Chemical reactions are the molecular and ionic rearrangement of the reactants to form products. The order of the reactions is combustion, photosynthesis and respiration.
<h3>What are the types of reactions?</h3>
A <u>combustion reaction</u> is a chemical reaction in which the reactant reacts in the presence of oxygen to yield the products and some amount of heat and energy. Burning of the fossil fuels in the presence of atmospheric oxygen is the combustion reaction.
<u>Photosynthesis </u>is a biochemical reaction that occurs in the presence of solar energy that converts carbon dioxide and water to produce sugars and oxygen in plant cells. Tomato plantation is an example of photosynthesis.
<u>Respiration </u>is a process by which the organism utilizes food and oxygen as energy sources required by the body to function and perform activities. Eggs are the source of the energy and are a respiration reaction.
Therefore, the order of the reactions is combustion, photosynthesis and respiration.
Learn more about chemical reactions here:
brainly.com/question/10026513
Explanation:
We have to find the number of molecules that are present in 0.54 g of Ca(NO₃)₂.
First we have to convert the mass of our sample into moles of Ca(NO₃)₂. We will use the molar mass of Ca(NO₃)₂ to do that.
molar mass of Ca = 40.08 g/mol
molar mass of N = 14.01 g/mol
molar mass of O = 16.00 g/mol
molar mass of Ca(NO₃)₂ = 1 * 40.08 g/mol + 2 * 14.01 g/mol + 6 * 16.00 g/mol
molar mass of Ca(NO₃)₂ = 164.10 g/mol
mass of Ca(NO₃)₂ = 0.54 g
moles of Ca(NO₃)₂ = 0.54 g * 1 mol/(164.10 g)
moles of Ca(NO₃)₂ = 0.00329 moles
According to Avogadro's number there are 6.022 *10^23 molecules in 1 mol of molecules. We can use that relationship to find the number of molecules that are present in our sample.
6.022 *10^23 molecules = 1 mol
molecules of Ca(NO₃)₂ = 0.00329 moles * 6.022 *10^23 molecules/(1 mol)
molecules of Ca(NO₃)₂ = 2.0 * 10^21 molecules
Answer: there are 2.0 * 10^21 molecules of Ca(NO₃)₂ in 0.54 g of it.
Answer:
HF
Explanation:
Hf has hydrogen bonding which is the strongest intermolecular forces. The stronger the IM forces, the higher the boiling point.
Answer:
It is A
Explanation:
If you think about it, no-polar covalent bonds are in a symmetrical line, and polar bonds are on the diagonals of the center atom.
I hope I helped :)
By increasing atomic number
