What do you know about plants cell and animal cells?
restate the answer and answer it

Answer:

Explanation:Statement number two and three are correct.Others are incorrect

Here we have been given statements relating to valence bond theory and lewis theory.

The 1st statement is incorrect.Because we use the valence electrons for bonding.

Valence bond theory is based on the partial overlapping.Therefore this statement is incorrect.

The second statement is correct.

Valence bond theory can make predictions about geometrical parameters like bond angle,bond length etc

Third statement is correct.

Lewis theory explains only electron dot structures.

Fourth statement is incorrect.

Valence bond theory explains bond formation due to overlapping between different molecules and the sharing of electrons.

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Answer:

C

Explanation:

El Niño and La Niña are opposite phases of a natural climate pattern across the tropical Pacific Ocean that swings back and forth every 3-7 years on average. 

The option which best describes one characteristic of both El Nino and La Niña is that both occur in the Pacific Ocean

Generally, it has been proven true that El Niño is characterized by warm ocean temperatures in the Equatorial Pacific

El Niño simply refers to the warm phase of the El Niño–Southern oscillation

In conclusion, the only true option which best describes one characteristic of both El Nino and La Niña is that both occur in the Pacific Ocean

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Answer:

Explanation:

assuming there is no friction

fnet=ma

2,000 kg*3m/s=6,000 N

Answer:

Avogadro's law, a statement that under the same conditions of temperature and pressure, equal volumes of different gases contain an equal number of molecules.

Answer:

6.02 x 10^23 moles of any substance is one mole.

Explanation:

Answer:

dog

Explanation:

cats hide and break stuff pigs will probally stay outside all day and i ove dogs

I prefer a pig

Benefits of having a pig

- you can eat them

- they taste good

- they have bacon

- Richard

- they are good to eat

- they taste very good because of the bacon

- you can cook them

- they are good cooked

Answer:

There are four types of consumers: omnivores, carnivores, herbivores and decomposers. Herbivores are living things that only eat plants to get the food and energy they need. Animals like whales, elephants, cows, pigs, rabbits, and horses are herbivores. Carnivores are living things that only eat meat.

Explanation:

It is true that the  principles used in handling a Hazardous Material (HazMat) does apply to  Chemical, Biological, Radiological, Nuclear, and Explosive (CBRNE) incidents.

The term hazardous chemicals refers to those substances that are able to cause harm to fauna and flora.

Thus, It is true that principles used in handling a Hazardous Material (HazMat) does apply to  Chemical, Biological, Radiological, Nuclear, and Explosive (CBRNE) incidents.

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Answer:

Frequency is 2Hz

Explanation:

Based on the Hund's Rule, the three electrons in a 2p orbital are arranged as shown in option C.

The term orbital refers to a region in space where there is a high probability of finding the electron. We know that an electron in an atom could be defined by the use of four sets of quantum numbers which are;

Hund's rule states that, electrons occur singly before pairing takes place. In this case, we can see that the only arrangement that obeys the Hund's Rule is option C.

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Answer:

the answer to the question is X3Y2

Answer:

9.90

Explanation:

Given [H+] = 1.25 x 10^-10 M, we can calculate the pH using the formula:

pH = -log10([H+])

pH = -log10(1.25 x 10^-10)

Using logarithmic properties:

pH = -log10(1.25) - log10(10^-10)

Since log10(10^-10) is equal to -10:

pH = -log10(1.25) - (-10)

pH = -log10(1.25) + 10

Now, evaluating the logarithm using a calculator:

pH = -0.0969 + 10

pH = 9.9031

Therefore, the pH of the solution with [H+] = 1.25 x 10^-10 M is approximately 9.9031. Rounding it to two decimal places, the pH is approximately 9.90.

josh has 10 g of element a and 10 g or element b. when finished with the experiment, josh has 20 g of element a and b combined. This demonstrates ' Law of conservation of mass'.

In a closed system, mass cannot be created or destroyed, but it can be changed from one form to another. Thus, mass of a system remains same before and after the reaction.

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2.1 moles of \(H_2O\) will have a mass of 37.8 grams.

The number of moles a substance contains and the mass of the substance are related by the following equation:

Mole = mass/molar mass

In other words, the mole of a substance is the ratio of the mass of the substance and its molar mass.

Rearranging the equation:

Mass = mole x molar mass.

In this case, we want to find the mass of 2.1 moles of water. The molar mass of water can be calculated as follows:

\(H_2O\) = (1 x 2) + 16

       = 18 g/mol

Mass of 2.1 moles of water = 2.1 x 18

                                            = 37.8 grams

In other words, 2.1 moles of water will have a mass of 37.8 grams.

