Sancia's class is studying rocks and minerals. sancia has found this rock on the school playground. "i think this rock is made of mostly one mineral," said sancia's teacher. she gave sancia the mineral chart you see here. what evidence would be of little use to sancia? what characteristic would be most useful to her when classifying the mineral?
a) least useful - color; most useful - streak
b) least useful - hardness; most useful - color
c) least useful -streak; most useful - hardness
d) least useful - hardness; most useful - cleavage

Drive down any three characteristic of modern periodic table

What woukd most likely be the transmittance at a 0.70 m solution of solute a? a) 7.6%b) 1.1%c)4.0%d)4.6%

Achemistry student needs to standardize a fresh solution of sodium hydroxide. he carefully weighs out of oxalic acid , a diprotic acid that can be purchased inexpensively in high purity, and dissolves it in of distilled water. the student then titrates the oxalic acid solution with his sodium hydroxide solution. when the titration reaches the equivalence point, the student finds he has used of sodium hydroxide solution. calculate the molarity of the student's sodium hydroxide solution. be sure your answer has the correct number of significant digits.