Lucy lives near a small pond. Lucy is studying the spread of the invasive plant called purple loosestrife near the pond. Every month for the past two years, she has counted the number of loosestrife plants near the pond. She has also counted the number of other plants, such as cattails, found at the pond over the years. What question can Lucy answer using the data she has collected?
A.
Has the number of cattails gone down as the number of loosestrife plants has gone up?

B.
Do songbirds eat the seeds produced by the loosestrife plants?

C.
What is the best temperature for growing loosestrife plants and cattail plants?

D.
Do ducks like to nest in loosestrife plants more than in cattail plants?

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

cytokinesis is the splitting of a cell membrane to form 2 identical daughter cells. it's similar to mitosis as both cells have identical copies of dna and cytokinesis is a step in the mitotic cycle.

< > according to newton's third law of motion, forces always act in equal but opposite pairs. another way of saying this is for every action, there is an equal but opposite reaction.< >