2. Glucose, C6H12O6, along with O2 is a product that is produced from photosynthesis of plants. How many grams of carbon are in 16.55 g of glucose

6.62 g of carbon.

Explanation:

We'll begin by calculating the molar mass of C6H12O6. This is illustrated below:

Molar mass of C6H12O6 = (12×6) + (12×1) + (16×6)

= 72 + 12 + 96

= 180 g/mol

Next, we shall determine the mass of carbon (C) in 1 mole (i.e 180 g) of C6H12O6. This is illustrated:

Mass of C in C6H12O6 = 6C = 12×6

Mass of C in C6H12O6 = 72 g

Thus, 180 g of glucose contains 72 g of carbon.

Finally, we shall determine the mass of carbon in 16.55 g of glucose. This can be obtained as follow:

180 g of glucose contains 72 g of carbon.

Therefore, 16.55 g of glucose will contain = (16.55 × 72)/180 = 6.62 g of carbon.

Thus, 16.55 g of glucose contains 6.62 g of carbon.

alkaline metals are lithium, sodium, rubidium, potassium, cesium and francium.

alkali metals have electronegativity from 0.7 to 1, lowest in periodic table of elements, which means that alkali metals (i group in periodic table) has positive oxidation number in compounds.

electronegativity is a chemical property that describes the tendency of an atom to attract a shared pair of electrons towards itself.

alkaline metals (far left in main group) have lowest ionizations energy and easy remove valence electrons,

for example, potassium is the alkali metal and has a single valence electron in the outer electron shell.

electron configuration of potassium is: ₁₉k 1s²2s²2p⁶3s²3p⁶4s¹.

they can not exist alone in nature, because they are very reactive.