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3 years ago

Witch organism is primary consumers? O krill O elephant seal O squid O penguins

Chemistry

1 answer:

satela [25.4K]3 years ago

6 0

Answer is A. Krill

hope this will help you

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Which of these is a common feature for the lac and trp operon? A. Regulatory proteins bind to operator B. Regulatory proteins bi

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C. Regulatory proteins bind to repressor

Both produces certain proteins to break down lactose as a food source.

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3 years ago

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1. A 67 kg water-skier is being pulled by a speedboat. The force causes her to accelerate at 3.8

Alborosie

Answer:

254.6N

Explanation:

F=ma

F=67×3.8

F=254.6N

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3 years ago

Identify the limiting reactant when 9.65-g H2SO4 reacts with 6.10-g of NaOH. I need help

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The equation is H2SO4 + 2NaOH = 2H2O + Na2SO4, Also, what is the theoretical yield of Na2SO4 in grams?

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3 years ago

At a certain temperature the equilibrium constant, Kc, equals 0.11 for the reaction:

Butoxors [25]

Answer: The equilibrium concentration of ICl is 0.27 M

Explanation:

We are given:

Initial moles of iodine gas = 0.45 moles

Initial moles of chlorine gas = 0.45 moles

Volume of the flask = 2.0 L

The molarity is calculated by using the equation:

$\text{Molarity}=\frac{\text{Number of moles}}{\text{Volume}}$

Initial concentration of iodine gas = $\frac{0.45}{2}=0.225M$

Initial concentration of chlorine gas = $\frac{0.45}{2}=0.225M$

For the given chemical equation:

$2ICl(g)\rightarrow I_2(g)+Cl_2(g);K_c=0.11$

As, the initial moles of iodine and chlorine are given. So, the reaction will proceed backwards.

The chemical equation becomes:

$I_2(g)+Cl_2(g)\rightarrow 2ICl(g);K_c=\frac{1}{0.11}=9.091$

Initial: 0.225 0.225

At eqllm: 0.225-x 0.225-x 2x

The expression of $K_c$ for above equation follows:

$K_c=\frac{[ICl]^2}{[Cl_2][I_2]}$

Putting values in above equation, we get:

$9.091=\frac{(2x)^2}{(0.225-x)\times (0.225-x)}\\\\x=0.135,0.668$

Neglecting the value of x = 0.668 because equilibrium concentration cannot be greater than the initial concentration

So, equilibrium concentration of ICl = 2x = (2 × 0.135) = 0.27 M

Hence, the equilibrium concentration of ICl is 0.27 M

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3 years ago

Mica peels apart in parallel sheets because the chemical bonds between sheets are weak and the chemical bonds within sheets are

Makovka662 [10]

The answer is supposed to be true

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3 years ago