Answer:
<h3>The answer is 0.81 g/cm³</h3>Explanation:
The density of a substance can be found by using the formula
From the question
mass of metal = 10.5 g
volume = 13 cm³
We have
We have the final answer as
<h3>0.81 g/cm³</h3>Hope this helps you
2Na + 2H2O → 2NaOH+ H2 How many grams of H2 are produced if 120 g of Na react completely?
1 answer:
You might be interested in
Answer:
So we're trying to find the number of carbon moles in the compound. We know that we have 200g of the compound and that 40% of it is Carbon. and 40% of 200 is 80g (change 40% into a decimal and multiply it by 200 and you get 80g)
So 80g of the compound is carbon. In order to find the moles of Carbon, I have to divide the mass by the molar mass of the element.
We know from our periodic table that the molar mass for carbon is 12g/mol
<u>Therefore we have 6.67 moles of carbon in the compound</u>