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3 years ago

Which interaction occurs when light bounces off of a surface?(2 points)

Chemistry

2 answers:

Alenkasestr [34]3 years ago

8 0

$\underline\mathtt\colorbox{gold}{Reflection}$

Explanation:

Bouncing back of light from a surface is called reflection.

iren2701 [21]3 years ago

7 0

Answer:

Reflection

Explanation:

Very smooth surfaces such as mirrors reflect almost all incident light.

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Identify which of these molecules has the highest boiling point and give the reasoning why in terms of intermolecular force. CHC

PolarNik [594]

Answer:

CH3COOH

Explanation:

CH3COOH has the highest boiling point because it participates in the strongest intermolecular interactions. The -OH group can participate in hydrogen bonding with other -OH groups. Hydrogen bonds are very strong because they are the result of large partial positive charge on the hydrogen and large partial negative charge on the oxygen. When surrounded by other -OH groups, the partial positive charge on the hydrogen can form temporary bonds with the partial negative charge of an oxygen on another molecule. The stronger the intermolecular interactions, the more difficult they are to overcome, thus increasing the boiling point.

The strongest IMF the other molecules participate in are dipole-dipole. These interactions are not as strong as hydrogen bonding.

7 0

2 years ago

A standard solution is prepared for the analysis of fluoxymesterone (C20H29FO3), an anabolic steroid. A stock solution is first

VLD [36.1K]

Answer:

The final solution has a concentration of 5.95 * 10^-6 M

Explanation:

<u>Step 1:</u> data given

Mass of fluoxymesterone : 10mg = 0.01g

Molar mass of fluoxymesterone = 336g/mole

Volume = 500 mL =0.5 L

<u>Step 2:</u> calculate Concentration of fluoxymesterone

Concentration = mole / volume

⇒ To find the concentration, we first need to find the number of moles

⇒moles fluoxymesterone= mass of fluoxymesterone / Molar mass

0.01g / (336g/mole) = 2.976 *10^-5 mole

C = 2.976 *10^-5 mole / 0.5 L = <u>5.95 * 10 ^-5 M</u>

<u>Step 3:</u> Calculate dilution

⇒ If 10 mL is diluted to 100 ml then this is a 10x dilution (100 ml /10 ml = 10) so the final solution will be 10 x more dilute.

⇒5.95 * 10^-5 M /10 = 5.95 ^* 10^-6 M

We can control this through the following formula: M1 * V1 = M2 * V2

5.95 *10^-5 * 10 * 10 *^-3 = M2 *0.1 L

M2 = 5.95 * 10^-6 M

6 0

4 years ago

How many moles are there in 2.3 x 10^23 formula units of NaCl?

Lorico [155]

Answer:

0.38 mol

Explanation:

Given data:

Number of formula units = 2.3×10²³

Number of moles = ?

Solution:

According to Avogadro number ,

1 mole contain 6.022×10²³ formula units.

2.3×10²³ formula units × 1 mol / 6.022×10²³ formula units

0.38 mol

Thus, 2.3×10²³ formula units of NaCl contain 0.38 moles of NaCl.

4 0

3 years ago

How is C10 H16 + 8 Cl2+ 10C + 16 HCL written

Klio2033 [76]

Answer:

10 C-8/5 - 16 e- → 10 C0 (oxidation)

16 Cl0 + 16 e- → 16 Cl-I (reduction)

Explanation:

5 0

3 years ago

Why are the oxidation and reduction half-reactions separated in an<br> electrochemical cell?

Aleksandr [31]

Answer:

<h2>It makes the current viable enough to pass through an exterior wire.</h2>

Explanation:

Electrochemical cells primarily comprise of two half-cells. These half-cells assist in isolating the oxidation and reduction half-reactions. These two reactions are linked by a wire which allows the current to move from one edge to the other. The oxidation at the anode and the reduction take place at the cathode and the addition of a salt bridge helps in completing the circuit and permits the current to flow and leads to the generation of electricity.

7 0

3 years ago