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

While cutting the tape to resecure the endotracheal tube of a patient who is being mechanically ventilated, the respiratory therapist accidently severs the cuff inflation line. What should the therapist do at this time?

A particular bracelet was made from rose gold with the composition of 72.00 % Au, 2.75 % Ag and 25.25 % Cu.  If the bracelet has a mass of 35.7 g, then what mass of Au does the bracelet contain?   Show your math setup with answer.  An answer only will NOT receive full credit. You may choose to use the equation editor (x  ).  Click on the three vertical dots to find it in the tool bar. Express answer using significant figure rules. Equation = 1 pt Math setup = 2 pts Answer  = 1 pt Sig Figs = 1 pt

This is a BONUS question worth 4 points.   Determine the volume of 5.50 yds3 expressed in in3.  Use:  1 yd = 36 inches.   Show your math setup with answer.  An answer only will NOT receive full credit. You may choose to use the equation editor (xx  ).  Click on the three vertical dots to find it in the tool bar. Express answer using significant figure rules. Math setup = 3 pts Answer  = 1 pt (0.5 pt for sf)

Convert 78oC to oF. Note: Do not show any places after the decimal.   Do not show any units.

An automobile is traveling at 1075 inches / second.  What is the speed expressed in miles / hour?  Given:  1 mile = 5280 feet and 1 foot = 12 inches.   Show your math setup with answer.  An answer only will NOT receive full credit. You may choose to use the equation editor (x  ).  Click on the three vertical dots to find it in the tool bar. Express answer using significant figure rules. 1 point each conversion factor used = 4 points Answer = 0.5 pt correct + 0.5 pt sig figs = 1 point

Select ALL that are examples of chemical changes:

The equilibrium constant expression for the reversible reaction 2 X2(g) + 3 Y2(g) 

Write the following in decimal form, keeping the proper number of significant figures: 4.921 x 107

Select ALL of the following that are exact numbers: