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Moles of AlCl_3

[tex]\\ \tt\hookrightarrow \dfrac{352}{133}=2.64mol[/tex]

Now

[tex]\\ \tt\hookrightarrow 4.2=\dfrac{2.64}{V}[/tex]

[tex]\\ \tt\hookrightarrow V=0.62L[/tex]

Answer: 2510

Explanation: Hope this Helps

Answer:

A continuation of what?

Explanation:

Answer:

two daughter cell and chromosome produce a haploid

Answer:

There are 12 atoms of hydrogen.

Explanation:

In 6H₂O there are 6 molecules of water. It has 2 hydrogens in each one. You multiply 2 by 6 and get 12 atoms of hydrogen in total.

Answer:

Third option

Explanation:

The answer is the third option or "Yes, all of the food consumed by humans is plants or gets energy from plants, and plants produce their own food through photosynthesis." Photosynthesis is the process plants use to obtain their own food. Humans do depend on photosynthesis because not only humans eat plants, but animals. Some animals are herbivores which means they only eat plants. If plants cannot create their own food using photosynthesis, then the plant dies. Neither the human nor the animal can eat that plant.

Many animals rely on plants to eat and if all plants cannot perform photosynthesis, then the animals cannot eat. Us humans eat animals which means if the plants die, the animals who eat the plants die, and then humans die. Humans heavily rely on photosynthesis, so the answer is the third option.

Hope this helps.

Yes, all of the food consumed by humans is plants or gets energy from plants, and plants produce their own food through photosynthesis. Therefore, the correct option is option C.

The light-dependent processes and the light-independent reactions, also referred to as the Calvin cycle, are the two primary stages of photosynthesis. The thylakoid membrane of the chloroplasts in plant cells is where the first stage, the light-dependent processes, take place. In this phase, the pigments chlorophyll and other chloroplast-based pigments absorb solar energy and transform it into chemical energy in the form of ATP and NADPH (nicotinamide adenine dinucleotide phosphate). These chemicals are necessary to drive the following phase of photosynthesis.

Therefore, the correct option is option C.

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Based on factors affecting reaction rate , the time for colouring at cold temperature 5°C will be 8.00 minutes.

The rate of a reaction increases with increase in temperature.

The increase in reaction rate is due to the increase in the kinetic energy of the molecules reacting.

A low temperature lowers reaction rate.

Thus, at cold temperature 5°C, the time for food colouring will be less than at room temperature.

Therefore, the time for colouring at cold temperature 5°C will be 8.00 minutes.

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Answer:

C. He takes a rough sketch and uses his own artistic skill to draw it more clearly

Martin works in a crime lab, and his job is to create the finished sketches of each crime scene. So, He uses computer programs to create a detailed representation of the scene, which is option A.

Martin's job as a crime scene sketch artist most likely entails using specialized computer programs to create detailed and accurate representations of the crime scenes. These programs allow him to accurately depict the dimensions, measurements, and key features of the crime scene. It provides a more precise and professional output compared to traditional hand-drawn sketches. The correct answer is option A.

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Explanation:

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When a coiled spring is released, the type of energy transfer that occurs is from potential energy to kinetic energy. When the spring is compressed and coiled, it stores potential energy due to the deformation of its structure.

The potential energy is in the form of elastic potential energy. As soon as the spring is released, it starts to expand, and this potential energy is converted into kinetic energy as the spring gains velocity and starts moving. At the maximum expansion (when the spring reaches its natural length), all the potential energy is converted into kinetic energy. The kinetic energy will continue to drive the motion of the spring until it comes to a stop or transfers its energy to another object or system.

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[tex]\bold{\huge{\blue{\underline{ Answer }}}}[/tex]

We have ,

[tex]\sf{ CaCl2 + K2CO3 \:gives \:CaCO3 + KCl }[/tex]

Let's balance it

On reactant side,

On product side,

[tex]\sf{ CaCl2 + K2CO3 \:gives\: CaCO3 + 2KCl }[/tex]

Double Displacement reaction :-

Answer:

•Endothermic and exothermic reactions can also be identified through observation. What might you observe that would help you identify a reaction as endothermic or exothermic?

By comparing the energy used when bonds in the reactants are broken with the energy released when bonds in the products are formed, you can determine whether a chemical reaction releases energy or absorbs energy overall. ... Chemical reactions that absorb (or use) energy are called endothermic.

Explanation:

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Answer:

○ Endothermic reaction - a chemical reaction that absorbs energy from the surrounding environment  “en-“ means in – it takes heat in – feels cold

○ Exothermic reaction - a chemical reaction that releases energy into the environment “exo-“ means out – sends heat energy out – feels warm or hot

Explanation:

Answer:

5.3⋅10 - 23 g

(-23 has to be small numbers above)

According to stoichiometry and molar mass concept, there are 55.34 g of oxygen in 152.21 grams of CO₂.

