Acid rain is caused by human activity. true or false?
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Explanation:
Acid rain is caused due to increase in nitrogen oxide and sulfur oxide into the atmosphere.
The amount of these oxides increases into the atmosphere due to increase in pollution.
Therefore, pollution is caused by humans. For example, pollution from sources like vehicles, industries, factories, labs etc leads to increase in the development of harmful gases.
Thus, the statement acid rain is caused by human activity is true.
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The transfer of a section of Dna from one organism into the Dna of another organism by scientists is called
Select all (there's more than one) of the below chemicals that would be insoluble in water.aNH4OHbNaNO3cPbCrO4dSrSO4eK3PO4fAgClO4gHgCl2hFeCO3iNH4BrjLi2Cr2O7
HELP!!!! I HAVE 2 MINUTES!!!A substance placed into an open plastic container at room temperature exerts a force against the bottom of the container but not the sides of the container. What is the most likely phase of this substance?A. gasB. solidC. liquidD. plasma
What is the mass of 4.23×10^23 atoms of iron
Answers
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Answer: is considered as the limiting reagent for this reaction.
Explanation:
Limiting reagent is the reagent which limits the formation of the product.
Excess reagent is the reagent which is present in excess in a chemical reaction.
For the combustion of acetylene, the reaction follows:
By Stoichiometry,
5 moles of oxygen gas reacts with 2 moles of acetylene.
So, 81 moles of oxygen gas will react with = = 32.4 moles of acetylene.
As, the required amount of acetylene is less than the given amount. So, it is considered as an excess reagent and oxygen gas is the limiting reagent.
Answer:
Oxygen is the limiting reactant of this reaction.
Explanation:
2 moles of acetylene reacts with 5 moles of oxygen.
Then 37 moles of acetylene will react with :
of oxygen gas.
But only 81 moles of oxygen gas is present.
Then 81.0 moles of oxygen gas will react with:
of acetylene.
And still acetylene will remain after.
So, from the above calculation we cans see that oxygen is present in limiting amount which will limit the reaction.Hence, the limiting reactant of this reaction is oxygen.
a. Polystyrene
b. Nylon
c. Sucrose
d. PVC
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The answer is: sucrose.
Polystyrene, nylon and PVC are examples of a polymer.
Sucrose or table sugar (C₁₂O₂₂O₁₁) composed of two monosaccharides. This monosaccharides glucose and fructose are linked with an ether bond between C1 on the glucosyl subunit and C2 on the fructosyl unit.
Polystyrene is a synthetic aromatic hydrocarbon polymer made from the monomer styrene.
Styrene (ethenylbenzene) is an organic compound with the chemical formula C₆H₅CH=CH₂. It is a colorless oily liquid.
Plastic PVC is organic polymers of high molecular mass derived from petrochemicals.
Final answer:
Among Polystyrene, Nylon, PVC, and Sucrose, the compound that is not a polymer is Sucrose because it is a smaller, simple molecule comprised of two monosaccharides and does not have a long chain of repeating units.
Explanation:
In considering the options provided, Polystyrene, Nylon, and PVC are all polymers. Polymers are made up of many similar units or monomers, and they typically have high molecular weights. Polystyrene, Nylon, and PVC, which stands for Polyvinyl Chloride, are large molecules made up of repeating subunits. The only one which does not fit this particular basis is Sucrose.
Sucrose, commonly known as table sugar, is a small, simple molecule. It is a disaccharide, meaning it is composed of two monosaccharides, glucose and fructose. Therefore, it is not a polymer because it does not contain a long chain of repeating units.
Learn more about Polymer here:
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It increases the collisions per minute.
It increases the average kinetic energy of the particles.
It increases the kinetic energy and the collisions per minute.
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Catalysts lower the activation energy of a chemical reaction. Catalyst is a substance that speeds a chemical reaction. It is not consumed as the reaction proceeds. A catalyst offers a new route for faster reaction.
b)liquid
c)solid
d)gas
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Because it is a state of matter consist of particles that have a defined volume or shape.
THANK YOU
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Ca(NO3)2 - Calcium nitrate (The symbol for calcium is Ca, next is NO which is nitrate and the 3 means that there are 3 Nitrate compounds..I am not 100% sure what the 2 means at the end, but I am guessing it means that there are 2 calcium nitrate compounds in all.)
MgCO3 - Magnesium carbonate
Na3PO4 -Trisodium phosphate
LiNO3 - Lithium Nitrate
Mg(C2H3O2)2 - Magnesium acetate
Alright, so to do this, you need to know the name of the elements and compounds, since all of these are ionic compounds which have different naming rules than covalent compounds, all you need is a periodic table and an ion chart. I'll do the first column.
A. Calcium Nitrate
B. Potassium Hydroxide
C. Magnesium Carbonate.
I also am including a picture of an ion chart that include almost all of the ions to help you with the rest of them.