Chemistry, 01.10.2019 03:00 hannahroswall1
Megan experimented with growing mold. she took 3 pieces of bread from the same loaf and placed each into a plastic sandwich bag. before sealing the bag, she added 5 drops of water to each slice. next, she placed one bag on her window sill, one in a dark cabinet, and one in a room away from sunlight. megan concluded that the different amount of mold that grew on each slice was due to the amount of light it received. is this a valid conclusion?
a) yes, because the light was the manipulated variable.
b) yes, because the light was the controlled variable.
c) no, because the light could not have affected the growth.
d) no, because the light should have been the same for each bread slice.
Answers: 2
Chemistry, 22.06.2019 17:50, kaylamount
Cryolite, na3alf6(s), an ore used in the production of aluminum, can be synthesized using aluminum oxide. start this question by first balance the chemical equation.1.) balance the equation: - alo3(s)+naoh(l)+hf(> na3alf6+h2o(g). 2.) if 17.5 kilograms of al2o3(s), 51.4 kilograms of naoh(l), and 51.4 kilograms of hf(g) react completely, how many kilograms of cryolite will be produced? 3.)which reactants will be in excess, (al2o3, naoh, or hf) 4.)what is the total mass of the excess reactants left over after the reaction is complete in kg?
Answers: 2
Chemistry, 22.06.2019 19:40, jholland03
What type of electromagnetic waves does the human eye see as the colors red blue or green a visible light waves b radio waves c infrared waves d microwaves
Answers: 1
Megan experimented with growing mold. she took 3 pieces of bread from the same loaf and placed each...
Mathematics, 29.09.2019 19:00
Chemistry, 29.09.2019 19:00
English, 29.09.2019 19:00
Health, 29.09.2019 19:00
Mathematics, 29.09.2019 19:00