2 years ago

Got It? Chemistry The pH of a substance equals -log[H+], where (H+] is

Mathematics

2 answers:

Natali5045456 [20]2 years ago

6 0

Answer:

The substance A has a greater pH.

pH is directly proportional to hydrogen ion concentration [H+], i.e the higher the [H+], the higher it pH.

Greater pH level - lesser pH level is 14.

why? it is so because, on the standard pH scale the highest point is 14 and the lowest point is 0.

Therefore the difference between those points is 14.

Naya [18.7K]2 years ago

4 0

Answer:

123k12

Step-by-step explanation:

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No links pls just answer the question direct.

NeTakaya

Formula:

(3.14)r^2

Larger one:

(3.14)(3)^2

28.26 * 13

367.38 in^2

Smaller one:

(3.14)(3)^2

28.26 * 8

226.08 in^2

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2 years ago

Lyla made a scale drawing of a city park. She used the scale 1 millimeter = 1 meter. What is the scale factor of the drawing?

sertanlavr [38]

Answer:

1ml : 1m

Step-by-step explanation:

The scale factor of the drawing is the ratio of 1 milliliter and 1 meter; that is, 1ml : 1m.

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3 years ago

A book of stamps costs $9.80 $ 9 . 80 . The expression 9.8 9 . 8 n represents the price of one stamp. What does the variable n r

andreev551 [17]

Answer: n represents the amount a stamp cost

Step-by-step explanation:

7 0

3 years ago

Find the area and the circumference of a circle with a diameter 8yrd.

nalin [4]

Answer:

Part 1) The area of the circle is $A=50.24\ yd^2$

Part 2) The circumference of the circle is $C=25.12\ yd$

Step-by-step explanation:

step 1

The area of a circle is equal to

$A=\pi r^{2}$

we have

$r=8/2=4\ yd$ ---> the radius is half the diameter

$\pi =3.14$

substitute

$A=(3.14)(4)^{2}$

$A=50.24\ yd^2$

step 2

The circumference of a circle is equal to

$C=\pi D$

we have

$D=8\ yd$

$\pi =3.14$

substitute

$C=(3.14)8$

$C=25.12\ yd$

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3 years ago

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Tanya [424]

Answer:

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2 years ago

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