Which of the following combinations cannot produce a buffer solution? A. HOCI and Naci
B. H2SO4 and Na2SO4
C. HCIO4 and NaClO4
D. HNO2 and KNO2
E. NH3 and (NH4)2SO4
F. HF and NaF
G. HCN and LiCN
Look at sample problem 19.1 in the 8th ed Silberberg book. Write the equation for the acid dissociation, write the Ka expression, solve for H concentration, then do an ICE chart. Put the values into the Ka expression (the one you solved for H and find H , convert to pH and input that to 2 decimal place. Or use the Henderson-Hasselbalch equation:
pH = pk, + log ( (19.1) acid
Calculate the pH of a buffer solution consisting of 0.59 M HA (Ka = 2.6 x 10") and 0.7 M.

Asap , 8th grade science 50 points 1) a 2kg bowling ball sits on top of a building that is 40 m tall. what type of energy does it have? potential energy energy of acceleration kinetic energy chemical energy 2) a 2 kg bowling ball sits on top of a building that is 40 meters tall. how much potential energy does it have? 784 j 80 j 784 n 78.4 j 3) a 4 kg bowling ball rolls at a speed of 5 m/s on the roof of a building that is 30 meters tall. what type of energy does the bowling ball have? both potential and kinetic energy kinetic energy potential energy speed 4) a 4 kg bowling ball rolls at a speed of 5 m/s on the roof of a building that is 30 meters tall. what is its kinetic energy? 50 j 10 j 120 j 1,176 j 5) an 8 kg bowling ball rolls at a speed of 10 m/s on the ground. what type of energy does the bowling ball have? kinetic acceleration potential speed 6) an 8 kg bowling ball rolls at a speed of 10 m/s on the ground. what is its kinetic energy? 40 j 80 j 160 j 400 j 7) a 20 kg child is tossed in the air by her parent. what is her kinetic energy when she is 2 meters off the ground traveling at 5 m/s? 200 j 40 j 100 j 250 j 8) a 1,000 kg car has 50,000 j of kinetic energy. what is its speed? 100 m/s 150 m/s 50 m/s 10 m/s 9) a 200 kg boulder has 39,200 j of gravitational potential energy. what height is it at? 50 m 20 m 150 m 200 m 10) a 1 kg model airplane has 12.5 j of kinetic energy and 98 j of gravitational potential energy. what is its speed? 5 m/s 10 m/s 15 m/s 20 m/s

This graph gives information on changes in sea ice extent in the arctic ocean over a 30-year span. the overall trend shows in the ice extent. to address the trend, scientists need to ask themselves, one direct consequence of the trend is that

A6.10 m nacl can be made by adding [x]g of nacl to a container and making the volume of water up to the 1.00 l line