Valency- it means the combing capacity if an element.
<span> radical- it  is an atom, molecule, or ion that has unpaired valence electrons or an open electron shell.
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Answer:
According to avogadro's law, 1 mole of every substance contains avogadro's number  of particles and weighs equal to its molecular mass.
 of particles and weighs equal to its molecular mass.
To calculate the moles, we use the equation:
 
 
a. moles in 14.08 g of  =
 = 
molecules in 14.08 g of  =
 = 
b. moles in 17.75 g of NaCl = 
molecules in 17.75 g of  =
 = 
formula units 17.75 g of  =
 = 
c. moles in 20.06 g of   =
= 
formula units in 20.06 g of   =
= 
 
        
             
        
        
        
<span>0.48 grams.
Not a well worded question since it's assuming I know the reactions. But I'll assume that since there's just 1 atom of copper per molecule of Cu(NO3)2, that the reaction will result in 1 atom of copper per molecule of Cu(NO3)2 used. With that in mind, we will have 0.010 l * 0.75 mol/l = 0.0075 moles of copper produced.
To convert the amount in moles, multiply by the atomic weight of copper, which is 63.546 g/mol. So
0.0075 mol * 63.546 g/mol = 0.476595 g.
Round the results to 2 significant figures, giving 0.48 grams.</span>
        
             
        
        
        
The number of beats  the person have in 1.7 years is  6.7 x 10⁷ beats.
<h3>
Number of beats of the person</h3>
The number of beats of the person is calculated as follows;
n = bt
where;
- b is the beat rate
- n is number of beats
- t is time or duration
 b = 75 beats/min
t = 1.7 years = 893520 mins
n = 75 beats/min x 893520 mins
n = 67,014,000
n = 6.7 x 10⁷ beats
Thus, the number of beats  the person have in 1.7 years is  6.7 x 10⁷ beats.
Learn more about number of beats here: brainly.com/question/28245460
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