Bill stands near a swimming pool and notices that the water around his feet is a lot cooler than the water near the surface. which process causes this difference in temperature?

What is the minimum mass of nh4hs that must be added to the 5.00-l flask when charged with the 0.250 g of pure h2s (g), at 25 ∘c to achieve equilibrium?

How many pain pills does it take to hurt someone really really badly or Kill them?

Which is more metallic a) Potassium b) Bromine

How many moles of solute are present in 50.0 ml of 0.20 m kno3

Why does a person's heart rate increase during exercise? (1) Less oxygen is needed. (2) More oxygen is needed. (3) Less carbon dioxide is needed. (4) More carbon dioxide is needed

At 400 K, the rate of decomposition of a gaseous compound initially at a pressure of 12.6 kPa, was 9.71 Pa s-1 when 10.0 per cent had reacted and 7.67 Pa s-1 when 20.0 percent had reacted. Determine the order of the reaction.

What particles are used to form bonds

Explain how antimony is useful for humans. What is it used for?

Classify these compounds as ionic or molecular. ncl3 nabr

If 3.64g of sand is separated from 5.25g of a mixture of salt and sand what is the percentage of sand in the sample