For something to combust, it must have <em>Oxygen</em><em> </em>
- A. Carbon dioxide
- <u>B. Oxygen</u>
- C. Water
- D. Nitrogen
- We don't have to keep lighting a campfire, it just keep burning
- To summarize, for combustion to occur three things must be present: a fuel to be burned, a source of oxygen, and a source of heat
So choose letter B
Answer:
Human body systems can be compared to anything that has many parts doing specialized jobs to help the whole. Here's an example: The human body is like a city. The nervous system of the body is like the government of the city because the nervous system controls the body like the government controls the city.
Answer:
Because of the breeds
Explanation:
Like in humans, the dogs belong to the same scientific group, but through the passing of time, there has been some changes in their DNA, slightly differences that make the size, the hair, and another traits to be different.
In humans all the "breeds" suffer the same changes, that is the reason that spite we are homo sapiens, there are different groups of humans as the oriental, Caucasian, etc.
A)Calcium-This because calcium has two valence electrons hence it is a metal therefore it will form an ionic bond with carbon.
The answer to this question would be: 3 molar
A molar unit will be equal to moles of solute per 1 liter of solvent. In this question, you are given the volume of the solution (264.8ml) and the weight of the molecule(139mg). Since the unit is moles not mg, then you need to convert the molecule into moles. To do that you need to know the ascorbic acid molecular weight which was: 6*12 + 8*1 + 6 *16 =<span>176mg/moles.
molecule in moles= 139mg/ (176 mg/moles)= 0.79 moles
Then the molarity of the juice should be: 0.79 moles/ (1000ml/264ml)= 2.991 M= 3 M</span>