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Answer:

The extent of carbon emission to the atmosphere will reduce thereby decreasing the amount of carbon that is released into the atmosphere in the carbon cycle if we all use bicycles instead of driving around our neighborhood.

If we choose to turn our appliances off, less coal is extracted and burnt to generate energy thereby also reducing the extent of carbon dioxide emission.

Explanation:

The carbon cycle may be defined as all the sequence of processes that involve the interconversion of carbon compounds to various species in nature. It refers to process such as; incorporation of carbon dioxide into living tissue by photosynthesis and ingestion of organic matter by animals, its return to the atmosphere through respiration, the decay of dead organisms, and the burning of fossil fuels.

Fossil fuels are generally a very important source of energy. Both gasoline and coal are fossil fuels. The disadvantage of fossil fuels is that the use of fossil fuels increases the concentration of CO2 gas returned to the atmosphere as part of the carbon cycle. This increased CO2 level in the atmosphere leads to greenhouse effect and global warming.

If I and all my neighbors decide to turn off our appliances when they are not in use, less energy is consumed and less coal is burnt for energy thereby reducing the amount of carbon dioxide that is emitted back to the atmosphere in the carbon cycle.

Similarly, if we all ride bicycles while running errands around our neighborhood, less gasoline is burnt as fuel and less carbon dioxide is emitted back into the atmosphere in the carbon cycle.

If less carbon dioxide is emitted into the atmosphere, less carbon dioxide will be available for photosynthetic organisms to take in and this may affect the primary productivity along the food chain. Since plants act as a carbon dioxide sink nature, less carbon dioxide emission will imply less photosynthesis

Answer:

looks like separating

Explanation:

cutting the fabric with scissors

For every one mole of glucose, there are six moles of carbon dioxide.

We have the balanced equation (without state symbols):

6H₂O + 6CO₂ → C₆H₁₂O₆ + 6O₂

Thus, 6 moles of carbon dioxide are required to fully produce 1 mole of glucose.

Here, we got 2.75g of carbon dioxide, and we need to convert it into moles.

Carbon dioxide has a molar mass of 44 g/mol.

So here, there exist

2.75g ÷ 44g/mol = 0.0625mol

Since there are two moles of CO₂, we can produce 2/6⋅1 = 1/3 moles of glucose (C₆H₁₂O₆).

We need to find the mass of glucose formed, so we multiply the number of moles of glucose by the molar mass.

Glucose has a molar mass of 180.156g/mol.

So here, the mass of glucose produced is:

1/3mol × 180.156 g/ mol ≈ 60g to the nearest whole number.

So, approximately 60 grams of glucose will be produced.

Complete Question:

6H2O + 6CO2 --> C6H12O6 + 6O2 How many grams of Glucose are made if you start with 2.75g of CO2?

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According to the concept of significant figures,0.002  molecules of CO₂ per hundred molecules of air  are expressed as a concentration as 2 parts per thousand .

Significant figures are used for establishment  of a number which is presented in the form of digits. These digits give a meaningful representation  to the numbers.

The significant figures are the significant digits which convey the meaning according to the accuracy. These provide precision to the numbers and hence are called as significant numbers.There are rules for counting significant figures which are as follows:

1)All non-zero digits are significant .

2)All zeroes which occur between non-zero digits are significant.

3)All zeroes to the left and right of  a non-zero digit are not significant.

4) All zeroes on right  of decimal are significant if a non-zero number follows them.

5)All zeroes on right side of non-zero digit are significant.

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Answer:

See below

Explanation:

The common formula of the same alkene series is CnH2n, where n is the quantity of atoms of carbon. Owing to the hydrocarbons of alkenes with at least one double carbon relation, the alkene-like sequence starts with ethen C2H4.

Hope this helps.

The general formula for the homologous series which includes ethene is alkenes.

Alkenes

They are homologous series with the general formula CxH2x.

Where:

x = number of carbon atoms.

Examples are methene with one carbon atom: CH2

Ethene with 2 carbon atoms: C2H4

Propene with 3 carbon atoms: C3H6

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Hot spot volcano is the type of volcano which is formed at a weak spot in

the middle of a plate.

Hot spot volcano is an area in the Earth crust which is characterized by large

amount of heat flow in the area due to the volcanic activity. Hot spot  

volcano is formed at the middle of the plate as against junctures in which

other types are formed.

The weak spot is what gives rise to the unusual heat flow which makes hot

spot volcano most appropriate.

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(c) Henry's constant. Henry's law states that the solubility of a gas in a liquid is directly proportional to the partial pressure of the gas above the liquid. Therefore, the concentration of the solute in the liquid media is directly related to the concentration of the solute in the gas phase.

