Select the correct answer.
which of these outcomes is conclusive evidence that mixing sugar in water is a physical change?
a.
there is no change in color.
b.
there is no precipitate formed.
c.
there is no gas given off.
od.
there is no molecular change
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A is the correct answer

Step-by-step explanation:

A is the correct answer

Because as you can see, when mixing sugar in water no color is change but you can feel the sweet of the water. Hope my explanation if right :(

Hope this can help you :3

let x and 400 - x be the two numbers.  

==> 0.80x + 0.85(400 - x) = 400 - 68 from the statement of the problem.  

< ==> 0.80x + 0.85(400 - x) = 400 - 68  

==> 340 - 0.05x = 332  

< ==> -0.05x = -8 ==> x = 160, the first number ==> 400 - x = 240, the second number.