Which one is ionic, polar covalent and no polar covalent. S-O, Br-Br, Na-O

You have prepared a saturated solution of x at 20∘c using 31.0 g of water. how much more solute can be dissolved if the temperature is increased to 30∘c? express your answer with the appropriate units.

True or False: for young people it is more likely that they will drive too slow after drinking because of their natural risk-taking propensities

Use the concept of ionization energy to explain why sodium form a 1 + ion (Na+) but magnesium forms a 2 + ion (Mg2+).

Consider a tank used in certain hydrodynamic experiments. after one experiment the tank contains 900 l of a dye solution with a concentration of 1 g/l.

How many moles of hydrogen gas would be needed to react with excess carbon dioxide to produce 88.1 moles of water vapor?

Time (s) [NO2] (mol/L) 0 0.500 1,200 0.444 3,000 0.381 4,500 0.340 9,000 0.250 (Note: The rate law only depends on the concentration of NO2.) Consider the reaction NO2 (g) + CO (g) → NO (g) + CO2 (g).

Building a dam to produce hydro-electricity power is one way to take advantage of a common renewable resource. This produces much less pollution than a coal burning plant. However, building dams is not a perfect solution.

The goose has a mass of 22.6 lb (pounds) and is flying at 7.90 miles/h (miles per hour). What is the kinetic energy of the goose in joules?

How can I balance this chemical equations? Aluminum and hydrochloric acid react to form aluminum chloride and hydrogen gas.?

Convert 8.05 moles of magnesium carbonate to formula units.