A sample of gaseous oxygen is heated with an electrical coil. If 230. J is added to a 13.8-gram sample and the final temperature is 38.6°C, calculate the initial temperature of the oxygen.
°C.

An electrons position cannot be known precisely only it's probability of being in a certain location can be known

Phosphorous acid, h3po3(aq) , is a diprotic oxyacid that is an important compound in industry and agriculture. p k a1 p k a2 1.30 6.70 calculate the ph for each of the points in the titration of 50.0 ml of 1.5 m h3po3(aq) 1.5 m h 3 po 3 ( aq ) with 1.5 m koh(aq). 1.5 m koh ( aq ) .

What is the empirical formula of a compound that is 50.7% antimony and 49.3% selenium ?