According to the law of conservation of mass, the quantity of the elements, involved in chemical reactions does not change. For example,
H2O2 - > H2O + O2
is wrong, because there are two O atoms on the first side of the equation, and three on the other. To correct it, coefficients must be added, until the amount of both H and O atoms is equal on both sides.
2H2O2 - > 2H2O + O2
Block and tackle d is the best answer
<span>Add 3 x 10^9 +5.3 x 10^10
</span><span> 3 x 10^9
+5.3 x 10^10
</span>------------------
5.6 x 10^10
Answer:
Mass = 96 g
Explanation:
Given data:
Number of moles of C = 8 mol
Mass of C in gram = ?
Solution:
Formula:
Number of moles = mass/molar mass
Molar mass of C = 12 g/mol
8 mol = mass / 12 g/mol
Mass = 8 mol × 12 g/mol
Mass = 96 g
Answer:
C
H²O is dissociated in water into H³O+ (hydronium ions) and OH- (hydroxide) given by;
2H²O <-----> H³O+ + OH-
If you notice initially we have 4 hydrogen atoms and 2 oxygen atoms. And similarly after the reaction we have 4 hydrogen atoms and 2 oxygen atoms.
Ratio of H to O is 4:2
or 2:1
This is very intuitive as we have 2 hydrogen atoms and 1 oxygen atom in a water molecule.
