Answer: B2 + 3W2 ---> 2BW3
Explanation:
You have 2 B on the right and 1 B on the left to balance out B, you need to add 2 wich gives you 6 W on the left and 2 W on the right. To baance W on both sides you add a 3 to the W on the right which gives you 6 W on both sides.
The answer is A. How does the cuddle fish change its colors ?
Answer:
200x
Explanation:
<em>The total magnification of a microscope depends on the power of the eyepiece and that of the objective lens. It is obtained by multiplying the two factors together. </em>
The total magnification of a microscope can be mathematically expressed as:
Total Magnification = <em>ocular/eyepiece magnification x objective magnification</em>
In the illustration, eyepiece magnification = 10 and objective magnification = 20. Hence,
Total Magnification = 10 x 20 = 200x
Answer:
The answer to your question is: 83.9 %
Explanation:
Data
Cu = 31.8 g
S = 50 g
CuS = 40 g
yield = ?
Equation
Cu + S ⇒ CuS
MW Cu = 64 g
MW S = 32 g
MW CuS = 96 g
Ratio (theoretical/experimental)
Experimental 50/31.8 = 1.57
Theoretical 32/64 = 0.5 limiting reactant Cu
64 g of Cu ------------------ 96 g of CuS
31.8 g ------------------- x
x = (31.8 x 96) / 64
x = 47.7 g of CuS
% yield = (40/47.7) x 100
= 83.9 %