(03.02 MC) The table shows the electronegativity values of four unknown elements on the Pauling scale.

Electronegativity Values
Unknown ElementElectronegativity
P2.55
Q3.98
R1.31
S2.5
Which two elements are most likely to form an ionic bond together? (1 point)

Group of answer choices

P and Q

Q and R

R and S

P and S

Look at the reaction below: ca(hco3)2 --> caco3 + co2 + h2o first, balance the reaction. once balanced, use dimensional analysis or another method to find out how many moles of carbon dioxide will be produced if we start with 16.5 moles of calcium bicarbonate (calcium hydrogen carbonate). = mol of co2 number needs to be reported to three significant figures.

Asample of air with a volume of 2.20m3 at a pressure of 105 kpa and a temperature of 30c is cooled to 10c and the pressure is reduced to 75.0 kpa. what is the new volume? 6.9 1.34 2.56 43.0 2.88

Answer asap need by wednesday morning calculate the ph of 0.036m naoh best answer will be brainliest