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Sonja [21]
2 years ago
12

1. Which of the following indicates the number of protons?

Chemistry
2 answers:
Mars2501 [29]2 years ago
7 0
The correct answer is A
Leokris [45]2 years ago
6 0

Answer:

a)Atomic number

Explanation:

Element symbol signifies the element. For eg, Na is sodium. Mass number is the sum of protons and neutrons of an atom of an element. Atomic mass is the molar mass of the given element. Finally, atomic number is unique to each element because it signifies the number of protons of that element. EACH ELEMENT has their UNIQUE number of protons. For eg, atomic number of hydrogen is 1 because it has 1 proton, NO OTHER ELEMENT HAS ATOMIC NUMBER 1 because NO OTHER ELEMENT HAS 1 proton.

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Answer:

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Explanation:

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3 years ago
Sodium metal reacts with water to produce hydrogen gas.
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3 years ago
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Reacting 35.4 ml of 0.220 m agno3 with 52.0 ml of 0.420 m k2cro4 results in what mass of solid formed
laila [671]
Answer is: 1.29 grams <span>of solid formed.
</span>Chemical reaction: 2AgNO₃(aq) + K₂CrO₄(aq) → Ag₂CrO₄(s) + 2KNO₃(aq).
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n(K₂CrO₄) = 0.420 M · 0.052 L.
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7 0
2 years ago
Looking at the periodic table, which of these elements has the smallest atomic radius?
Sauron [17]
Helium
Remember: electron filling of atomic shell  ...
 The element which have electron in the lowest quantum shell will have the smallest atomic radius\

He:1s1   (Helium)

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8 0
2 years ago
If a substance has a density of 2.545g / mL how many grams would the substance weigh if the sample has a volume of 122.1 mL?
grin007 [14]

Answer: 310.7 grams

Explanation:

Multiply the two values so the units of mL cancel and you get grams

2.545*122.1 = 310.7 grams

4 0
3 years ago
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