Calculate the mass-volume percent of 5.0 g of magnesium chloride (MgCl2) in enough water to give 250 mL of solution.

Patulong po tysm!

Answers

Answer 1

Answer:

250*5.0=125.0

Step-by-step explanation:

250*5.0=125.0

Answer 2

Considering the definition of mass-volume percent, the mass-volume percent of 5.0 g of magnesium chloride in enough water to give 250 mL of solution is 2%.

Mass-volume percent

Mass-volume percent is a measure of concentration that indicates the number of grams of solute in each 100 mL of solution. It is an intensive property, that is, it does not depend on the amount of material.

Mass-volume percent is defined as the mass of solute in grams divided by the total volume of the solution in milliliters. To express this as a percent, we multiply this fraction by 100:

\(Mass-volume percent=\frac{mass of solute}{volume}x100\)

Mass-volume percent of magnesium chloride

In this case, you know:

mass of solute= 5 gvolume= 250 mL

Replacing in the definition of mass-volume percent:

\(Mass-volume percent=\frac{5 g}{250 mL}x100\)

Solving:

Mass-volume percent= 2%

Finally, the mass-volume percent of 5.0 g of magnesium chloride in enough water to give 250 mL of solution is 2%.

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Related Questions

james scored 182 points while playing a video game. he scored 7 times as many points as jada scored.how many points did jada score?

Answers

The points jada score is 159.25.

Given that james scored 182 points while playing a video game and he scored 7 times as many points as jada scored.

Let x be the points scored by james and y be the points scored by jada.

The total points scored by james and jada is 182 points.

x+y=182    .....(1)

James scored 7 times many points as jada scored.

y=7x         .....(2)

So, there are two equations and two unkowns.

Firstly, we will substitute equation (2) in equation (1), we get

x+7x=182

8x=182

Divide both sides by 8, we get

8x/8=182/8

x=22.75

Further, we will substitute the value of x in equation (2), we get

y=7×22.75

y=159.25

Hence, the jada score 159.25 when james scored 182 points while playing a video game and ahe scored 7 times as many points as jada scored.

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what poggers means as used in this sentence, *clears throat* Mr Williams, Now that was uhh. He stumbled for a bit and then found the word, "Poggers"

Answers

Answer:

wha are you on abt

Step-by-step explanation:

like honestly

i need real bad help on this question I do not understand at all

i need real bad help on this question I do not understand at all

Answers

Answer: 3.525, 3.25, 3.75

Step-by-step explanation:

This makes sense because these values are all .25 or less away from 3.5

Give brainly please

Its due today plz help me out
Find the value of X?

Its due today plz help me out Find the value of X?

Answers

Answer:

168

Step-by-step explanation:

the angles of a hexagon should add us to 720, subtract all teh given angles from the total and you find x.

Help I do not understand

Help I do not understand

Answers

To find the solution of the system of equations, you need to find the coordinates of where the two graphs intersect. In this case they intersect at two points which are (-1,0) and (4,-5).

I don’t understand why the -5+-2 is 7…x? Why do we put the x?? Also why is -5*-2=-10? Shouldn’t it be 10?

I dont understand why the -5+-2 is 7x? Why do we put the x?? Also why is -5*-2=-10? Shouldnt it be 10?

Answers

Answer:

\(\frac{11x-10}{x^2-2x}\)

Given:

\(\frac{x+4}{x-2}-\frac{x-5}{x}\)

First, we will find the common denominator for us to be able to subtract the terms:

\(\frac{x(x+4)-(x-5)(x-2)}{x(x-2)}\)

Simplify the expression by performing the operation:

\(\begin{gathered} \frac{x^2+4x-(x^2-5x-2x+10)}{x^2-2x} \\ =\frac{x^2+4x-(x^2-7x+10)}{x^2-2x} \end{gathered}\)

*Distribute the negative sign inside the parenthesis

\(\frac{x^2+4x-x^2+7x-10}{x^2-2x}\)

Simplify by adding like terms:

\(\begin{gathered} \frac{x^2+4x-x^2+7x-10}{x^2-2x} \\ =\frac{11x-10}{x^2-2x} \end{gathered}\)

Therefore, the final answer would be:

\(\frac{11x-10}{x^2-2x}\)

Note:

The -7x and 10 became the opposite signs because we had to distribute the negative sign present before the parenthesis that indicates the subtraction operation.

who solves your disputes in the games​

Answers

Answer:

of course ,the refree or the umpire

You have $300,000 saved for retirement. Your account earns 9% interest. How much will you be able to pull out each month, if you want to be able to take withdrawals for 25 years?

