Which of the following combinations of formula and name is incorrect? a nitride ion = NO2 b.chlorite ion =ClO_2 c.perchlorate ion =ClO_4− d.cyanide ion = CN

Answers

Answer 1

The incorrect combination is option b: chlorite ion = ClO₂. The correct formula for the chlorite ion is ClO₂⁻, not ClO₂.

The incorrect combination of formula and name is option b: chlorite ion = ClO₂.

Let's go through the provided options to determine which one is incorrect:

a. Nitride ion = NO₂

This combination is incorrect.

The formula for the nitride ion is N³⁻, which consists of three electrons gained by nitrogen to achieve a stable 8-electron configuration.

The correct formula for the nitride ion should be N³⁻, not NO₂.

b. Chlorite ion = ClO₂

This combination is correct.

The chlorite ion, ClO₂⁻, is composed of one chlorine atom bonded to two oxygen atoms with a charge of -1.

The chlorite ion is commonly found in compounds such as sodium chlorite (NaClO₂).

c. Perchlorate ion = ClO₄⁻

This combination is correct.

The perchlorate ion, ClO₄⁻, consists of one chlorine atom bonded to four oxygen atoms with a charge of -1.

Perchlorate is a polyatomic ion commonly found in compounds such as potassium perchlorate (KClO₄).

d. Cyanide ion = CN⁻

This combination is correct.

The cyanide ion, CN⁻, consists of one carbon atom bonded to a nitrogen atom with a charge of -1.

Cyanide is known for its high toxicity and is often found in compounds such as sodium cyanide (NaCN).

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Related Questions

Look at this square. Find the value of
S.
S
Perimeter = 16 miles
S =
miles

Answers

The value of S, which represents the length of each side of the square, is 4 miles.

To find the value of S, we need to determine the length of each side of the square. Given that the perimeter of the square is 16 miles, we can use the formula for the perimeter of a square, which is 4 times the length of a side.

Perimeter = 4 × S

Given that the perimeter is 16 miles, we can substitute this value into the equation:

16 = 4 × S

To solve for S, we divide both sides of the equation by 4:

16 ÷ 4 = S

4 = S

Therefore, S, which stands for the square's side lengths, has a value of 4 miles.

So, S = 4 miles.

This means that each side of the square measures 4 miles, and the square has equal sides and right angles at each corner.

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what is the slope and y-intercept for y=1/2+4x​

Answers

Slope: 4
Y-intercept = 1/2

Answer:

- 1/4 slope

y-intercept: 2

pls mark me brainless if im right.

What is the domain and range of the following relation? Is it a function?{(1, 1), (2, 2), (3, 5), (4, 10), (5, 15)}

Answers

The given relation is a set of ordered pairs {(1, 1), (2, 2), (3, 5), (4, 10), (5, 15)}. The first element of each pair represents the input or domain value, and the second element represents the output or range value.

The domain of the relation is the set of all first elements of the ordered pairs, which is {1, 2, 3, 4, 5}. The range of the relation is the set of all second elements of the ordered pairs, which is {1, 2, 5, 10, 15}.

To check whether the relation is a function or not, we need to ensure that each input value (i.e., element of the domain) is associated with a unique output value (i.e., element of the range). In other words, there should not be more than one ordered pair with the same first element.

In this case, each input value is associated with a unique output value, so the relation is indeed a function. Specifically, it is a function from the set of integers {1, 2, 3, 4, 5} to the set of integers {1, 2, 5, 10, 15}.

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Helpppppppppppppppppppppppppppppppppppppppppppppppppppppppppp

Helpppppppppppppppppppppppppppppppppppppppppppppppppppppppppp

Answers

Answer:

a = 26.241

b = 47.448

Step-by-step explanation:

Question 23 of 40
If f(x) = 2x+5, which of these is the inverse of f(x)?
O A¹(x)--5
OB. F-¹(x)=x+5
O c. 1¹(x)=x-5
OD. ¹(x)=+5

Answers

f^{-1} (x) = \frac{1}{2} x - \frac{5}{2} is of these is the inverse of f(x).

