Chemistry, 22.09.2019 12:20 cheergirlpayton3510
Which two structures would provide a positive identification of a plant cell under a microscope?
a. ribosomes, chloroplasts
b. cell wall, chloroplast
c. plasma membrane, large central vacuole
d. cell wall, mitochondria
Answers: 2
Chemistry, 22.06.2019 15:00
Phosphorous acid, h3po3(aq) , is a diprotic oxyacid that is an important compound in industry and agriculture. p k a1 p k a2 1.30 6.70 calculate the ph for each of the points in the titration of 50.0 ml of 1.5 m h3po3(aq) 1.5 m h 3 po 3 ( aq ) with 1.5 m koh(aq). 1.5 m koh ( aq ) .
Answers: 1
Chemistry, 23.06.2019 08:00
Why is it important for scientists to review and repeat the work of other scientists? 1.a scientific theory must be tested three times before it is proven. 2.the scientific method only applies to repeated experiments. 3.an experiment may have had errors that the scientists didn't recognize. 4.the results of individual scientists may be influenced by bias. 5.an experiment must be performed twice before the data can be analyzed.
Answers: 3
Chemistry, 23.06.2019 12:30
)a children’s liquid cold medicine has a density of 1.23 g/ml. if a child is to take 2.5 tsp in a dose, what is the mass in grams of this dose? (1 tsp = 5 ml)
Answers: 1
Which two structures would provide a positive identification of a plant cell under a microscope?
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