How many grams of Aluminum Oxide are produced when 3.64 g of Aluminum reacts with an excess of Oxygen?

4Al + 3O2 → 2Al2O3

_ grams of Al2O3 (round to 3 sig figs)

Answer:

N ∠ C ∠ P

Explanation:

Atomic radius:

It is define as the distance from nucleus of an atom the outer most electronic shell.

As we move down the group atomic radii increased because of increase of atomic number.  Electrons are added in next level cause the atomic radii to increased. The hold of nucleus on valance shell become weaker because of shielding of electrons thus size of atom increased.

When we move from left to right across the periodic table electron are added in the same shell at the same time protons are also added in the nucleus hence positive charge is going to increase and this effect lead to the greater nuclear attraction. The electrons are pull towards the nucleus and valance shell get closer to the nucleus and atomic radii decreases.

Carbon and nitrogen are present in period 2 while phosphorus is present in period 3 thus phosphorus has largest atomic radii. Carbon and nitrogen are present in same period but nitrogen is more right as compared to the carbon which means nitrogen has one more valence electron thus its size is smaller than carbon.

Values of atomic radii.

P = 98pm

C = 67pm

N = 65 pm

N ∠ C ∠ P

Answer:

r-o-r

Explanation:

B I'm not sure but good luck

The general structure of ether follows the R-O-R' pattern.

The general structure of ether is given by:

Where R and R' represent alkyl or aryl groups.

In other words, ethers contain a central oxygen atom and two alkyls or aryls at the extreme ends.

Thus, the correct general structure from the options would be B.

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To solve this we must be knowing each and every concept related to autotroph. Therefore, eugenides and algae, both can be autotrophic. The correct option is option B.

An creature that can make its own sustenance out of inorganic materials is known as an autotroph. Contrarily, heterotrophs are species that can't make their own nutrition and must eat other organisms in order to survive.

In contrast to autotrophs, heterotrophs are unable to manufacture their own nourishment. Heterotrophs need to consume organic material in order to produce the nutrients needed for life, not inorganic. Eugenides and algae, both can be autotrophic.

Therefore, Eugenides and algae, both can be autotrophic. The correct option is option B among all the given options.

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Answer:

the food chain you mean

Explanation:

pollution than mosquitoes then alligators

Answer:

Cellular division has three main functions: (1) the reproduction of an entire unicellular organism, (2) the growth and repair of tissues in multicellular animals, and (3) the formation of gametes (eggs and sperm) for sexual reproduction in multicellular animals.

Answer:

There are four key reasons why a cell may be required to divide mitotically:

Tissue repair / replacement.

Organismal growth.

Asexual reproduction.

Development (of embryos)

The entropy of the system increases and heat is absorbed in this chemical reaction.

When ammonium chloride NH4Cl reacts with water, it absorb energy for the surrounding and decomposes into its component ions such as NH4+ and Cl- so we can conclude that increases occur in the entropy of the system and heat is absorbed.

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Answer:

cultures that contributed to modern scientific study ... Identify possible source of Earth's magnetic field ... turn it into glucose, animals eat plants, CO2 is released when when animal poops ... Describe one way ecosystems respond to change.

Explanation:

Answer:

C

Explanation:

This is a correct answer i think soo

Answer:

Li

Explanation:

Answer:

Chemical to electrical to kinetic energy

Explanation:

In a battery-operated fan, first, the chemical energy stored in the battery is converted to electrical energy within the fan and then the electrical energy, in turn, is converted to kinetic energy which makes the blades of the fan rotate. The rotation of the fan creates a breeze that forces the evaporation of sweat molecules from the surface of the skin and causes cooling in return.

Answer:

C: Something looking bent under water.

Answer:

b

Explanation:

Answer:

it is B hope I helped

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Explanation:

Answer:

The missouri River is a Longesr tributary of the Mississippi River.

The Missouri River is tributary of the Mississippi River.

The Missouri River is known as the longest river in the United States. Missouri flows east and south for 2,341 miles before mixing with the Mississippi River north of St Louis, Missouri.

The river drains include parts of ten U.S. states and two Canadian provinces although a tributary of the Mississippi, the Missouri River is marginally longer and has a comparable volume of water. When combined with the lower Mississippi River, it creates the world's fourth-longest river system.

People depend on the Missouri River and its tributaries as a source of transportation and sustenance. The Missouri River was the main route for the westward expansion of the U.S. during the 19th century.

During the 20th century, the Missouri River was developed for irrigation, flood control, and the generation of hydroelectric power. Fifteen dams formed the stem of the river, with hundreds more on tributaries.

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Answer:

Because we are not perfect

Explanation:

This day is added to the calendar as a corrective measure, because the Earth does not orbit the sun in precisely 365 days.

Answer:

it's answer is 24 yards

hope it helps you friend

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Answer:

3. V and T

Explanation:

For an ideal gas the volume and temperature remains directly proportional even if other conditions are constant.

