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Reika [66]
3 years ago
12

What do calories have to do with combustion

Chemistry
1 answer:
kumpel [21]3 years ago
7 0

Answer:

A calorie is the amount of energy needed to raise the temperature of 1 gram of water 1 degree Celsius. The complete combustion of a large kitchen match, for example, gives you about one kilocalorie of heat

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What are the products in the chemical equation for the overall process of photosynthesis?
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Glucose and a plants and ur welcome
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3 years ago
Hydrogen sulfide gas gives rotten eggs their terrible odor. Hydrogen sulfide burns in air (O2) to produce sulfide dioxide gas an
gizmo_the_mogwai [7]

Answer:

2.07 mol O₂

Explanation:

First we need to write down the species present in the chemical equation, using the information given by the exercise:

  • H₂S + O₂ → SO₂ + H₂O

However this equation <em>is not balanced</em>, so now we<u> balance it</u>:

  • 2H₂S + 3O₂ → 2SO₂ + 2H₂O

Now we can use the stoichiometric ratio to <u>calculate the moles of oxygen </u>from the moles of sulfide dioxide:

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3 years ago
How can a new element be made?
Makovka662 [10]

Answer:

by changing the number of protons in the atom

Explanation:

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3 0
3 years ago
Read 2 more answers
Q 1 : why are cylinders of oxygen used in hospitals?
svetlana [45]

Answer:

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B)Pure oxygen, instead of air, is used to increase the flame temperature to allow localized melting of the workpiece material (e.g. steel) in a room environment. ... Welding metal results when two pieces are heated to a temperature that produces a shared pool of molten metal.

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3 years ago
The melting point of copper is 1084°C. How does the energy of the particles in a certain amount of liquid copper compare to the
ipn [44]
The melting point of the solid form of water, which is ice, is 0°C. When we convert both temperatures to kelvin by adding 273 to each we get the melting point of copper as 1357K and that of ice is 273K. Then, dividing the melting point of copper by the melting point of ice, both in absolute temperature scale. The answer would be 4.97. Thus, the energy of molecules of copper is approximately 5 times compared to that of water. 
6 0
4 years ago
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