Molar mass of a compound or a molecule is defined as the mass of the elements which are present in it.The molar mass is considered to be a bulk quantity not a molecular quantity. It is often an average of the of the masses at many instances.

The molecular mass and formula mass are used as synonym for the molar mass.It does not depend on the amount of substance which is present in the sample.It has units of gram/mole.

Molar masses of an element are given as relative atomic masses while that of compounds is the sum of relative atomic masses which are present in the compound.

According to stoichiometry , if 44 g of carbon dioxide has 16 g of oxygen then, 152.21 g of carbon dioxide will have 152.21×16/44=55.34 g.

Thus there are 55.34 g of oxygen in 152.21 g of CO₂.

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The postulates in John Dalton's atomic theory which later became robust knowledge is that some scientists found that some atoms of a particular element have different number of neutrons.

These are substances which can't be broken down into smaller parts and consists only of atoms that all have the same numbers of protons in their nuclei.

Atoms of a particular element must have the same number of protons but can have different numbers of neutrons which makes them unique.

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Answer:

The answer is 60 grams of hydrogen.

Explanation:

Assuming hydrogen is a non-limited substance, we can calculate the number of mols of nitrogen that are used.

Molar mass of N = 14 grams/mole

280g of N / (14 g / mol) = 20 mols of N

They react in a 1 to 3 ratio. For every 1 nitrogen atom, there are 3 hydrogen atoms.

The molar mass of hydrogen is 1 g / mol.

Because we have 20 mols of Nitrogen and we know we need three times the amount of hydrogen as we do nitrogen, there must be 60 mols of hydrogen.

60 * 1 = 60

The answer is 60 grams of hydrogen.

Organic molecules can be defined as carbon-containing molecules found in living things.

They are chemical compounds that are mainly made up of carbon atoms.

Therefore, we can conclude that the organic molecules are those that come from living beings, that is, they are compounds of biological origin, which contain carbon.

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Answer:

The answer is in my attachment

Explanation:

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Answer:

pls brain list me :(

Explanation:

Friction. Friction

Answer:

12. 5

11.

10

10

15. 7

14. 11

2

=

16

16

18. 3

+

11

17

3

4

co

loo

8

Step-by-step explanation:

12. 5

11.

10

10

15. 7

14. 11

Answer B

Explanation:

trust

(a)

Heptane is the limiting factor. as O2 can be found in air.

(b)

balanced equation: C7H16 + 11 O2 --> 7 CO2 + 8 H2O

moles of O2= mass/ mr

moles of O2= 25000/32

moles of O2 = 781.25 moles

According to molar ratio:  

11 : 7

moles of carbon dioxide:

(781.25/11) * 7

497.16 moles

using mass = moles * mr

mass of CO2 = 497.16  * 44 = 21875.04 g -- this is mass of CO2

Answer:

thermal energy is your correct answer mark me brainly

Answer:

o.99

Explanation:

Answer:

8, they have a full valence shell

Explanation:

Considering the given reaction, 109 g of Fe are needed to generate 5.25 g of H₂.

Stoichiometry refers to the relationship between the quantities of reactants and products before, during, and following chemical reactions.

3 Fe + 4 H₂O ⇒ 4 H₂ + Fe₃O₄

We will consider the following relationships.

[tex]5.25gH_2 \times \frac{1molH_2}{2.02gH_2} \times\frac{3molFe}{4molH_2} \times\frac{55.85gFe}{1molFe} = 109gFe[/tex]

Considering the given reaction, 109 g of Fe are needed to generate 5.25 g of H₂.

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Answer:

309 liters

Explanation:

A wonderful constant within the gas laws states that 1 mole of any gas occupies 22.4 liters at STP.  ANY gas.  Make that into a conversion factor you can use at your next social gathering if you want to annoy some friends:  

(22.4L/1 mole) for any gas at STP.

Use that factor to find the answer:

(13.8 moles)(22.4L/1 mole) = 309 liters

Answer:

A baseball speeds up as it falls through the air.

Yes.  Forces on the balloon are unbalanced.

The balloon is speeding up, so we know that the downward force

of gravity is stronger than the upward force of air resistance.

A soccer ball is at rest on the ground.

No. The ball is not accelerating, so we know that the forces on it

are balanced.

The downward force of gravity on the ball and the upward force

of the ground are equal.

An ice skater glides in a straight line at a constant speed.

No. The skater's speed and direction are not changing, so he is not

accelerating.  That tells us that the forces on him are balanced.

A bumper car hit by another car moves off at an angle.

Yes.  The direction in which the car was moving changed.

That's acceleration, so we know that the forces on it are unbalanced,

at least at the moment of impact.

A balloon flies across the room when the air is released.

Yes.  The balloon was not moving. But when the little nozzle was

opened, it started to zip around the room.  So its speed changed.

And, as it goes bloozing around the room, its direction keeps changing too.

There's a whole lot of acceleration going on, so we know the forces on it

are unbalanced.