You can identify craters in four photographs
The answer is true. I just learned this in class
His principle is that we can either know the location or the speed of an electron at that specific moment but never both at once. So your answer is C.
10.53 grams is the theoretical yield of CaF2 for this experiment.
Explanation:
From the reaction it can be found that Ca reacts with excess of fluoride gas to form calcium fluoride. Thus, it can be concluded that calcium is limiting reagent as product formation depends on the concentration of calcium in the reaction as reactant.
The balanced chemical reaction is :
Ca + F2 ⇒ CaF2
Thus one mole of calcium reacted to form one mole of calcium fluoride.
Number of moles of calcium fluoride can be obtained by using the formula;
number of moles=
=
= 0.135 moles of CaF2 is formed.
So,
1 mole of calcium reacts to give 1 mole of CaF2
x moles of calcium will give 0.135 moles of CaF2
Hence, 0.135 moles of CaF2 is formed
the weight formed will be given as 0.135 x 78.07
= 10.53 grams
The theoretical yield is the amount of product formed by complete conversion of limiting reactant. Thus, 10.53 grams is the theoretical yield of CaF2 in the reaction.
<h2>ANSWER OF EACH PART ARE GIVEN BELOW</h2>
Explanation:
A)
We know, each mole contains atoms.
It is given that mass of one oxygen atom is m= .
Therefore, mass of one mole of oxygen, .
Putting value of n and ,
B)
Given,
Mass of water in glass=0.050 kg = 50 gm.
From above part mass of one mole of oxygen atoms = 16.0 gm.
Therefore, number of mole of oxygen equivalent to 50 gm oxygen
LEARN MORE :
Avogadro's number
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