What is in slope-intercept form?

Given the slope of the line and the intercept it forms with the y-axis, one of the mathematical forms used to derive the equation of a straight line is called the slope intercept form. Y = mx + b, where m is the slope of the straight line and b is the y-intercept, is the slope intercept form.

f(x) = 2x+5

y = 2x + 5

x = 2y + 5

x - 5 = 2y

x - 5/2 = y

\(f^{-1} (x) = \frac{x - 5}{2}\)

the final equation in slope- intercept form.

So,  \(f^{-1} (x) = \frac{1}{2} x - \frac{5}{2}\)

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How many solutions y=5x-4 y=5x-5

Answers

Answer:

No solution

Step-by-step explanation:

Any equations with the same slope are parallel, or will never intersect.

In a slope-intercept equation, this would mean the 'm' values are the same.

y = mx + b

Two equations:

y = 5x - 4

y = 5x - 5

Since the two equations given have the same slope, they will never intercept and therefore have no solution.

In ΔKLM, the measure of ∠M=90°, ML = 8, LK = 17, and KM = 15. What is the value of the cosine of ∠L to the nearest hundredth?

Answers

In ΔKLM, that measure ∠M = 90°, ML = 8, LK = 17, and KM = 15. cosine of L is 0.88

How to find the cosine of L

The cosine of L is worked using SOH CAH TOA

Sin = opposite / hypotenuse - SOH

Cos = adjacent / hypotenuse - CAH

Tan = opposite / adjacent - TOA

The triangle described is a right triangle of

opposite = 8

adjacent = 15

hypotenuse = 17

The cosine of L is calculated using cos, CAH

let the angle be x

Cos x = adjacent / hypotenuse

cos x = 15 / 17

x = arc cos (15/17)

x = 28.07 degrees

cosine of L = 15/17 = 0.88

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Ms. Lopez is creating posters to decorate
her classroom. She uses 0.25 ounce of paint
per poster. If she has 4.05768 ounces of
paint, how many posters can she make?

Answers

4.05768/.25=16.23072 so 16 posters

a/6-1/2=1/3 thats 7 grade math

Answers

Answer: a = 5

Step-by-step explanation:

a/6-1/2=1/3

a/6 = 1/3 + 1/2

a/6 = 2/6 + 3/6

a/6 = 5/6

a = 5

Check:

5/6-1/2 = 1/3 ?

5/6 - 3/6 = 1/3?

2/6 = 1/3  ?

1/3 = 1/3   YES

Answer:

a = 5

Step-by-step explanation:

a/6 - 1/2 = 1/3

=> a/6 = 5/6

=> a = 5

Hoped this helped.

ANWSER ASAP
Which description can be used for each item?


Drag each description that matches cell wall or cell membrane into the correct box.



cell wall
cell membrane




key word(s)

is not grid

more selectively controls what goes in and out of the cell

gives a plant cell it shape

rigid

acts like a skin

Answers

that other answer is a virus dont click it

cell wall : gives plant cell its shape, rigid

cell membrane: more selectively controls what goes in and out of the cell, acts like a skin

dunno about grid

What values of x and y satisfy the system
y = −2x + 3
y = 5x - 4

Answers

The most appropriate choice for simultaneous linear equation will be given by -

x = 1, y = 1

What is simultaneous linear equation?

At first it is important to know about linear equation

Equation shows the equality between two algebraic expressions by connecting the two algerbraic expressions by an equal to sign.

A one degree equation is known as linear equation.

Two or more linear equations, which can be solved together to obtain common solution are known as simultaneous linear equation.

Here,

y = −2x + 3

y = 5x - 4

So, -2x + 3 = 5x - 4

5x  + 2x = 3 + 4

7x = 7

\(x = \frac{7}{7}\\x = 1\)

Putting the value of x in the first equation'

y = \(- 2\times 1 +3\)

y = 1

So, x = 1, y = 1

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The measure of each edge length of a unit cube is?

