Answer:
1. open
2. open
Explanation:
1. An open system can exchange energy and matter.
2. The ocean is known to be an open system.
<span>Balance the equation
8Zn + S8 -----> 8ZnS
work out how much ZnS is possible if all of each reagent were to react. The reagent that produces the least product is the limiting reagent.
moles Zn = mass / molar mass = 4.88 g / 65.38 g/mol = 0.07464 moles
8 moles Zn reacts to form 8 moles ZnS
Therefore moles ZnS possible = moles Zn = 0.07464 moles
moles S8 = 5.03 g / 256.48 g/mol = 0.01961 mol
1 mole S8 reacts to form 8 moles ZnS
Therefore moles ZnS possible = 8 x moles S8 = 0.1569 mol
The amount of Zn provided gives the least ZnS, therefore Zn is the limiting reagent.
The theoretical yield is the maximum possible yield possible from the reagents provided. It is the amount of product that will form if all the limiting reagent reacts.
So in this case 4.88 g Zn yields 0.07464 mol ZnS
theoretical mass ZnS = molar mass x moles
= 97.44 g/mol x 0.07464 mol
= 7.27 g
% yield = actual yield / theoretical yield x 100/1
= 6.02 g / 7.27 g x 100/1
= 82.8 %</span>
Answer:
0.0006 mole
Explanation:
Considering:
Or,
Given :
For HCl :
Molarity = 0.100 M
Volume = 6.0 mL
The conversion of mL to L is shown below:
1 mL = 10⁻³ L
Thus, volume = 6.0×10⁻³ L
Thus, moles of potassium iodide :
Moles of HCl = 0.0006 moles
From the reaction shown below:-
1 mole of HCl reacts with 1 mole of sodium carbonate.
So,
0.0006 mole of HCl reacts with 0.0006 mole of sodium carbonate.
<u>Moles of sodium carbonate = 0.0006 moles</u>
A. There is very little empty space in a gas in not part of the kinetic molecular theory of gases.
Explanation:
The kinetic molecular theory of gases follows following points:
Kinetic energy does not change or get dissipated when gas molecules collide with each other. No attraction or repulsion between gas particles is observed. Particles of gas are moving randomly in all directions. Temperature increase cause the rapid movement of gas particles.The gas particles are placed very far from each other as compared to liquid.
The empty space in a gas is large because gas gets compressed in the small volume of the container also.
Answer:
x means unknown it is an unknown value.
For example if you have 2 x you have 2 u know values.
Explanation:
If you want us to explain it further please provide a picture.
