Marcel just purchased 1.69 grams of iron fillings in order to make living putty for his 6 year old niece. how many moles of iron are made in his sample?

Ans: 0.0303 moles of iron are made in the sample

Given:

Mass of iron = 1.69 g

To determine:

moles of iron in the sample

Explanation:

Moles of iron = mass of iron/atomic mass

                      = 1.69 g/55.85 g.mol-1 = 0.0303 moles

under a microscope, cancer cells may look very different from normal cells. they often have different sizes and some may be larger than normal while others are smaller. cancer cells are often abnormally shaped and the control centre of the cell (the nucleus) may have an abnormal appearance.

i think? ?

colorless gas, exhibiting a blue glow when placed in an electric field

b) solid

its a type of rock