Answers

Answer:

1 unit long.

Step-by-step explanation:

I HAVE THE POWER OF GOD AND ANIME ON MY SIDE

DEATH NOTE

Write the first expression in terms of the second if the terminal point determined by t is in the given quadrant. cos(t), sin(t); quadrant iv

Answers

if the terminal point indicated by t is in the provided quadrant, the first equation in terms of the second quadrant iv; cos(t), sin(t). \(\sin t=\sqrt{1-\frac{1}{\sec ^2 t}}\)

What is Trig Identities?

Trig identities come in handy when we need to express one trig function in terms of another. The most famous trig identity is derived straight from the Pythagorean Theorem:

sin² t +  cos² t = 1

According to the given data:

For an angle t in Quadrant IV, we know sin t is positive.

From the trig identity sin² t +  cos² t = 1

we can also write as:

sin t + cos t:

Now,

sin² t + cos² t = 1

sin² t   = 1 -  cos² t

sin t = ±√( 1 -  cos² t)

As noted above,

sin t is positive for t in the Quadrant IV, and so we have

sin t = √( 1 -  cos² t)

We know that

\(\cos t=\frac{1}{\sec t}\)

So, the equation will be

\(\sin t=\sqrt{1-\frac{1}{\sec ^2 t}}\)

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A new cylindrical can with a diameter of 6 cm is being designed by a local company. The surface area of the can is 150 square centimeters. What is the height of the can? Estimate using 3.14 for n, and round to the nearest hundredth. Apply the formula for surface area of a cylinder SA = 2B + Ph.

Answers

The height of the can is 4.96 cm

The formula for surface area of a cylinder is,

SA = 2B + Ph

where B represents the area of one base.

P is the perimeter of the base

and h is the height of the cylinder

Here, the diameter of the can is 6 cm

so, the radius r would be 6/2 = 3 cm

The base of the can is circular.

Using the formula for the area of circle the base area would be,

B = π × r²

B = π × 3²

B = 28.27 sq. cm.

And the perimeter of the circular base is nothing but the circumference of circle.

P = 2πr

P = 2π(3)

P = 6π

P = 18.85 cm

Here, SA = 150 sq.cm.

Substituting values in above formula,

SA = 2B + Ph

150 = 2(28.27) + (18.85)h

h = (150 - 56.54) /  (18.85)

h = 4.96 cm

This is the required height of the can.

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what is (5,12) reflected across the y-axis?

Answers

Answer:

-5,12 because its to the right obviously you rflect it to the left because its y axis and boom -5,12

Step-by-step explanation:

Answer:

(-5,12)

Step-by-step explanation:

because when you flip it across the y axis you change the first number in the coordinates

I Need Help With This Question ​

I Need Help With This Question

Answers

Answer:

Step-by-step explanation:

Dont do it. Just take the detention

How do you do multiple long?

Answers

Main answer:Long multiplication is a method of multiplying two difficult-to-multiply numbers.

supporting answer:

what is multiple long?

Finding the product is not always this simple. In such cases, the long method of multiplication is used.

body of the answer:

let us understand long multiplication by taking an example

Write the two numbers one beneath the other in the order of their digits. On top, write the larger number, and on the left, a multiplication sign.Multiply the top number's one digit by the bottom number's one digit.Put a 0 below the ones digit,Multiply the top number's ones digit by the bottom number's tens digit.Multiply the top number's tens digit by the bottom number's tens digit.

     6.Add the two partial products

final answer: by following above steps we can perform long multiplication

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Long multiplication is a method of multiplying two difficult-to-multiply numbers.

What is multiple long?

Finding the product is not always this simple. In such cases, the long method of multiplication is used.

Let us understand long multiplication by taking an example

1. Write the two numbers one beneath the other in the order of their digits. On top, write the larger number, and on the left, a multiplication sign.

2. Multiply the top number's one digit by the bottom number's one digit.

3. Put a 0 below the one's digit,

4. Multiply the top number's ones digit by the bottom number's tens digit.

5. Multiply the top number's tens digit by the bottom number's tens digit.

6. Add the two partial products

By following the above steps we can perform long multiplication

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suppose that you and a friend are playing cards and decide to make a bet. if your friend draws two non-face cards, where a face card is a jack, a queen, or a king, in succession from a standard deck of 52 cards replacing the first card, you give him $30. otherwise, he pays you $50. if the same bet was made 20 times, how much would you expect to win or lose? round your answer to the nearest cent, if necessary.

Answers

I will win about $ 59.

This is a question of permutations and combinations.

We know that,

Probability of getting two non face cards = \(\frac{^{40}C_2}{{^{52}C_2}}\) = 10/17

Probability of not getting two non face cards = 1 - (10/17) = 7/17

Hence, we can write,

Money I will get = (7/17)*50*20 =  $ 411.764

Money I'll have to pay = (10/17)*30*20 = $ 352.94

We know that,

Money left with me = Money I will get - Money I'll have to pay

Hence, we can write,

Money left with me =   $ 411.764 - $ 352.94

Money left with me =  58.824 ≈ $ 59

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What are the zeros of f(x) = x^2 + x - 20?

Answers

Answer:

{-5, 4}

Step-by-step explanation:

Start by factoring f(x) = x^2 + x - 20.  Since 4*5 = 20, we suspect that the factors are (x + 5) and (x - 4).

Next, set these factors equal to zero separately and solve each resulting equation for x.  We get:

{-5, 4}

How do you find the volume of cubes and rectangular prisms?

Answers

To find the volume of a cube or rectangular prism, multiply the length, width, and height of the shape. The formula is V = l × w × h, where V represents volume, l represents length, w represents width, and h represents height.

Cubes and rectangular prisms are both three-dimensional shapes, which means they have volume. Volume is the amount of space an object occupies. To find the volume of a cube or rectangular prism, you need to know its dimensions. The dimensions of a cube or rectangular prism are its length, width, and height.
Volume of a Cube
A cube is a three-dimensional shape that has six equal square faces. To find the volume of a cube, you need to know the length of one of its sides. The formula for finding the volume of a cube is:
Volume = side x side x side
Or
V = s³
Where V is the volume and s is the length of one of its sides.
Volume of a Rectangular Prism
A rectangular prism is a three-dimensional shape that has six faces. The faces of a rectangular prism are rectangles. To find the volume of a rectangular prism, you need to know the length, width, and height of the shape. The formula for finding the volume of a rectangular prism is:
Volume = length x width x height
Or
V = lwh
Where V is the volume, l is the length, w is the width, and h is the height of the rectangular prism.
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A pyramid has a base that is a right triangle with legs measuring 10 cm and 14 cm. The height of the pyramid is 9 cm.

The volume of the pyramid is ___ cubic cm.

Answers

Answer: Volume = 42 cubic cm.

Explanation: Equation to find a pyramid is l x w x h / 3, so you multiply the length, width, and height to get 1260. Divide that by 3, and you get 420.

A man borrowed naira 1250 and paid interest of 300 naira in 4 years, what was the rate of interest​

Answers

Answer:

The answer is 6%

Step-by-step explanation:

\( i = \frac{prt}{100} \)

300=1250×4×r/100

30000=5000r

divide both sides by 5000

5000r/5000=30000/5000

r=6%

What is the solution to this equation?
X-8 = 15
O A. x= 17
O B. x = 23
O c. x = 13
O D. x = 7

Answers

Answer:

\( \boxed{ \bold{ \huge{ \boxed{ \sf{ x = 23}}}}}\)

Option B is correct.

Step-by-step explanation:

\( \star{ \text{ \: \: x - 8 = 15}}\)

\( \text{Step \: 1 \: : Move \: 8 \: to \: right \: hand \: side \: and \: change \: its \: sign}\)

\( \hookrightarrow{ \sf{x = 15 + 8}}\)

\( \text{Step \: 2 \: : Add \: the \: numbers \: : 15 \: and \: 8}\)

\( \hookrightarrow{ \sf{x = 23}}\)

\( \sf{ \: The \: value \: of \: x \: is \: 23.}\)

\( \sf{Hope \: I \: helped !}\)

\( \sf{Best \: regards!!}\)

~\( \sf{TheAnimeGirl}\)

Express tan C as a fraction in simplest terms.
Answer: tan C =
D
50
14
E
Submit Answer
pag
pang

Express tan C as a fraction in simplest terms.Answer: tan C =D5014ESubmit Answerpagpang

Answers

The value of tanC is 7/24

What is trigonometric ratio?

Trigonometric Ratios are defined as the values of all the trigonometric functions based on the value of the ratio of sides in a right-angled triangle.

Sin(tetha) = opp/hyp

cos(tetha) = adj/hyp

tan(tetha) = opp/adj

Using Pythagoras theorem, we need to find the adjascent to angle C

adj = √ 50²-14²

adj = √(2500-196)

adj = √ 2304

adj = 48

Therefore tanC = 14/48

= 7/24

therefore the value of tanC = 7/24

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A submarine that is already at 605 feet below sea level ascends (rises up) 475 feet before descending (sinking down) another 255 feet.

Answers

Answer:

-350ft

Step-by-step explanation:

so basically 605 is negative and 255 is a negative then you add those two then it would be -860 then you subtract the positive 475 and that will equal -350

Explain how you would determine the slope and y-intercept of a line
when given a table, graph and an equation.
I KISS YOUR TOES IF YOU HELP ME

Answers

Answer:

slope is m= y_2-y_1/x_2-x_1 and the y-intercept is where the line crosses over the x-axis

Step-by-step explanation:

fill in the points and do the equation m= rise(y points)/ run(x points)

m=slope

(x_1, y_1) =coordinates of first point in the line

(x_2, y_2)=coordinates of second point in the line

Exercise. A curve C is described by the vector-valued function (t) (1+ 2t, 3- 4t,67t) Exercise. Find a vector parallel to the curve when t-1: -4 7 Exercise. Find all t-values where l and e' are orthogonal. t1/2, 3/4,-6/7 Previous

Answers

A vector parallel to the curve described by the vector-valued function (t) when t = -4 is (-7, -11, -268). The t-values where l and e' are orthogonal are t = 1/2, t = 3/4, and t = -6/7.

The vector-valued function (t) = (1 + 2t, 3 - 4t, 67t) describes the curve C. To find a vector parallel to the curve when t = -4, we substitute t = -4 into the function and calculate the resulting vector. Plugging in t = -4, we get (-7, -11, -268), which represents a vector parallel to the curve at that particular point.

Next, we need to find the t-values where l and e' (two vectors) are orthogonal. Two vectors are orthogonal when their dot product is zero. Given the values t = 1/2, t = 3/4, and t = -6/7, we substitute these values into the vectors l and e' and calculate their dot product. If the dot product equals zero, it indicates orthogonality. Therefore, t = 1/2, t = 3/4, and t = -6/7 are the t-values where l and e' are orthogonal.

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Please Help Me Guys :)

Please Help Me Guys :)

Answers

Answer:

5. x=80°, y= 80°

Step-by-step explanation:

5.x=80 (Vertically opposite angle V.O.A)

y=80 (alternate angle)

guys pls help me!!!!!!

guys pls help me!!!!!!

Answers

Answer:

136 degrees

Step-by-step explanation:

136 degrees + 44 degrees = 180 degrees

Answer:

x = 136 degrees

Step-by-step explanation:

180 - 44 = 136

Both angles are supplementary

Please answer quickly

Please answer quickly

Answers

Answer:

10

Step-by-step explanation:

given :

length WX ≅ (congruent means equal) length XY

therefore ,  WX = 3

WZ = WX + XZ

WZ = 3 + 7

WX = 10

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