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Chemistry

1 answer:

faust18 [17]3 years ago

4 0

Answer:

D) It has a different unit than atomic mass.

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A chemist divides a large sample of a mixture into three smaller portions. Each of these portions contains different ratios of t

ehidna [41]

Answer:

Heterogeneous mixture

Explanation:

A mixture is a substance that is made up of different components that are not chemically combined. For example, the air is a mixture containing gaseous components.
A pure substance, on the other hand, is a substance that contains similar particles. For example, an element is a pure substance with similar atoms and a compound is a pure substance with similar molecules.
A mixture may either be homogeneous or heterogeneous.
A homogeneous mixture contains various fractions of components in a single-phase while a heterogeneous mixture contains components in different phases and different ratios.

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4 years ago

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If the pH is 4.5, what is the pOH ?

Ahat [919]

PH+pOH=14
4.5+pOH=14
pOH=14-4.5
pOH = 9.5

We know that
[H⁺][OH⁻]=10⁻¹⁴,so

-log([H⁺][OH⁻])=-log10⁻¹⁴
-log [H⁺]+ (- log[OH⁻])= - log10⁻¹⁴,
- log[H⁺] = pH
- log[OH⁻] = pOH
- log10⁻¹⁴=-(-14)log10=14*1=14
pH + pOH =14

7 0

3 years ago

Rank the following carboxylic acids from strongest (1) to weakest (4)

Paha777 [63]

Answer:

CH2FCOOH > CH2ClCOOH > CH2BrCOOH > CH3COOH

Explanation:

CH2FCOOH > CH2ClCOOH > CH2BrCOOH > CH3COOH

More electronegative atom of halogen is , stronger acid will be.

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3 years ago

Which ion does an acid contain most of

a_sh-v [17]

Answer:hydrogen ions

Explanation:

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3 years ago

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How do you solve a combustion reaction

Zinaida [17]

First, balance the carbon and hydrogen atoms on both sides of the equation.Then, balance the oxygen atoms. ...Finally, balance anything that has become unbalanced.

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4 years ago