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3 years ago

What is the key difference between element and compound

Chemistry

1 answer:

olga nikolaevna [1]3 years ago

3 0

Answer and Explanation:

DIFFERENCE BETWEEN ELEMENT AND COMPOUND :

An element is made up of same type of atoms whereas a compound is made up of different type of atoms.
A compound can be separated by chemical methods but an element can not be separated by chemical methods.
Example of element is Cu Fe C and example of compound is $CO_2\ NO_2 \ NH_3$ etc
Elements can not be split into different substances but compound can be splited into different substances

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True or false. the arrow labeled C represents a transfer of chemical energy to mechanical energy. explain why this is true or fa

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False, it’s not mechanical energy it’s thermal energy.

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2 years ago

Refer to the image please!

Ludmilka [50]

Answer:

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2 years ago

A cube has a mass of 42 grams and a volume of 15 cubic centimeters. What is it’s density?

deff fn [24]

Answer:

2.8g/cm³

Explanation:

Given parameters:

Mass of cube = 42g

Volume of cube = 15cm³

Unknown:

Density of the cube = ?

Solution:

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6 0

3 years ago

For many years chloroform (CHCl3) was used as an inhalation anesthetic in spite of the fact that it is also a toxic substance th

Debora [2.8K]

Hey there!:

Molar mass:

CHCl3 = ( 12.01 * 1 )+ (1.008 * 1 ) + ( 35.45 * 3 ) => 119.37 g/mol

C% = ( atomic mass C / molar mass CHCl3 ) * 100

For C :

C % = (12.01 / 119.37 ) * 100

C% = ( 0.1006 * 100 )

C% = 10.06 %

For H :

H% = ( atomic mass H / molar mass CHCl3 ) * 100

H% = ( 1.008 / 119.37 ) * 100

H% = 0.008444 * 100

H% = 0.8444 %

For Cl :

Cl % ( molar mass Cl3 / molar mass CHCl3 ):

Cl% = ( 3 * 35.45 / 119.37 ) * 100

Cl% = ( 106.35 / 119.37 ) * 100

Cl% = 0.8909 * 100

Cl% = 89.9%

Hope that helps!

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I believe it is D. 6 N

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3 years ago