Answer:
Odds to be given for an event that either Romance or Downhill wins is 11:4
Explanation:
Given an odd, r = a : b. The probability of the odd, r can be determined by;
Pr(r) = 
÷ (
So that;
Odd that Romance will win = 2:3
Pr(R) = 
÷ (
= ÷ 
= 
Odd that Downhill will win = 1:2
Pr(D) = 
÷ (
= ÷ 
= 
The probability that either Romance or Downhill will win is;
Pr(R) + Pr(D) = +
= 
The probability that neither Romance nor Downhill will win is;
Pr(neither R nor D) = (1 - )
= 
The odds to be given for an event that either Romance or Downhill wins can be determined by;
= Pr(Pr(R) + Pr(D)) ÷ Pr(neither R nor D)
= ÷
= 
Therefore, odds to be given for an event that either Romance or Downhill wins is 11:4
It is a universal constant used for all gases
2..............................................
Answer:
.
Explanation:
Lithium is in the first column of the periodic table, so it will have 1 valence electron.
Bromine is in the seventh column of the periodic table, so it will have seven valence electrons.
They must combine in a way to reach 8.
When combining elements to form compounds, the "crisscross method" is used. Above Li would be a charge of +1, and above Br would be a charge of -1.
Cross the 1 from the top of Li to the bottom of Br, and so there is 1 Br.
Cross the 1 from the top of Br to the bottom of Li, and so there is 1 Li.
It is not written BrLi because chemists decided to order them the other way. Technically speaking, it isn't wrong, but the positive charge is normally put on the left and the negative charge is normally put on the right.
Answer:
Moving Across a Period
Moving from left to right across a period, the atomic radius decreases. The nucleus of the atom gains protons moving from left to right, increasing the positive charge of the nucleus and increasing the attractive force of the nucleus upon the electrons
