3 years ago

How many moles of oxygen are in 25.45 g of caco3?

1 answer:

3 0

From the periodic table:
mass of oxygen = 16 grams
mass of calcium = 40 grams
mass of carbon = 12 grams
mass of CaCO3 = 40 + 12 + 3(16) = 100 grams
Therefore, each 100 grams of CaCO3 contains 3 moles of oxygen
To know the number of oxygen moles in 25.45 grams, we will simply do cross multiplication as follows:
number of oxygen moles = (25.45 x 3) / 100 = 0.7636

You might be interested in

3. A diamond contains 0.090 moles of carbon What is the mass of the diamond?

Nady [450]

Answer:

1.0809

Explanation:

3 0

3 years ago

A helium balloon with an internal pressure of 1atm and a volume of 4.20 L at 18.0°C is released. What volume will the balloon oc

kari74 [83]

Answer:

7.59 L

Explanation:

- Use combined gas law formula and rearrange.

- Change C to K

- Hope that helped! Please let me know if you need further explanation.

3 0

3 years ago

Write the chemical formula for the anion present in the aqueous solution of cuso4.

ki77a [65]

SO4 -2, or Sulfate

Hope this helps! :)

6 0

3 years ago

Read 2 more answers

Name the fundamental unit involved in the derived unit joule?

tangare [24]

Answer:

Energy

Explanation:

7 0

2 years ago

Please help me to answer this question.<br>i have to submit tomorrow.

ratelena [41]

Answer:

The law of conservation of mass states that mass in an isolated system is neither created nor destroyed by chemical reactions or physical transformations. According to the law of conservation of mass, the mass of the products in a chemical reaction must equal the mass of the reactants.

4 0

3 years ago