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2 years ago

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Which one of the following formulas represents an aldehyde?

1 answer:

Masteriza [31]2 years ago

8 0

The formula of Aldehyde is represented by <span>C2H4O. It has two atoms of Carbon, four atoms of hydrogen and one atom of oxygen. Aldehyde is an organic compound. It's organic because it contains carbon. It has a structure of R-CHO, that consists a carbonyl center bonded to R group and to hydrogen.</span>

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A sample of baking soda, naHCO3, always contains 27.37% by mass of sodium, 1.20% of hydrogen, 14.30% of carbon, and 57.14% of ox

Dvinal [7]

Answer: Law of definite proportion.

Explanation: Law of definite proportion states that any chemical compound consists of elements in a fixed ratio by their masses. This law is also known as Proust's Law.

We are given a chemical compound $NaHCO_3$

Assuming that the total mass of 1 mole of $NaHCO_3$ = 100 grams

where

Mass of Sodium = 27.37 grams

Mass of Hydrogen = 1.20 grams

Mass of Carbon = 14.30 grams

Mass of Oxygen = 57.14 grams

To Calculate the ratio of all the elements, we divide each of the masses by the lowest mass.

$\text{Mass ratio of Sodium}=\frac{27.37}{1.20}=22.80\approx 23$

$\text{Mass ratio of Hydrogen}=\frac{1.20}{1.20}=1$

$\text{Mass ratio of Carbon}=\frac{14.30}{1.20}=11.91\approx 12$

$\text{Mass ratio of Oxygen}=\frac{57.14}{1.20}=47.61\approx 48$

Mass ratio of elements in $NaHCO_3=Sodium:Hydrogen:Carbon:Oxygen$

Na : H : C : O = 23 : 1 : 12 : 48

For every $NaHCO_3$ compound, this mass ratio will always be constant.

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Answer:

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Which statement describes a strong acid?

masya89 [10]

Answer:

A

Explanation:

B describes a strong base, C just isn't true there are only 7 strong acids, D describes a weak acid

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An ate or ite at the end of a compound name usually indicates that the compound contains___________.

Ymorist [56]

Answer:

D

Explanation:

According to IUPAC nomenclature, a negative polyatomic ion has its name ending in 'ate' or 'ite'

As in carbonate (CO3^2-)

Arsenite (AsO3-)

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