Answer:
there are three significant digits.
Explanation:
Thus, 21.8, 0.283 and 567 all have three significant digits. 2. Zeros appearing between non-zero digits are significant. Thus, 505 and 0.206 have three significant digits, while 50,005 has five significant digits. (from google)
Due to it's electronic configuration w/c is 1s2 2s2 2ps 3s1 considering the last w/c is 3s1, sodium should be in row 3 period a1.
Answer:
The answer to your question is: D. Fractional distillation
Explanation:
A. Column chromatography this method is use to separate mixtures base in its capacity to be absorbed.
B. Fractional crystallization this method use the solubility of solutes in a solvent.
C. Simple distillation is a method to separate 2 liquids based on the difference in their boiling points.
D. Fractional distillation is a method used to separate a mixture of liquids which have their boiling points very close.
E. Paper chromatography is a method to separate a mixture based on their different rate of migration on a paper.
Answer:
I Think It's The Second One
Tell Me If I'm Wrong
Answer:
Bronsted lowry base = Proton acceptor = H2O
Bronsted lowry acid = Proton donor = HF-
Explanation:
The equation is given as;
HF-(aq) + H2O(l) --> F-(aq) + H3O(aq)
A bronsted lowry base is any specie that can accept hydrogen ion (proton) from another molecule.
Basically a bronsted lowry base is a proton acceptor while a bronsted lowry acid is a proton donor.
In the reaction above, upon comparing both the reactants and products;
Bronsted lowry base = Proton acceptor = H2O
Bronsted lowry acid = Proton donor = HF-
