Answer:
Explanation:
A mole is any quantity of a substance that contains 6.02 × 10²³ particles. At standard temperature and pressure, or STP, 1 mole of as is equal to 22.4 liters. This is true for any gas, regardless of the specific kind.
Although it is not specified, we can assume this gas is at STP. Let's set up a ratio using this information: 22.4 L/mol
Multiply by the given number of liters: 12
Flip the ratio so the liters of chlorine cancel.
The original measurement of liters has 2 significant figures, so our answer must have the same.
For the number we found, that is the hundredth place.
The 5 in the thousandth place tells us to round the 3 up to a 4.
12 liters of chlorine gas at STP is approximately <u>0.54 moles of chlorine gas.</u>
I think it is because it has an even number of valence electrons.
Answer : The correct options are :
2) car A and car B are moving in opposite direction.
3) car A is moving faster than the car B.
Explanation :
From the given position-time graph, we conclude that the car A shows positive slope and the car B shows negative slope. That means the object which has positive slope will move faster as compared to the object with negative slope.
In case of Car A, it is moving towards the positive direction of the position axis whereas Car B is moving towards the negative direction of the position axis which means that both cars are moving in opposite direction.
So, the car A is moving faster than the car B and both cars are moving in opposite direction.
Answer:
0.32×10⁻³ mol
Explanation:
Given data:
Number of atom of gold(II) chloride = 1.9×10²⁰ atoms
Number of moles = ?
Solution:
Avogadro number:
The given problem will solve by using Avogadro number.
It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.
The number 6.022 × 10²³ is called Avogadro number.
1 mole = 6.022 × 10²³ atoms
1.9×10²⁰ atoms × 1 mol / 6.022 × 10²³ atoms
0.32×10⁻³ mol
鸡蛋鸡蛋觉得很多很多很多很多很多别的办法和很大的缓和和更高的规定的很多很好的不得不
