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Zinaida [17]
3 years ago
14

Una solución tiene un valor de pH=5 Cuál es la concentración molar de OH-?​

Mathematics
1 answer:
Mnenie [13.5K]3 years ago
5 0

Answer:

Podemos hacer la conversión entre [\text{H}^+][H

+

]open bracket, start text, H, end text, start superscript, plus, end superscript, close bracket y \text{pH}pHstart text, p, H, end text mediante las siguientes ecuaciones:

\begin{aligned}\text{pH}&=-\log[\text{H}^+]\\ \\ [\text H^+]&=10^{-\text{pH}}\end{aligned}

pH

[H

+

]

=−log[H

+

]

=10

−pH

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In ⊙P, QR≅ST. Which statement must be true? Select all that apply.
den301095 [7]

The true statement about the circle with center P is that triangles QRP and STP are congruent, and the length of the minor arc is 11/20π

<h3>The circle with center P</h3>

Given that the circle has a center P

It means that lengths PQ, PR, PS and PT

From the question, we understand that QR = ST.

This implies that triangles QRP and STP are congruent.

i.e.  △QRP ≅ △STP is true

<h3>The length of the minor arc</h3>

The given parameters are:

Angle, Ф = 99

Radius, r = 1

The length of the arc is:

L = Ф/360 * 2πr

So, we have:

L = 99/360 * 2π * 1

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Hence, the length of the minor arc is 11/20π

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2 years ago
Which graph represents the same relation as the set {(-3,2).(5,5) (3,3), (3,-2)}?
UNO [17]

Answer:

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Anastaziya [24]

Answer:

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What is the area of a square with a side of 8x^7 y^3
sukhopar [10]
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In your question, the side or s is: \sf{8x^7y^3}

And so the area of a square with that side length would be:

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And using this formula: \sf{(a^b)^c =a^{b\times c}}

We get that the area is:

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And simplifying that we get the final answer as:

\huge{\boxed{\bf{Area=64x^{14}y^{6}}}}
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3 years ago
Zara's weekly pay is increased by 5% to $315. What was Zara's pay before the increase
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Answer:

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