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3 years ago

Think critically explain how biotic change in an ecosystem that has flooded?

Chemistry

1 answer:

Scorpion4ik [409]3 years ago

8 0

Answer:

Organisms that do not live in water would either have to adapt, or they would die. Other water organisms might move into the ecosystem. Diseases that are waterborne might make a surge.

Explanation:

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Select the true statement. ANSWER Unselected Anions are smaller than their neutral parent atoms because there are fewer electron

Olenka [21]

Answer:

Explanation:

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3 years ago

Balance the following chemical reaction:

mrs_skeptik [129]

Answer:

what the freak is thisnenejehey

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What is the coefficient in this chemical formula? 3C6H12O6

erma4kov [3.2K]

Answer:

C-3

Explanation:

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At 150°C the decomposition of acetaldehyde CH3CHO to methane is a first order reaction. If the

Crank

The decomposition time : 7.69 min ≈ 7.7 min

<h3>Further explanation</h3>

Given

rate constant : 0.029/min

a concentration of 0.050 mol L to a concentration of 0.040 mol L

Required

the decomposition time

Solution

The reaction rate (v) shows the change in the concentration of the substance (changes in addition to concentrations for reaction products or changes in concentration reduction for reactants) per unit time

For first-order reaction :

[A]=[Ao]e^(-kt)

ln[A]=-kt+ln(A0)

Input the value :

ln(0.040)=-(0.029)t+ln(0.050)

-3.219 = -0.029t -2.996

-0.223 =-0.029t

t=7.69 minutes

4 0

3 years ago

Boron (B) has two isotopes, boron-10 and boron-11. The atomic weight of boron is ?

suter [353]

Answer:

Approximately 10,5

Explanation:

The question is not really very specific, because it would need the percentages of those isotopes in the nature. As they are not shown, it should be the median of those two numbers.

atomic weight ≈ $\frac{10+11}{2}$ = 10,5

If you check a periodic table, you'll see it's actually 10,8, but that's because of the thing I told you at first (percentages missing).

Hope I could help.

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3 years ago