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Mademuasel [1]
3 years ago
7

What do the numbers listed for an element on the periodic table represent?. Answer. . The number with a higher value is the numb

er of protons and the number with a lower value is the number of neutrons.. . The number with a higher value is the number of electrons and the number with a lower value is the number of protons.. . The number with a higher value is the mass and the number with a lower value is the number of protons.. . The number with a higher value is the number of protons and the number with a lower value is the mass.
Chemistry
2 answers:
DochEvi [55]3 years ago
4 0
Higher value- mass number
Lower value- atomic number/ number of proton
Sindrei [870]3 years ago
3 0
"The number with a higher value is the mass and the number with a lower value is the number of protons" is the one among the following choices given in the question that defines the <span>numbers listed for an element on the periodic table. The correct option among all the options that are given in the question is the third option.</span>
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How many liters of O2 gas will be produced at STP from 4 moles of KC1O3
quester [9]

Answer:

V = 134.5 L

Explanation:

Given data:

Number of moles of KClO₃ = 4 mol

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Solution:

Chemical equation:

2KClO₃  →  2KCl   + 3O₂

Now we will compare the moles of KClO₃ with oxygen.

                    KClO₃        :           O₂

                        2            :           3

                        4            ;          3/2×4 = 6 mol

Litters of oxygen at STP:

PV = nRT

V = nRT/P

V = 6 mol × 0.0821 atm.L/mol.K × 273 K / 1atm

V = 134.5 L / 1

V = 134.5 L

5 0
3 years ago
An athlete can run 9 kilometers in 1 hour. If the athlete runs at that same average speed for 30 minutes, how far will the athle
ASHA 777 [7]
The answer to the problem is 4.5 kilometers. you can solve this problem by cross multiplying
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2 years ago
Which Bond is the Least Polar? <br><br> a) H-O <br> b) H-F<br> c) H-I<br> d) H-H
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Which of the following solutions represents a good buffer system? a solution that is 0.10 mol L-1 NaOH and 0.10 mol L-1 KOH a so
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Acid indigestion is sometimes neutralized with an antacid such as magnesium hydroxide (Mg(OH)2). What products will be released
NemiM [27]

Answer:

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Explanation:

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