Chemistry, 28.07.2019 08:00 ameera1973
Pls a process in the carbon cycle is seen when carbon in coal burns in the presence of oxygen to form carbon dioxide. which of the following statements best proves that the law of conservation is obeyed during this process? 1.the total mass of carbon used up is equal to the total mass of oxygen used up. 2.the total mass of oxygen and carbon dioxide is equal to the total mass of carbon. 3.the total mass of oxygen and carbon is equal to the total mass of carbon dioxide. 4.the total mass of carbon used up is equal to the total mass of carbon dioxide formed.
Answers: 1
Chemistry, 21.06.2019 23:00
When determining the shape of a molecule, it is important to draw a lewis dot structure first in order to see the total number a. electrons within the moleculeb. bonding and unshared pairs around central atomc. unshared pair within the molecule( i really need it )
Answers: 1
Chemistry, 22.06.2019 10:30
Asample of air with a volume of 2.20m3 at a pressure of 105 kpa and a temperature of 30c is cooled to 10c and the pressure is reduced to 75.0 kpa. what is the new volume? 6.9 1.34 2.56 43.0 2.88
Answers: 1
Chemistry, 22.06.2019 20:00
Suppose that some of the compound spilled out of the crucible after it was heated. would that cause the percent by mass of water in the compound determined by the experiment to be too low, too high, or unchanged? briefly explain your answer.
Answers: 1
Chemistry, 22.06.2019 23:00
What is the name of the enzyme that forms at the start of transcription?
Answers: 1
Pls a process in the carbon cycle is seen when carbon in coal burns in the presence of oxygen to fo...
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