A group of students wants to know what amount of a particular fertilizer will produce larger watermelons. Which of the following is the best choice to answer their question? Students should make observations of various fertilizers.

Students should conduct an investigation about various types of fertilizers.

Students should conduct a controlled experiment where they change the amount of fertilizer for watermelon plants and measure the difference in size of the watermelons.

Students should conduct both an investigation of various fertilizers and a controlled experiment where they change the amount of the particular fertilizer for watermelon plants and measure the differences.

the students should make thier own fertilizer :D

It is quite simple,

1. collect student's feces (80% female 20%male)

2. stir student feces and incorparate orange juice

3. add male worms

4. dilute with student urine (gender matter)

5. remove male worms and add female worms

6. remove female worms

7. drink

Explanation:

we can conclude that the melting point of table salt is above room temperature (it's actually 801 deg c). the melting point of mercury must be below room temperature (- 39 deg c).

as given the equation is

2al + 6 hcl > 2 alcl3 + 3 h2(g)

as per equation two moles of aluminum reacts with six moles of hcl to give two moles of alcl3 and three moles of hydrogen gas

given: three moles of al are present and 7 moles of hcl

for three moles of aluminum nine moles of hcl will be required

however as 7 moles of hcl are present so the limiting reagent is hcl

hcl is going to decide the number of moles of product formed

when six moles of hcl are present = 3 moles of h2 are formed

when one mole of hcl is present == 3/6 mole sof h2 will be formed

when 7 moles of hcl are present = 3 x 7/ 6 moles of h2 will be formed = 3.5 moles of h2