2 g (an excess) of iron is added to 50 cm3 of 0.5 M sulfuric acid. When the reaction is over, the reaction mixture is filtered. The mass of the unreacted iron is found to be 0.6 g. (Ar: Fe = 56.) a. What mass of iron took part in the reaction?
b. How many moles of iron atoms took part?
c. How many moles of sulfuric acid reacted?
d. Write the equation for the reaction, and deduce the charge on the iron ion that formed.
e. What volume of hydrogen (calculated at itp) bubbled off during the reaction?

smooth muscle is composed of involuntary muscles found within the walls of organs and structures such as the esophagus, stomach, intestines, and blood vessels. those muscles push materials like food or blood through organs. unlike skeletal muscle, smooth muscle can never be under your control.

a gas, having a molecular weight of 13 kg/kmol and a kinematic viscosity of 0.25 cm2/s, flows through a pipe 0.25 m internal diameter and 5 km long at the rate of 0.4 m3/s and is delivered at atmospheric pressure.

answer:

technetium is the most reactive. this is followed by silver. the least reactive out of these three elements is strontium.