An effective collision between reactant particles requires the particles to have the proper what?

Answers

Answer 1

Answer: energy and oreantation its one if not bolth of those

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A sample of a compound contains 32.0 g C and 8.0 g H. Its molar mass is 30.0 g/mol. What is the compound’s molecular formula

Answers

The compound's molecular formula is C2H6. This is obtained by:

mass moles divided by smallest moles
C 32g 32/12 = 2.67 1
H 8g 8/1.01 = 7.92 approx. 3

Next, divide both terms by the smallest number of moles, 2.67. This gives 1 and 3. So the empirical formula is CH3 which has a molar mass of 15g/mol. Given the molar mass of the molecular formula as 30g/mole, we can calculate the factor by which to multiply the subscripts of CH3.

X = molar mass of molecular formula / molar mass of empirical formula = 30/15
X=2

So (CH3)2 is C2H6.

Answer:

the answer is D on edge 2021

Explanation:

2. A magnifying glass is an example of a _______ lens.A. converging
B. double-concave
C. plano-convex
D. plano-concave
Student Answer: C
Answer: Incorrect
Reference:

3. If the distance from a converging lens to the object is less than the focal length of the lens, the image will be _______ the object.
A. real, inverted, and smaller than
B. virtual, upright, and larger than
C. virtual, upright, and smaller than
D. real, inverted, and larger than
Student Answer: A
Answer: Incorrect
Reference:

4. Which of the following values represents an index of refraction of an actual material?
A. .25
B. 0
C. .5
D. 1.25
Student Answer: C
Answer: Incorrect
Reference:

5. Which, if any, of these mirrors can produce a real image?
A. Plane
B. Convex spherical
C. No mirrors can produce a real image.
D. Concave spherical
Student Answer: A
Answer: Incorrect
Reference:

6. When white light is incident on a prism, which one of the resulting color components will have the lowest index of refraction?
A. Yellow
B. Blue
C. Green
D. Orange
Student Answer: C
Answer: Incorrect
Reference:

12. Which of the following is not a reason fluorescent lamps are advantageous over incandescent lamps?
A. Fluorescent lamps operate at a higher temperature than incandescent lamps.
B. Fluorescent lamps are more efficient than incandescent lamps.
C. Fluorescent lamps dissipate more energy as light instead of heat than incandescent lamps.
D. Fluorescent lamps produce light with less glare than incandescent lamps.
Student Answer: B
Answer: Incorrect
Reference:

15. Which of the following is not a characteristic of electromagnetic waves?
A. They can travel through a vacuum.
B. They can be refracted.
C. They can be reflected.
D. They can travel at various speeds through any one material.
Student Answer: B
Answer: Incorrect
Reference:

16. A ray at which angle would produce the most glare?
A. 37 degrees
B. 70 degrees
C. 25 degrees
D. 59 degrees
Student Answer: B
Answer: Incorrect
Reference:

18. Which of the following statements is true of glare control?
A. Using bulbs that aren't frosted will help to diffuse the light and reduce glare.
B. Special care must be taken to prevent glare where a low illuminance is required.
C. Redirecting lamp fixtures and adjusting bulb types will do little to control glare.
D. Indirect lighting is preferred to direct lighting because it produces less glare.
Student Answer: C
Answer: Incorrect
Reference:

19. Which of the following objects uses two converging lenses to produce two images, the second of which is virtual, magnified, and inverted?
A. Slide projector
B. Compound microscope
C. Corrective eyeglasses
D. Camera
Student Answer: D
Answer: Incorrect
Reference:

20. The light intensity of a source is 100 candelas. The illuminance on a surface is 4 lux. How far is the surface from the source?
A. 4 meters
B. 6 meters
C. 5 meters
D. 7 meters
Student Answer: B
Answer: Incorrect

Answers

The answer to question 2 is C. A magnifying glass is an example of a plano-convex lens, where one side of the lens is flat and the other is a convex curve. The answer to question 3 is either B or C. A converging lens is curved on both sides and so the rays of light coming out of it converge at a point, which is known as the focal point. When the object is inside the focal point, the image is real and inverted. If it is inside the focal point, the image is virtual and upright. Therefore the image in this question will be upright. The focal length is the distance between the image that is being magnified and the centre of the magnifying lens. A real image can only be formed when the object is further away from the lens than the focal length. Therefore, in this question, the image is virtual, as the object is closer to the lens than the focal length. The answer to question 4 is D because the index of refraction cannot be less than 1. The answer to question 5 is D because only concave mirrors can produce real images; other types produce virtual images. For question 6, the answer is D. In the rainbow, each of the colours refracts at a slightly different angle; red has the smallest refractive index and violet the largest. Of the options, orange is closest to red. For question 12, A is the answer. A higher operating temperature is not a reason fluorescent lamps are better than incandescent lamps because they have a lower operating temperature. Question 15: all of these are characteristics of different electromagetic waves. For question 18, B is true - special care must be taken when low illuminance is required to reduce glare. The answer to question 19 is B - a compound microscope makes use of two lenses. For question 20, the answer is 5 meters away. The illuminance (E) is equal to light intensity (I) divided by the square distance from the light source (d). Therefore, 4 = 100/d squared. To switch this around, d squared is equal to 100/4 = 25. Then find the square root of 25, which is 5.

20 g of sugar is stirred into a beaker containing 100 g of water. After the sugar has completely dissolved, the solution is put on a scale. What is the mass of the solution?

Answers

The mass of the solution of sugar and water is 120 grams.

What is mass?

Mass is the quantity of matter of a physical body.

The mass of the sugar is given is 20g

The mass of the water is 100 g.

100 + 20 = 120 gram

Thus, the mass of the solution of sugar and water is 120 grams.

Learn more about mass

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The mass of the solution should be 120g since 20g of sugar were added to 100g and 100+20=120.
I hope this helps. Let me know in the comments if anything is unclear.

Muscles perform what type of energy transformation?

Answers

Muscles perform energy transformation from chemical energy to kinetic energy which is very evident as we do our day to day activities. Hope this answers the question. Have a nice day. Feel free to ask more questions. Thank you.

What color is used to show OXYGENATED blood?

Answers

Answer:

MRCORRECT has answered the question

Explanation:

The color of human blood ranges from bright red when oxygenated to a darker red when deoxygenated. It owes its color to hemoglobin, to which oxygen binds.

Where does the equilibrium point occur in a reaction system

Answers

The equilibrium point for a reaction is the point at which the rate of the forward reaction equals that of the reverse reaction. At this point there will not be a net change in the amount of products or reactants observed.

I hope this helps. Let me know if anything is unclear.

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Ionization refers to the process ofa. changing from one period to another. c. turning lithium into fluorine. b. losing or gaining protons. d. losing or gaining electrons.