First, we need to get the moles of Cl2 ( chlorine)
we can use the ideal gas formula to get n ( moles of gas) :
PV = nRT
when p is the pressure = 1.3 atm
and V is the volume = 25.8 L
R is the constant of the ideal gas = 8.314
T temperature in Kelvin = 293
∴ n = PV / RT
= 1.3 * 25.8 / 8.314* 293
= 0.0138 moles
according to the reaction equation:
2Na(s) +Cl2 → 2 NaCl
we can see from the balanced equation that the molar ration between Na & Cl2 = 2: 1
∴ moles of Na = moles of Cl2 / 2
= 0.0138 / 2
= 0.0069 moles
now, we have the moles of Na and by using the molar mass of Na = 22.99 g/mol
∴ Mass of Na = moles of Na * molar mass
= 0.0069 moles * 22.99
= 0.1586 g
Answer:
The law of conservation of mass states that in a closed system, mass is neither created nor destroyed during a chemical or physical reaction. The law of conservation of mass is applied whenever you balance a chemical equation.
Explanation:
According to the law of conservation of mass, the mass of the products in a chemical reaction must equal the mass of the reactants.
The law of conservation of mass is useful for a number of calculations and can be used to solve for unknown masses, such the amount of gas consumed or produced during a reaction.
It is applicable in a chemical when the the mass of the products in a chemical reaction is equal to the mass of the reactants.
But it is not applicable in a nuclear fusion as some of the mass is generated as energy.
Answer:
469 gallons
Explanation:
From the question given, we were told that:
For every 32 miles, 1 gallon of gasoline is consumed.
With the above information, we can obtain the number of gallon of gasoline consumed by a car per year i.e 15000 miles
This is illustrated below:
If 32 miles consumed 1 gallon of gasoline,
Therefore, 15000 miles will consume = 15000/32 ≈ 469 gallons of gasoline.
Therefore, 469 gallons of gasoline is consumed by the average car each year
The
Answer:
<h3>The answer is 7.47 g/cm³</h3>
Explanation:
The density of a substance can be found by using the formula
From the question
mass = 53.137 g
volume = 7.11 cm³
We have
We have the final answer as
<h3>7.47 g/cm³</h3>
Hope this helps you
