Chemistry, 09.09.2021 09:50, osmarirodriguez2079

Example #2: Preservatives, like salt, help keep food fresh. Katie made 12 loaves of bread using the same recipe and baking method. In 6 of them she used salt, in 6 of
them she used no salt. After the loaves were baked, she placed each of the loaves in a
plastic bad and left them close together on the counter in the kitchen. Each day she
looked at them to see if any mold had started to grow.
What is the control group?
What is the experimental group?
What is the independent variable?
What is the dependent variable?

Answers: 2

Show answers

Other questions on the subject: Chemistry

Chemistry, 21.06.2019 16:00, saby30

Silica, sio2, is formed on silicon as an electrically insulating layer for microelectronic devices. silica is formed when silicon is exposed to o2 gas at an elevated temperature. at 900˚c, it takes 90 minutes for the oxygen to diffuse from the surface to form a 0.06 micron (0.06 x 10-6 m) thick layer of sio2 on

Answers: 1

continue

Chemistry, 22.06.2019 04:00, tifftifftiff5069

You encounter a solution that is acidic and you decide to test it by adding a small amount of a strong acid. the ph lowers slightly but is approximately unchanged, and still remains acidic. what can you say about the solution? a. it is a buffer solution. b. it is not a buffer solution it is a strong acid solution. d. the solution has been neutralized. e. the solution has excess acid present

Answers: 1

continue

Chemistry, 22.06.2019 08:00, gomezyonathan93

An observation that requires measurement is called quantitative observable or qualitative

Answers: 1

continue

Chemistry, 22.06.2019 14:00, hammackkatelyn60

The content of manganese (mn) in steel was determined spectrophotometrically and with the use of the standard addition method. an unknown sample of mn from a digested steel sample gave an absorbance of 0.185 when analyzed spectrophotometrically. when 5.00 ml of solution containing 95.5 ppm mn was added to 50.0 ml of the unknown steel solution (digested sample), the absorbance was 0.248. calculate the concentration, in parts-per-million (ppm), of mn in the digested steel sample solution.

Answers: 3

continue

Do you know the correct answer?

Example #2: Preservatives, like salt, help keep food fresh. Katie made 12 loaves of bread using th...