Answer: D) g
Explanation: The question asks to convert formula unit to grams. It is a unit conversion problem.
1 mole equals to Avogadro number of formula units. So, to convert the given number of formula units to moles, we need to divide by the Avogadro number. After this, we do moles to grams conversion and for this the moles are multiplied by the molar mass of the compound. Molar mass of AgCl is 143.32 gram per mol.
= g
So, the correct option is D) g
Answer:
The time taken for the cross mark to disappear decreases steadily down the column.
Explanation:
Now if we look at the data provided, we will discover that the volume of the HCl was held constant while the volume of the thiosulphate was increased steadily and the volume of water decreased steadily.
Recall that a system is more concentrated when it contains less volume of water and more volume of reactants. Hence as the volume of water in the system is being reduced, the concentration of reactants is increased.
It has been established that an increase in the concentration of reactants lead to an increase in the rate of reaction. The disappearance of the cross shows the completion of the reaction between HCl and thiosulphate. The faster or slower the cross disappears, the faster or slower the rate of reaction.
Since increase in concentration of reactants increases the rate of reaction, it is observed that as the volume of the thiosulphate increases (reactant concentration increases) the cross disappears faster (rate of reactant increases). Hence as the volume of thiosulphate increases, it takes a shorter time for the cross to disappear. This implies that the time column in the table (refer to the question) will decrease steadily as the volume of thiosulphate increases.
Answer:
A. Samuel
Explanation:
although he is not right he gets the same measurement several times
Answer:
Directly proportional:
A proportion of two variable quantities. when the ratio of two quantities are constant.
inversely proportional:
when one value decreases at the same rate that the other increases.
Explanation:
I hope this does help you, have a great day. :)
Answer : The image is attached below.
Explanation :
For :
Molar mass, M = 48 g/mol
Mass, m = 24 g
Moles, n =
Number of particles, N =
For :
Molar mass, M = 17 g/mol
Mass, m = 170 g
Moles, n =
Number of particles, N =
For :
Molar mass, M = 38 g/mol
Mass, m = 38 g
Moles, n =
Number of particles, N =
For :
Molar mass, M = 44 g/mol
Moles, n = 0.10 mol
Mass, m =
Number of particles, N =
For :
Molar mass, M = 46 g/mol
Moles, n = 0.20 mol
Mass, m =
Number of particles, N =
For :
Molar mass, M = 20 g/mol
Number of particles =
Moles, n =
Mass, m =
For :
Molar mass, M = 44 g/mol
Number of particles =
Moles, n =
Mass, m =
For unknown substance:
Number of particles =
Mass, m = 8.5 g
Moles, n =
Molar mass, M =
The substance is .