Which class of lever do spoon and scissors belong to?
2 answers:
You might be interested in
Complete question:
A 5-m³ container is filled with 900 kg of granite (density of 2400 kg/m3). The rest of the volume is air, with density equal to 1.15 kg/m³. Find the mass of air and the overall (average) specific volume.
Answer:
The mass of the air is 5.32 kg
The specific volume is 5.52 x 10⁻³ m³/kg
Explanation:
Given;
total volume of the container, = 5 m³
mass of granite, = 900 kg
density of granite, = 2,400 kg/m³
density of air, = 1.15 kg/m³
The volume of the granite is calculated as;
The volume of air is calculated as;
The mass of the air is calculated as;
The specific volume is calculated as;
Answer : The maximum mass of carbon dioxide produced by the chemical reaction can be, 82.3 grams.
Solution : Given,
Mass of = 28 g
Mass of = 190 g
Molar mass of = 32 g/mole
Molar mass of = 30 g/mole
Molar mass of = 44 g/mole
First we have to calculate the moles of and
.
Now we have to calculate the limiting and excess reagent.
The balanced chemical reaction is,
From the balanced reaction we conclude that
As, 2 mole of react with 7 mole of
So, 0.933 moles of react with
moles of
From this we conclude that, is an excess reagent because the given moles are greater than the required moles and
is a limiting reagent and it limits the formation of product.
Now we have to calculate the moles of
From the reaction, we conclude that
As, 2 mole of react to give 4 mole of
So, 0.933 moles of react to give
moles of
Now we have to calculate the mass of
Therefore, the maximum mass of carbon dioxide produced by the chemical reaction can be, 82.3 grams.