Which of the following measurements is expressed to three significant figures?
a) 0.007 m
b)7077 mg
c)7.30 x 10^-7
d) 0.070 mm

How do you lengthen a pattern piece? (family and consumer science, sewing)

Iron (3) oxide will decompose in the presence of hydrogen gas and heater to produced iron and digydrogen monoxide white a balanced chemical equation

Ican determine the molar mass of an element by looking on the under the atomic mass for the element. for example the molar mass of phosphorus is 30.974 grams/mole. avogadro’s number tells me the amount of representative particles in 1 mole of any substance. this means 12.011 gram sample of carbon and a 32.0 gram sample of sulfur have the same number of atoms.