subject
Chemistry, 12.09.2019 03:30 pr4ever

Agroup of science students collect bacterial swabs from several locations inside their school. the collected bacterial swabs are spread over an agar-filled petri dish and bacteria colonies are grown. the students then install hand sanitizer dispensers throughout the school. one month later the students collect bacterial swabs from the same locations around the school and bacteria colonies are grown. bacterial growth is counted for each sample and the data is compared.
what might be the question the students are asking in this experiment?
a) how long does bacteria live
b) why does bacteria grow at schools
c) does my school have more bacteria than the average school?
d) does the addition of hand sanitizer dispensers throughout the school reduce the amount of bacteria?

ansver
Answers: 3

Other questions on the subject: Chemistry

image
Chemistry, 22.06.2019 06:30, angelrenee2000
Ineed someone to see if my answers are correct! if any are wrong let me know what the correct answers would be and how to get that answer! 1. how many moles of sodium chloride are in 28 grams od nacl? a. 265 mole naclb. 856 mole naclc. 479 mole of nacld. 1.2 mole nacl < my choice2. 734 grams of lithium sulfate (li2so4) are dissolved to make 2500 ml of solution what is rhe molaratiy? a. 2.67 mb. 4.56 mc. 3.89 m < my choiced. 1.78 m3. how many grams of cacl2 would be dissolved in 3.0 l of a 0.50 m solution of cacl2? a. 250 g cacl2 b. 166.5 g cacl2c. 113.65 g cacl2d. 98 g cacl2 < my choice4. suppose you had 58.44 g of nacl and you dissolved it in exactly 2.00 liters. the molarity if the solution would be 0.5 mtrue < my choicefalse 5. i would need 22g of naoh to make a 3.0 m solution using 250 ml of solvent. true < my choicefalse6. identify the solute: you have a .0195 m solution made from using 6.5 g of solute and 3 l of solvent. identify the solute by solving for molar weight. a. the solute is nacl because the molar weight is 58.43 g/mol < my choiceb. the solute is h2so4 because the molar weight is 98.06 g/molc. the solute is cacl2 because the molar weight is 111.11 g/mol
Answers: 1
image
Chemistry, 22.06.2019 13:20, drea445
What natural processes produce large quantities of co2
Answers: 1
image
Chemistry, 23.06.2019 12:20, invocx
Amatch has about 21 milligrams of red phosphorus coating the tip. how many atoms of phosphorus is this?
Answers: 1
image
Chemistry, 23.06.2019 12:30, bryantjorell
An atom holds 7 electrons. use orbital notation to model the probable location of its electrons. an atom hold 22 electrons. use orbital notation to model the probable location of its electrons. an atom holds 17 electrons. use orbital notation to model the probable location of its electrons.
Answers: 1
You know the right answer?
Agroup of science students collect bacterial swabs from several locations inside their school. the c...

Questions in other subjects:

Konu
Mathematics, 27.01.2021 01:00