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4 years ago

Do all collisions lead to a reaction?

Chemistry

1 answer:

4vir4ik [10]4 years ago

3 0

No, not every collision makes a reaction.

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Explain by means of why is reddish orange is observed when you add sodium chloride

Lemur [1.5K]

Answer:

because the orange is unripe

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3 years ago

What is the shape of a molecule containing three covalent bonds with one unshared pair?

Schach [20]

pyramidal, if you have a molecule kit, i would strongly recommend watching a video of someone using a kit explaining the different shapes and following along. It helps a lot!

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3 years ago

Calculate no of moles in 42g of carbon ?

kondaur [170]

Answer:

$\huge\boxed{n = 3.5\ moles}$

Explanation:

Given :

Mass in grams = m = 42 g

Molar Mass = M = 12

Required:

No. of moles = n = ?

Formula :

m = m / M

Solution:

n = 42 / 12

n = 3.5 moles

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3 years ago

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Which scientist is correctly matched with his contribution to atomic theory? Rutherford inferred the existence of a dense, posit

WITCHER [35]

The answer would be Rutherford inferred the existence of a dense, positively charged nucleus.

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4 years ago

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A 0.020 M solution of niacin has a pH of 3.26. (a) What percentage of the acid is ionized in this solution

mariarad [96]

Answer: 2.75%

Explanation:

$pH=-log [H+]$

$3.26 = -log [H+]$

$[H+] = 5.495\times 10^{-4} M$

$HA\rightleftharpoons H^++A^-$

initial 0.020 0 0

eqm 0.020 -x x x

$K_a=\frac{[H+][A-]}{[HA]}$

$K_a=\frac{[x][x]}{[0.020-x]}$

$x=5.495\times 10^{-4}$

$K_a=\frac{[5.495\times 10^{-4}]^2}{[0.020-5.495\times 10^{-4}]}$

$K_a =1.553\times 10^{-5}$

percent dissociation = $\frac{[H^+_eqm]}{[Acid_{initial}]}\times 100$

percent dissociation= $\frac{5.495\times 10^{-4}}{0.020}\times 100$

Thus percent dissociation= 2.75 %

5 0

3 years ago