3 years ago

Proporties of mixtures

Chemistry

2 answers:

Vesnalui [34]3 years ago

7 0

The answer is A hope that helps

crimeas [40]3 years ago

3 0

I think the answer is A?

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rank the group 1a elements tested in order of increasing energy emission when electrons returns to the ground state. explain thi

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Answer:

The increasing order of energy emission is as follow

Li < Na < K < Rb < Cs

Explanation:

The Characteristic colors of alkali metals are

Li-crimson red
Na- golden yellow
K- pale violet
Rb and Cs- violet

These flame color show that when we moved from down the group, the wavelength decreases (frequency increases).
As the color of Li is red that shows ,it has less emission energy as compare to Rb and Cs that have color violet (more emission energy).

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Answer:

Yes

Explanation:

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AleksandrR [38]

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How much (mL) of a 2.0 M sodium hydroxide solution would it take to neutralize 50 mL of a 6.0 M solution of hydrochloric acid?

Tom [10]

Answer:

150ml

Explanation:

For this question,

NaOH completely dissociates. It is a strong base

HCl also completely dissociates. It is a strong acid

So we have this equation

m1v1 = m2v2 ----> equation 1

M2 = 2m

V1= ??

M2 = 6m

V2 = 50m

When we input these into equation 1, we have:

2m x v1 = 6m x 50ml

V1 = 6m x 50ml/2

V1 = 300/2

V1 = 150ml

Therefore NaOH that is required to neutralize the solution of hydrochloric acid is 150ml.

Thank you

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2 years ago

Please help it’s already overdue

Gnesinka [82]

Answer:

no se amigo esquema no entiendo ingles

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