Chemistry, 26.08.2021 22:20 ksa23

A student set up the experiment shown below to determine if radish seeds take in oxygen as they germinate. Methylene blue is a chemical that is blue when oxygen is present, but is colorless when oxygen is not present. Containers A and B each contained 200 mL of water and 10 drops of methylene blue. Ten radish seeds were added to container A. Container B had no radish seeds. The purpose of container B in this experiment is to

A. show that seeds do not give off oxygen

B. serve as the experimental container

C. show that seeds do not give off carbon dioxide

D. serve as the control container

Answers: 1

Show answers

Another question on Chemistry

Chemistry, 22.06.2019 13:00

One of the hopes for solving the world's energy problem is to make use of the fusion reaction 21h +31h --> 42he + 10n + energy how much energy is released when 1 mol of deuterium is fused with 1 mol of tritium according to the above reaction? the masses of the atoms and the neutrons are as follows: 21h = 2.0140 amu 31h = 3.01605 amu 42he = 4.002603 amu 10n = 1.008665 amu. the speed of light is 2.9979 x 108 m/s.

Answers: 1

Answer

Chemistry, 22.06.2019 14:30

Aroom with dimensions 7.00m×8.00m×2.50m is to be filled with pure oxygen at 22.0∘c and 1.00 atm. the molar mass of oxygen is 32.0 g/mol. how many moles noxygen of oxygen are required to fill the room? what is the mass moxygen of this oxygen?

Answers: 1

Answer

Chemistry, 22.06.2019 16:10

Given the following equation: 2a1 + 3mgcl2 --> 2alcl3 + 3mg how many moles of aluminum chloride are produced from 2.5 moles of magnesium chloride?

Answers: 1

Answer

Chemistry, 22.06.2019 20:20

Nitric acid can be formed in two steps from the atmospheric gases nitrogen and oxygen, plus hydrogen prepared by reforming natural gas. in the first step, nitrogen and hydrogen react to form ammonia: (g) (g) (g) in the second step, ammonia and oxygen react to form nitric acid and water: (g) (g) (g) (g) calculate the net change in enthalpy for the formation of one mole of nitric acid from nitrogen, hydrogen and oxygen from these reactions. round your answer to the nearest .

Answers: 3

Answer

You know the right answer?

A student set up the experiment shown below to determine if radish seeds take in oxygen as they germ...

Questions

Chemistry, 08.07.2019 03:30

2.70g of aluminium was heated in oxygen until there was no further gain oxide ash formed had a mass of 5.10g. deduce the empirical formula of the oxid...