Answer:
An increase in temperature causes a rise in the energy levels of the molecules involved in the reaction, so the rate of the reaction increases. Similarly, the rate of reaction will decrease with a decrease in temperature.
Explanation:
Because it is used for building - making concrete and cement - and the manufacture of glass, steel and iron.
1.05moles
Explanation:
Given parameters:
Number of molecules of C₂H₆ = 6.29 x 10²³molecules
Unknown:
Number of moles = ?
Solution:
The mole is the amount of substances that contains Avogadro's number of particles i.e 6.02 x 10²³
To find the number of moles:
number of moles =
number of moles =
number of moles = 1.05moles
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Answer: -
10.5% is the Weight / weight % or percent by mass of sodium sulfate
Explanation: -
Mass of sodium sulfate = 11.2 g
Mass of water = 95.0 g
Total mass of the solution = Mass of sodium sulfate + Mass of water
= 11.2 + 95.0 = 106.2 g
Weight / weight % or percent by mass of the solute = (Mass of sodium sulfate / Total mass of the solution) x 100
=
= 10.5 correct to 3 significant figures.
Explanation:
According to the ideal gas equation, PV = nRT.
where, P = pressure, V = volume
n = no. of moles, R = gas constant
T = temperature
Also, density is equal to mass divided by volume. And, no. of moles equals mass divided by molar mass.
Therefore, then formula for ideal gas could also be as follows.
P =
or, P =
Since, density is given as 0.789 g/ml which is also equal to 789 g/L (as 1000 mL = 1 L). Hence, putting the given values into the above formula as follows.
P =
=
= 525 atm
As two-liter soft drink bottle can withstand a pressure of 5 atm and the value of calculated pressure is 525 atm which is much greater than 5 atm.
Therefore, the soft drink bottle will obviously explode.