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dsp73
3 years ago
12

EV 30 points pls help it’s urgent Thanks :)

Chemistry
1 answer:
Romashka [77]3 years ago
6 0

Answer:

I think it was absorbed

I think when it was set to 4, it went straight through

Explanation:

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Nitrogen is important for _____. plant growth weather and temperature animals to breathe photosynthesis
Thepotemich [5.8K]

Answer:

building amino acids in proteins

Explanation:

7 0
3 years ago
What is the structural formula of 2-methylbutan-2-ol (sometimes called 2-methyl-2-butanol)?
kvasek [131]
Structural formula  is  the   formula  which  shows   the  arrangement  of  atoms   in  the  molecule  of  a   compound
2-methylbutan-2-ol   is  an  alcohol    which  the  functional  group (OH)  is  attached  in  carbon  number  two  and  also  has  methyl group  in  carbon  number  two.
The structural  formula of 2=methylbutan-2-ol is  as  the  attachment  below
  

5 0
3 years ago
At a given temperature, 4.06 atm of H2 and 3.5 atm of Cl2 are mixed and allowed to come to equilibrium. The equilibrium pressure
Llana [10]

<u>Answer:</u> The value of K_p for the given chemical reaction is 0.1415

<u>Explanation:</u>

Equilibrium constant in terms of partial pressure is defined as the ratio of partial pressures of the products and the reactants each raised to the power their stoichiometric ratios. It is expressed as K_p

For a general chemical reaction:

aA+bB\rightarrow cC+dD

The expression for K_p is written as:

K_p=\frac{p_{C}^cp_{D}^d}{p_{A}^ap_{B}^b}

For the given chemical equation:

H_2(g)+Cl_2(g)\rightleftharpoons 2HCl(g)

The expression for K_p for the following equation is:

K_p=\frac{(p_{HCl})^2}{(p_{H_2)}(p_{Cl_2})}

We are given:

p_{HCl}=1.418atm\\p_{H_2}=4.06atm\\p_{Cl_2}=3.5atm

Putting values in above equation, we get:

K_p=\frac{(1.418)^2}{(4.06)\times (3.5)}\\\\K_p=0.1415

The value of K_p for the given chemical reaction is 0.1415

5 0
3 years ago
6.) (5 points) Assume you have a system with a fixed pH of 4.0. It is well buffered and therefore the pH will not change. What i
KIM [24]

Answer:

Dissociated state is the predominant one

Explanation:

When a molecule with pKa of 4.52 is in an aqueous solution at pH = 4.0, follows the H-H equation, thus:

pH = pKa + log₁₀ [A⁻] / [HA]

<em>Where [A⁻] is the dissociated state and [HA] represents the protonated state</em>

Replacing:

4.0 = 5.2 + log₁₀ [A⁻] / [HA]

-1.2 = log₁₀ [A⁻] / [HA]

0.063 =  [A⁻] / [HA]

[HA]  = 16 [A⁻]

That means you have 16 times more [HA] than [A⁻] and the <em>dissociated state is the predominant one</em>

7 0
3 years ago
Which statement about silver (Ag) metal is least reliable?
brilliants [131]
The answer to the question is the first opti.on.A
8 0
3 years ago
Read 2 more answers
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