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3 years ago

What is the three-dimensional shape of the molecule this Lewis structure H — Be — H

Chemistry

2 answers:

ra1l [238]3 years ago

7 0

A: Bent

Hydrogen needs 2 electrons and Beryllium needs 8

kipiarov [429]3 years ago

6 0

Answer: The three dimensional shape of H-Be-H molecule is Linear.

Explanation: Be is a second group metal with only two valence electrons and H has only one valence electron. H wants to complete two electrons in its valence shell and for this each H forms a single covalent bond with central Be atom. As only two atoms(H atoms) are bonded to central Be atom and it does not have any lone pair of electrons, it's Linear in shape. The bond angle is 180 degree.

If you see any molecule where only two atoms are bonded to the central atom and the central atom doesn't have any lone pair of electrons then it must be Linear in shape.

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What is shown in the diagram below?

Colt1911 [192]

B I think is right. Hope this helps!

3 0

3 years ago

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The compound trimethylamine, (CH3)3N, is a weak base when dissolved in water. Write the Kb expression for the weak base equilibr

Rina8888 [55]

<u>Answer:</u> The expression of $K_b$ is written below.

<u>Explanation:</u>

We are given a chemical compound which is trimethylamine that acts as a weak base when dissolved in water.

It accepts a proton from the water to form trimethylammonium ion and hydroxide ion.

The chemical equation for the reaction of trimethylamine in water follows:

$(CH_3)_3N+H_2O\rightleftharpoons (CH_3)_3NH^++OH^-$

The expression of $K_b$ for above equation follows:

$K_b=\frac{[(CH_3)_3NH^+][OH^-]}{[(CH_3)_3N]}$

Hence, the expression of $K_b$ is written above.

5 0

3 years ago

Covert 1.57 x 10^14 nm= ___m

LekaFEV [45]

Answer:

1.57 x 10⁷m

Explanation:

Given quantity is;

1.57 x 10¹⁴nm

Now;

1 nm = 10⁻⁹

So, let us convert this given quantity;

1 nm = 10⁻⁹

1.57 x 10¹⁴nm will give 1.57 x 10¹⁴ x 10⁻⁹ = 1.57 x 10⁷m

7 0

3 years ago

Identify all actions that you should take if you have chipped or broken glassware. Notify your teacher. Have the custodian clean

12345 [234]

Explanation:

If you have chipped or broken glassware then it is very important that you should take precaution yourself by conveying about it to your teacher and class mates.

By doing so you are making everybody aware to be cautious of the chipped or broken glassware.

Also, it is advised that you should dispose of it in the designated glass waste area.

Therefore, we can conclude that all actions that you should take if you have chipped or broken glassware as as follows.

Notify your teacher.

Notify classmates.

Dispose of it in the designated glass waste area.

8 0

3 years ago

Read 2 more answers

A 0.0035 M aqueous solution of a particular compound has pH = 2.46. The compound is (A) a weak base (B) a weak acid (C) a strong

slava [35]

Answer:

(a) A strong acid

Explanation:

We have given the pH of the solution is 2.46

pH=2.46

So the concentration of $H^+=10^{-pH}=10^{-2.46}=0.00346$

solution having H+ concentration more than $H^+=10^{-7}$ is acidic

Since in the given solution, H+ concentration is 0.00346 M which is more than 10^{-7}[/tex] so this is an acidic solution

Note-The concentration of $H^+$ decide the behavior of the solution that is, it is acidic or basic

7 0

3 years ago