A cyclist rode at an average speed of 15 mph for 30 miles. How long was the ride? Solve for time.

A) 2 hours
B) 1 hour
C) 3 hours
D) 0.5 hours

Answer: B. Burning of wax in a candle

Explanation: Burning of wax is a chemical change due to the combustion of fuel in the presence of oxygen to produce carbon dioxide. A physical change part of it is when the wax of candle melts and the shape is lost.

Answer:

A.

Explanation:

Answer:

b) has leaves that are 8 -10 cm long

Answer:

orange made up from methyl

Answer:

I don’t know bro

Explanation: WHY DID U REMOVE THIS

Answer: its 5ft tall and 12 inches

Explanation:

Answer:

1. eyepiece

2. body piece

3. Adjustments

4. Arm

5. Objective lens

6. Stage

7. Mirror

8. Base

Explanation:

I hope this helps.

Here's the labeled list of different parts of a microscope using the word bank; Eyepiece (ocular lens), Objective lenses, Arm, Stage, Coarse focus, knob, Fine focus knob, Diaphragm or Iris diaphragm, and Light source (lamp or mirror)

Eyepiece (ocular lens): This is the lens at the top of the microscope that you look through to view the specimen. It typically provides a magnification of 10x.

Objective lenses: These are the lenses located on the rotating nosepiece, closest to the specimen. They come in different magnifications, such as 4x, 10x, 40x, and 100x, and are used to magnify the image of the specimen.

Arm: The arm is the curved part of the microscope that connects the eyepiece and the base. It is used to carry the microscope and provides a handle for holding it securely.

Stage: The stage is the flat platform where the specimen is placed for observation. It may have clips or a mechanical stage to hold the slide in place.

Coarse focus knob: This knob is used for large, rapid adjustments of the focus. It moves the stage up and down to bring the specimen into rough focus.

Fine focus knob: The fine focus knob is used for precise adjustments of the focus. It is used after the coarse focus to bring the specimen into sharp focus.

Diaphragm or Iris diaphragm: The diaphragm or iris diaphragm is located under the stage and controls the amount of light passing through the specimen. It helps in adjusting the contrast and brightness of the image.

Light source (lamp or mirror): The light source provides illumination for the specimen. It can be an electric lamp located at the base or a mirror that reflects natural light onto the specimen from above.

These are the essential parts of a compound light microscope, which is a widely used type of microscope for magnifying and observing small specimens in various fields such as biology, medicine, and materials science.

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Answer:

the mass use his or her force to keep it at the same speed

Explanation:

Lithium is a soft, silvery-white, metal that heads group 1, the alkali metals group, of the periodic table of the elements

Answer:

The answer is (3) 0.193M.

Explanation:

To find the molarity of HNO3, you just need to use the M1V1=M2V2 equation (no need to worry about ionization constants because HNO3 is monoprotic and KOH dissociates 1:1). Since the molarity you are looking for is M1, you get M1=M2V2/V1=(0.150)(32.1)/25.0= 0.193M

Answer:

I would just find a measuring cup and do it that way it's the easiest way

Answer:

A neutral solution is neutral if it has the same concentration of hydrogen ions as the hydroxide ions.

Explanation:

Hydrogen ions have a positive charge [H+] while Hydroxide ions have a negative charge [OH-]. Given that a solution has equal amounts of both Hydrogen and Hydroxide ions, the charges cancel each other out resulting in a neutral solution.

Answer:

39

Explanation:

Relative mass does not need to be calculated as it is listed on the periodic table. Potassium's relative atomic mass is around 39.

Answer:

70.5g

Explanation:

D=M/V

D=4.7 g/ml

V=15ml

plug into equation

4.7=m/15

multiply both sides by 15

m=70.5g

Answer:

70.5g/ml

Explanation:

density times volume

Answer:

hold on i will help you soon

The period of time when sexual intercourse takes place between two organisms is called mating. However, all the matings need not end in fertilization.

