The correct option is 2.
For a chemical equation to be balanced, the number of atoms of each element present in the reactants must be the same with that present in the products. If the number of atom of any element at any of the two side of the reaction is not the same, then the equation is not balanced. Looking at the options given above, it will be noticed that for option 2, the number of Sr atom at the reactant side is 1 while at the product side it is 2. This shows that the equation is not balanced.
3, 9, 16 are correct! 17 should be b because buffered means that it resists change in pH
Answer:
B. 1.000 × 10-4 kg
Explanation:
A. 1.000 × 10-8 Mg = 0.00000001 Mg = 0.1 mg
B. 0.0001 kg = 0.1 g
C. 1000 ug = 1 mg
D. 1
.000 × 10-2 cg = 0.01 cg = 0.1 mg
A = D
B > C > A = D
Answer:
in a chemical equation if the bond is ionic its the first part that is positive and the second half of the equation is negative
Explanation:
Mass is the physical property of matter can be expressed numerically in SI units.
