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nikdorinn [45]
3 years ago
10

Which of these statements correctly describes covalent bonds?

Chemistry
2 answers:
Goshia [24]3 years ago
8 0
The most appropriate answer is B !!

Covalent bond is formed by sharing of electrons !!
kramer3 years ago
3 0

Answer:

 The covalent bond is formed by sharing of electrons

The answer

Is B.

Explanation:

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Draw the structure of the compound C9H12 from its proton (1H) NMR spectrum below. First-order spin-spin splitting rules and equa
Vikki [24]

Answer:

Isopropylbenzene

Explanation:

If you draw the structure, you can see that there are two methyl groups and in between there.

Adjacent to CH3, there are four neighbouring hydrogens, therefore, n=4+1 = 5. The same is for methyl on other side. For carbon present in benzene ring,  there is 2, since there is one hydrogen on benzene per carbon.

4 0
3 years ago
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In Niels Bhor's model of the atom, electrons move
exis [7]
Bohrs model says that electrons move in fixed shells (which have fixed distances) around the nucleus of an atom. 
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3 years ago
My answer was 10 and it’s telling me it’s wrong..what did i do wrong?
Keith_Richards [23]

Answer:

1.586x10^-9

Explanation:

To make a multiplication in scientific notation we need to multiply the coefficients and sum the exponents:

Coefficients: 2.600 * 6.1000 = 15.86

Exponents: -5 + (-5) = -10

The result is:

15.86x10^-10

As the scientific notation must be given with only 1 number in the left of the point:

<h3>1.586x10^-9</h3>

5 0
3 years ago
What are the reagents for BaCO3(s)
Wittaler [7]

 The reagents for BaCO₃  is

    BaO and CO₂

      <em><u>Explanation</u></em>

Reagent is  a substance that bring  about a chemical reaction when added to a system.

Some  reagent  may be added to  see if a reaction has occurred.

 BaO  and  Co₂    are reagent  since they react  to produce BaCO₃ as below

BaO(s) + CO₂(g) → BaCO3(s)



6 0
3 years ago
A sample of argon gas has a volume of 795 mL at a pres-sure of 1.20 atm and a temperature of 116 ∘C. What is the final volume of
jek_recluse [69]

<u>Answer:</u> The volume when the pressure and temperature has changed is 1.6\times 10^2mL

<u>Explanation:</u>

To calculate the volume when temperature and pressure has changed, we use the equation given by combined gas law.

The equation follows:

\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}

where,

P_1,V_1\text{ and }T_1 are the initial pressure, volume and temperature of the gas

P_2,V_2\text{ and }T_2 are the final pressure, volume and temperature of the gas

Let us assume:

P_1=1.20atm\\V_1=795mL\\T_1=116^oC=[116+273]K=389K\\P_2=0.55atm\\V_2=?mL\\T_2=75^oC=[75+273]K=348K

Putting values in above equation, we get:

\frac{1.20atm\times 795mL}{389K}=\frac{0.55atm\times V_2}{348K}\\\\V_2=\frac{1.20\times 795\times 348}{0.55\times 389}=1.6\times 10^3mL

Hence, the volume when the pressure and temperature has changed is 1.6\times 10^2mL

5 0
3 years ago
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