PLEASE HELP EXPLAIN !! SHOW WORK FOR BRAINLIEST Acidity is measured on the pH scale. The acidity of a substance is given by pH=−logH, where H is the concentration of Hydrogen ions. If a substance has an H value of 0.0004, what is the pH of the substance, rounded to the nearest tenth?

Answers

Answer 1

3.4

Step-by-step explanation:

The pH or acidity of a solution is given by the equation

[tex]pH = -\log{[H]}[/tex]

where [H] is the concentration of [tex]H^+[/tex] ions. If the [tex]H^+[/tex] concentration is 0.0004 (=[tex]4×10^{-4}),[/tex] then its pH level is

[tex]pH = -\log{(4×10^{-4})} = 3.4[/tex]


Related Questions

Please view the image above for the question ^^​

Answers

Answer:

2

Step-by-step explanation:

After reflecting ABC over the y-axis and translating that image down, ABC will map onto DEF.

Answer:

(2)

Step-by-step explanation:

If you reflect ABC across the y axis it would look like DEF but above the x axis; translate it down and you get DEF.

Below is an excerpt from the home loan contract Kyle signed with his bank.

“The sum of the principal of the loan and all applicable interest will be divided into 360 monthly payments according to the amortization schedule.

The Buyer shall make each monthly payment by the first day of the month it is due. A payment not received by the first day of the month it is due will be considered delinquent. A payment not received by the fifteenth day of the month it is due will be subject to a late charge of $75.00. If a payment is not received by the last day of the month it is due, the Buyer and transaction shall be reported to the appropriate credit agencies.

In the event of delinquency, the Buyer may divide any payment not received into not more than three equal installments to be included on the next consecutive monthly payments. Notification of the Buyer’s intent to do so must be made by written letter or phone call to the phone number and address listed below within one business week of delinquency.”

Due to some changes at his job and the resulting loss of income, Kyle will not be able to make his monthly payment by the first of the month. He does expect to be able to make it by the 9th of the month. According to the contract, what does Kyle need to do?
a.
Other than pay the monthly payment, Kyle does not need to do anything.
b.
Notify the bank to let them know that his payment is going to be eight days late
c.
Divide this payment into three payments to be included in future monthly payments.
d.
Include an extra $75.00 with his payment to cover the late fee that will be assessed.

Answers

9514 1404 393

Answer:

  a.  Other than pay the monthly payment, Kyle does not need to do anything.

Step-by-step explanation:

If Kyle plans to make a payment by the 15th of the month, he need do nothing, except make the payment.

If he plans to divide the payment into 3 parts, he needs to contact the bank within a week of the first of the month. If he plans to make a payment after the 15th, he needs to add $75 to it for the late charge.

Answer:

i would think it would be [A Other than pay the monthly payment, Kyle does not need to do anything.]

Step-by-step explanation:

Kim, Jenny, and Wendy are basketball players. Each plays a different position (guard, forward, and center) and wears a different number (30, 32, and 35). Kim and number 30 are too small to play center. Number 35 in the center. Neither Kim nor Wendy is the forward. Who plays guard, and what uniform number does she wear? Be sure to check both answers. A.30 B.Wendy C.Jenny D.Kim E.35 F.32

Answers

Answer:its f

Step-by-step explanation:

the only answer left i hope this helps =)

A man is walking at 7km/hr. How long will he take to cover a distance of 42km?

Answers

[tex] \: \: \: \: \: \: [/tex]

1.75hrs

Step-by-step explanation:

it would take 1.75 hrs to cover a distance of 7 kilometres by walking 4 kilometres per hour

speed= Distance/Time

= 4/1 = 4

Time Distance/Speed

= 7/4 =1.75hrs.

hope it helps

[tex] \: \: \: \: \: \: [/tex]

Find the equation of the line

Answers

This should do… all steps explained in the picture

la quinta parte de 20​

Answers

Answer:

4

Step-by-step explanation:

20/5 = 4

A furniture store receive
order for 456 chairs. They
can fit 9 chairs in a large
shipping box. How many
shipping boxes will they
need to ship all of the
chairs?

Answers

The answer is 50 or 51 because it’s 50.666 so you could round it to the nearest 10.

A $600 fax machine is on sale for 20% off. Find the amount of the discount and the sale price.

The amount of discount is $0.

The sale price is $0

Answers

Answer:

The amount of discount is $120

The sale price is $480

Step-by-step explanation:

The amount of discount = Original price × the Percentage off

The amount of discount = $600 × 20 %

The amount of discount = $600 × .20

The amount of discount = $120

The sale price = Original price - Discount

The sale price = $600 - $120

The sale price = $480

You spin each spinner once. You get $39 if you spin a 2 and a vowel. You get $26 if you spin a 2 and a consonant. You get $9 if you spin a 1 and a vowel. Everything else earns $0. What is the expected value of this game? Round your answer to the second decimal if necessary

Answers

The expected value of the game is the mean value of the game

The expected value of the game is $9

For the first spinner;

The probability to spin 2 is 1/4The probability to spin 1 is 3/4

For the second spinner;

The probability to spin a vowel is 1/4The probability to spin a consonant is 3/4

So, the probability of spinning a 2 and a vowel is:

[tex]\mathbf{P(2\ and\ vowel) = \frac 14 \times \frac 14 = \frac{1}{16}}[/tex]

The earning for spinning a 2 and a vowel is $39.

