Is mass conserved when 200 g of water undergoes a physical change? Use complete sentences to support your answer by explaining how this can be demonstrated.

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its science

Answer:

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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:

+6.

Explanation:

So, a chromium atom here has an oxidation number of +6.

Answer: Clothes purely made of synthetic fibers are not comfortable in a hot and humid environment as they don't have the property to absorb water or sweat quickly so their water-resistant property makes them unsuitable for hot humid environment .

Explanation:

Mixing of synthetic fiber and natural fibers enhances the properties such as strength, elasticity, and ease of ironing and washing. Generally in hot environments it is preferred to wear a mixture of synthetic and natural fiber than wearing only clothes made from synthetic fiber .

Moreover, mixing synthetic fibres with natural fibres enhances their properties, such as strength, elasticity and ease of washing and ironing. Hence, these days clothes made out of a mixture of synthetic fibres and natural fibres are more popular than those made purely out of synthetic fibres.

Answer: It Would Be The Warmest As The Light is Falling Directly Upon It. The Top And Bottom Would Be Much Cooler Than The 'Equator'.

Explanation:

Answer:

carbon dioxide is produced.

CO2 is the chemical formula.

Answer:

photosynthesis removes carbon dioxide from the atmosphere while respiration puts back carbon dioxide.

Explanation:

hope this helps

Answer:Trade winds blowing in a curved manner

Explanation:Because i like the answer

Rocks expand and contract when they are heated and cooled which cause them to break. Physical weathering is experienced to the crust of earth. The last state of physical weathering is sand. Rocks that have some cracks are undergoing frost wedging.

Weathering is a geographical process of deterioration of rocks and minerals into parts and eventually into dust and sand. Thermal stress, a phenomenon caused by temperature variations, can also contribute to mechanical weathering.

The expansion and contraction of rock is influenced by temperature changes. The rock's structure deteriorates as this occurs repeatedly. Physical weathering and mechanical weathering disintegrates rocks without any chemical changes and  it happens to the earth's crust.

Erosion of rocks eventually results in formation of sand. Frost wedging is a process by which ice erodes the rocks having cracks. It is also called ice wedging.

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Answer: How can temperature lead to weathering of rocks= Rocks expand and contract when they are heated and cooled which cause them to break.

Which part of Earth experiences physical weathering= crust

Which is the last stage of physical weathering in rocks= sand

What must be present on a rock that undergoes frost wedging= a crack

Explanation: I took the test

Answer: D) longer wavelength.

Explanation:

Answer:

They would form an ionic compound. Ammonium Hydroxide or (NH_4)(OH).  

Explanation:

The underscore represents a superscript.

Carbon and Hydrogen.

Answer:

Mostly decaying organisms are needed to present in marine mud to form fossil fuels.

Explanation: When organisms and plants died and sank to the bottom of swamps and oceans, brown soil-like materials called peat are formed. Over millions of years, the peat became covered with sand, clay and other minerals and the peat is converted into layers of sedimentary rocks. After a long time, different type of fossil fuels are formed.

Answer:

I don’t know bro

Explanation: WHY DID U REMOVE THIS

The chemical formula VI3 is composed of an unknown element with the symbol "V" and three atoms of iodine. It is not a common compound, as there is no element with the symbol "V". Therefore, it is not possible to write the Roman numeral atomic name from this formula.

The chemical formula SnO2 represents tin(IV) oxide, which is composed of one tin atom and two oxygen atoms. To write the Roman numeral atomic name from this formula, we can follow these steps:

Sn: tin

O: oxygen

The oxidation state of Sn is +4, and the oxidation state of O is -2.

To determine the Roman numeral atomic name, we need to find the charge on the cation (Sn) that balances the charge on the anion (O). Since the charge on two O atoms is -4, the charge on Sn must be +4 to balance the charge.

The Roman numeral for +4 is IV.

Therefore, the Roman numeral atomic name for SnO2 is tin(IV) oxide.

