Answer:
potassium chloride reacts with lead nitrate.
Explanation:
According to solubility rule-
(1) All salts containing nitrate ions (
) are soluble.
(2) All salts containing halide ions (
) are soluble except halides of 
.
Hence aqueous solution of potassium chloride (
) reacts with lead nitrate (
) to produce insoluble precipitate of lead chloride (
)
Balanced reaction: 
So potassium chloride reacts with lead nitrate.
Answer:
the second one
Explanation:
becuase i asked my teacher
Fe is the element Iron, the 2+ is how many electrons is lost to make the ion, so 2 electrons are lost from the valence shell (to make a full outermost shell)
Answer:
69.036 g of Compound is required to obtain 48.45 g of Oxygen.
Explanation:
Let us assume that the total mass of the compound is 100 g. So it means that this compound weighing 100 is composed 70.18 % of Oxygen or among 100 g of this compound 70.18 g is constituted by oxygen only. Hence, we can make a relation as that,
70.18 g O is present in = 100 g of a Compound
So,
48.45 g of O will be present in = X g of a Compound
Solving for X,
X = 100 g × 48.45 g ÷ 70.18 g
X = 69.036 g of Compound
Answer: Each isotope has an equal number of protons and electrons.
