All categories

2 years ago

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]2 years ago

8 0

Answer:

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 x^3 y^3 / x^3 y^3

Marysya12 [62]

Answer:

$\frac{1}{y}$

Step-by-step explanation:

When simplifying an exponent a way to do is to expand the exponent. This means that it will now be

$\frac{x*x*x*y*y*y}{x*x*x*y*y}$

Whenever you see an x or y on the numerator and denominator cross it out because it is the same thing as 1

When you cross out all of the x's and y's the only variable left is y in the denominator. This means that the answer is $\frac{1}{y}$

5 0

2 years ago

The relationship between the cost of a corsage and the number of flowers in the corsage is shown in the table below. What is the

Tpy6a [65]

Answer:

lol I don't see the table buh I'll guess G

Step-by-step explanation:

wassup uon rn?

3 0

2 years ago

Which inequality statement best represents the graph below?

lbvjy [14]

Graph A is correct. The ≥ sign is correct because the gray area is above the red. x^2 has a positive coefficient which corresponds to the opening-up parabola.

7 0

2 years ago

Read 2 more answers

Which statement is not correct?

Pachacha [2.7K]

Answer:

b.) because it is over 90*

Step-by-step explanation:

8 0

2 years ago

Can somebody help me? Thanks!

ICE Princess25 [194]

Answer: both our A

Step-by-step explanation:

8 0

2 years ago