Answer:

atomic name snO2 = Tin (IV) oxide

Explanation:

Answer:

Weathering is the breaking down or dissolving of rocks and minerals on Earths surface. Once a rock has been broken down, a process called erosion transports the bits of rock and minerals away. Weathering and erosion constantly change the rocky landscape of Earth. Weathering wears away exposed surfaces over time.

The effects of weathering disintegrate and alter mineral and rocks near or at the earth's surface. This shapes the earth's surface through such processes as wind and rain erosion or cracks caused by freezing and thawing. Each process has a distinct effect on rocks and minerals. Mechanical weathering increases the rate of chemical weathering. As rock breaks into smaller pieces, the surface area of the pieces increases Figure below. With more surfaces exposed, there are more surfaces on which chemical weathering can occur. Mechanical weathering may increase the rate of chemical weathering.

Weathering, erosion, and deposition are processes that act together to wear down and build up the Earth's surface. These processes have occurred over billions of years. Weathering is any process that breaks down rocks and creates sediments. Weathering causes the disintegration of rock near the surface of the earth. Plant and animal life, atmosphere and water are the major causes of weathering. Weathering breaks down and loosens the surface minerals of rock so they can be transported away by agents of erosion such as water, wind and ice.

Answer:

no

Explanation:

they avoid most fur and bones because hawks and eagles rip them apart to get the flesh and owls swallow bones and fur too

Answer:

All of the above

Explanation:

I believe all three are true. They see how the organism is similar to other organisms. They see if the organism has the characteristics of an animal or plant. They look at what makes the organism unique.

For fossil fuel: Oil spills and leaks during extraction or transport can pollute water sources.

For nuclear power: An uncontrolled nuclear reaction can result in widespread a contamination of water.

Answer:

i dont know

Explanation:

I'm sorry i needed points for my own question! I only had 8:( sorry

Based on the atomic arrangement of quartz, it is can be concluded that quartz is an extended structure that is made of repeating patterns of atoms.

Quartz is a hard crystalline mineral found within the Earth's crust and which is composed mainly of the mineral silica. Silica is mostly silicon(iv) oxide.

Quartz is colourless and its crystalline structure is of a hexagonal prism. The atoms are arranged in a regular repeating grid to form the hexagonal crystal.

Therefore, it is can be concluded that quartz is an extended structure that is made of repeating patterns of atoms.

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which subject

Explanation:

write properly

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:

As – Arsenic

Explanation:

Let's break this down step by step. Make sure you have a periodic table to reference.

"I am a metalloid" – We will be looking towards the right side of the periodic table. The possible choices are boron (B), silicon (Si), germanium (Ge), arsenic (As), antimony (Sb), tellurium (Te), and astatine (At).

"I am in the nitrogen family" – Families are elements grouped by columns. The nitrogen family is group 15. The possible choices are now arsenic (As) and antimony (Sb).

"and row 4" – Counting from the very top (don't forget row 1 of hydrogen and helium), we can see that arsenic (As) is in the 4th row.

"I have an atomic mass of 74.92" – Arsenic (As) does have an atomic mass of 74.92, which confirms our answer.

Hope this helps!

Answer:

first you need to pick out a model that u can use so u can define it into order

hope that works

Answer:

yea what the girl above said

Explanation:

To prepare 250 mL of a D10/NS solution using D10W and a vial of NaCl 4 mEq/mL, you would need 9.6 mL of NaCl. Normal saline (NS) contains 154 mEq/L of sodium chloride (NaCl). To prepare 250 mL of NS, you would need 250 mL * (154 mEq/L) = 38500 mEq of NaCl. Since the vial of NaCl contains 4 mEq/mL, you would need 38500 mEq / (4 mEq/mL) = 9625 mL = 9.6 mL of NaCl. So the correct answer is b. 9.6ml.

Answer:

option A is the correct answer for ur question