Answer:
The answer is 1.66
1 mole is equal to 6.0221415E+23 atom. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between
Answer:a) 11.34 g of ethane can be formed
b) is the limiting reagent
c) 3.44 g of the excess reagent remains after the reaction is complete
Explanation:
To calculate the moles :
1.
2.
According to stoichiometry :
1 mole of require 1 mole of
Thus 0.378 moles of will require= of
Thus is the limiting reagent as it limits the formation of product and is the excess reagent.
moles of left = (2.10-0.378) = 1.72 moles
mass of left=
According to stoichiometry :
As 1 mole of give = 1 mole of
Thus 0.378 moles of give = of
Mass of
Thus 11.34 g of ethane is formed.
Answer:
50 formula units of NBr3 will yield 75 formula units of NaBr
57 formula units of NaOH will yield 57 formula units of NaBr
Explanation:
The equation of the reaction is ;
2NBr3 + 3NaOH – N2 + 3NaBr + 3HBrO
Number of formula units of NaBr formed when 50NBr3 reacts was obtained from;
2 formula units of NBr3 yields 3 formula units of NaBr
50 formula units of NBr3 will yield 50 ×3/2 = 75 formula units of NaBr
Hence 50 formula units of NBr3 will yield 75 formula units of NaBr
Then;
Since 3 formula units of NaOH yields 3 formula units of NaBr
57 formula units of NaOH will yied 57×3/3 = 57 formula units of NaBr
Hence 57 formula units of NaOH will yield 57 formula units of NaBr
T's harder to find one of the many genes involved in a polygenic trait vs. the only gene involved in a discrete trait."
<span>It is probably not very difficult to find ONE OF THE GENES involved in a polygenic trait (as this answer suggests), but it IS difficult to find ALL OF THE GENES involved in the trait. </span>
<span>This sounds like a high school Biology or first year university question - chances are they're testing your reading comprehension as much as your scientific knowledge.</span>
Answer:
We have day and night because the Earth rotates. It spins on its axis, which is an imaginary line passing through the North and South Poles. The Earth spins slowly all the time, but we don't feel any movement because it turns smoothly and at the same speed.