How much heat in calories is required to heat 60 g of water from 15°C to 35°C

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 not true about the atomic model of substances?