1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
USPshnik [31]
3 years ago
15

A compound contains 40% calcium, 12% carbon, and 48% oxygen by mass. What is the empirical formula of this compound?

Mathematics
1 answer:
astraxan [27]3 years ago
8 0

Answer:

3

Step-by-step explanation:

Explanation:

Although you have not been provided with direct masses, you can use the percentage composition values in place of masses.

First, calculate the number of moles of each element:

This is the formula for the ionic compound calcium carbonate, confirming that our result is indeed in the magnitude of a plausible answer. In fact, given the fact that calcium carbonate is ionic, it is also true that this empirical formula equates to the unit formula of the compound.

You might be interested in
Simplify to create an equivalent expression.<br><br> 3n+2(-2n-1)
nikitadnepr [17]

3n - 4n - 2

-n - 2

-n - 2 is the simplest form

3 0
3 years ago
Code<br><br> fg2p3e2<br><br> Only from ages to 12 up to 16
zzz [600]

Answer:

i like your picture

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
Write an equation that is proportional.
maksim [4K]

Answer:Learn how to write a proportional equation y=kx where k is the so-called "constant of proportionality".

Step-by-step explanation:

https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-ratio-proportion/cc-7th-equations-of-proportional-relationships/v/equations-of-proportional-relationships#:~:text=Learn%20how%20to%20write%20a,called%20%22constant%20of%20proportionality%22.

5 0
3 years ago
What should you do to both sides of the inequality in order to solve x + (-2) &gt; 3?
lilavasa [31]

x+(-2) >3

open the bracket

x-2>3

collect the like terms by taking 2 to the other side

x>3+2

x>6

3 0
2 years ago
a cone shaped container has a height of 9 inches and a diameter or 2in it is filled with a liquid that is worth $2 per cubic inc
Mice21 [21]

Answer:

$18.84

Step-by-step explanation:

The area of a cone is (1/3)pi*r^2*h

With all variables plugged in we get an area of (1/3)*3.14*(1^2)*9, or 9.42 cubic inches. With a value of 2$/in^3, we get 2*9.42, or 18.84.

Therefore, the value of the container is $18.84.

5 0
2 years ago
Other questions:
  • Sin4x-sin8x using a sum to product to rewrite the expression
    14·2 answers
  • Corresponding angles in a similar figure are congruent true or false?
    11·2 answers
  • How do you do this maths I need help please
    6·1 answer
  • Number 18 i need help
    8·2 answers
  • while in Tokyo, Callie spent 547,000 Japanese yen for a strand of pearls. The cost of the pearls was equivalent to $5,000 in U.S
    10·1 answer
  • - 5x = -x - 48<br> x = -11<br> X = 12
    13·1 answer
  • Evaluate: show your work
    12·2 answers
  • Please help quickly! in a test!
    7·2 answers
  • Use the rational zero Theorem to create a list of all possible rational zeros of the function
    13·1 answer
  • What place is the 6 at in the number 69,734
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!