Answers

Answer:$121,000 a month

Step-by-step explanation:

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just thought these were funny alkjhdlkjshf
just thought these were funny alkjhdlkjshf
just thought these were funny alkjhdlkjshf

Answers

Answer: free point

Step-by-step explanation:

Which set represents the range of the function g(x) - 14 -2x if the domain is x = { 2,4,9}?

A y = {2.5,5,8)
By = { 4,6,18)
C y = {10, 22, 32)
D All real numbers

Answers

The set which represents the range of the function g(x) = 14 -2x if the domain is x = { 2,4,9} is; y = {10, 6, -4)

Domain and range

The set which represents the range of the function for the given domain can be gotten as follows;

g(2) = 14 -2(2) = 10

g(4) = 14 -2(4) = 6

g(9) = 14 -2(9) = -4

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researcher created three groups based on participants BMI: normal weight, overweight and obese. The hypothesis being tested is that the three groups differ in the mean number of artificially sweetened drinks consumed weekly. Which statistical test might the researcher use, assuming a reasonable normal distribution of values?
A repeated measures ANOVA
An independent group t test
One way ANOVA
A chi-squared test

Answers

To test the hypothesis of mean differences in artificially sweetened drink consumption among BMI groups, assuming a normal distribution, the researcher might use a one-way ANOVA.

The one-way ANOVA compares the means of three or more independent groups and determines if there are statistically significant differences among them. In this case, the BMI groups (normal weight, overweight, and obese) represent the independent groups, and the number of artificially sweetened drinks consumed is the dependent variable. By conducting a one-way ANOVA, the researcher can assess if there are significant differences in mean consumption among the BMI groups and draw conclusions regarding their hypothesis.

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The cost of 2 kg of mushrooms and 2.5 kg of turnips is £8.55. The cost of 3 kg of mushrooms and 4 kg of turnips is £13.10. Work out the cost of
a) 1 kg of turnips.
b) 1 kg of mushrooms.

PLEASE ANSWER ASAP​

Answers

Step-by-step explanation:

x = cost of 1 kg mushrooms

y = cost of 1 kg turnips

2x + 2.5y = 8.55

3x + 4y = 13.10

so, we have a system of 2 equations with 2 variables.

this can be solved either by

substitution (we use one equation to express one variable by the other, and use that result in the second equation to solve for the second variable, and then use that result again in the first equation to solve for the first variable)

or by

elimination (we multiply both equations by fitting factors, so that then the sum of both results delivers one equation with one remaining variable. that result we use then in any of the original equations to solve for the other variable).

this here looks (for me) better for elimination.

we bring the first equation to something with 6x, and the second one to something with -6x, abd then we add them.

so, we multiply the first equation by 3, and the second equation by -2 :

6x + 7.5y = 25.65

-6x - 8y = -26.20

-------------------------------

0 -0.5y = -0.55

y = -0.55/-0.5 = £1.10

for x I suggest now to use the second original equation :

3x + 4y = 13.10

3x + 4×1.10 = 13.10

3x + 4.40 = 13.10

3x = 8.70

x = 8.70/3 = £2.90

a) 1 kg of turnips cost £2.90

b) 1 kg if mushrooms cost £1.10

³→β\(n\) hkhkkeglkglrnl

Answers

Kool


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Find the value of x for C below. (4x +15) (6x +3)"​

Find the value of x for C below. (4x +15) (6x +3)"

Answers

Answer:

x = 25

Step-by-step explanation:

drag each item to its correct place es de monomios​

drag each item to its correct place es de monomios

Answers

Answer:

Step-by-step explanation:

-2x

Grado : 1

Coefficiente  : -2

Parte literal :   x

x²y⁴:

Grado : 2+4 = 6

Coefficiente  : 1

Parte literal :   x²y⁴

Will mark brainly
Angles Test

Will mark brainlyAngles Test

Answers

Answer:

B.

Step-by-step explanation:

complantary angles add up to 90 degrees so 90-24 is 66

Answer:

1. A

2.B

Step-by-step explanation:

Supplement angles add up to 180°

Complement angles add up to 90°

Math geometry help please show work thanks

Math geometry help please show work thanks

Answers

Part (a)

Refer to the diagram below to see the two triangles separated.

================================================

Part (b)

If the 3 meter portion is perpendicular to the horizontal portion, then the triangles are similar. We can prove this using the AA similarity theorem. One pair of angles would be the shared overlapping 25 degree angles. The other pair of congruent angles would be the two 90 degree angles. We only need two pairs of congruent angles to use AA. You could use three pairs (and the aptly named AAA theorem) but that's overkill in my book.

================================================

Part (c)

There are a few ways to approach this, but one way is shown below

y/3 = (8.4+6.6)/(6.6)

y/3 = 15/(6.6)

6.6y = 3*15 .......... cross multiply

6.6y = 45

y = 45/(6.6)

y = 6.81818 approximately

When rounding to one decimal place, we get y = 6.8

Math geometry help please show work thanks

Please answer this question asap

Please answer this question asap

Answers

A= -5
B= 3
C= -21
I hope this helped!

how do I know what is the segment of a triangle?

