A nickel coin is a mixture of metals called an alloy. It is 75% copper and 25% nickel. Design and conduct an experiment to find out how many nickel and copper atoms there are in one 5 cent coin.

If the particles in a sample of matter have an orderly arrangement and move only in place, the sample is a

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) .

Can someone me with 1 to 4 plz. fast