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What is the formula for magnesium phosphide? NOTE: Since entering answers does not allow for subscripts, write Cs2S as Cs2S.

Which element has 4 valence electrons?

Draw the electron dot formula for the cyanate ion, CNO-, and state the type of bond between N and O. (Hint: CNO- has a triple bond between C and N.) Note: N is central

Rank the following according to increasing frequency:  orange, infrared, red, tv List the words in the appropriate order in your answer.

Select ALL of the following that is/are classified as homogeneous mixture(s):

Write the following in standard scientific notation, keeping the proper number of significant figures: 0.000 071 0

Which element has the greatest electronegativity? Use relative location on the periodic table and periodic trends to decide (not actual EN values).

Bonus Question worth 4 points.  Be sure to show all work for credit, since steps are worth points, as well as the answer. What is the mass of a 10.0% blood plasma sample that contains 2.50 g of dissolved solute?

Select the bond that is MOST polar (HINT: has greatest

Write the formula for hypochlorous acid.   Show the individual ions first with their charges.  To show superscripts, use the T2 function in the tool bar. Then show the formula for the acid compound.  To show subscripts, use the drop down next to T2 in order to get to T2 function on the tool bar. 2 Ion formulas = 2 pts Compound formula = 1 pt