AgNO3(ag) + NaBr(aq) ----> AgBr(s) + NaNO3(aq)
the ionic equation
Ag+(aq) + NO3-(aq) + Na +(aq) +Br-(aq) -----> AgBr(s) + Na+(aq) + NO3-(aq)
cancel the spectator ions in this case Na+ and No3-
the net ionic equation is therefore =
Ag+(aq) + Br-(aq) ----> AgBr (s)
Answer:
27oz
Explanation:
Let the volume quantity of the 10% solution = x
The volume quantity of the 15% alcohol solution is known as = 18oz
Therefore the volume of the 12% product = 18oz + x
Therefore
0.10 × x + 0.15 × 18oz = 0.12 × (18oz+x)
0.15×18oz - 0.12×18oz = 0.12×x - 0.10×x
.
0.03*18oz = 0.02x
Dividing both sides by 0.02
x = 27oz
Verifying the answer, we have
0.1 × 27 + 18 × 0.15 = 0.12 × 45
2.7 + 2.7 = 5.4
Answer:
Option C is correct : Calcium and magnesium are alkaline earth metals.
Explanation:
From the given option C is correct.
Calcium and magnesium are alkaline earth metals. Both are present in group 2. Each have 2 valence electrons.
All other options are incorrect, because:
a) Chlorine and iodine are alkali metals.
Chlorine and iodine are not alkali metals. These are halogens. Both have seven valence electrons and form salt with alkali metals.
B) Potassium and phosphorus are in the same group.
Potassium and phosphorus are not present in same groups. Potassium is present in group 1 and phosphorus is present in group 15.
d) Boron and silicon are present in same period.
Boron and silicon are not present in same period. Boron is present in period 2 while silicon is present in period 3.
e) Lead and tin both are non metals.
This option is also incorrect because lead and tin both are metals.
Thus, only option C is correct.
Water Solution
Because you are testing the water solutions pH