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Stells [14]
3 years ago
14

Sarah performs an experiment to see whether bees prefer red flowers or yellow flowers. Look at this table of results from the ex

periment.
What is the independent variable in this investigation?
A. time
B. color of flower
C. total number of bees
D. number of bees at each flower
Chemistry
1 answer:
denis-greek [22]3 years ago
5 0
I thinkkkkk it is B I’m not sure
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A vessel of volume 22.4 dm3 contains 2.0 mol h2 and 1.0 mol n2 at 273.15 k initially. all the h2 reacted with sufficient n2 to f
yanalaym [24]
Volume = 22.4 dm3
n = 2 mol of H2
n = 1 mol of N2
Temperature = 273.15
All H2 reacts
reaction
N2 + 3H2 = 2NH3
1:3 ratio
Calculation:
N2 initial - N2 reacted = Final N2
1 - 2*(1/3) = 0.3333 mol of N2 left
H2 = 0 left
NH3 formed = 2/3*1 = 2/3 = 0.666
Total mol:
0.3333 + 0.666 = 1 mol
Apply the equation : 
PV = nRT
P = nRT/V = 1*0.0082*(273.15)/(22.4) = 0.0999924 atm
PH2 = 0
PN2 = 1/3*0.0999924 = 0.0333308 atm
PNH3 = 2/3*0.0999924 = 0.0666616 atm
Answer is 0.0666616 atm
7 0
3 years ago
The table compares the number of electrons in two unknown neutral atoms.
Andrej [43]

Answer:

Both are highly reactive.

Explanation:

A has 1 valence electron D has 3

A is sodium D is aluminum

5 0
3 years ago
Read 2 more answers
What reaction type is N2 + O2 ---> 2 NO
zmey [24]

Answer:

decomposition: the reactant is breaking down into its constituent elements.

(hope this helps)!

Explanation:

8 0
2 years ago
Which electronic configuration matches the model?
antiseptic1488 [7]

Answer:

option 2 is correct answer. its nitrogen.

7 0
3 years ago
What is the length in inches (in) of a 100-meter soccer field?
max2010maxim [7]

Answer:

3937 inches

Explanation:

1m = 39.37 inches.

However, we want to know how long a 100m soccer field is, so we have to times the value for 1m by 100.

Therefore, an 100m soccer field = 100 x 39.37 = 3937 inches

7 0
3 years ago
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