Answer:
i think it's B sorry if i'm wrong
Answer:
27) Double replacement
28) 2NaOH + H2SO4 --> Na2SO4 + 2H2O
Answer: Volume = 0.01L
Explanation:
The density of a substance is given by; Density = Mass / Volume.
In this question, Mass = 1000g, Volume = ? and Density = 100 Kg/L
For the units to be uniform, we convert 1000g to Kg = 1Kg
Therefore, Volume = Mass / Density = 1Kg / 100Kg/L = 0.01L
Na is cation so it loses electron to be positive and become stable losing one valence shells one electron so it's oxidation number is +1 ie A is correct
Answer:
The first row of elements fits in period <u>6</u>, after the element <u>lanthanum (La)</u>. The second row of elements fits in period <u>7</u>, after the element <u>actinium (Ac). </u>
I hope this helps!