Which is the correct orbital diagram for carbon? A.
one 1s box, one 2s box, and three 2p boxes with a pair of up- and down-facing arrows in first two boxes, an up-facing arrow in each of the next two boxes, and a vacant fifth box; the boxes represent orbitals and arrows represent electrons
B.
one 1s box, one 2s box, and three 2p boxes with a pair of up- and down-facing arrows in first, second, and third boxes followed by two vacant boxes; the boxes represent orbitals and arrows represent electrons
C.
one 1s box, one 2s box, and three 2p boxes with a pair of up- and down-facing arrows in first box followed by an up-facing arrow in each of the remaining four boxes; the boxes represent orbitals and arrows represent electrons
D.
one 1s box, one 2s box, and three 2p boxes with a pair of up- and down-facing arrows in first two boxes, a single up-facing arrow in third box, a single down-facing arrow in fourth box, and a vacant fifth box; the boxes represent orbitals and arrows represent electrons

For a family dinner, jose’s mom baked a loaf of bread. during the meal, his grandmother commented, “this bread is so dense! ” what do you think his grandmother meant by the word dense? you have some ideas regarding density already, but this experiment will enrich your understanding of the relationship between mass, volume and the density of objects. when making measurements in this experiment we will be using si units, the international system of units. the purpose of using si units is to have the ability to communicate and compare data results with other experiments without having to make conversions. measurement symbol si unit length m meter mass kg kilogram volume l liters density kg/l kilograms per liter any calculations that are performed during this experiment will ultimately be reported in scientific notation. recall that scientific notation is extremely important when we have data that is extremely small or large. scientists rely on a standard form of communication to quickly make hypotheses and judgements based on data. what is the density of block a? a0kg/l what is the density of block b? a1kg/l what is the density of block c? a2kg/l what is the density of block d? a3kg/l what is the density of block e? a4kg/l which block is the densest? a5