3 years ago

What is the bond angle between the hydrogen atoms in an ammonia (NH₃) molecule?

1 answer:

3 0

There are 4 electron pairs (3 bonding and 1 lone pair) so the angle is 107 degrees. The 4 electron pairs are repelled to give a tetrahedral arrangement but the molecule has a pyrimidal shape due to the lone pair.

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What is the volume of 3.00 M sulfuric aid that contain 9.809 g of H2SO4 (98.09g/mol)

Slav-nsk [51]

Given :

Molarity of sulfuric acid solution is 3.0 M.

Amount of sulfuric acid present in solution is 9.809 g.

To Find :

The volume of solution.

Solution :

We know, molarity is given by :

$Molarity = \dfrac{number \ of \ moles \times 1000}{Volume\ ( ml )}\\\\M = \dfrac{w \times 1000}{M.M \times V}\\\\3 = \dfrac{9.809\times 1000}{98.09 \times V}\\\\V = \dfrac{1000}{10\times 3}\ ml\\\\V = 33.33 \ ml$

Therefore, volume required is 33.33 ml .

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Select the Independent, Dependent and Controlled Variables

dalvyx [7]

Answer:

The independent variable is graphed on the x-axis. The dependent variable, which changes in response to the independent variable, is graphed on the y-axis. Controlled variables are usually not graphed because they should not change.

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2 years ago

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A 67.2 g sample of a gold and palladium alloy contains 3.17x10^23 atoms. What is the mass percentage of the gold in the alloy?

Karo-lina-s [1.5K]

The answer is A I hope that helps

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Acid rain is represented by the formula H2SO4. How many atoms if sulfur are present in one molecule of acid rain?

SVETLANKA909090 [29]

Answer:

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Explanation:

Let's check it out

H2SO4

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I’m in the 5th grade yo

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