Which of the following is not a name of a valid chemical formula? Select one:
a. carbon chloride
b. nitrogen monoxide
c. copper (II) carbonate
d. chloric acid

Answers

Answer 1

Answer: Among the compounds given, the one that is not valid is a. carbon chloride. a compound composed of non-metals should have prefixes that is related to the number of atoms of the elements present. In this case, the other cmopounds are considered valid but not A

Answer 2

Answer: The correct answer is: Option (a) Carbon Chloride

Explanation:
Carbon has four valence electrons; therefore, it would require 4 more electrons to become stable. Chlorine, however, has seven (7) valence electrons. So it would require only one electron to become stable. In this case, as in the name, carbon chloride, the word chloride refers to the compound that is stable, which in this case cannot be possible (as carbon requires 4 electrons, and chlorine only has 7). If chlorine had 4 valence electrons, then it would be possible. Hence, the correct option is (a) Carbon Chloride.

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Answers

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The volume of a rectangular prism is represented by the function x3 + 9x2 + 6x - 16. The length of the box is x + 2 while the height is x + 8. Find the expression representing the width of the box. (2 points) . Answer: A. x - 4 B. x - 1 C. x + 1 D. x + 4

Answers

easy
V=LWH
V=x³+9x²+6x-16
L=x+2
H=x+8
W=?
so
x³+9x²+6x-16=(x+2)(?)(x+8)
x³+9x²+6x-16=(x+2)(x+8)(?)
x³+9x²+6x-16=(x²+10x+16)(?)
divide both sides by (x²+10x+16) or guess what ? is
(x-1)=?

width=x-1

B is answer

or you could have trial and erroed it, since you know they multiply to get the volume

Your answer is either B or x - 4.

Can someone please explain why this is wrong?

Answers

Answer:

Can you show me? Or tell me what might be wrong?

Step-by-step explanation:

Irina predicted that she would sell 75 books, but she actually sold 95 books. Which expression would find the percent error? Use the table below to help answer the question.

Answers

There is no image of the table given.

Given:
approximate number = 75
exact number = 95

error = |approximate number - exact number| ÷ exact number
error = |(75-95)| / 95 = |20| / 95 = 0.21

percentage of error = 0.21 x 100% = 21%

Answer:

Given:

approximate number = 75

exact number = 95

error = |approximate number - exact number| ÷ exact number

error = |(75-95)| / 95 = |20| / 95 = 0.21

percentage of error = 0.21 x 100% = 21%

I NEED HELP FAST. DUE TOMORROW

Answers

so it asks you to use the quadratic formula which is when you have ax^2+bx+c=0 then you put it into the quadratic formula which is x=((-b+-√(b^2-4ac))/(2a))

so 8x^2+3x=-7
add 7 to both sides
8x^2+3x+7=0

put into the quadratic formula
8x^2+3x+7=0
ax^2+bx+c=0
x=((-b+-√(b^2-4ac))/(2a))
x=((-3+-√(3^2-4(8)(7)))/(2(8)))
solve inside of square root first
3^2-4(8)(7)=pemdas 9-4(8)(7)=9-224=-215

so -3+-√-215
we know that square root of negative is not real and is immaginary so i must be involved
√-1=i so
-215=i√215
so the answer is A

CONTINUATION
i√215=i(15)=15i
-3+-15i means -3+ or minus 15i
then solve for botom part
2(8)=16
(-3+-15i)/16
so the answers are (-3+15i)/16 and (-3-15i)/16

Does anybody mind helping me with 3-6?