different time periods. Plot a graph of radioactive decay…

OBJECTIVES In this experiment, you will; Prepare paper chromatography solvent Prepare paper chromatography sheet Measure and calculate Rf’s of unknowns Determine the type of pen used in a forged check…