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Answer:

The answer is steam of fossil fuels

Answer:

solid

Explanation:

gold is relatively unreactive and exists as a solid at room temperature

It is found as a solid in gold mines, and in gold nuggets in river beds

I believe this is correct! :D

Answer:

I believe it is B

Explanation:

I am on this lesson too :)

Answer:

III  Electropositivity increases down the group

Explanation:

Answer:

7.53×10^23

Explanation:

i dont know how

Answer:

There are 6.25×10²³ atoms in 1.25 moles of Zn

Answer:

Here's ur answer

Explanation:

Density = mass ÷ volume

            = 217.0 g ÷ 24.3 cm³

            = 8.93 g/cm³

Answer:

lysol and glue pretty simple.

Explanation:

Answer:

glue, and some laundry detergent.

Explanation:

only some laundry detergents work.

for a butter slime all you need is Elmer's wood glue, and gel shaving foam it makes a thick butter like consistency slime.

if you want to get fancy you can add a drop of food coloring and sparkles. these work good for me, you should give them a try. thank you and have a great day! if you like my answer please mark brailyist thanks again. if you have any questions please feel free to ask me! thanks again.

Answer:

aluminum is highly reactive

Answer:

Aluminum is highly reactive

Explanation:

Chemical property is defined as the property in which chemical composition of the substance changes.

For example, reactivity, oxidation state, inflammability etc are all chemical properties.

Therefore, we can conclude that out of the given options, Aluminum is highly reactive depict a chemical property of aluminum.

Answer:

What are you a 6 yo? Anyways, the most common properties are, They are good conductors of electricity, They are lustrous and They are sonorous.

Answer: Luster: Metals are shiny when cut, scratched, or polished.

Malleability: Metals are strong but malleable, which means that they can be easily bent or shaped.

Conductivity: Metals are excellent conductors of electricity and heat.

Explanation: Hope this helped!

Answer:

batqyqy6w

Explanation:

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Answer:

D

Explanation:

The blowing sand chips away at the rocks and, over time, the rocks start getting smaller, due to the weathering.

Answer:

Wind picks up sand or dry soil

And carries it from one place to another

Explanation:

A noble gas has 8 electrons between the p and s orbitals of the outer shell. Helium is the exception because it only has two electrons.

Answer:

(n, l, m sub l, m sub s)

N: principle quantum number (1,2,3,4,etc)

l: angular momentum quantum number, the shape (l has to be at least 1 less than n, but can be 0 depending on n)

M sub l: magnetic quantum number (l determines this number)

M sub s: spin quantum number (can only ever be 1/2 or -1/2)

Explanation:

The principle, azimuthal, magnetic, and spin quantum numbers specify the principle shell, the shape of the orbital, the number of orbitals, and electron spin respectively.

The set of numbers that describes the position and energy of the electron are called quantum numbers. Four quantum numbers are principal, azimuthal, magnetic, and spin quantum numbers.

Principal quantum numbers (n) designate the principal electron shell of the atom and the most probable distance between the nucleus and the electrons. A larger value of the principal quantum number indicates a large distance between the electron and the nucleus.

The azimuthal quantum number (l) describes the shape of an orbital in which an electron is present. Its value is equal to the total number of angular nodes in that orbital.

The magnetic quantum number describes the total number of orbitals in a subshell and the orientation of these orbitals.  The value of the spin quantum number (s) offers the direction in which the electron is spinning and it has only two possible values +½ and -½.

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A student makes two mixtures, both made of the same substances. Both mixtures can be physically separated into its components. Therefore, option C is correct.

A substance made up of two or more separate chemical compounds that are not chemically linked is referred to as a mixture. A mixture is the physical blending of two or more substances while maintaining their distinct identities. It can take the form of solutions or suspensions.

A pure substance is a single sort of matter that cannot be divided into other kinds of matter by any physical methods. A pure substance has a known and consistent composition at all times.

When two or more distinct substances physically join, a mixture is produced that can be dispersed back into its constituent parts. When two or more compounds combine to create a new substance that cannot be broken down into its constituent parts, a chemical reaction takes place.

Thus, option C is correct.

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Answer:

Noble gases, atoms which have complete filled outer orbits.

Explanation:

SInce, you have given no options elements like Neon, Helium,etc

Noble elements are the atoms which have stable electronic configuration in the ground state.

Electronic configuration is defined as the distribution of electrons which are present in an atom or molecule in atomic or molecular orbitals.It describes how each electron moves independently in an orbital.