Answers

The segment of a triangle is the median of the triangle. This is the line that join a vertex of the triangle to the opposite side of the triangle.

how do I know what is the segment of a triangle?

A town's population went from 25,800 to 42,600 in 15 years. What was the percent of change?
A. 45%
B. 39.4%
C. 61%
D. 65.1%

Answers

65.1%. is the correct answer

On an average day, a horse might drink 50 L a sheep might drink 4 l and a chicken might drink 200 mL how much water would a farm need with 4 horses 8 sheep and 16 chickens need for a day

Answers

Answer:

The farm would need 235.2 liters daily for 4 horses, 8 sheep and 16 chickens.

Step-by-step explanation:

The daily consumption of water in the farm must be:

\(x = (4\,horses)\times \left(50\,\frac{L}{horse} \right) + (8\,sheep)\times \left(4\,\frac{L}{sheep} \right) + (16\,chickens)\times \left(0.2\,\frac{L}{chicken} \right)\)

\(x = 235.2\,L\)

The farm would need 235.2 liters daily for 4 horses, 8 sheep and 16 chickens.

If mr. kirov continues to make monthly payments of $100 and does not make any new purchases, how many more payments will he need to make before the balance is 0? 4 payments 5 payments 6 payments 7 payments

Answers

The number of more payments which Mr. Kirov will have to make before the balance becomes 0 is equal to 5 payments.

To calculate the balance, the use of Present Value of an Ordinary Annuity Formula is used. The formula is given as follows:

Present Value =\(P*(\frac{1- [1/(1+r)^n]}{r})\) …. (1)

In the given formula,

PV = Present value or the first balance = $800

P = Monthly payment = $100

r = Monthly interest rate = 0.012

n = number of months (It is equal to total number of payments made until balance turns zero)

Putting the values of above variables into equation (1) and solving for n, we get:

800 = 100*((1 - (1 / (1 + 0.012))^n) / 0.012)

800/100 = (1 - (1 / 1.012)^n) / 0.012

8*0.012 = 1 - (0.9881)^n

0.096 = 1 - (0.9881)^n

⇒ (0.9881)^n = 1 – 0.096

⇒ (0.9881)^n = 0.904

Taking the log of both sides, we have:

n*log(0.9881) = log0.904

n = log0.904 / log0.9881

n = -0.0438315 / -0.005180

n = 8.4608 ≅ 8

Since three payments were already made by Mr. Kirov as per the data in the question, therefore the number of more payments which he will have to make before the balance becomes 0 is calculated as:

Number of extra payments = n – 3 = 8 – 3 = 5 payments

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Refer to complete question below:

The table shows a schedule of Mr. Kirov's plan for paying off his credit card balance.

Mr. Kirov's Payment Plan

Balance 1 = $800.00

Payment 1 = $100

New Balance 1 = $700.00

Rate 1 = 0.012

Interest 1 = $8.40

Balance 2 = $708.40

Payment 2 =$100

New Balance 2 = $608.40

Rate 2 = 0.012

Interest 2 = $7.30

Balance 3 = $615.70

Payment 3 = $100

New Balance 3 = $515.70

Rate 3 = 0.012

Interest 3 = $6.19

If Mr. Kirov continues to make monthly payments of $100 and does not make any new purchases, how many more payments will he need to make before the balance is 0?

The table shows the number of different categories of books that Mrs. Hoover, the librarian, sold at the book fair on Thursday.


If Mrs. Hoover sells 50 books at the book fair on Friday, which prediction for Friday is NOT supported by the data in the table?

Question 2 options:

A. The difference between the number of sports and trivia books sold and the number of arts and crafts books sold on Friday will be 12.

B. The number of non-fiction books sold on Friday will be two-and-a-half times the number of arts and crafts books sold on Friday.

C. The combined Friday sales for non-fiction books and novels will be 30 books.

D. The number of novels sold on Friday will be 10 times the number of non-fiction books sold on Friday.

The table shows the number of different categories of books that Mrs. Hoover, the librarian, sold at

Answers

The number of non-fiction books sold on Friday will be two-and-a-half times the number of arts and crafts books sold on Friday. Therefore, option B is the correct answer.

We can see from the table that on Thursday, 7 sports and trivia books and 19 arts and crafts books were sold, for a difference of 12.

On Thursday, 13 non-fiction books and 19 arts and crafts books were sold. If we assume that the same ratio will hold on Friday, then we can predict that the number of non-fiction books sold will be (19/2)×2.5 = 23.75, which is not a whole number. Therefore, this prediction is not supported by the data.

