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Savatey [412]
3 years ago
15

Which of the following compounds would have a linear molecular geometry? 1. N2 2. H2S 3. CO2 a. 1 and 3 only b.1 and 2 only c.2

and 3 only d.1,2 and 3 neither 1, 2,or 3

Chemistry
1 answer:
borishaifa [10]3 years ago
4 0

Answer: 1 and 3 only

Explanation:

The structures of N2 and CO2 show both to be linear compounds from the images attached. In molecular nitrogen, the two nitrogen atoms are sp hybridized just as the two carbon atoms in CO2 are sp hybridized. sp hybridization is associated with linear shape because it leads to a bond angle of 180°. Hence the answer.

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The rate of disappearance of hbr in the gas phase reaction 2hbr(g)→h2(g)+br2(g) is 0.140 m s-1 at 150°c. the rate of appearance
VMariaS [17]
<span>Answer: 0.070 m/s

Explanation:

1) balanced chemical equation:

given: 2HBr(g) → H2 (g)+Br2(g)

2) Mole ratios:

2 mol HBr : 1 mol H2

3) That means that every time  2 moles of HBr disappear 1 mol of H2 appears.

That is, the H2 appears at half rate than the HBr disappears.

∴ rate of appearance of H2 = rate of disappearance of HBr / 2 = 0.140 m/s / 2 =  0.070 m/s, which is the answer.</span>
4 0
3 years ago
Which statement explains why a molecule of CH4 is nonpolar?
Lerok [7]

Answer:

The geometric shape of a CH4 molecule distributes the charges symmetrically.

Explanation:

The dipole moment is ruled by the compound's geometry and elements electronegativity difference.

Arranging the forces acording to the elements electronegativity difference withing the molecule geometry will yeld the dipole moment.  

If the forces cancel out, it is a nonpolar compound.

If the forces does not cancel out it is a polar compound.

Picture of such analysis for methane is attached.

3 0
3 years ago
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Elan Coil [88]

density = 2.013g/cm3

Explanation:

density = mass/volume

density = 453g/225cm3

density = 2.013g/cm3

7 0
3 years ago
Which of the following statements is true about the structure of an atom?
-Dominant- [34]

Answer:

C: The atomic nucleus contains most of the mass.

3 0
3 years ago
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Hydrochloric acid has the chemical formula HCl. A certain quantity of hydrochloric acid has 2.39x1024 atoms. How many moles of h
nasty-shy [4]

Answer: 3.97 moles HCl

Explanation: Solution:

2.39x10²⁴ atoms HCl x 1 mole HCl /

6.022x10²³ atoms HCl

= 3.97 moles HCl

8 0
3 years ago
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