All categories

3 years ago

What does it mean to have a control group

2 answers:

4 0

The control group is defined as the group in an experiment or study that does not receive treatment by the researchers and is then used as a benchmark to measure how the other tested subjects do.

Mashcka [7]3 years ago

3 0

Control group is a group in a lab or project that is completely controlled and you know exactly how you want it to go. Example: you have your controlled group of cereal and theyre all froot loops with the same cereal same bowl. the opposite of that would be having the same bowl, same milk, and 3 different cereal brands.

You might be interested in

A graduated cylinder is filled to 10.0 mL with water and a piece of granite is placed in the cylinder displacing the level to 23

Rus_ich [418]

Answer:

13.7 cubic centimeters

Explanation:

23.7-10=13.7mL

8 0

3 years ago

Which of the following characterizes gamma radiation?

Harman [31]

Answer is B
It is strongly ionizing and cannot penetrate dense materials.

5 0

2 years ago

Which kind of wave causes particles to vibrate parallel to the direction the wave is moving?

bagirrra123 [75]

Answer:

electromagnetic

Explanation:

because it move faster

6 0

2 years ago

Read 2 more answers

Which solution has the greater concentration?

WITCHER [35]

The higher concentrated solution is 0.250 mole LiCl dissolved in 250 ml of solution

( B).0.250mole of LiCl diluted in 250ml solution

Explanation:

Procedure to find the intensity of the solution:

To find the intensity of the solution, we have to use the following formula

M1V1=M2V2

250mL of a 0.500 M aqueous solution of LiCl is diluted with water

$M1V1=(250) \times (0.500)=125M$

250 ml of a 0.250M aqueous solution of LiCl is diluted with water

$M2V2=(250) \times (0.250)=62.5M$

Thus the PH level of a solution increases from ascending order, Therefore the Solution with 62.5M is a higher concentration than that of the solution with 125M.

7 0

3 years ago

Which was the limiting reactant: the zinc or the hydrochloric acid? Remember that the limiting reactant is completely consumed i

Alexeev081 [22]

Suppose you initially have equal amounts of the reactants: 1 g of zinc (65.38 g/mol) and 1 g of HCl (36.46 g/mol). The reaction would be:

Zn + 2 HCl → ZnCl₂ + H₂

Moles Zn: 1/65.38 = 0.0153 mol
Moles HCl: 1/36.46 = 0.0274 mol

Moles of HCl needed:
0.0153 mol Zn (2 mol HCl/1 mol Zn) = 0.0306 moles HCl needed

Since the available moles of HCl is lesser than the theoretical amount of HCl needed, then the limiting reactant is HCl in this reaction.

8 0

3 years ago