Answer:
<em>Emission of CO2 from burning of fossil fuels (coal, natural gases and oil) is the activity that releases the largest amount of CO2 into the atmosphere.</em>
Explanation:
The emission of CO2 is a major world crisis which is one of the single most contributor to global warming and rapid climate change. Fossil fuels produced from the remains of living organisms millions of years ago, under intense heat and pressure, has been the major fuel source for human industrial and domestic activities. Industries rely heavily on fossil fuels to power their machines and for industrial heating, movement and transportation now heavily depends on fossil fuel energy, and even basic heating and cooking process now depends on fossil fuel. Some of this activities rely on fossil fuel directly, or indirectly; by depending on power generated from power houses that generates electricity from the combustion of fossil fuels in huge generators. <em>The after effect of all these energy demand is that more CO2 than ever is constantly released into the atmosphere.</em>
Answer:
20 atoms
Explanation:
There are 4 in H2O2 because of 2 hydrogens and 2 oxygens.
Then, multiply by 5 because the coefficient is 5, therefore there are 5 H2O2 molecules.
5 x 4 = 20
Answer : The correct option is, (3) change states of matter.
Explanation :
Latent heat : It is defined as the heat required to convert the solid into liquid or vapor and a liquid into a vapor without changing the temperature.
There are two types of latent heat.
(1) Latent heat of fusion
(2) Latent heat of vaporization
Latent heat of fusion : It is defined as the amount of heat energy released or absorbed when the solid converted to liquid at atmospheric pressure at its melting point.
Latent heat of vaporization : It is defined as the amount of heat energy released or absorbed when the liquid converted to vapor at atmospheric pressure at its boiling point.
Hence, latent heat is used to change states of matter.
Answer:
20mL
Explanation:
density = mass / volume
0.3=6 / volume
volume = 6/0.3
volume =20mL
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Answer:
e, beacause that is the higher voltage
Explanation:
calculate