Therefore, option B is the correct answer.

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someone please help me with this ! (No links) I would really appreciate the help !

someone please help me with this ! (No links) I would really appreciate the help !

Answers

Answer: Since this is the right triangle so

\(Sin B = \frac{AC}{AB} =\frac{AC}{6} \\=> AC = sin(20) * 6 = 5.478 = 5.48\)

Apply Pythagorean theorem:

\(AC^{2} +CB^{2} =AB^{2} \\5.48^{2} +CB^{2} =6^{2}\)

\(CB = \sqrt{6^{2} -5.48^{2} } = 2.44\)

A sandbox has a volume of 330 cubic feet of sand. If the sandbox is 3 feet tall, and 10 feet wide, what is the length of the sand box?

Answers

Answer:

We are given that the total volume of the sandbox is 330 cubic feet.
We are given the side measurements of 3 feet tall and 10 feet wide.
3 x 10 = 30 sq2

V(volume)= 330 ft3

330 ft3 divided by 30 sq2 = 11ft

In conclusion, the length of the box would be:
= 11 ft



Step-by-step explanation:

Have a great rest of your day
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A sandbox has a volume of 330 cubic feet of sand. If the sandbox is 3 feet tall, and 10 feet wide, what

please help i have no idea how to do this

please help i have no idea how to do this

Answers

The 95th term of the geometric sequence is:

a₉₅ = 18. A.

To calculate the 95th term of a geometric sequence with a₁ = 18 and r = -1, we can use the formula for the nth term of a geometric sequence:

aₙ = a₁ × r⁽ⁿ⁻¹⁾.

Plugging in the given values, we have:

a₉₅ = 18 × (-1)⁽⁹⁵⁻¹⁾

Now let's simplify the expression:

a₉₅ = 18 × (-1)⁹⁴

= 18 × 1 (since (-1)⁹⁴ equals 1)

The formula for the nth term of a geometric sequence, a = a1 r(n1), may be used to get the 95th term of a series with the parameters a1 = 18 and r = -1.

When we enter the values provided, we get:

a₉₅ = 18 × (-1)⁽⁹⁵⁻¹⁾

Let's now make the expression simpler:

a₉₅ = 18 × (-1)94 = 18 1 (because 94 minus 1 equals 1)

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Helppp, 60 points!!!

Helppp, 60 points!!!

Answers

Answer:

the answer is c

Step-by-step explanation:

please mark this answer as brainliest

Answer:

The answer is c

Step-by-step explanation:

By moving 5 units to the right you lend at x-1 y-3

Forty tickets at $10.50 each cost?

Answers

Answer:

This question isn't worded properly but I'll try my best to answer it. What I think you're trying to ask is "How much money would 40 tickets cost?"

Step-by-step explanation:

Well,  to make the multipulcation easier you would take away the zero just for now. It should look like this: 4x$10.50=42

Your answer is $42, but then you add the zero back on to that. So now the answer is $420.

$420 is your final answer

Thanks, I hope this helped! If it did I wouldn't mind being mark brainlist!


Mrs. Chase hired a landscaping service to plant a row of bushes around her triangular backyard. If the bushes
must be planted 3 feet apart, approximately how many bushes are needed for the backyard? (4 points work,
1-point final answer)
12
30

Mrs. Chase hired a landscaping service to plant a row of bushes around her triangular backyard. If the

Answers

The number of bushes that is approximately needed for Mrs. Chase's backyard is 23 bushes

How many bushes are needed?

The number of bushes needed = perimeter of the backyard / 3 feet

The perimeter of the backyard is the sum of the three sides of the right triangle that is the shape of the backyard. The length of the third side would be detemined using Phythagors theorem.

Length of the third side : √30² - 12² = 27.50 feet

Perimeter of the backyard = 27.50 + 12 + 30 = 69.50 feet

The number of bushes needed =69.50 / 3 = 23.17 = 23 bushes

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The mean value of land and buildings per acre from a sample of farms is $1400, with a
standard deviation of $200.
The data set has a bell-shaped distribution. Assume the number of farms in the sample is 74.

(a) Use the empirical rule to estimate the number of farms whose land and building values per acre are between $1000 and $1800.

___ farms (Round to the nearest whole number as needed.)

Answers

Answer:

In this case, the mean is $1400, and the standard deviation is $200.

So, one standard deviation of the mean is 1400+200= $1600 and 1400-200 = $1200.

Therefore, according to the empirical rule, approximately 68% of the farms will have land and building values per acre between $1200 and $1600.

To estimate the number of farms that fall within this range, we can multiply the total number of farms (74) by 0.68.

(74)*(0.68) = 50.32 or about 50 farms

So, according to the empirical rule, approximately 50 farms will have land and building values per acre between $1000 and $1800.

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