Consider the following events of photosynthesis.

1. light energy excites electrons.
2. water molecules are split.
3. nadph is formed.

in which locations do each of these events occur?
a. 1. photosystem ii
2. photosystem iii
3. photosystem i
b. 1. photosystem ii
2. photosystem ii
3. photosystem i
c. 1. photosystem i
2. photosystem i
3. photosystem ii
d. 1. photosystem i
2. photosystem ii
3. photosystem ii

There are different photo systems involved in the phenomenon of photosynthesis which are units of protein

The two photo-systems are required for aerobic photosynthesis

Photosystem I

Photosystem II

The photosystem II absorbs energy [ thus light energy excites electron]

In photosystem II splits water molecules are split.

The excited electrons are transferred through cytochrome to photosystem I

In photosystem I NaDPH is formed.

thus answer is

B.

1. photosystem II

2. photosystem II

3. photosystem I

given:

mass of na = 115 g

excess cl2

to determine:

mass of nacl produced

explanation:

given reaction is-

2na(s) + cl2(g) → 2nacl(s)

since cl2 is in excess, na will be the limiting reagent

as per the reaction stoichiometry na: nacl = 1: 1

i.e. moles of na reacted = moles of nacl formed

now, # moles of na = mass of na/atomic mass

                                  = 115 g/23 g.mol-1 = 5 moles

therefore, moles of nacl = 5

molar mass of nacl = 58 g/mol

mass of nacl = 5 moles * 58 g.mol-1 = 290 g

ans: amount of nacl produced = 290 g