This is the premise of the Charles's law.

Charles's law propounded by Jacques Charles found the relationship between the volume and temperature under constant pressure and predicted the absolute scale of temperature.

His law states that;

         "The volume of a fixed mass (mole) of a gas varies directly as its absolute temperature if the pressure is constant".

So;

                  V ∝ T (P, n constant)

Answer:

I have it.

Explanation:

Answer: pretty sure it B

Explanation:

Answer:

the answer is b hope this helps

Explanation:

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Answer:

[tex]molar \: mass \: of \: FeSO _{4}.7H _{2}0 = (56 + 32 + (16 \times 4) + (7 \times 18)) \\ = 278 \: g \\ \\ (278 \times 1000) \: mg \: of \: FeSO _{4}.7H _{2}0 \: contains \: (56 \times 1000) \: mg \: of \: Fe \\ 250 \: mg \: of \: FeSO _{4}.7H _{2}0 \: contain \: ( \frac{250 \times 56 \times 1000}{278 \times 1000} ) \\ = 50.35 \: mg \: of \: Fe[/tex]

The mass of Fe delivered by 250 mg Iron sulfate heptahydrate has been 50.35 mg.

The molar mass of the compound has been the sum of the mass of each element present in the compound. The given compound is iron sulfate heptahydrate. The compound has molar mass 278 grams.

1 mole of compound has been consisting of 1mole of iron.

278 grams Iron sulfate = 56 grams Fe

278,000 mg Iron sulfate = 56,000 mg Fe.

The mass of iron in 250 mg compound can be given as:

278,000 mg Iron sulfate = 56,000 mg Fe

[tex]\rm 250\;mg \;Iron\;sulfate\;=\;\dfrac{56,000}{278,000}\;\times\;250[/tex]

250 mg Iron sulfate tablet = 50.35 mg Fe.

The mass of Fe delivered by 250 mg Iron sulfate heptahydrate has been 50.35 mg.

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Answer:

O volume of the solution

Explanation:

Molarity is used to describe the concentration of solution. It tells how many moles are dissolve in per litter of solution.

Formula:

Molarity = number of moles of solute / volume of solution  in L

For example:

if we dissolve the 1 mole of NaCl to make the solution of volume 2 L. The molarity of solution is,

M = 1 mol / 2 L

M = 0.5 M

Answer:

0.807 moles

Explanation:

No of molecules = No of mole × Avogadro's number

No of mole = No of molecules / Avogadro's number

No of mole = 5.24×10^23/6.02×10^23

0.870 moles

Answer:

Mass of carbon dioxide= 44 g

Explanation:

Zinc carbonate      →   Zinc oxide + carbon dioxide

  125 g                  =       81 g  + X

X = 125 g-81 g

X = 44 g

According to the law of conservation mass, mass can neither be created nor destroyed in a chemical equation.

This law was given by French chemist  Antoine Lavoisier in 1789. According to this law mass of reactant and mass of product must be equal, because masses are not created or destroyed in a chemical reaction.

For example:

In given photosynthesis reaction:

6CO₂ + 6H₂O + energy → C₆H₁₂O₆ + 6O₂

there are six carbon atoms, eighteen oxygen atoms and twelve hydrogen atoms on the both side of equation so this reaction followed the law of conservation of mass.

Answer:

\A.

Explanation: Bromine and arsenic have the same atomic radius, which is 115 and Potassium has an atomic radius of 220.

Answer Electromagnetic waves are used to transmit long/short/FM wavelength radio waves, and TV/telephone/wireless signals or energies. They are also responsible for transmitting energy in the form of microwaves, infrared radiation (IR), visible light (VIS), ultraviolet light (UV), X-rays, and gamma rays.

Explanation:

Electromagnetic waves are important in society today because they are used to "transmit long/short/FM wavelength radio waves, and TV/telephone/wireless signals or energies. They are also responsible for transmitting energy in the form of microwaves, infrared radiation (IR), visible light (VIS), ultraviolet light (UV), X-rays, and gamma rays."

Answer:

-867.7kJ

Explanation:

3H2(g)+O3(g)—>3H2O(g)=

-867.7kJ

Answer:

This is false.

Explanation:

This is false because water freezes at 32 degrees faraheint and carbon would freeze at a different temperature.

Answer:

an example is a dam

Explanation:

dams generate electricity, the water that flows through the dam have propellers that when turned send up energy to the generators which create power.

Answer:

Blues

Explanation:

Colors of Rainbow => ROYGBIV

Red    Orange   Yellow   Green   Blue   Indigo   Violet

low energy  => => => => => => => => => => high energy

low frequency => => => => => => => => =>  high frequency

long wavelengths => => => => => => => => short wavelengths

Note: All L's on the Left => low, low, long; other end are opposites.