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cricket20 [7]
3 years ago
15

If an object that stands 3 centimeters high is placed 12 centimeters in front of a plane mirror, how far from the mirror is the

image located? Explain your reasoning.
Chemistry
1 answer:
ryzh [129]3 years ago
7 0

Answer:

the mirror is 12 cm away from the image

Explanation:

; the image will be virtual and it will form at 12 cm distance behind the mirror.

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A sample of oxygen gas at a pressure of 1.14 atm and a temperature of 21.5 degrees Celsius, occupies a volume of 815 ml. If the
maria [59]

Answer:

The volume of the gas will be 573.52 mL.

Explanation:

Boyle’s law states that <u>the  pressure of a fixed amount of gas at a constant temperature is inversely proportional  to the volume of the gas</u>.

The equation for Boyle's law is:

P₁V₁ = P₂V₂

We want to know V₂, that is, the volume of the container after the compression. We rearrange the equation and calculate:

V₂ = P₁V₁ ÷ P₂

V₂ = 1.14 atm × 815 mL ÷ 1.62 atm = 573.52 mL

7 0
4 years ago
The difference between the calculated voltage (based on standard potentials) and the actual voltage required to cause electrolys
Mrrafil [7]

The difference between the calculated voltage (based on standard potentials) and the actual voltage required to cause electrolysis is called overvoltage.

<h3>Electrolysis </h3>

Electrolysis is the technique of causing a chemical change in a substance by passing an electric current through it. The substance either loses or gets an electron during the chemical transition (oxidation or reduction). The procedure is carried out in an electrolytic cell, a device made up of positive and negative electrodes that are kept apart and submerged in a solution with ions that are both positively and negatively charged. The chemical that needs to be converted might either be dissolved in the solution or could form the electrode. The negatively charged electrode (cathode) receives electrical current (i.e., electrons), which travels there and combines with the components of the solution to convert them (reduced).

Learn more about electrolysis here:

brainly.com/question/12054569

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5 0
2 years ago
What type of rock is a obsidian , marble, and a conglomentary rock
laiz [17]

Hi There!

Obsidian - Igneous Rock

Marble - Metamorphic Rock

Conglomentary - Sedimentary Rock

Hope This Helps :)

6 0
4 years ago
Read 2 more answers
What are the genotypes and phenotypes of the offspring in this image?
soldier1979 [14.2K]

Answer:

Genotypes: Hh, Hh, hh, and hh

Phenotypes: Short Hair, Short Hair, Long Hair, Long Hair

Have a nice day! ^-^

6 0
3 years ago
Read 2 more answers
A cell was prepared by dipping a Cu wire and a saturated calomel electrode into 0.10 M CuSO4 solution. The Cu wire was attached
Rashid [163]

Answer:

(a)  Cu²⁺ +2e⁻ ⇌ Cu

(c) 0.07 V  

Explanation:

(a) Cu half-reaction

Cu²⁺ + 2e⁻ ⇌ Cu

(c) Cell voltage

The standard reduction potentials for the half-reactions are+

                                             <u> E°/V </u>

Cu²⁺ + 2e⁻ ⇌ Cu;                  0.34  

Hg₂Cl₂ + 2e⁻ ⇌ 2Hg + 2Cl⁻; 0.241

The equation for the cell reaction is

                                                                            E°/V

Cu²⁺(0.1 mol·L⁻¹) + 2e⁻ ⇌ Cu;                               0.34  

<u>2Hg + 2Cl⁻ ⇌ Hg₂Cl₂ + 2e⁻;                             </u> <u>-0.241 </u>

Cu²⁺(0.1 mol·L⁻¹) + 2Hg + 2Cl⁻ ⇌ Cu + Hg₂Cl₂;   0.10

The concentration is not 1 mol·L⁻¹, so we must use the Nernst equation

(ii) Calculations:  

T = 25 + 273.15 = 298.15 K

Q = \dfrac{\text{[Cl}^{-}]^{2}}{ \text{[Cu}^{2+}]} = \dfrac{1}{0.1} = 10\\\\E = 0.10 - \left (\dfrac{8.314 \times 298.15 }{2 \times 96485}\right ) \ln(10)\\\\=0.010 -0.01285 \times 2.3 = 0.10 - 0.03 = \textbf{0.07 V}\\\text{The cell potential is }\large\boxed{\textbf{0.07 V}}

 

3 0
3 years ago
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