Answer:
Explanation:
If we want to convert from grams to moles, the molar mass is used. This is the mass of 1 mole. They are found on the Periodic Table as the atomic masses, but the units are grams per mole (g/mol) instead of atomic mass units (amu).
Look up the molar mass of carbon.
Set up a ratio using the molar mass.
Since we are converting 3.06 grams to moles, we multiply by that value.
Flip the ratio. This way, the ratio is still equivalent, but the units of grams of carbon cancel.
The original measurement of grams (3.06) has 3 significant figures, so our answer must have the same. For the number we calculated, that is the thousandth place.
The 7 in the ten-thousandth place tells us to round the 4 up to a 5.
3.06 grams of carbon is approximately <u>0.255 moles of carbon.</u>
Answer:
True
Explanation:
Pi bonds are formed using p orbitals. Atoms that have p orbitals have 3 of them. In an sp² hybridized atom, only 2 of the 3 p orbitals are being used in the sp² orbitals, leaving one p orbital free for pi bonding. Therefore, only one pi bond can be formed to an sp² hybridized atom.
The answer is 0.
n is the principal quantum number and l is the angular momentum quantum number. The possible values of ml (magnetic quantum number) range from -l to +l. In this case, 0 is the only possible value of ml.
But, as a further example, if n=2 and l=1, the possible values of ml would be -1, 0, and +1.
Answer:
this is for the table for question 7
Explanation:
element name: # of valence electrons : group:
lithium 1 1
sulfur 6 16
barium 2 2 Phosphorus 5 15
germanium 4 14
fluorine 7 9
aluminum 3 13
krypton 8 full shells 18
Have a nice day): that’s the answer!
