Answer:
82.18% is the mass percentage of bromine in the original compound.
Explanation:
Mass of AgBr = 1.1166 g
Moles of AgBr =
According to reaction, 1 mole of AgBr is obtained from 1 mole of bromide ions , then 0.0059466 moles of AgBr will be formed from :
of bromide ions
Mass of 0.005939 moles of bromide ions :
0.0059466 mol × 79.90 g/mol = 0.4751 g
Mass of the sample = 0.5781 g
Mass percentage of bromine in sample :
82.18% is the mass percentage of bromine in the original compound.
<h3>A single replacement reaction, sometimes called a single displacement reaction, is a reaction in which one element is substituted for another element in a compound. The starting materials are always pure elements, such as a pure zinc metal or hydrogen gas, plus an aqueous compound</h3>
<h2>Hope this helps you ❤️</h2><h2>Mark me as brainliest ❤️</h2>
Answer:The answer is Rosalind Franklin
Explanation:It is the only option that would be correct because the last person had two people for Rosalind and James I think, but Rosalind is definitely the correct answer
Answer:
The SI system : The international system of units.
It is a scientific method of expressing the magnitudes or quantities of important natural phenomena.
<u>Benefits</u><u> </u><u>of </u><u>SI </u><u>system</u>
- It is a coherent system of units ( a system based on certain sets of fundamental units )
- It is a rational system of units ( it assigns only one unit to a particular physical quantity )
Answer:
1. The salt bridge completes the circuit of the voltaic cell to allow the flow of current
2. The porous divider performs the function of a salt bridge, hence a salt bridge is unnecessary in a single-beaker voltaic cell
Explanation:
1. The oxidation and reduction half cells of a voltaic cell are connected by the salt bridge in other to ensure that the internal circuit is electrically neutral, to avoid the rapid reaction to reach equilibrium conditions which affects results in preventing voltage drop in the voltaic cell.
The salt bridge also aids in charge accumulation
2. In a single-beaker voltaic cell with the compartments separated by a porous divider, the function of the porous divider is the same as that of the salt bridge, hence the salt bridge is unnecessary.