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3 years ago

Which of the following are likely to form a covalent bond?

Chemistry

2 answers:

ohaa [14]3 years ago

6 0

Answer: The correct answer is Option C.

Explanation:

A covalent bond is defined as the bond which is formed when sharing of electrons takes place between the atoms forming a compound. This type of bond is usually formed between two non-metals.

From the given options:

Option A: two gold atoms

Gold atom is a metal and thus, will not form covalent bond.

Option B: two neon atoms

Neon atom is a noble gas and is unreactive atom. Thus, it will not form covalent bond.

Option C: hydrogen and oxygen atoms

Both the atoms are non-metals and thus, will lead to the formation of a covalent bond.

Option D: magnesium and bromine atom

Magnesium atom is a metal and bromine atom is a non-metal. Thus, they will not lead to the formation of covalent bond but will form ionic bond.

Hence, the correct answer is Option C.

Alex17521 [72]3 years ago

5 0

C) hydrogen and oxygen atoms

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CaCO3 → CaO + CO2 Calculate the theoretical yield of Calcium Oxide if 24.8 grams of Calcium Carbonate decomposes. Calculate the

RideAnS [48]

Answer:

Theoretical yield: 13.9 g

Percent yield: 94 %

Explanation:

The reaction is:

CaCO₃ → CaO + CO₂

We see that the reaction is correctly balanced.

1 mol of calcium carbonate can decompose to 1 mol of calcium oxide and 1 mol of carbon dioxide.

We convert the mass to moles: 24.8 g . 1mol / 100.08g = 0.248 moles

As ratio is 1:1, 0.248 moles of salt can decompose to 1 mol of oxide.

We convert the moles to mass: 0.248 mol . 56.08g /1mol = 13.9 g

That's the theoretical yield.

To determine the percent yield we think:

(Determined yield / Theoretical yield) . 100 → (13.1 / 13.9) . 100 = 94 %

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2 years ago

What happens in the body when we break down carbohydrates? Explain the whole course of events.

JulsSmile [24]

Answer:

Energetic molecules are formed, or rather the energetic currency to be able to live, which we call ATP.

Explanation:

ATP is a molecule that arises from the degradation of carbohydrates, these are destroyed for the first time in the mouth by the enzyme salivary amylase, then by the stomach, and finally they are absorbed in the intestine in the form of glucose, this glucose enters the bloodstream, entering the cells through insulin.

Once glucose is entered into the cell, it completes an energetic cycle, called the krebs cycle, which provides 36 to 38 ATP.

Atp, is adenosine tri phosphate, phosphate bonds protect a lot of energy, this is how the body generates the following reaction when it needs energy, releasing energy to the environment to be able to produce from locomotion to respiration:

ATP -----> ADP + Pi

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2 years ago

What is the oxidation number for Zn(OH)4 2-?

AleksAgata [21]

Zn(OH)4= ; -2 = -4 + ?, Zn = +2 , the -4 is the charge on the 4 OH- ions.

NO3- + 6 H2O + 8 e- -------> NH3 + 9 OH-
( Zn + 4 OH- ----> Zh(OH)4= + 2e-) x 4
7 OH- + NO3- + 4 Zn + 6 H2O -------> NH3 + 4 Zn(OH)4

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3 years ago

Convert 88.2°C into °F

prisoha [69]

The formula for converting Celsius to Fahrenheit is:
Let Celsius be C

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(88.2*1.8) + 32 = 190.76 degrees Fahrenheit.

Hope this helps!

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3 years ago

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QveST [7]

Answer:

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Explanation:

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2 years ago

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