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Margarita [4]
3 years ago
15

write the chemical equation for the following reaction: the elements carbon and oxygen combine to yield the compound carbon diox

ide
Chemistry
1 answer:
sergejj [24]3 years ago
7 0
Carbon + oxygen ---> carbon dioxide

C + O ---> CO2 
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A sequence of thermonuclear fusion processes inside massive stars can continue to transform the nuclei of elements such as carbo
nlexa [21]

Answer:

Iron is the element that is produced at the limit of the reaction.

Explanation:

In nuclear fusion 2 lighter nuclei are combined together into a single nucleus releasing a tremendous amount of energy in the process.

Up to fusion of iron the reaction of fusion is exothermic but when iron atom pops out the reaction becomes endothermic and it requires very high amount of energy to fuse iron atoms which is not available thus marking an end to the fusion reaction.

5 0
3 years ago
Which of the following statements correctly characterizes the subatomic particle
vichka [17]

Answer:

Its mass is about the same as that of a proton

Explanation:

4 0
3 years ago
Please help on this one?
Bezzdna [24]

Answer:

\text{C. } _{36}^{85}\text{Kr}

Explanation:

Your nuclear equation is  

_{35}^{85}\text{Br} \longrightarrow \, _{-1}^{0}\text{e} +\, _{x}^{y}\text{X}

The main point to remember in balancing nuclear equations is that

  • the sum of the superscripts and must be the same on each side of the equation.
  • the sum of the subscripts must be the same on each side of the equation.  

Then  

85 = 0 + y, so y = 85 - 0 = 0  

35 = -1 + x, so x = 35 + 1 = 36

The nucleus with atomic number 36 and atomic mass 85 is krypton-85.  

The nuclear equation becomes  

_{35}^{85}\text{Br} \longrightarrow \, _{-1}^{0}\text{e} + \, _{36}^{85}\text{Kr}

4 0
2 years ago
Read 2 more answers
With radiocarbon dating, scientists compare an object's carbon-14 levels with _____. the carbon-14 levels of an object from the
trapecia [35]

Answer:carbon-14 levels in the atmosphere

Explanation:

When carrying out radiocarbon dating, the level of carbon-14 in a sample is compared with the level of carbon 14 in the atmosphere because, objects exchange carbon-14 with the atmosphere.

Comparison of the activities of carbon-14 in the atmosphere and in the sample gives the age of the sample since the half-life of carbon-14 is a constant.

5 0
3 years ago
Atoms of different elements have a different mass and volume. Why is the statement true?
Rufina [12.5K]

Answer:different elements have different number of electrons and shells/orbits thatswhy it have different atomic mass and size.

Explanation:

6 0
3 years ago
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