5.6dm^3 of oxygen was evolved at the anode during electrolysis of dilute copper (2) tetraoxosulphate(6) using platinum electrode . what mass of copper is deposited at the cathode during the process ( cu=64, molar gas volume of a gas=22.4dm^3, 1 faraday=96500

Rockwell hardness of pins of a certain type is known to have a mean value of 50 and a standard deviation of 1.1. (round your answers to four decimal places.) (a) if the distribution is normal, what is the probability that the sample mean hardness for a random sample of 8 pins is at least 51?

The total cost of anja’s trip to the dentist was $628.35. she paid a flat fee of $89.95 which included the checkup and cleaning and then had 4 cavities filled, each of which cost the same amount. which shows the correct equation and value of x, the cost of each cavity filling?

Me complete this proof! prove that a quadrilateral is a square. me with the steps for this proof.