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3 years ago

Why does sodium form a 1+ ion but magnesium forms a 2+ ion

1 answer:

6 0

Because Na has one too many electron to be stable, while Mg has 2. once they loose those electrons, they will be come ion. loosing one electron will give the ion a 1+ charge, and loosing 2 will create a 2+ charge

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A compound or material formed by a chemical reaction is known as the ____ of that reaction.

Olegator [25]

Answer:

Its is the product.

Explanation:

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2 years ago

What is the name of the compound HPO4

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Answer:

wsde4frtghyujkopldfgyhuji

Explanation:

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3 years ago

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A mutation in the gene coding for a single-polypeptide enzyme results in the substitution of the amino acid serine, which has a

Alik [6]

Answer:

The correct answer is: The substitution altered the secondary and tertiary structure of the enzyme so that the mutated enzyme folds into a different shape than the normal enzyme does.

Explanation:

In the given condition, the substitution mutation of gene causes a replacement of serine by phenylalanine amino acids which causes a reduction in the activity of the enzyme. Since serine is polar and has -OH or hydroxy group involves the information of binding of biological catalyst to the substrate.

The primary structure of a protein is significant which finalizes the number of amino acids their sequence. The mutation of protein also affects both secondary and tertiary structures as it disturbs the structure of the protein and affects the catalytic activity as well as the binding affinity of the substrate.

the substitution of serin by phenylalanine does not affect or influence the mass of enzyme.

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3 years ago

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KIM [24]

Answer:

The answer is glucose (C6H12O6)

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2 years ago

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Determine the [ OH − ] , pH, and pOH of a solution with a [ H + ] of 8.2 × 10 − 10 M at 25 °C. [ OH − ] = 1.22 ×10 −5 M pH = 9.0

nika2105 [10]

Answer:

See explanation below

Explanation:

At the beggining of the exercise, you already giving the solution for the 1st two problems, so I just going to answer the remaining question which are:

"Determine the [ H + ] , [ OH − ] , and pOH of a solution with a pH of 7.20 at 25 °C. [ H + ] = M [ OH − ] = M pOH = 6.8 Determine the [ H + ] , [ OH − ] , and pH of a solution with a pOH of 6.43 at 25 °C."

Now, to get every data in the problem, we need to write the expressions for every part, which are the following:

pH = -log[H⁺] (1)

pH = 14 - pOH (2)

[H⁺] = 10^(-pH) (3)

[H⁺] = Kw / [OH⁻] (4)

pOH = -log[OH⁻] (5)

pOH = 14 - pH (6)

[OH⁻] = 10^(-pOH) (7)

[OH⁻] = Kw / [H⁺] (8)

Now, according to the given data, we will use any of these eight expressions.

a) "Determine the [ H + ] , [ OH − ] , and pOH of a solution with a pH of 7.20"

We have pH, so in this case, we will use expression (3), (6) and (8):

[H⁺] = 10^(-7.20)

[H⁺] = 6.31x10⁻⁹ M

pOH = 14 - 7.2

pOH = 6.8

[OH⁻] = 1x10⁻¹⁴ / 6.31x10⁻⁹

[OH⁻] = 1.58x10⁻⁴ M

b) "The [ H + ] , [ OH − ] , and pH of a solution with a pOH of 6.43 "

In this case, we can use expressions (2), (4) and (7). Using those expressions we have:

pH = 14 - 6.43

pH = 7.57

[H⁺] = 10^(-7.57)

[H⁺] = 2.69x10⁻⁸ M

[OH⁻] = 1x10⁻¹⁴ / 2.69x10⁻⁸

[OH⁻] = 3.72x10⁻⁷ M

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3 years ago