Answer:
I know the answer, but it is hard to explain
Explanation:
yIt easy u but the single letter in the outside boxes. Then u but the one in the middle box. But the BB in one corner. then but bb on the opposite corner. Then but Bb on the other box.
Answer:
father.....Bb
mother.....bb
offspring, 50%Bb brown eyes ,50%bb blue eyes
b. air pollution
c. fertilizer use
d. none of the above
Meat contamination because humans do not eat air or fertilizer so meat contamination is the only logical answer.
(2) silver (4) thallium
Answer: option (4) thallium.
Explanation:
1) You have to look at the normal boling and mleting points of the elements.
2) To be liquid the normal melting point must be lower than 758 K and the normal boiling point must be greater than 758 K.
3) The look at the data in a handbook of properties or in internet, and build a table.
4) The given temperature, 758K, is 758 - 273.15 = 484.85 °C.
Element Normal melting Normal boiling State at 484.85 °C
point (°C) point (°C)
(1) gold 1064 2700 solid
(2) silver 961.8 2162 solid(3) platinum 1768 3825 solid
(4) thallium 303.5 1457.8 liquidThen, the only element of the choices whose melting point is less than 758 K (484.85) and its boiling point is greater than that, at 1 atm is thallium. So, it is liquid.
a large amount of solvent and a small amount of solute
a large amount of solute and a small amount of solvent
a high density value for the solution