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3 years ago

How do polar and nonpolar covalent bonds differ?

1 answer:

7 0

Answer: In polar covalent bonds a pair of electrons are unequally shared between two atoms, while in nonpolar covalent bonds two atoms share a pair of electrons with each other.

I hope this helps :)

Explanation:

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Q1- Classify each of the molecules given below by molecular geometry.

Ludmilka [50]

It would be carbon dioxide codd2 for the molecules

3 0

2 years ago

30 pts! Sodium and water react according to the following equation. If 31.5g of sodium are added to excess water, how many liter

mihalych1998 [28]

First, calculate the number of moles of sodium present with the given mass,

31.5 g of sodium x (1 mol sodium/ 23 g sodium) = 1.37 mol sodium

It is given in the equation that for every 2mols of sodium, one mol of H2 is produced.

mols of H2 = (1.37 mols sodium)(1 mol H2/ 2 mols sodium)
mols of H2 = 0.685 mols H2

Then, at STP, 1 mol of gas = 22.4 L.

volume of H2 = (0.685 mols H2)(22.4 L / 1 mol)
volume of H2 = 15.34 L

Answer: 15.34 L

3 0

3 years ago

Any two difference between short sightedness and long sightednes

SSSSS [86.1K]

Explanation:

tala it is also called myopia lekhnu hai

Äni Arko MA it is also called hypermetropia .

3 0

2 years ago

Please help balance this equation <br> _B2Br6 + _HNO3= _B(NO3)3+_HBr

Trava [24]

Answer: B2Br6 + 6HNO3 → 2B(NO3)3 + 6BrH

Equation

B2Br6+HNO3=B(NO3)3+HBr

B=2 B=1

BR=6 BR=1

H=1 H=1

N=1 N=3

O=3 O=9

ANSWER

B2Br6 + 6HNO3 → 2B(NO3)3 + 6BrH

B=2 B=2

BR=6 BR=6

H=6 H=6

N=6 N=6

O=18 O=18

HOPE THIS HELPS

4 0

3 years ago

How many moles of calcium chloride are theoretically produced for the following reaction given we have 2.6 moles of HCl and 1.4

Georgia [21]

Answer : The number of moles of calcium chloride theoretically produced are, 1.3 moles.

Explanation : Given,

Moles of HCl = 2.6 moles

Moles of $Ca(OH)_2$ = 1.4 moles

Now we have to calculate the limiting and excess reagent.

The given balanced chemical reaction is:

$2HCl+Ca(OH)_2\rightarrow 2H_2O+CaCl_2$

From the balanced reaction we conclude that

As, 2 mole of $HCl$ react with 1 mole of $Ca(OH)_2$

So, 2.6 moles of $HCl$ react with $\frac{2.6}{2}=1.3$ moles of $Ca(OH)_2$

From this we conclude that, $Ca(OH)_2$ is an excess reagent because the given moles are greater than the required moles and $HCl$ is a limiting reagent and it limits the formation of product.

Now we have to calculate the moles of $CaCl_2$

From the reaction, we conclude that

As, 2 mole of $HCl$ react to give 1 mole of $CaCl_2$

So, 2.6 moles of $HCl$ react to give $\frac{2.6}{2}=1.3$ moles of $CaCl_2$

Therefore, the number of moles of calcium chloride theoretically produced are, 1.3 moles.

7 0

3 years ago