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erastova [34]
3 years ago
11

The equation for the pH of a substance is pH = -log[H'], where H+ is the concentration of hydrogen ions. A basic

Mathematics
2 answers:
Oksanka [162]3 years ago
8 0

Answer:

it's b.

Step-by-step explanation:

scoundrel [369]3 years ago
7 0

Answer:

9 (approximately)

Step-by-step explanation:

Approximate difference

= pH of basic solution - pH of acidic solution

= 11.2 - 2.4

= 8.8

= 9 (approximately)

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What is the distance between -2.2 , 8.4 on a number line
leonid [27]

Answer:

10.2

Step-by-step explanation:

if u write is down with the decimals tgat and count that is what u would get also 2 plus 8 is ten and two pluse two is 41

5 0
2 years ago
Hello do you know what 80÷1000=​
SOVA2 [1]

Answer: 0.08 if you meant what you said if you meant a thousand divided by 80 then your answer is 12.5

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Pls do 2 3 4 a and b
kirza4 [7]

Answer:

2.a)11.355 b)0.94625

3. divide 6 by 4

4. 0.8kg, 800g

Step-by-step explanation:

To convert one measurement to another you need to set it up so that the old measurement gets cancelled out when you multiply the conversion ratio.

2a)  \frac{3 gallons}{1} *\frac{3.785 milliliters}{1 gallon}=11.355 milliliters the gallons on top and bottom get cancelled out leaving you with the measurement that you want

2b) \frac{1quart}{1} *\frac{1 gallon}{4 quarts} *\frac{3.785 milliliters}{1 gallon} = 0.94625 milliliters

3) \frac{x}{y} \frac{6 quarts}{1} *\frac{1 gallon}{4 quarts} = 1.5 gallons

4) \frac{28 ounces}{1} *\frac{1 kilogram}{35 ounces} = 0.8 kilograms

\frac{0.8 kilograms}{1} *\frac{1000 grams}{1 kilogram} = 800 grams

7 0
3 years ago
Desmond really like Legos. Last Saturday Desmond counted his Legos and realized that
Burka [1]

Answer: 14 red, 7 green, 44 blue

Step-by-step explanation:

First, use the letter <em>r</em> as a variable to represent the number of red Legos. The number of green Legos (<em>g</em>) is 7 less than the number of red Legos, or <em>g = r-7.</em> The number of blue Legos (b) is 2 more than 3 times the number of red Legos, or <em>b = 3r+2</em>. The total number of Legos is the number of red + green + blue Legos, which can be represented as <em>65 = r+g+b</em>.

Substitute the equations for g and b in. This should give you a final equation of <em>65 = r+(r-7)+(3r+2)</em>. To solve for the number of <u>red</u> Legos, first add up all of the terms to get <em>65 = 5r-5</em>. Now add 5 to each side (70<em> = 5r</em>). Finally, divide each side by 5 (r = 14).

To find the number of <u>green</u> Legos, substitute the number of red Legos (14) into the equation for the green Legos (<em>g = r-7</em>). This should get you the equation <em>g = 14-7</em> which simplifies to g = 7.

To find the number of <u>blue</u> Legos, substitute the number of red Legos (14) into the equation for the blue Legos (<em>b = 3r+2</em>). This gives you the equation <em>b = (3*14)+2.</em> First, multiply 3 and 14 to get <em>b = 42+2</em>. Finally, add them together to get b = 44.

6 0
2 years ago
Plz help... 50 points and brainliest for correct answers
pogonyaev

Step-by-step explanation:

Hi,

For the first screenshot, your answer will be...

A) 1/10 + 1/4 ≤ 1

And for the second screenshot, your answer will be...

A) d ≤ -1/2n + 5

I hope this helps :)

7 0
3 years ago
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