What is caused by the tilt of Earth’s rotational axis? A. earth’s orbit
B. earths seasons
C. Earths revolution
D. Earths rotation

Phosphorous acid, h3po3(aq) , is a diprotic oxyacid that is an important compound in industry and agriculture. the values of phosphorous acid are 1.30 6.70 calculate the ph for each of the given points in the titration of 50.0 ml of 1.5 m h3po3(aq) with 1.5 m koh(aq) .

Significant figures are digits read directly from the measuring instrument plus one more digit, which is __ by the observer.

Which of the following is most likely true about water in chemical solutions?