Answer: 122 moles
Procedure:
1) Convert all the units to the same unit
2) mass of a penny = 2.50 g
3) mass of the Moon = 7.35 * 10^22 kg (I had to arrage your numbers because it was wrong).
=> 7.35 * 10^22 kg * 1000 g / kg = 7.35 * 10^ 25 g.
4) find how many times the mass of a penny is contained in the mass of the Moon.
You have to divide the mass of the Moon by the mass of a penny
7.35 * 10^ 25 g / 2.50 g = 2.94 * 10^25 pennies
That means that 2.94 * 10^ 25 pennies have the mass of the Moon, which you can check by mulitiplying the mass of one penny times the number ob pennies: 2.50 g * 2.94 * 10^25 = 7.35 * 10^25.
5) Convert the number of pennies into mole unit. That is using Avogadros's number: 6.022 * 10^ 23
7.35 * 10^ 25 penny * 1 mol / (6.022 * 10^ 23 penny) = 1.22* 10^ 2 mole = 122 mol.
Answer: 122 mol
Answer:
ano po yan? hind ko po maintindihan
Simply saying, enthalpy is the measure of heat content of a system at constant pressure. Thus it is the thermodynamic potential of a system, which is obtained by summing internal energy(U) & Product of pressure(p) & volume(V) of a system.
Answer:
0.229 M/s is molecular nitrogen reacting
Explanation:
Rate of the reaction :
![R=-\frac{1}{1}\frac{d[N_2]}{dt}=-\frac{1}{3}\frac{d[H_2]}{dt}=\frac{1}{2}\frac{d[NH_3]}{dt}](https://tex.z-dn.net/?f=R%3D-%5Cfrac%7B1%7D%7B1%7D%5Cfrac%7Bd%5BN_2%5D%7D%7Bdt%7D%3D-%5Cfrac%7B1%7D%7B3%7D%5Cfrac%7Bd%5BH_2%5D%7D%7Bdt%7D%3D%5Cfrac%7B1%7D%7B2%7D%5Cfrac%7Bd%5BNH_3%5D%7D%7Bdt%7D)
Rate at which hydrogen gas is reaction :
![\frac{d[H_2]}{dt}=0.0687 M/s](https://tex.z-dn.net/?f=%5Cfrac%7Bd%5BH_2%5D%7D%7Bdt%7D%3D0.0687%20M%2Fs)
Rate at which hydrogen gas is reaction :
![\frac{d[N_2]}{dt}=?](https://tex.z-dn.net/?f=%5Cfrac%7Bd%5BN_2%5D%7D%7Bdt%7D%3D%3F)
![-\frac{1}{1}\frac{d[N_2]}{dt}=-\frac{1}{3}\frac{d[H_2]}{dt}](https://tex.z-dn.net/?f=-%5Cfrac%7B1%7D%7B1%7D%5Cfrac%7Bd%5BN_2%5D%7D%7Bdt%7D%3D-%5Cfrac%7B1%7D%7B3%7D%5Cfrac%7Bd%5BH_2%5D%7D%7Bdt%7D)
![\frac{d[N_2]}{dt}=\frac{1}{3}\times 0.0687 M/s](https://tex.z-dn.net/?f=%5Cfrac%7Bd%5BN_2%5D%7D%7Bdt%7D%3D%5Cfrac%7B1%7D%7B3%7D%5Ctimes%200.0687%20M%2Fs)
0.229 M/s is molecular nitrogen reacting
Answer:
The desirable characteristic of Barium suspension are:
<u>Thick layering</u>
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Explanation:
First know the meaning of the terms :
1. Rapid flow
2. Thick layering
3. Good mucosal adhesion\
1. Rapid flow : The lower the viscosity of the solution , more is its flow in the solution. For example : Honey has more viscosity so it flows slowly . On the other hand water flow faster.
2. Thick layering : layering is the deposition of one layer of the liquid over other. The deposited layer can be of different substance.
3. Mucosal Adhesion : It is the adhesion(attraction) between two materials ,one of which is mucous.It is attractive force between the drug and the mucus inside the body.
Barium suspension:
<em>It is not a Good mucosal adhesion material because of low solubility in water and lipid .</em>
<em>Only those solution are good in adhesion which have higher solubility in water.</em>
It is widely used as the contrast media for the examination of gastrointestinal because of its <u>Thick Layering Property. It has the consistency of thick glass . At room temperature it is called "warm thick milk"</u>
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