Knowledge of electronic configuration is necessary for understanding the structure of periodic table.It helps in understanding the chemical properties of elements.

Elements undergo chemical reactions in order to achieve stability. Main group elements obey the octet rule in their electronic configuration while the transition elements follow the 18 electron rule. Noble elements have valence shell complete in ground state  and hence are said to be stable.

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Answer:

The law of conservation of mass has already been applied. There is an equal number of each element on both sides of the equation.

Explanation:

Have a Blessed Day

I hope I helped

Hydroxychloroquine cannot be made from grapefruit and lemon rinds.

Hydroxychloroquine is not a natural compound, rather it can only be synthesized from quinoline molecule in the laboratories.

During the synthesis of hydroxychloroquine, several sequential chemical reactions and purifications are done.

Hydroxychloroquine is used in the treatment of:

But when grapefruit and lemon rinds are boiled in water, a natural chemical compound known as limonene is obtained.

Therefore, hydroxychloroquine cannot be made from grapefruit and lemon rinds,

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Answer:

The metamorphism of limestone results in the formation of marble

Explanation:

Explanation:

It provides an objective, standardized approach to conducting experiments and, in doing so, improves their results. By using a standardized approach in their investigations, scientists can feel confident that they will stick to the facts and limit the influence of personal, preconceived notions.

I hope this helps you out!

Answer:

A homologous series is a series of compounds with the same general formula, usually varying by a single parameter such as the length of a carbon chain. Compounds within a homologous series typically have a fixed set of functional groups that gives them similar chemical and physical properties.

Answer:

A

Explanation:

Answer:

A. antibodies

Explanation:

Answer: In metallic bonds, the valence electrons from the s and p orbitals of the interacting metal atoms delocalize. That is to say, instead of orbiting their respective metal atoms, they form a “sea” of electrons that surrounds the positively charged atomic nuclei of the interacting metal ions. Metals are shiny.

Explanation: Hope this helped!

Answer:

Monkey have tail we come from monkey

Answer:

The coccyx, or tailbone, is the remnant of a lost tail. ... The coccyx serves as an attachment site for tendons, ligaments, and muscles.  Tailbones helped our ancestors with mobility and balance

Explanation:

Answer:

We don’t have the enzymes necessary to remove nitrogen from the atmosphere; we get our nitrogen from the food we eat. ^^

Although almost 80% of the atmosphere is made up of nitrogen gas, most living things don't have the enzymes necessary to use nitrogen directly from the atmosphere. We obtain the nitrogen we need to make proteins and DNA, if we can't obtain it from breathing we can get it by eating organic plants and animals.

Nitrogen is a key element in the nucleic acids DNA and RNA, which are the most important of all biological molecules and crucial for all living things. DNA carries the genetic information, which means the instructions for how to make up a life form.

It is used to make amino acids in our body which in turn make proteins. The human body comprises 3% nitrogen (by mass). It is an essential part of amino acids (makeup proteins), nucleic acids (DNA, RNA), ATP (energy molecule), etc. It is nearly impossible to live without nitrogen.

Therefore, Although almost 80% of the atmosphere is made up of nitrogen gas, most living things don't have the enzymes necessary to use nitrogen directly from the atmosphere. We obtain the nitrogen we need to make proteins and DNA, if we can't obtain it from breathing we can get it by eating organic plants and animals.

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Answer:

They both contain chemical energy, which people and cars convert into mechanical energy.

Explanation:

Answer:

B)They both contain chemical energy, which people and cars convert into electrical energy.

Explanation:

The British Petroleum (bp's) effort to close the blowout preventer and install a containment dome following an explosion on the deepwater horizon drilling rig is an example of regulatory policy change.

The deepwater horizon drilling rig is a semi-submersible, transportable, floating, flexibly oriented drilling rig that could work in sea depths of up to 10,000 feet which is approximately 3,000 meters.

During the explosion that occurred in April 2010, British Petroleum made several efforts to contain the damages made and to prevent further outbreaks of disasters.

Part of the changes was shifting from a blowout preventer that has a specialized valve to seal, manage, and monitor oil and gas wells in order to prevent blowouts to a containment dome (a crucial component of a system meant to control an oil well's underwater blowout).

Therefore, we can conclude that the British Petroleum (bp's) effort to close the blowout preventer and install a containment dome following an explosion on the deepwater horizon drilling rig is an example of regulatory policy change.

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