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tatiyna
3 years ago
8

Which statement is correct? Oxygen has more protons than chlorine. Iron has more protons than silver. Sodium has more protons th

an carbon. Hydrogen has more protons than helium.
Chemistry
1 answer:
defon3 years ago
7 0

Sodium has more protons than carbon

Explanation:

The correct statement of all is that sodium has more protons than carbon. Other statements are wrong.

  • Protons are positively charged particles in an atom
  • They are massive particles that are found in the tiny nucleus along with the neutral neutrons.
  • The number of protons in an atom is called the atomic number.
  • The atomic number of sodium is 11 and that of carbon is 6.
  • Since the number of protons is the same as the atomic number, we conclude that indeed sodium has more protons than carbon.

Learn more:

Atomic number brainly.com/question/2057656

Atomic number brainly.com/question/5425825

#learnwithBrainly

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Why does the reactivity of nonmetals increase moving left to right on the periodic table?
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Answer: This is because the number of shell increases .

Explanation: On moving from left to write on the periodic table the reactivity of non metals increases because number of shells increases and the force with which the nucleus hold electrons decreases.

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1 year ago
How do i find how many inches are in 2.5 ft
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3 years ago
1. A chemist prepares hydrogen fluoride by means of the following reaction:
Natasha_Volkova [10]

Answer:

a) <em>Theoretical Yield of HF = 5.64 grams</em>

b) <em>Percentage Yield = 39%</em>

Explanation:

Reaction Given:

CaF2 + H2SO4 -> CaSO4 + 2HF

CaF2 = 11g

H2SO4 = Used in excess

HF = 2.2 g production = Actual Yield

So, Let's write down the molar masses:

Molar Mass of CaF2 = 78 g /mol

Molar Mass of HF = 20 g/mol

From the reaction, we can see the 1 mole of CaF2 gives the 2 moles of HF

i.e

a) Theoretical Yield of HF:

1 mole CaF2 = 2 moles HF

78 g CaF2 = 2 x 20 g of HF

78 g CaF2 = 40 g of HF

1 g CaF2 = 40g/78g of HF

And in the question it is given that chemist used 11 g of CaF2 so,

1 x 11 g of CaF2 = 11 x 40/78 g of HF

11 g of CaF2 = 440/78 g of HF

11 g of CaF2 = 5.64 g of HF

And this is the theoretical yield

<em>Theoretical Yield of HF = 5.64 grams</em>

b) Now, calculate the Percentage Yield of HF

<em>Percentage Yield = Actual Yield /Theoretical Yield x 100</em>

Percentage Yield = 2.2 g /5.64 g x 100

Percentage Yield = 39%

8 0
3 years ago
How could you safely determine if a base is stronger than an acid?
expeople1 [14]
You should never taste anything in a lab.
Litmus paper will only tell you whether it is an acid or a base, not how strong it is a hydrogen test only works with acids.
You can get a serious burn from touching strong acids and bases and it doesn't give an objective measure of the strength.
The only one that is left is conductivity. This is safe and rather reliable, because the "strength" of an acid or a base depends on how much it dissociates. Hence more dissociation means greater conductivity.
6 0
3 years ago
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