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victor made the graph shown to record the observations of an experiment to study the effect of soil additives on the growth of plants. three identical plants having a height of 25 cm were used for the experiment. the first plant had no soil additives, the second plant had wheat straw in the soil, and the third plant had polymer in the soil. all other growing conditions of the plants were kept constant.
which correct step in the scientific method did victor most likely do before the step described here?
analyze the data
publish the results
construct a hypothesis
make conclusions based on the graph
how is volume calculated given mass and density?
sum of mass and density
mass divided by density
mass multiplied by density
difference of mass and density

1) The correct step in the scientific method that Victor did is Construct a hypothesis.

2) Given mass and density, volume is calculated as mass divided by density.

Explanation:

1) Before doing the assay and make a graph with the results obtained, Victor should think what he wants to prove, so he should make a hypoythesis to test with the assay.

2) The formula of density is

density = mass/volume ⇒ density x volume = mass ⇒                      volume = mass/density.

construct a hypothesis

Explanation:

he was actually suppose to analyze the data before construct a hypothesis.

1.43 x 10^-11 j the guy commented the awnser just making sure u see it .

answer:

the reaction is type of combination reaction.

explanation:

on the product side, there are 2 molecules of bonded to fe   which means one atom of fe are combined two molecules of . so, balanced chemical equation becomes :

this reaction follows the reaction type of combination reaction. a combination reaction is defined as chemical reaction in which reactants combines together to form a single product.