Answer:
The number of sulfur atoms in 1 g of sulfur is:-
atoms
Explanation:
Avogadro’s number represent the number of the constituent particles which are present in one mole of the substance. It is named after scientist Amedeo Avogadro and is denoted by
.
Avogadro constant:-

Given atomic mass of sulfur = 32 u
Which means that:-
32 g of sulfur contains
of atoms
Also,
1 g of sulfur contains
of atoms
<u>So, The number of sulfur atoms in 1 g of sulfur is:-
atoms</u>
0.1 moles of chloride ions were involved in the reaction if 25.0 mL of a 2.00 M CaCl2 solution is used for the reaction.
Explanation:
Data given:
volume of Ca
= 25 ml 0r 0.025
molarity of the calcium chloride solution = 2M
number of chloride ions =?
Balance chemical reaction:
Ca + 2
⇒
number of moles in 25 ml is calculated as:
molarity = 
number of moles of calcium chloride = molarity x volume
putting the values in the equation:
number of moles = 2 x 0.025
= 0.05 moles of calcium chloride
1 mole of Ca
decomposes as 1 calcium ion and 2 chloride ions
so 0.05 moles will have x moles of chloride ion
= 
x= 0.1
0.1 moles of chloride ions will be involved in the reaction.
first you divide them together and get an answer of 10 then you times it by 5 and your answer is 50 ml
Answer:
18
Explanation:
(atomic number = protons) mass minus protons= neutrons.