For 23., you have to find a way to measure your heart rate not increase it. search it up on google.
Well the sun wouldn't be up yet it would be dark and when you wouldn't be able to see it they would see it in the sky
<h3>Answer</h3>
The chemicals that acid rain contains can have damaging effects on objects like buildings, monuments, statues, and cars.
Its components can make paint to be peel, stone construction appears old, worn down which reduces the architectural value and beauty.
<h2>Explanation</h2>
Depending on how acidic the rain is, it can obliterate these constructions to a brutal degree.
First, components like sulfurous, sulfuric and nitric acids mix with air and rain. Then they react with calcite or calcium-based compounds in marble and limestone and dissolve calcite.
The dry depositions of acidic particles contribute severely to the corrosion of construction materials, building paints, stones like marble, limestones and various type of granites.
Acid rains aggravate the life value of buildings and architectural structures.
Five base SI units that are commonly used in Chemistry; are
1.Metre (m)
2. Kilogram(kg)
3. seconds(s)
4.Kelvins (k)
5. Moles (mol)
Answer:
D: Decomposition Reaction
Explanation:
A decomposition reaction is a reaction in which a compound breaks down into two or more simpler substances.
The general form of a decomposition reaction is: AB -> A+B.
You just split the nonmetals into a molecule depending on the element.
But they are rules though when doing this reaction. If a element is a diatomic molecule, then you would write a 2 in the subscript.
Diatomic molecules contain two atoms that are chemically bonded
<h3>The 7 diatomic elements are: </h3><h3>H: Hydrogen H2</h3><h3>N: Nitrogen N2</h3><h3>F: Fluorine F2</h3><h3>O: Oxygen O2</h3><h3>I: Iodine I2</h3><h3>C: Carbon C2</h3><h3>B: Bromine B2</h3>
Now let us go back to this problem: 2H2O -> 2H2 + O2
So water or 2H2O split into 2H2 and O2 because hydrogen and oxygen are diatomic elements.
That is how you write the product of a decomposition reaction.
Hope it helped!
