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lara31 [8.8K]
3 years ago
13

Which formula represents an asymmetrical molecule ch4 co2 n2 nh3

Chemistry
1 answer:
Karolina [17]3 years ago
8 0

Answer:

NH₃  

Step-by-step explanation:

All the molecules have some degree of symmetry, but only NH₃ is asymmetric with respect to the bond dipoles.

NH₃ has a trigonal pyramidal geometry.

All the N-H bond dipoles point toward the N, so they all have an upward component with no counterbalancing downward component.

The bond dipoles do not cancel, so NH₃ has a molecular dipole.

CH₄ is tetrahedral and symmetrical.

CO₂  and N₂ are linear and <em>symmetrical</em>.

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What is the mass of 6.5x10^15 atoms of Ni
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Describe two variables that affect the rate of diffusion
Katyanochek1 [597]

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If a solution containing 45.101 g of mercury(II) acetate is allowed to react completely with a solution containing 12.026 g of s
AnnyKZ [126]

Answer:

14.533 grams of solid precipitate of mercury(II) dichromate will form.

Explanation:

Hg(CH_3COO)_2(aq)+Na_2Cr_2O_7(aq)\rightarrow HgCr_2O_7(s)+2CH_3COONa(aq)

Moles of mercury(II) acetate = \frac{45.101 g}{318.70 g/mol}=0.14152 mol

Moles of sodium dichromate = \frac{12.026 g}{261.97 g/mol}=0.045906 mol

According to reaction , 1 mole of sodium dichromate reacts with 1 mole of mercury(II) acetate , then 0.045906 moles of sodium dichromate will recat with :

\frac{1}{1}\times 0.045906 mol=0.045906 mol of mercury(II) acetate

This means that mercury(II) acetate is present in an excess amount and sodium dichromate is present in limiting amount.So, amount of precipitate will depend upon moles of sodium dichromate.

According to reaction , 1 mole of sodium dichromate gives 1 mole of mercury(II) dichromate , then 0.045906 moles of sodium dichromate will give :

\frac{1}{1}\times 0.045906 mol=0.045906 mol of mercury(II) dichromate

Mass of 0.045906 moles of mercury(II) dichromate:

0.045906 mol × 316.59 g/mol = 14.533 g

14.533 grams of solid precipitate of mercury(II) dichromate will form.

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3 years ago
4. Corhplete the table below.
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Answer:

Valency of the elements

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