Answer: most metallic Bi > Sb >As >P least metallic
Explanation:
Elements in same column of periodic table increase in metallic characters as you move down the periodic table
Answer:
A,B,E
Explanation:
A) Elements can't be physically separated.
B) Elements are indeed made of only one type of atom
E) Elements cannot be broken down into a simpler form, at least not without a ton of energy being released as an explosion :)
Answer:

Explanation:
Hello!
In this case, according to the given balanced chemical reaction:

We can see there is 1:1 between benzene and chlorobenzene as the relavant product; thus, since the molar mass of benzene is 78.11 g/mol and that of chlorobenzene is 112.55 g/mol, the theoretical yield for this reaction turns out:

Best regards!
Answer:
12 more oxygen
Explanation:
An atom is the smallest particles that can take part in a chemical reaction
The given compounds are:
3Mg₃(PO₄)₂
Number of oxygen atoms = 3[2 x 4] = 24 oxygen atoms
For;
4Al₂O₃;
Number of oxygen atoms = 4 x 3 = 12 oxygen atoms
In 3Mg₃(PO₄)₂ , there are 24 - 12 = 12 more oxygen atoms than in 4Al₂O₃;
Hey man its difference in temperature