List the following substance in order from lowest density to highest density iron, gold, steel, water , air , silver and aluminu
2 answers:
Answer : The order of density from lowest density to highest density will be:
water < air < aluminum < steel < iron < silver < gold
Explanation :
Density : It is defined as the mass contained per unit volume.
Formula for density :
From this we conclude that, the density depends on mass and volume of substance.
As we know that the density is an intensive property because it does not depend upon the amount of substance. It remains same.
That means, for every substance the density always fixed. So,
The density of iron = 7.86 g/mL
The density of gold = 19.3 g/mL
The density of steel = 7.8 g/mL
The density of water = 1.00 g/mL
The density of air = 1.29 g/mL
The density of silver = 10.5 g/mL
The density of aluminium = 2.70 g/mL
From this we conclude that, the order of density from lowest density to highest density will be:
water < air < aluminum < steel < iron < silver < gold
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grams of neutrons:
=1.00811 amu
b.) The mass in grams of one lithium ion which has an atomic weight of 6.94 amu.
= 
c.) How many amu in 6.492x10^-23g potassium?
= 39.0957 amu
To know how many amu in
=1.00811 amu
b.) The mass in grams of one lithium ion which has an atomic weight of 6.94 amu.
c.) How many amu in 6.492x10^-23g potassium?
Answer:
Explanation:
Given:
For a school event, 1/6 of the athletic field is reserved for the fifth -grade classes and the reserved part of the field is divided equally among the 4 fifth grade classes in the school.
To find: fraction of the whole athletic field reserved for each fifth class
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Hello!
To solve this question, we need to use the Avogadro's Number, which is a constant first discovered by Amadeo Avogadro, an Italian scientist. He discovered that in a mole of a substance, there are 6,02*10²³ molecules. Using this relationship, we apply the following conversion factor:
So, 8,50 * 10²⁴ molecules of Na₂SO₃ represent 14,12 moles of Na₂SO₃
Have a nice day!
To solve this question, we need to use the Avogadro's Number, which is a constant first discovered by Amadeo Avogadro, an Italian scientist. He discovered that in a mole of a substance, there are 6,02*10²³ molecules. Using this relationship, we apply the following conversion factor:
So, 8,50 * 10²⁴ molecules of Na₂SO₃ represent 14,12 moles of Na₂SO₃
Have a nice day!