Answer:
6. 25.8 mL.
7. 16.4 mL.
8. 24.0 mL.
Explanation:
6. Determination of the volume of HCl.
Mass = 30 g
Density = 1.164 g/mL
Volume =..?
Density = mass /volume
1.164 = 30 / volume
Cross multiply
1.164 × volume = 30
Divide both side by 1.164
Volume = 30 / 1.164
Volume = 25.8 mL
7. Determination of the volume of H2SO4.
Mass = 30 g
Density = 1.834 g/mL
Volume =..?
Density = mass /volume
1.834 = 30 / volume
Cross multiply
1.834 × volume = 30
Divide both side by 1.834
Volume = 30 / 1.834
Volume = 16.4 mL
8. Determination of the volume of HNO3.
Mass = 30 g
Density = 1.251 g/mL
Volume =..?
Density = mass /volume
1.251 = 30 / volume
Cross multiply
1.251 × volume = 30
Divide both side by 1.251
Volume = 30 / 1.251
Volume = 24.0 mL
Do u have a picture if so post it please
<span>Because you've added coefficients to the molecules on the right side of the equation, the number of oxygen atoms has changed. ...Add a coefficient of 5 to the oxygen molecule on the left side of the equation. ...<span>C3H8 + 5O2 --> 4H2O + 3CO2.</span><span>The carbon, hydrogen, and oxygen atoms are balanced</span></span>
Answer:
molecules in a substance move around relative to each other
Explanation:
It means that molecules of a substance are mobile or locomotive or localised.
such as gases
Answer:
The mass is
Explanation:
From the question we are told that
The volume of oxygen produced is
The temperature is
The pressure is
From the ideal gas law we have that
Where R is the gas constant with the value
n is the number of moles making it the subject of the formula
Substituting values
From the chemical equation
one mole of produces one mole of kCl and of oxygen
x mole of produces x mole of kCl and of oxygen
So
Now the molar mass of KCl is a constant with a value
Now the mass of KCl is mathematically evaluated as
Substituting values