When carbon an oxygen combine chemically, the mass of the product is....
2 answers:
Answer:The correct answer is option (2).
Explanation:
According to Law of Conservation of Mass , mass can neither be created nor be destroyed.
In a balanced chemical equation of reaction , the mass of the reactant is always equal to the mass of the products. As we can observe this law in the chemical reaction between carbon and oxygen.
Total mass of reactant = 12 g/mol + 32 g/mol = 44 g/mol
Total mass of products = (12 g/mol + 2 × (16 g/mol)) = 44 g/mol
Since,the law of conservation of mass is justified by the above reaction .Hence ,the correct answer is option (2).
You might be interested in
Answer:
Explanation:
To solve this problem, we need to obtain the number of moles of the solute we desired to prepare;
Number of moles = molarity x volume
Parameters given;
volume of solution = 500mL = 0.5L
molarity of solution = 0.5M
Number of moles = 0.5 x 0.5 = 0.25moles
Now to know the volume stock to take;
Volume of stock =
molarity of stock = 4M
volume = = 0.0625L or 62.5mL