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3 years ago

12

The shape of a molecule is trigonal planar. How many electron domains around the central atom does this molecule most likely hav

e?

1 answer:

Anni [7]3 years ago

4 0

Ideally, there would be three electron groups around a central atom

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The solid rocket boosters for the space shuttle employ a mixture of aluminum and ammonium perchlorate (molar mass = 117 g/mol) a

Mnenie [13.5K]

Answer : The volume of gas at STP produced are 45.0 L

Explanation :

First we have to calculate the moles of ammonium perchlorate.

$\text{Moles of }NH_4ClO_4=\frac{\text{Mass of }NH_4ClO_4}{\text{Molar mass of }NH_4ClO_4}$

Molar mass of $NH_4ClO_4$ = 117 g/mole

$\text{Moles of }NH_4ClO_4=\frac{235g}{117g/mole}=2.01mole$

Now we have to calculate the moles of $NO$ gas produced during the reaction.

The balanced chemical reaction is,

$3Al(s)+3NH_4ClO_4(s)\rightarrow Al_2O_3(s)+AlCl_3(s)+3NO(g)+6H_2O(g)$

From the reaction we conclude that,

As, 3 moles of $NH_4ClO_4$ produces 3 moles of NO gas

So, 2.01 moles of $NH_4ClO_4$ produces 2.01 moles of NO gas

Now we have to calculate the volume of gas at STP.

At STP, 1 mole of substance occupy 22.4 L volume of gas.

As, 1 mole of NO gas occupy 22.4 L volume of gas.

So, 2.01 mole of NO gas occupy 2.01 × 22.4 L = 45.0 L volume of gas.

Therefore, the volume of gas at STP produced are 45.0 L

6 0

4 years ago

Four molecules have carbon as the central atom and hydrogen atoms around it. Which shape would give rise to a polar molecule?

ivann1987 [24]

Answer:

D) Tetrahedral

Explanation:

Hello,

Tetrahedral is a molecular shape that turns out when four bonds and no lone pairs around the central atom in the molecule. The bonded atoms to the central atom lie at the corners of a tetrahedron with 109.5° angles between them. The molecules with an tetrahedral electron pair geometries have $sp^3$ hybridization at the central atom. For instance, both ammonium ion ( $NH_4^+$ ) and methane ( $CH_4$ ) have a tetrahedral molecular geometry.

Best regards.

8 0

4 years ago

Which statement correctly describes a covalent bond? The valence electrons are joined in a shell around the atoms. The valence

Vedmedyk [2.9K]

The valence electrons are shared between the atoms

4 0

4 years ago

Suggest a way to determine whether a colorless liquid is pure water or a salt solution

Maru [420]

You could boil the liquid. If it is pure liquid than 100% of the liquid will boil off, however, if there is salt in the solution it will remain in the bottom of your beaker when the liquid has been boiled off.

7 0

4 years ago

Read 2 more answers

50 POINTS!!!! PLEASE HELP I AM BEGGING!!!!!!

polet [3.4K]

3CH4 refers to three molecules of a
compound and C3H12 refers to only one
molecule of a compound.
3CH4 and C3H12 are actually different
molecules though they contain the same
number and types of atoms. Recall that both
of them are hydrocarbons hence they
contain only hydrogen and carbon.
3CH4 refers to three molecules of methane
while C3H12 refers to one molecule of
diphenyl methane. Hence 3CH4 refers to
three molecules of a compound and C3H12
refers to only one molecule of a compound.

7 0

3 years ago