So, the expected earning is:

[tex]\mathbf{Expected = 39 \times \frac{1}{16} = 2.4375}[/tex]

So, the probability of spinning a 2 and a consonant is:

[tex]\mathbf{P(2\ and\ consonant) = \frac 14 \times \frac 34 = \frac{3}{16}}[/tex]

The earning for spinning a 2 and a consonant is $26.

So, the expected earning is:

[tex]\mathbf{Expected = 26 \times \frac{3}{16} = 4.875}[/tex]

So, the probability of spinning a 1 and a vowel is:

[tex]\mathbf{P(1\ and\ vowel) = \frac 34 \times \frac 14 = \frac{3}{16}}[/tex]

The earning for spinning a 1 and a vowel is $9.

So, the expected earning is:

[tex]\mathbf{Expected = 9 \times \frac{3}{16} = 1.6875}[/tex]

So, the expected value of the game is:

[tex]\mathbf{Game =2.4375+ 4.875 + 1.6875}[/tex]

[tex]\mathbf{Game =9}[/tex]

Hence, the expected value of the game is $9

Read more about expected values at:

https://brainly.com/question/13499496

PLEASE I NEED HELP ITS URGENT.

Answers

Answer:

Step-by-step explanation:

What's 3 1/200 as a percent?

Answers

Answer:

31200=300.5%

Step-by-step explanation:

31200=3+1200

=31+1200

=(31×200200)+1200

=600200+1200=601200

We know that

601200

is the same as

601÷200

Then using

gives us

=3.005

Convert the decimal to a percent:

3.005×100

and rounding to a Max of 2 Decimal Places

=300.5%

These points are linear.
Find the slope.

m = [?]

Answers

M= y2-y1/x2-x1
= 8-0/6-5
= 8/ 1
M=8

Plane B is flying 55mph
55

mph
faster than Plane A and can fly 4275
4275
miles in the same amount of time it takes Plane A to fly 4000
4000
miles. Find the amount of time it takes for each plane to travel their respective distances.

Answers

Answer:

It takes around 5s for each plane to travel their respective distances.

Step-by-step explanation:

It takes 5s to each plane to travel

During the summer, many homeowners struggle to keep ant's out of their homes. In a specific
kitchen, the population of a colony of ants is given by
P(t) = 42(1.168)
where P(t) is the populationand t is the number of days after June 1st.
(a)What is the daily growth rate of this ant population?
Write your answer as a percent rounded to two decimal places.
(b)What is the continuous growth rate of this ant population?
Write your answer as a percent rounded to two decimal places.
(c)When will the population reach 500 ants? Use an algebraic solving process to show
that it will take 15.95 days to reach 500 ants.

Answers

hiiiiiiiiiiiiiiiiiiiiiiiii

hallar una ecuacion de la parabola cuyo foco es (-2,2) y cuya directriz es = -8

Answers

The equation of the parabola whose focus is (-2,2) and whose directrix is x​= -8 is [tex](y+2)^2=-20(x+5)[/tex]

The standard formula for finding an equation of a parabola is expressed as [tex]y^2=4ax[/tex]

If the curve is shifted to the left and down, the equation becomes [tex](y-k)^2=4a(x-h)[/tex] where:

(h, k) is the vertex of the parabola

If the focus is at (-2, 2) and the directrix is at x = -8, the equivalent vertex of the parabola will be at (-5, -2) and the midpoint between the vertex and directrix is at a = -5

Substitute these values into the formula of the parabola.

[tex](y-k)^2=4a(x-h)\\(y-(-2))^2=4(-5)(x-(-5))\\(y+2)^2=-20(x+5)\\[/tex]

Hence the equation of the parabola whose focus is (-2,2) and whose directrix is x ​​= -8 is [tex](y+2)^2=-20(x+5)[/tex]

Learn more here: https://brainly.com/question/7243813

y= -6x + 1/2


PLEASE I NEED THE ANSWER AND EXPLANATION

Answers

Answer:

m = -6 (slope)

b = (1/2)

The Y posistion is (0, 0.5) and the slope of the graph is -6/1 (down 6, right 1).

Some examples of where the line is could be:

(1, -5.5)

(-1, 6.5)

If the equation of the line is f(x) = 1/3x - 5 , what would be the new equation if there was a reflection over the y- axis, a dilation of -6, and a translation of 4 units up?

pls help I already solved but I'm not sure if I did a step out of order

Answers

Answer: Thus, after the transformation, the graph consists of points (x,y) satisfying y=2(x−3)2. This is the equation of the transformed graph.

