Answer:
- <em><u>% of calcium carbonate = 28.8%</u></em>
Explanation:
The <em>percentage </em>of a substance in a mixture is calculated with the formula:
- % of substance = (mass of substance / mass of mixture) × 100
In this case we have:
- mass of substance = mass of <em>calcium carbonate</em> = 1.73 g
- mass of<em> mixture</em> = mass of <em>calcium carbonate</em> + mass of <em>sodium carbonate</em> + mass of <em>magnesium sulfate</em>
- mass of <em>mixture</em> = 1.73 g + 2.34 g + 1.93 g = 6.00 g
Now you can substitute the values in the formula for percentage:
- % of substance = (1.73g / 6.00g) × 100 = 28.8%
The answer is group 1A.
In the ionic compound formula X₂SO₄, SO₄ has a -2 charge. Hence to balance this -2 charge of SO₄, X must have a +1 charge.
Group 1A elements form X⁺ type of ions because they are metals. So, they have the tendency to lose electrons.
Hence, X must belong to the 1A group.
Ionic Compounds-
- Ionic compounds are formed by the electrostatic attraction between the anions and the cations.
- Cations are positively charged ions that are formed due to the loss of electrons.
- And the anions are negatively charged ions that are formed due to the gain of electrons.
- Due to this, they have opposite charges and form bonds known as Ionic Bond.
To learn more about Ionic compounds, visit: brainly.com/question/9167977
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Protons, it was once organized by atomic mass but organizing by protons turned out to be better
Answer:
2
Explanation:
C⁴H¹⁰ + 2O² —> 4CH²O + H²