The ground-state valence-shell configuration of a particular atom is 5s2 5p4. The element is ______

Which of the following formatting errors have been made in the graph below?

The pop-off valve on the anesthesia machine should be _____ with the type of breathing systems we use.

It is safe to use the oxygen flush valve when the pop-off valve is closed.

The gfp gene is finally in the correct Altered Sites II kit vector and is subject to PCR using three primers.  After adding the appropriate reagents to the tube, you want to select for clones with the gfp gene mutation.  To isolate the clones with the mutations in the gfp gene, which reagent should be added to the selection media?  

Calculate q when 28.6 g of water is heated from 22.0°C to 58.3°C. (specific heat of water is 4.184 J/gᵒC)

Piece of copper (specific heat = 0.385 J/g°C) was heated to 100.°C and then dropped into coffee cup calorimeter containing 100. g of water at 23.0°C. Temperature of water in calorimeter went up to 26.0°C. What was the mass of copper?

In one method of random in vitro mutagenesis by Jena Bioscience, this nucleotide analog can be used.  

Which of the following is a sign of stress in dogs?

How many electrons can be found in 3p sublevel?