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sasho [114]
2 years ago
12

Which model was proposed as a result of Rutherford's scattering experiment where positive particles did not pass straight throug

h a foil as expected?

Chemistry
1 answer:
dimulka [17.4K]2 years ago
6 0

Answer:

the nuclear model of the atom

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The student plans to conduct a spectrophotometric analysis to determine the concentration of Cu2+(aq) in a solution. The solutio
Lelechka [254]

Answer:

The wavelength the student should use is 700 nm.

Explanation:

Attached below you can find the diagram I found for this question elsewhere.

Because the idea is to minimize the interference of the Co⁺²(aq) species, we should <u>choose a wavelength in which its absorbance is minimum</u>.

At 400 nm Co⁺²(aq) shows no absorbance, however neither does Cu⁺²(aq). While at 700 nm Co⁺²(aq) shows no absorbance and Cu⁺²(aq) does.

6 0
3 years ago
A student dissolves some solid NaNO3 in a beaker of water. Which are the solute and the solvent? Choose all answers that are cor
Paul [167]
The correct answer is D. The solute in this solution is the solid sodium nitrate (NaNO3) which is dissolved in the solvent, the water. Solute is the minor component in a solution whereas the solvent is the major component in the solution.
3 0
3 years ago
Draw the condensed structural formula for the ester formed when each of the following reacts with methyl alcohol:
Vikki [24]

Answer:

1) HCOOCH3

2) CH3CH2COOCH3

3) CH3CH2CH2CH(CH3)COOCH3

Explanation:

In the reaction between an alcohol and a carboxylic acid, an ester and water are formed. It is analogous to the inorganic neutralization reaction but this reaction is called esterification in organic chemistry. Esters contain the general formula RCOOR where the RCOO moiety was obtained from the acid and the other R moiety was obtained from the alcohol. The -COOR shows the ester linkage in the molecule. The condensed structural formulas shown in the answer reflects these facts.

6 0
3 years ago
Lithium, beryllium, and boron are elements with atomic number 3, 4, and 5, respectively. Even though they are three of the five
Papessa [141]

Explanation:

These elements are rare because:

<u>Helium fuses into the carbon by the combination of three helium nuclei (Z = 2) and one carbon nucleus (Z = 6), therefore bypassing elements with Z= 3, 4 and 5 which are  lithium, beryllium, and boron respectively. Therefore, the fusion processes in cores of the stars do not form these three elements. </u>

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3 years ago
We would expect warmer Northern Atlantic currents to have all BUT ONE of these consequences on Earth.
Liula [17]

its     C) decreased precipitation

7 0
3 years ago
Read 2 more answers
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