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aivan3 [116]
3 years ago
9

Which indicator would tell scientists the most about future climate change

Chemistry
1 answer:
lara [203]3 years ago
6 0
The data gotten from ice cores could scientists tell the about future climate change.
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Use beer\'s law to find the concentration of a solution of tpcp in methanol solution if a 1 cm cuvette of the solution has an ab
Alenkasestr [34]
According to Beer-<span>Lambert law the absorption of light by a solution is directly proportional to the concentration of that solution.
Mathmatically,
                                    A  =  </span>∈ C l          ------- (1)
Where,
                                    A  =  Absorption = 1.23
                                    ∈  =  molar absorptivity coefficient =  6460 M⁻¹cm⁻¹<span>
                                    C  =  Concentration = ?
                                    l    =  Path Length = 1 cm
Solving eq.1 for concentration,
                         
                                    C  =  A / </span>∈ l
Putting values,
                                    C  =  1.23 / (6460 M⁻¹cm⁻¹ × 1 cm)

                                    C  =  0.00019 mol/L
7 0
3 years ago
1-bromobutane undergoes dehydrohalogenation by an elimination reaction when heated in the presence of base. what is the identity
Len [333]

Answer:

1-butene

Explanation:

In this case, the problem is already stating and saying the reaction involved here.

1-bromobutane undergoes a dehydrohalogenation in presence of a base. This will cause an elimination reaction forming a product.

As this is an elimination product, this can be done in two ways.

The first way is with an unimolecular reaction where the halide is eliminated from the starting reactant in a two step reaction involving a carbocation formation. This is known as E1 reaction. However, the conditions for this reaction is to be in acid medium.

The second way is with a bimolecular reaction where the halide is eliminated from the starting reactant in just one step, and no carbocation is formed. This is known as E2 reaction and is commonly used with bases.

In the case of this problem, we are undergoing an E2 reaction, therefore, the mechanism of reaction is just one step, and when this happens, the base substract the hydrogen from Carbon 2, eliminates the bromide and forms a double bond, giving the 1-butene.

You can see the mechanism in the following picture.

Hope this helps

3 0
3 years ago
Is salt a pure substancetance
Slav-nsk [51]
Yes it is a pure substance
7 0
3 years ago
Read 2 more answers
Why are prefixes not used in naming ionic compounds?
dimaraw [331]

Answer:

Since we can't utilize charges to make sense of what number of every particle we have (as we did with ionic mixes), we need to determine with prefixes mono-, di-, tri-, tetra, penta-, hexa-,, etc.

3 0
3 years ago
If an object has a mass of 250 grams and a volume of 5 milliliters, what is the density of the object?
ycow [4]

Answer:

<h2>50 g/mL</h2>

Explanation:

The density of a substance can be found by using the formula

density =  \frac{mass}{volume} \\

From the question we have

density =  \frac{250}{5}  \\

We have the final answer as

<h3>50 g/mL</h3>

Hope this helps you

4 0
3 years ago
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