The gestation period is a time when the embryo develops completely into a fetus. This is usually from the time of fertilization to the time of giving birth.

Let us take the comparison of the gestation period of 3 mammals.

The gestation period of a cow varies from 279- 287 days. The mating between the bull and cow occurs during the heat or oestrus period of the cow. At that time the bull mounts on the cow or vice-versa may happen during the mating period. This is termed bulling.

In the case of horses, the gestation period is 320-380days. The mating ritual in a horse is a bit different than in a cow. It usually has three phases of sexual behavior which includes: courtship, mating, and post mating behavior. During courtship, the stallion which is the male horse will approach the mare, prance, sniff her, nuzzle her, and groom her. The mare which is the female horse may squeal, kick, or move away to show the stallion that she is not ready. When the mare is receptive to breeding, she may stand still, deviate her tail, and urinate, leading the stallion to mount her. It usually breeds well in pastures than in controlled environmental breeding conditions.

Whereas in camels, the gestation period is far longer than in cows and horses. It is about 360-440days. The male camel displays its organ called a dulla to show out is ready for mating. The male camel Urinates on its own tail and swishes it over its back so that the Urine contains female-attracting pheromones. It shows distinct violent behavior towards other male camels. The female camel undergoes an estrous cycle in the breeding season which lasts receptive for 3-4 days, and non-receptive following the other 10 days. In the receptive period, the camel sits down and exposes its genitalia for the male camel to copulate. The whole mating takes about 20 minutes and is accompanied by gurgling and frothing by the male and bleating by the females.

It should be noted that African elephants have longer gestation periods like Asian elephants whereas no other animal has a longer gestation period than an elephant or a shorter gestation period than mice.

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Answer: nucleus  

Explanation:

Answer:

Answer: 12

Explanation:

\({ \sf{3Na _{2} O +2 AIBr _{3} \rightarrow 6NaBr + AI _{2} O _{3} }}\)

\({ \tt{sum = 3 + 2 + 6 + 1}} \\ = { \tt{12}}\)

Answer:

12

Explanation:

3+2+6+1

Answer: Two different elements that are chemically combined from a compound, but two different elements that are physically combined form a mixture.

Hope this helped :D

Answer: the first paragraph is rain forest biome and the 2nd one is arctic tundra biome and finally the last paragraph is ocean or marine biome

Explanation:

rain forests have warm temperatures and include alot of animals and plants , artctic tundra biome includes cold temperatures ice stuff and all that and ocean or marine biome is pretty much just the ocean with seals , whales and marine life yk.

Answer:

Look it up

Explanation:

If you don't know then look it up

Answer:

"Yes," a moving skateboard has energy.

When the skater seems to be in motion or throughout a movement, the potential energy converts itself into the kinetic form of energy, and then it becomes potential energy again.

Furthermore, somewhere after every movement, the same skateboarder was around a similar height, — in other words thus every time it is equally powerful.

The response is thus the right one.

Explanation:

Answer:

Explanation: it would be D because hydrogen is very  acidic and don't worry  i'll always be here to help

Answer: A

Explanation: the energy in the water has faded and then with the removal of energy often comes a state change

Answer:

a voltaic cell

Explanation:

Answer:

Explanation:

A voltaic cell did exam dont worry

Answer:

In this cellular respiration process, some chemical bonds between atoms in oxygen and glucose molecules are broken. As atoms are rearranged, new chemical bonds are formed between different atoms to produce carbon dioxide gas and water. This process releases energy.

Answer:

the no.of protons in k is 19 and no.of neutrons is 20.

THE NUMBER OF PROTONS IN AL IS 13 AND NO.OF NEUTRONS IS 14

THE NUMBER OF PROTONS IN BORON IS 5 AND NO.OF PROTONS IS 6

THE NUMBER OF PROTONS IN LI IS 3 AND NO.OF NEUTRONS IS 4

Answer:

hmm

Explanation:

I don't know