It is named after the English chemist William Henry, who discovered the principle behind the constant. Henry's constant is used to describe the solubility of gases in liquids, and it is an important parameter in environmental chemistry and chemical engineering.

The value of Henry's constant depends on the properties of the solute, the solvent, and the temperature and pressure conditions.

The constant of proportionality is known as Henry's constant.

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Correct number to balance the equation: ___KClO3 → 2KCl 3O2 is "2".

We obtain KCl and oxygen gas from the breakdown of potassium chlorate (KClO3).

1.5 moles of O2 gas and one mole of KCl are produced from one mole of KClO3.

Therefore, the response will be:

KCL)3 - - > KCL + 3/2 O2

The entire equation will be multiplied by two in order to transform the fractional coefficient to a whole number.

2X [ KCLO3 - - > KCL + 3/2 O2 ]

A balanced equation will therefore be:

2KCLO3 - - > 2KCL + 3 O2

KClO3's coefficient is therefore "2".

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Gas that has increased in our atmosphere from 300 parts to 410 parts since 1950 is : 2) carbon dioxide (CO₂). It first exceeded 300 parts per million threshold in the 1950s and today it is over 410 parts per million.

The concentration of carbon dioxide in the atmosphere is currently nearly 412 parts per million. This shows a 47 percent increase since the beginning of the Industrial Age when the concentration was nearly 280 ppm.

The atmospheric level of carbon dioxide has been rising since the 1960's. In 2021, atmospheric carbon dioxide levels reached 416.45 parts per million in comparison to 1960 levels which was 316.91 parts per million.

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We can use the formula:

M1V1 = M2V2

where M1 is the initial molarity, V1 is the initial volume, M2 is the final molarity, and V2 is the final volume.

In this case, we know:

M1 = 12.0 M

V1 = ?

M2 = 0.100 M

V2 = 500.0 mL = 0.500 L (since 1 mL = 0.001 L)

We can rearrange the formula to solve for V1:

V1 = (M2V2) / M1

Substituting the values we know, we get:

V1 = (0.100 M)(0.500 L) / 12.0 M

V1 = 0.00417 L = 4.17 mL

Therefore, we need to measure 4.17 mL of 12.0 M hydrochloric aqueous solution and add it to 500.0 mL of water to prepare 500.0 mL of a 0.100 M diluted solution.

Two atoms that are isotopes of one another must have a different number of Neutrons. Except for basic hydrogen, every atom's nucleus contains a neutron, a subatomic particle.

Isotopes are atoms of the same element with the same number of protons, meaning that their atomic number does not change, but differing quantities of neutrons. They are found to have identical chemical properties because of their identical electrical configuration, yet they have different physical properties.

The name of the particle comes from the fact that it is electrically neutral and devoid of charge. The densest particles are neutrons.

Isotopes are members of the same family of elements as that element but have varying numbers of neutrons. The Periodic Table's atomic number of an element is determined by the number of protons it contains.

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Answer:

Photosynthesis occurs in two stages. During the first stage, the energy from sunlight is absorbed by the chloroplast. Water is used, and oxygen is produced during this part of the process.

Explanation:

Answer:

Chloroplast absorbs the energy emitted by the Sun.

_____________________________________________________

Context:

Photosynthesis:

The complex process by which carbon dioxide, water, and certain inorganic salts are converted into carbohydrates by green plants, algae, and certain bacteria, using energy from the sun and chlorophyll.

Chloroplast:

A plastid containing chlorophyll.

Chlorophyll:

The green coloring matter of leaves and plants, essentially to the production of carbohydrates by photosynthesis, and occurring in a blush-black form, C55J72MgN4O5 (chlorophyll a), and a dark-green form, C55H70MgtN4O6 (chlorophyll b).

Sun:

The star that is the central body of the solar system, around which the planets revolve and from which they receive light and heat: its mean distance form earth is about 93 million miles (150 million km), its diameter about 864,000 miles (1.4 million km), and it's mass about 330,000 times that of earth; its period of surface rotation is about 26 days at its equator but longer at higher latitudes.

Explanation:

There are two main phases in photosynthesis:

depending on light stage

Clause Cycle (AKA the dark stage or the light-independent stage)

In the light-dependent stage, ATP and NADPH are produced using photons, or light energy. Oxygen molecules start to form during this stage as a byproduct.

Utilizing the materials produced during the light-dependent stage, the Calvin cycle fixes CO2 molecules to produce carbohydrates (sugars). This stage can repeat itself indefinitely since RuBP, the initial chemical required for the stage to go further, also serves as its byproduct.

Answer:

0.694 cents per second

Explanation:

25x100=2500 cents per hour, 2500/60 = 41.67 per minute and 41.67/60=0.694 cents per second