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navik [9.2K]
3 years ago
6

What is the damaging effect of sewage dumps on human health ?

Chemistry
1 answer:
vivado [14]3 years ago
4 0
The sewage dumps were toxic so it would effect the air and cause many help issues especially with lungs.
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How many grams of oxygen are required to react with 13.0 grams of octane (C8H18) in the combustion of octane in gasoline?
egoroff_w [7]

Grams of oxygen are required to react with 13.0 grams of octane (C8H18) in the combustion of octane in gasoline is 45.5g

Octane is a hydrocarbon which burns in gasoline in presence of oxygen according to the given balanced chemical equation,

2C₈H₁₈ + 25O₂------> 16CO₂ + 18H₂0

Molar mass of octane = 114.23g/mol

Molar mass of Oxygen = 32g/mol

According to the stiochiometry of the balanced equation the mole ratio of Octane and Oxygen is 2:25

2 mole of octane needs 25 mole of oxygen

1 mole of octane needs 12.5 moleof oxygen

114.23g of octane needs 400g of oxygen

13g   of octane  needs 45.5g of oxygen

Mass of oxygen needed =45.5g

Hence, the Mass of oxygen needed is 45.5g for the combustion of octane in gasoline.

Learn more about Octane here, brainly.com/question/21268869

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5 0
2 years ago
Balanced chemical equation for the standard formation reaction of solid sodium carbonate
kenny6666 [7]
CO2 + 2 NaOH → Na2CO3 + H2O
4 0
3 years ago
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What did the periodic table help scientists discover?
Monica [59]
They discovered that *elements* show increase in atomic numbers across the period.
8 0
3 years ago
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Which process is a chemical change? burning a match boiling water melting ice breaking glass
Nina [5.8K]

Answer:

Burning a match

Explanation:

A chemical change is where a substance is changed into one or more substances. Basically, a chemical change changes the form of a substance. While, a physical change such as ripping a piece of paper in half will still be a paper just in half(nothing is changed).

Hope this helps!!! PLZ MARK BRAINLIEST!!!

5 0
3 years ago
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a known mass of solute is dissolved in a known mass of water and the total volume is determined. The molar mass of the solute ca
kotykmax [81]

Explanation:

Properties of a solution which are dependent on the ratio of number of solute particles to the number of solvent molecules in a solution are known as colligative properties.

Lowering of vapor pressure and elevation in boiling point are basically two of the colligative properties which indirectly help to measure the molecular weight of a substance.

Thus, we can conclude that molar mass of the solute can be determined by measuring lowering of vapor pressure and elevation in boiling point.

5 0
3 years ago
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