1) your favorite recipe for preparing 100 brownies requires the following : 6 eggs , 5 cups flour and 2 sticks of butter . how many eggs would be required to yield 50 brownies ?
1 or 2 or 3 i think it might be 3 .
2) a chemical reaction produces oxygen gas. you collect 6.02 x 1023 oxygen gas molcules at stp. what volume of oxygen gas did you collect
22.4 l or 5.6 l or 11.2 l
3) what volume will 0.75 moles of oxygen gas occupy at stp ?
33.6 l or 16.8 l or 20.0 l i think it might be 16.8 l

answer: the figure is attached herewith.

step-by-step explanation:   we are given to sketch a unit circle and label the terminal points corresponding to

in the attached figure, we have drawn a unit circle, with centre at o(0,0) and radius 1 unit. we have labelled the points a, b, c, d and e corresponding to the angles below

∠aox = 60°,

∠box = 120°,

∠cox = 180°,

∠dox = 240°,

∠eox = 300°.

and the coordinates are a(0.5,1), b(-0.5,1), c(-1,0), d(-0.5,-1) and e(0.5,-1).

thus, the answer is complete.

the density of gold = 19.3 g/cm3

the relation between density and mass and volume is

density = mass / volume

given :

mass of gold = 13 g

density = 13g / volume = 19.3

volume = 13 /19.3 = 0.67 cm^3

thus volume of gold nugget = 0.67 cm^3