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navik [9.2K]
3 years ago
8

Organisms do not adapt as a result of competition for resources. Please select the best answer from the choices provided T F

Chemistry
2 answers:
Ymorist [56]3 years ago
6 0
The answer is FALSE.
Hope this helps.
zhenek [66]3 years ago
6 0

Organisms do not adapt as a result of competition for resources. Please select the best answer from the choices provided T OR F its FALSE

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I PLEASE HELP! How many liters of a 2.25 molar hydrobromic acid (HBr) solution would be needed to react completely with 100.0 gr
PtichkaEL [24]
Moles of calcium metal used = 100/40.1=2.5
Moles of HBr need to react = 5 moles 
As the molar ratio is 1 is to 2 among them 
so
Moles=molarity x volume
5=2.25 x volume
volume=2.22 litres of HBr required for this reaction
ANSWER IS 2.22 LITRES
8 0
2 years ago
What is the concentration of an hbr solution if 12.0 ml of the solution is neutralized by 15.0 ml of a 0.25 m koh solution?
Snowcat [4.5K]
The balanced equation for the reaction between KOH and HBr is as follows;
KOH + HBr --> KBr + H₂O
stoichiometry of KOH to HBr is 1:1
number of KOH moles reacted - 0.25 mol/L x 0.015 L = 0.00375 mol
according to molar ration 
number of KOH moles reacted = number of HBr moles reacted 
number of HBr moles reacted - 0.00375 mol 
if 12 mL of HBr contains - 0.00375 mol 
then 1000 mL of HBr contains - 0.00375 mol / 12 mL x 1000 mL = 0.313 mol
therefore molarity of HBr is 0.313 M
4 0
3 years ago
What is the value of the equilibrium constant for this redox reaction?
aivan3 [116]
Correct  answer: Option D, <span>K = 5.04 × 10^52
</span>
Reason:
We know that, 
Ecell = \frac{0.0592}{n}log(K),
where n = number of electrons = 2 (in present case)
K = equilibrium constant.

Also, Ecell = <span>+1.56 v

Therefore, 1.56 = </span>\frac{0.0592}{2}log(K)
Therefore, log (K) = 52.703
Therefore,  K = 5.04 X 10^52


8 0
3 years ago
Read 2 more answers
Why does ice float?
Misha Larkins [42]
D water expands when it freezes

4 0
3 years ago
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In a game of tug of war, team one pulls to the right with a force of 500 newtons and team two pulls to the left with a force of
SOVA2 [1]

Answer:

100 n to the right

Explanation:

6 0
2 years ago
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