The initial explanation for a phenomenon prior to experimentation is called a:

theory

law

hypothesis

rule

Michael faraday reported that passing electricity through one solution liberated mass of hydrogen at the cathode and masses of oxygen at the anode.

A solution has 3 mol of sodium dissolved into 500mL of solution. What is the molarity of the solution?

The Kw of pure water at 40°C is 2.92 x 10^-14. (a) Calculate the [H+] and [OH - ] in pure water at 40°C. (b) What is the pH of pure water at 40°C? (c) If the hydroxide ion concentration in a solution is 0.10 M, what is the pH at 40°C?

What is the density of krypton gas at STP?

Change 1m 31cm to cm

A food web shows the easiest way to get the most energy out of a producer the path a producer has to take to reach the top of the web how all organisms are connected through energy all of the possible energy pathways through an ecosystem

What phase change is endothermic

A Gran plot for a potentiometric titration resulted in a slope of 5.56 x 105. Measurements were made using SCE as the reference electrode and the analyte Eo was determined to be 0.354 V.

Aight imma let you guys i

In which choice is the ellipsis used correctly to select from this sentence from The Scarlet Letter? A throng of bearded men, in sad-coloured garments and grey steeple-crowned hats, inter-mixed with women, some wearing hoods, and others bareheaded,