Step-by-step explanation:

Consider the graph y=x2. Suppose the graph is dilated from the x-axis by a factor of 2, and then translated 3 units to the right. What is the equation of the resulting graph?

Solution

The transformation given is Trans(3,0)∘Dilx-axis,2. Denote by (x′,y′) the image of a point (x,y) under this transformation. A point (x,y) is sent to (x,2y) by the dilation, and then to (x+3,2y) by the translation, so (x′,y′)=(x+3,2y).

The original graph consists of points (x,y) such that y=x2. Then it is transformed so that (x,y)↦(x′,y′)=(x+3,2y). We must find what equation is satisfied by x′ and y′.

Since x′=x+3 and y′=2y, we have x=x′−3 and y=y′/2. Thus y=x2 implies

y′2=(x′−3)2or equivalentlyy′=2(x′−3)2.

you are slicing pie for your family. Your grandmother asks for 1/3 of the pie. Your brother asks for 1/4 of the same pie. Your aunt asks for 1/2 of the remainder of the pie. How much pie is left?

Answers

After give your grandma and your brother, you only have:
1 - 1/3 - 1/4 = 5/12 ( of the pie )
After give your aunt, you have:
5/12 - 1/2 x 5/12 = 5/24 ( of the pie )

Ok done. Thank to me :>

A line has a slope of -4. The line passes through the point (-2,1). What is the point- slope form of the line?

y - 1 = -4 (x + 2)

y - 4 = -2 (x - 1)

y - 1 = 4 (x - 2)

y - 2 = -4 (x - 1)​

Answers

Answer:

the answer is A

I followed the point slope formula and added in the x and y values

If Esteban continues at the same rate, how many miles will he have traveled in 6 hours?



A. 36
B. 300
C. 360
D. 420

Answers

Answer360

Step-by-step explanation:

Three friends each create 4 bags of starter bread dough. After ten
days, each of those four bags is then divided into four more bags of
dough. How many days pass before 192 of dough are created?
1.20
2.40
3.30

Answers

Answer:

20

Step-by-step explanation:

4x3=12

12x4=48 after 10

48x4=192 after another 10

To begin each friends have made 4 bags of dough. This gives 12 bags at the outset. After 10 days all 12 bags are made into (4*12) bags or 48 bags. After 20 days the 48 bags are made into (48*4), or the required 192 bags. After 20 days then the friends have the needed 192 bags

¿De qué número es 60 el 80%?

Answers

Answer:

48

Step-by-step explanation:

Graph the number on the number line.

Answers

Answer:

Step-by-step explanation:

can u take good picture

Does anybody know the slope for these graphs?

Answers

5. 4/3 6. Undefined 7. -1

If f (g(x)) = Square root x+8, identify the inside function g(x) and the outside function f(x) of the composite function.

Answers

Answer:

Given composite function:

f(g(x)) = √(x + 8)

Possible functions that compose it:

g(x) = x + 8

and

f(x) = √x

Determine the correct equation for the following verbal sentence:
The ticket price, t, for a concert attended by 220 people equals the total revenue, r, divided by the number of people who attended.
a.
t = StartFraction r Over 220 EndFraction
c.
t = 220r
b.
t = 220 - r
d.
t = 220 + r

Answers

Answer:

t =  

Given:

The total ticket price  =t

Total number of people attended the concert =  350

Total revenue  = r

To Find:

The expression for finding the t value

Solution:

The ticket price  t  =  

Substituting the total number of people who attended the concert

t =

Step-by-step explanation:

Hope this helps:)

A 6 pound bag of grass seed covers 7,000 square feet. How many pounds would be needed to cover 23,000 square feet?

Write answer as an integer or a reduced fraction.

Answers

Answer:

Step-by-step explanation:

You can setup a proportion as follows:

 

4 lb = 9000 ft2

x lb = 25000 ft2

 

Solve for x = 25000 ft2 x 4 lb / 9000 ft2 = 11.11 lb ~ 11 lb rounded to a whole number

what is the next number 3 7 8 3 12 9

Answers

4 8 9 i believe that's it

2 paisa per 2 rupees per month​

Answers

Answer:

2 paisa per rupees per month

So rate= 2%

does 17/10 and 12/5 form a proportion?

Answers

Answer:

No

Step-by-step explanation:

17/10 is not proportional to 12/5. Proportional relationships are relationships between two variables where their ratios are equivalent.  17/10 as a ratio is 17:10 and 12/5 as a ratio would be 12:5. A proportional relationship for 12/5 would be 24/10.

Hope this helps :)

No, 17/10 and 12/5 do not form a proportion.

What is a proportion?

A proportion is an equation that sets two ratios at the same value.

We have two fractions,

17/10 and 12/5.

That means,

17/10 = 1.7

And 12/5 = 2.4

And 1.7 is not equals to 2.4.

So, the fraction does not show the proportional relationship.

Therefore,  the fraction does not show the proportional relationship.

To learn more about the proportion:

https://brainly.com/question/7096655

#SPJ2

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