All categories

3 years ago

Which formula represents a covalent compound

Chemistry

2 answers:

Dmitrij [34]3 years ago

6 0

Answer:

Answer is D dont forget to mark btainlist

SpyIntel [72]3 years ago

4 0

Answer:

$\boxed {\boxed {\sf D. \ H_2O_2}}$

Explanation:

A covalent compound is a molecule made up of covalent bonds, where the atoms share pairs of valence electrons. These compounds consist of two or more nonmetals.

Essentially, if a compound contains a metal, it is an ionic or metallic compound, not a covalent compound.

A. NaCl

This is sodium chloride. It contains sodium (Na) and chlorine (Cl). Sodium is a metal, so this is ionic.

B. CaO

This is calcium oxide. It contains calcium (Ca) and oxygen (O). Calcium is a metal, so this is ionic.

C. MgS

This is magnesium sulfide. It contains magnesium (Mg) and sulfur (S). Magnesium is a metal, so this is ionic.

D. H₂O₂

This is hydrogen peroxide. It contains hydrogen (H) and oxygen (O). Both of these elements are non-metals, so this is a covalent compound.

The correct choice is <u>D. H₂O₂</u>

You might be interested in

A student needs to standardize a base solution by titration with an acid solution of known concentration. She finds the volume o

kondor19780726 [428]

The steps usually involves adding the known solution (the titrant) to a known quantity of the unknown solution (the analyte) until the reaction is complete which can be understood in detail as below with the help of through out process of titration.

<h3 /><h3>What is Titration ?</h3>

A titration is a technique used to work out the concentration of an unknown solution based on its chemical reaction with a solution of known concentration.

Steps in order to determine the concenteration of base solution ;

(Acid-Base Titration)

Choose the titrant.
Choose the titrate.
Select the normality of the titrate.
Choose the volume of the liquid to be pipetted out.
Select the indicator.
Start titration.
End point is noted at the colour change of the solution.

From the final reading the normality of titrant can be calculated by the equation:

N₁V₁=N₂V₂

After finding the normality, the amount of given substance in the whole of the given solution can be calculated by the equation:

Mass = Equivalent weight x Normality \ Volume {1000}

Learn more about titration here ;

brainly.com/question/15365870

#SPJ1

6 0

3 years ago

Plz help me<br> thank you

Yakvenalex [24]

A. 4 mm.......0.5 mm
B. 1.5 mm......same size

6 0

3 years ago

Producer gas is a fuel formed by passing air over red-hot coke (amorphous carbon). What mass of a producer gas that consists of

Karolina [17]

Producer gas is a fuel that is produced by burning biomass with an air deficit passed over red-hot coke (amorphous carbon). This gas is nothing but a mixture of gases such as hydrogen (H), carbon monoxide (CO), carbon dioxide (CO₂) and nitrogen (N₂).

The equation of producer gas is as follows -

CO₂ + 2N₂ (air) → CO + 2N₂

ΔH = -27.06 kcal

We know that,

1 Ton = 1000 kg

Mass of coke needed to form producer gas = 1.75 tons = 1750 kg

Given values,

Carbon monoxide (CO) = 25%

Carbon dioxide (CO₂) = 5%

Nitrogen (N₂) = 70%

One mole of carbon dioxide reacts with two moles of nitrogen to form one mole of carbon monoxide and nitrogen (producer gas).

We know that, 1 ton (1000 kg) of coke produces 470 Nm³ of producer gas, i.e.

470 × 4.359 = 2048.73 kg

1000 kg of coke produces = 2048.73 kg of producer gas

∴ 1 kg of coke produces = 2048.73 ÷ 1000 kg of producer gas

∴ 1750 kg of coke produces = 2048.73 × 1750 / 1000 = 3585.28 kg of producer gas.

Percentage yield = 87%

= 3585.28 × 87/100

= 3119.19 kg of producer gas

= 3.44 tons

Learn more about coke here-

brainly.com/question/13105289

#SPJ4

7 0

2 years ago

PLSSS HELP

blondinia [14]

Answer: With each input, there is an output, a recipe requires certain ingredients, and certain amounts of each. A recipe calls for measurements, missing something can ruin it, just like a chemical formula, take something out or add something else, you get something completely different. when putting things together to make something you have to make sure what your putting in, will give you the product you want as the output.

Explanation:

8 0

3 years ago

3. What do platelets do?

PolarNik [594]

Answer:

C help stop bleeding

Explanation:

Platelets stop bleeding by clumping and forming plugs in blood vessel injuries

5 0

3 years ago