11. At student carries out an experiment to find how fast 3cm magnesium ribbon dissolve in 10 cm3 samples of sulfuric acid at different temperatures.
Which piece of apparatus does the student NOT need?
balance
O graduated cylinder
O stop-watch
O thermometer

Which of the following statements about hybrid orbitals is or are true? choose all that apply. choose all that apply. under sp2 hybridization, the large lobes point to the vertices of an equilateral triangle. after an atom undergoes sp hybridization there is one unhybridized p orbital on the atom. the angle between the large lobes of sp3 hybrids is 109.5∘

The three types is stress that act on earths rocks are compression, tension, and

Asample of tin (ii) chloride has a mass of 0.49 g. after heating, it has a mass of 0.41 g.  what is the percent by mass of water in the hydrate?   %