You decide to clean the bathroom. You notice that the shower is covered in a strange green slime . you try to get rid of this sl
ime by adding lemon juice to water. You spray half of the shower the with lemon juice mixture and the other half of the shower with water. After three days of spraying equal amounts 3 times a day, there is no change in the appearance of the green slime on either side of the shower. IV
DV
CV
EG
CG
The independent variable (IV) is the lemon juice mixture
The dependent variable (DV) is the appearance of the green slime on the shower
The control variable (CV) are time taken to spray, the amount of spray
The experimental group (EG) is the side of the shower sprayed with lemon juice mixture
The control group (CG) is the side of the shower sprayed with water.
INDEPENDENT VARIABLE
Independentvariable is the variable of an experiment that is changed by the experimenter in order to bring about a change. It is the variable being tested in the experiment. In this case, the IV is the lemon juice mixture tested on the green slime on the shower.
DEPENDENTVARIABLE:
Dependentvariable is the variable that is observed or measured in an experiment. It is also called responding variable. The DV in this case is the appearance of the green slime on the shower.
CONTROLVARIABLE:
Controlvariable is the variable that is kept constant throughout the experiment for all groups. The CV is the same for all the groups and they include: time taken to spray, the same amount of spray
CONTROL GROUP
Controlgroup is the group that does not receive the independentvariable or test in an experiment. In this case, the CG is the side of the shower sprayed with water.
EXPERIMENTALGROUP:
Experimentalgroup is the group of ab experiment that receives the experimental treatment or independentvariable. In this case, the EG is the side of the shower sprayed with lemon juice mixture.
Therefore, the IV, DV, CV, EG and CG of this experiment are as follows:
The independentvariable (IV) is the lemon juice mixture
The dependent variable (DV) is the appearance of the green slime on the shower
The control variable (CV) are time taken to spray, the amount of spray
The experimental group (EG) is the side of the shower sprayed with lemon juice mixture
The control group (CG) is the side of the shower sprayed with water.
Solid is stayed undissolved since the arrangement is gotten super saturated. On the off chance that solid molecule is available recrysallization won't happen in this way we need expel the solid molecule by filtarion in hot condition itself . Subsequently, arrangement become totally homogenous and recrysallization item will shaped by moderate cooling
I think the correct answer from the choices listed above is option D. The net ionic equation that will describe the reaction of the reactants when mixed is expressed as:
<span>2PO43–(aq) + 3Ca2+(aq) → Ca3(PO4)2(s) </span> Hope this answers the question. Have a nice day.
