Tính pH của dung dịch H3PO4 0.01 M. Biết acid H3PO4 có các giá trị pKa lần lượt là: 2.12; 7.21; 12.36

In which direction will the following reaction go if the standard reduction potentials are 0.80 v for ag/ag+ and –0.44 v for fe/fe2+? ag+ + fe → ag + fe2+ a.)forward b.)the reaction cannot occur. c.) not enough information is given. d.) reverse

1) which of the following is the best example of a physical change? a) sugar dissolving in tea b) firefly glowing 2) in the combustion of ethane, what is/are the reactants? c2h6 + o2 ==> co2 + h2o a) c2h6 and o2 b) co2 and c2h6

Which are forms of frozen water? check all that apply. dew frost hail rain sleet