Answer:
The mass of water is 14292.24 g
Explanation:
Given data:
Mass of cups and water = 142,99 g
Mass of cups = 6.76 g
Mass of water = ?
Solution:
Mass of cups + water = mass of cups + mass of water
Now we will rearrange the formula
mass of water = (Mass of cups + water) - mass of cups
Now we will put the values.
mass of water = 142,99 g + 6.76 g
mass of water = 14292.24 g
Thus mass of water is 14292.24 g.
The strongest type of intermolecular force present between NH2CH3 molecules is the Hydrogen bond
This is further explained below.
<h3>What is the strongest type of intermolecular force present between nh2ch3 molecules?</h3>
Generally, One definition of a hydrogen bond describes it as an electrostatic force of attraction between two electronegative atoms, one of which is a hydrogen atom that is covalently bound to a more electronegative "donor" atom or group and the other of which is an atom that bears a lone pair of electrons and is referred to as the hydrogen bond acceptor.
In conclusion, The hydrogen bond is the sort of intermolecular interaction that is the most powerful when it is present between NH2CH3 molecules.
Read more about Hydrogen bonds
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<h3><u>Answer and explanation;</u></h3>
Ideal gas law is the mathematical relationship among pressure, volume, temperature, and the number of moles of a gas.
The ideal gas law is given by;
PV=nRT, where
P is the Pressure
V is the volume of the gas.
n is the number of moles
R is the gas constant and
T is the temperature
Answer:
44.7 kWh
Explanation:
Let's consider the reduction of Al₂O₃ to Al in the Bayer process.
6 e⁻ + 3 H₂O + Al₂O₃ → 2 Al + 6 OH⁻
We can establish the following relations:
- The molar mass of Al is 26.98 g/mol.
- 2 moles of Al are produced when 6 moles of e⁻ circulate.
- 1 mol of e⁻ has a charge of 96468 c (Faraday's constant).
- 1 V = 1 J/c
- 1 kWh = 3.6 × 10⁶ J
When the applied electromotive force is 5.00 V, the energy required to produce 3.00 kg (3.00 × 10³ g) of aluminum is:
Answer: 3.01 x 10^24 atoms
Explanation:
Based on Avogadro's law:
1 mole of any substance has 6.02 x 10^23 atoms
So, 1 mole of SI = 6.02 x 10^23 atoms
5.0 moles = Z atoms
To get the value of Z, cross multiply:
(Z atoms x 1 mole) = (6.02 x 10^23 atoms x 5.0 moles)
Z atoms•1 mole = 30.1 x 10^23 atoms•moles
Divide both sides by 1 mole
Z atoms•1 mole / 1 mole = 30.1 x 10^23 atoms•moles / 1 mole
Z = 30.1 x 10^23 atoms
[Place Z in standard form
So, Z = 3.01 x 10^24 atoms]
Thus, there are 3.01 x 10^24 atoms in 5.0 moles in SI