For questions 1-8, write the long form of electron configuration for the following elements. 1. Aluminum (13)
2. Calcium (20)
3. Nickel (28)
4. Zirconium (30)
5. Astatine (85)
6. Seaborgium (106)
7. Gadolinium (64)
8. Plutonium ( 94)

Sylvanite is a mineral that contains 28.0% gold by mass. how much sylvanite would you need to dig up to obtain 77.0 g of gold? explain how you got your answer and the steps you took. you

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) .

There is a single path for electrons. the current decreases when additional resistors are added. the current will be the same in each resistor. these statements best describe a(n) circuit.