Answer:
i dont understand ... whats the question?
Explanation:
Answer:
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Explanation:
what i know:) hope it helps
The answer to your question is A
243 grams of zinc oxide would be produced by the thermal decomposition of 375 grams of zinc carbonate.
<h3>What is Thermal Decomposition?</h3>
Heat causes one component to break down into two or more other substances in a process known as thermal decomposition. The heat is used to dissociate the bonds that held the original molecules' atoms together, hence the reaction often uses up more heat energy than it produces.
According to the periodic table:
zinc molar mass is 65.38 grams
12 gm is the molar mass of carbon
oxygen molar mass is 16 grams
ZnCO3 molar mass is 65.38 + 12.3 + 16.4 = 125.38 gm.
ZnO has a molar mass of 65.38 + 16 = 81.38 grams.
Therefore, the mass of ZnO in 375 gm is equal to (375 x 81.38) / 125.38, or 243.4 gm.
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Answer:
368.3 g
Explanation:
Given data:
mass of chlorine= 0.568 Kg
sodium chloride= 936 g
mass of sodium= ?
To solve this problem first of all we will write the chemical equation:
Na + Cl2 → NaCl
Balanced chemical equation:
2Na + Cl2 → 2NaCl
Formula:
number of moles = mass/ molar mass
first of all we will calculate the moles of sodium chloride,
number of moles = 936 g/ 58.44 g/mol
number of moles = 16.061 mol
The number of moles of sodium required in this reaction is equal to the number of moles of NaCl produced, which can be seen in balance chemical equation.
Now we will compare the moles of sodium chloride and sodium
NaCl : Na
1 : 1
2 : 2
16.016 : 16.016
Now we will calculate the mass of sodium from moles
number of moles = mass / molar mass
number of moles × molar mass = mass
16.016 mol × 23 g/mol = mass
mass= 368.3 g