Which of the following is a demonstration and not an experiment?

Question 2 options:

Microwaving seeds for 10, 20, and 60 second intervals and then measuring how much they grow over time

Using 6 potatoes to power a light bulb

Adding 5mL of vinegar to 10g of baking soda

s too much pool water may lead to chlorine poisoning. the concentration of chlorine in public drinking water is extremely low and not harmful to human health. sooo yeahh

explanation:

answer: you could do some invislibe ink.

explanation: i will tell you how to if u answer my question.

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

c

explanation: