Identify which one of the following is a formula unit:NaCl,H2O,HCl,HNO3

Answers

Answer 1

Based on the definition of the formula unit, the only one that is an example of this concept is NaCl.

What is a formula unit?

In chemistry, this concept refers to the representation of an ionic compound. This formula differs from others because it displays the lowest possible ratio in which the ions have the same charges and therefore the compound is neutral.

What is one example of this formula?

A classical example of this concept is NaCl because this includes a cation (positively charged) and an anion (negatively charged). Moreover, in this formula, the compound shows the lowest possible ratio between the two elements.

Learn more about compounds in: https://brainly.com/question/13516179


Related Questions

Question
The dimensions of a cereal box are shown below.
32 cm
9 cm
21 cm
What is the volume of the box?

Answers

Answer:

6048 cm2

Step-by-step explanation:

32*9*21

Finding volume is simple as pie for a cube.

Length*Height*width

HELP
10 points
And brainleist

Answers

Answer:

5 and 6 are vertical

1 and 2 are linear pair

Step-by-step explanation:

1 and 2 are linear pair because they add up to 180 degrees

5 and 6 are across from each other so they are vertical angles

Find the greatest common factor of 34 and 36.

Answers

Answer:

2

Step-by-step explanation:

Factors of 34 include : 1,2,17 and 34

Factors of 36 are : 1,2,3,4,6,9,12,18,36

The only two common are 1 and 2

2 is greater tha one

So the gcf is 2.

Brainliest would be appreciated

Answer:

The greatest common factor is 2.

Step-by-step explanation:

You need to find the greatest common factor between 34 and 36.

Factors of 34: 1, 2, 17, and 34.

1*34=34

2*17=34

17*2=34

34*1=34

Factors of 36: 1, 2, 3, 4, 6, 9, 12, 18, and 36.

Therefore, the greatest common factor of 34 and 36 is 2, which is our answer.

I hope this helps! Let me know if you have any questions.

What is the probability of rolling a 7 or 8 on an 8-sided die?

Answers

Answer:

2/8

Step-by-step explanation:

denominator is 8 as it's the total of the entire dice.

your numerator is 2 as you only have 1 #8 and 1 #7 so 1+1=2

answer is 2/8

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Pretest: Extending to Three Dimei
Submit Test
Reader T
The height of a cone is two times its base diameter. What is the volume of the cone in terms of its base radius r?
a
OA V = ?
7 x
B.
V=2 / 28
AP
C.
=
3
gard
OD. V-17

Answers

Answer:

B) V= 4/3πr^3

Step-by-step explanation:

The volume of the cone according to the given condition is V = 4πr³/3

What is cone?

A cone is a three-dimensional geometric shape that tapers smoothly from a flat base to a point called the apex or vertex.

Given that the height of a cone is two times its base diameter. we need to find the formula for the volume of cone in terms of base radius,

So, the volume of a cone in general is = π × radius² × height/3

According to the question,

The height is 2x the base diameter, that mean =

h = 2d

Since, d = 2r

So, h = 2(2r)

h = 4r

So the volume according to this condition is =

π × r² × 4r/3

V = π × 4r³/3

V = 4πr³/3

Hence the volume of the cone according to the given condition is V = 4πr³/3

Learn more about cones, click;

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john has 15 apples. john eats 6 apples.how many apples does john have left.

Answers

Answer:

9

Step-by-step explanation:

Gavin needs to fill the fish tank below with water. The directions state that the water level
should be 2 inches below the top of the tank. Write an expression to show the volume of water
Gavin needs to fill the tank according to the directions.
(2x-6) inches
00
x inches
2x inches

Answers

Answer:

the volume is 300cubic inches

the expression is l x w x (h-2)

100 PTS HELP PLS To the nearest 50 square feet, what is the area of the actual store?

Question 1 options:

2,350 square feet


2,450 square feet


2,500 square feet


2,400 square feet

Answers

Answer:

2,500 square feet is the answer

A cat eats 2/3 of a tin of cat food every day. How many tins of cat food will she eat in 1 week?

Answers

Hi :)

First, how many days are in a week?

7 days are in a weekSo 7x 2/3

First, Convert any mixed numbers to fractions.

Then your initial equation becomes:

2/3×7/1

Applying the fractions formula for multiplication,

=2×7 x 3×1

=14/3

Simplifying 14/3, the answer is

4 and 2/3

Therefor, your answer is 4 2/3

4.66 tin of cat food

WHICH IS THE CORRECT ANSWER? GIVING BRAINLIEST

Answers

Answer:

29.7 cm

Step-by-step explanation:

Since A and B are related by a scale of 3:1 then :

3 × (hypotenuse of A) = (hypotenuse of B)

then

(hypotenuse of A) = (hypotenuse of B)/3

                              = 89/3

                              = 29.7

It takes Kim 7 hours to proof a chapter of Hawkes Learning Systems' Introductory Algebra book and it takes Harding 2 hours. How long would it take them working together? (Round your answer to two decimal places.)

Answers

It would take them 4.5 hrs working together

1
Maurice drove 48 miles north and then 36 miles west. Find the
shortest distance from the point where he ended up to his starting
point.

Answers

Answer: 60 miles

Step-by-step explanation: If you draw it out you get a triangle with side lengths 48 and 36 and you need to find the hypotenuse.

Use pythagorean's theorem a^2+b^2=c^2 or 48^2+36^2=c^2 and you get that the hypotenuse=60

60 miles that’s the answer to the problem

I WILL GIVE 20 POINTS TO THOSE WHO ANSWER THIS QUESTION RIGHT NOOOO SCAMS AND EXPLAIN WHY THAT IS THE ANSWER

Answers

Answer:

x = 6y = 5z = 11.5

Step-by-step explanation:

Reflections of a line or a figure across an axis does not change its lengths.

Therefore, the corresponding parts are equal.

5x = 302y = 102z - 1 = 22

Solving for x

5x = 30Divide each side by 55x/5 = 30/5x = 6

Solving for y

2y = 10Divide each side by 22y/2 = 10/2y = 5

Solving for z

2z - 1 = 22Add 1 to each side2z - 1 + 1 = 22 + 12z = 23Divide each side by 22z/2 = 23/2z = 11.5

What number is 604 less than 6,154?

Answers

Answer:

The answer is 5550

Step-by-step explanation:

Just do

6154- 604=5550

Question 8
The Woodlands Middle School poll results show that about 79.3% of
people who prefer pizza are students and about 81% of the people
who prefer burgers are students.
Which of the following statements is true?
Pizza
There is not enough evidence to
support a relationship between lunch
preference and role at the school.
Students
Teachers
79.3%
20.7%
100%
Burgers
81.0%
19.0%
100%
Total
There is evidence to support a
relationship between lunch preference
and role at the school.

Answers

Answer: There is not enough evidence to support a relationship between lunch preference and role at the school.

Can someone help me please?

Answers

Answer:

Wow that's a lot of questions. The answers are 2, 3/4, 4, 6, 10, 5, 48500, 48000, and 50000

Step-by-step explanation:

Hope this helped

Graph the given function by making a table of coordinates

Answers

X- (-2)(-1)(0)(1)(2) I just did this to separate the numbers by the way
Y- (0.25)(0.5)(1)(2)(4)

Hope this helps:)

find the binomial factor s^2+10s+25

Answers

[tex]s^2+10s+25\\\\=s^2+2\cdot 5 \cdot s +5^2\\\\=(s+5)^2\\\\=(s+5)(s+5)[/tex]

Given the figure below, find the values of x and z.
120°
(9x + 30).

Answers

Answer:

z=60º, x=10º

Step-by-step explanation:

Question 1: 180º - 120º = 60º

Question 2:

(9x+30) = 120º

-30          -30

9x=90º

/9    /9

x=10º

Question 1 of 6
What is the logical conclusion, based upon the information given in the
problem below?
At a recent baseball game, anyone under age 9 was given one free hotdog.
Travis had to pay for the hotdog that he ate. How old must Travis be?
O A. 6 years old
O B. 11 years old
C. 8 years old

Answers

B. 11 years old because 11 is 2 more than 9

Given the 4 points below,
identify what shape is
formed and how you
found your answer.
A(-1,0), B(0, 2), C(4,0), and
D(3,-2)

Answers

basically it's a quadrilateral

hope it really helps..!!

Find an equation of the line that goes through the points (8,-45) and (2,-9). Write your answer in the form y = mx + b.

Answers

Linear Equations

Linear equations are commonly organized in slope-intercept form:

[tex]y=mx+b[/tex]

m = slopeb = the y-intercept (the value of y when x=0)

To find the equation of a line given two points:

Determine the slope of the line using the slope formulaPlug the slope into [tex]y=mx+b[/tex]Determine the y-intercept by solving for bPlug the y-intercept back into the equation

Solving the Question

We're given:

The line passes through the points (8,-45) and (2,-9)

First, determine the slope using the following formula:

[tex]m=\dfrac{y_2-y_1}{x_2-x_1}[/tex] where the given points are [tex](x_1,y_1)[/tex] and [tex](x_2,y_2)[/tex]

⇒ Plug in the given points (8,-45) and (2,-9):

[tex]m=\dfrac{-45-(-9)}{8-2}\\\\m=\dfrac{-45+9}{8-2}\\\\m=\dfrac{-36}{6}\\\\m=-6[/tex]

Therefore, the slope of the line is -6. Plug this into [tex]y=mx+b[/tex] as m:

[tex]y=-6x+b[/tex]

Now, determine the y-intercept:

[tex]y=-6x+b[/tex]

⇒ Plug in one of the given points as (x,y) and solve for b:

[tex]-9=-6(2)+b\\-9=-12+b\\3=b[/tex]

Therefore the y-intercept of the line is 3. Plug this back into [tex]y=-6x+b[/tex]:

[tex]y=-6x+3[/tex]

Answer

[tex]y=-6x+3[/tex]

Which pieces of information may be found on a person's credit report?

Select each correct answer.

past due bills

social security number

marital status

medical history

criminal record

mortgage payment

Answers

Answer:

Past due bills

social security number

mortgage payment

where do the graphs of f(x)=cos(x/2) and g(x)= sqrt2 - cos(x/2) intersect on the interval [0,360)?
(See image below for clear question and answer choices)

Answers

Answer:

  (a)  90°

Step-by-step explanation:

A graph can help you answer the question about where the graphs of the two functions intersect. It shows the one angle of intersection to be 90°.

__

You can also determine this analytically.

  f(x) = g(x)

  cos(x/2) = √2 -cos(x/2)

  2cos(x/2) = √2 . . . . . . . . . . add cos(x/2)

  cos(x/2) = √2/2 . . . . . . . . divide by 2

  x/2 = ±45° +360°×n . . . . . for an integer n

  x = ±90 +720°×n . . . . multiply by 2

  x = 90° is the only solution in the desired range.

A bad contains two red marbles, six blue marbles and seven green marbles. If two marbles are drawn out of the bag, what is the probability, to the nearest thousandth, the both marbles drawn will be red

Answers

Answer:

1/105

Step-by-step explanation:

Total Marbles= 2+6+7=15

2/15 * 1/14 = 2/210 = 1/105

(It becomes 1/14 since you take out own red marble)

Write the answer as a fraction in simplest form?
7 1/2 ÷ 5/6

Answers

Divide 7x2+1 by 5/6 by multiplying 7x2+1 by the reciprocal of 5/6 which would be 6/5, (7x2+1)x6/2x5 cancel o out 2 in both numerator and denominator, 3(1+14)/5 add 1 to 14 to get 15, 3x15/5 multiply 3 and 15 and get 45, divide 45/5 to get 9

Evaluate the following expression
(10 + 2) = 6 + 53

Answers

Answer:12=59

Step-by-step explanation:

Gabe is designing a flashlight that uses a parabolic reflecting mirror and a light source. The shape of the mirror can be modeled by a parabola that opens upward with a diameter of 4 in. and a depth of 1 in. The vertex of the parabola is at the the origin. Where should Gabe place the bulb to ensure a perfect beam of light?
(0,1)
(0,4)
(1,0)
(4,0)

Answers

Answer:

C. (1,0)

Step-by-step explanation:

If we make use of a parabolic reflecting mirror and a light source.

Given thar the equation of parabolic mirror is Y2 = 4ax

The given data in the problem is x = 1 and y = 2

So subject value is y2 = 4ax

4 = 4 a (1)

a = 1

So x = 1

thus focus is at (x, y) = (1,0)

Therefore, option C is correct answer.

write 12/root2 + root18 in the form broot2 where b is an interger

Answers

[tex]\dfrac{12}{\sqrt 2} + \sqrt{18}\\\\\\=\dfrac{12 + \sqrt{18 \times 2}}{\sqrt 2}\\\\\\=\dfrac{12+\sqrt{9 \times 4}}{\sqrt 2}\\\\\\=\dfrac{12+3 \times 2}{\sqrt 2}\\\\\\=\dfrac{18}{\sqrt 2}\\\\\\=\dfrac{18\sqrt 2}{\left(\sqrt 2\right)^2}\\\\\\=\dfrac{18\sqrt 2}2\\\\\\=9\sqrt 2[/tex]

find the missing length​

Answers

Answer:

Step-by-step explanation:

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