A tow truck pulls a 1,100 kg car and accelerates at a rate of 3 m/s2. What is the force of the tow truck?

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The mas.s of evaporating dish is 21.345g B.

Answer:

Explanation:

Deforestation has an adverse affect on air by reducing the amount of oxygen and increasing the amount of carbon dioxide as well as contributing to global warming.

Long-term (months or years) high blood sugar levels can cause irreversible harm to organs such the kidneys, blood vessels, eyes, nerves, and nervous system. Speak with your doctor or the diabetes care team if you frequently have hyperglycemia.

If left untreated, having excessive blood sugar levels for an extended length of time might lead to major health issues. In addition to raising the risk of heart disease, stroke, kidney illness, vision issues, and nerve issues, hyperglycemia can harm the blood arteries that provide blood to essential organs.

A high-fat, high-calorie, and high-cholesterol diet

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If we add more magnesium to the reaction, the reaction speed will increase.

The chemical reaction shown is a single-displacement reaction, also known as a single-replacement reaction. In this type of reaction, one element replaces another element in a molecule, producing a new compound and a different element.

In the given reaction, magnesium (Mg) reacts with sulfuric acid (H₂SO₄) to produce magnesium sulphate (MgSO₄) and hydrogen gas (H₂). This can be represented by the following balanced chemical equation:

Mg + H₂SO₄ → MgSO₄ + H₂

This is because the amount of reactant determines the number of reactions that can occur. If the amount of magnesium is increased, more magnesium atoms are available for the reaction with sulfuric acid, leading to a higher rate of reaction.

However, this increase in reaction rate is only valid up to a certain point, after which further addition of magnesium will not lead to an increase in rate of reaction. This is because other factors such as the concentration of sulfuric acid and the temperature of the reaction may become limiting factors that can no longer be compensated by adding more magnesium.

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Answer:

CH2O is formaldehyde a covalent compound and its intermolecular forces are week

KCl is an ionic compound formed by electrostatic force of attraction between positive and negative charge. Ionic compounds also exists in three dimensional crystal lattic that is why intermolecular forces in KCl is stronger.

Moreover melting point of KCl is higher than CH2O

Explanation:

B. Giving up is NOT an element in developing expertise in a field.

The answer is option B.

Dynamic examine Modules work with the aid of continuously assessing our performance and interest, then the use of data and analytics to provide personalized content material in actual time to enhance standards that target our unique strengths and weaknesses.

It encourages you to preserve alongside your learning journey, as we haven't but reached the very last vacation spot.

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Answer:

heat is absorbed from the surrounding......

Answer:

so here is the answer

Explanation:

Kinetic is the answer.

Explanations

Given the following

Mass of potassium carbonate = 22.5grams

Determine the moles of potassium carbonate

Moles of potassium carbonate = mass/molar mass

22.5/138.205|

= 0.1628moles

Since the precipitate formed is aluminum hydroxide, hence the mole of precipitate formed if 3moles off K2CO3 produce 2moles of Al(OH)3 is given as:

Hence the moles of dried precipitate should be formed

Answer:

a . eight tenths of her cookies

Explanation:

Let the total number of Lakesha's cookies be represented by x.

So that;

She gave three tenths to Bailey = \(\frac{3}{10}\) of x

                                                     = \(\frac{3x}{10}\)

She gave five tenths to Helen = \(\frac{5}{10}\) of x

                                                  = \(\frac{5x}{10}\)

Fraction of Lakesha's cookies given away = \(\frac{3x}{10}\) + \(\frac{5x}{10}\)

                                                      = \(\frac{3x+ 5x}{10}\)

                                                      = \(\frac{8x}{10}\)

Thus, the fraction of cookies given away by Lakesha is \(\frac{8}{10}\).

Some types of solids that are insoluble in water are:

Many solids are insoluble in water, meaning they do not dissolve in water to a significant extent. Here are some examples of common solids that are generally insoluble in water:

Metals: Most metals, such as gold, silver, platinum, and copper, are insoluble in water.

Non-Metallic Elements: Many non-metallic elements, such as carbon (in the form of graphite or diamond), sulfur, phosphorus, and iodine, are insoluble in water.

Metal Oxides: Some metal oxides, particularly those of less reactive metals, are insoluble in water. Examples include aluminum oxide (Al2O3), iron(III) oxide (Fe2O3), and lead(II) oxide (PbO).

Metal Carbonates: Most metal carbonates are insoluble in water. Examples include calcium carbonate (CaCO3), lead(II) carbonate (PbCO3), and copper(II) carbonate (CuCO3).

Metal Sulfides: Many metal sulfides are insoluble in water. Examples include lead(II) sulfide (PbS), silver sulfide (Ag2S), and mercury(II) sulfide (HgS).

Insoluble Salts: Certain salts have limited solubility in water. Examples include silver chloride (AgCl), lead(II) iodide (PbI2), and calcium sulfate (CaSO4).

It's important to note that while these solids are generally insoluble in water, they may exhibit some solubility to a small extent. The solubility of a solid in water can vary depending on factors such as temperature, pressure, and the presence of other solutes.

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Answer:

14.9 mol

Explanation:

To find the number of moles in a given mass of a sample of sodium chloride (NaCl), we can multiply the number of grams in the sample by the molar mass of sodium chloride, which is 58.44 g/mol.

871 g × (1 mol / 58.44 g)

= 871/58.44 mol

≈ 14.9 mol

Note that we rounded to 3 significant figures in the final answer because that is how many significant figures were given in the mass measurement of the sodium chloride sample.

6.02 x \(10^{20\) formula units of MgCl₂ is equal to 0.1 moles of MgCl₂.

To convert formula units of MgCl₂ to moles of MgCl₂, we need to use Avogadro's number, which relates the number of formula units to the number of moles.

Avogadro's number (NA) is approximately 6.022 x 10^23 formula units per mole.

Given that we have 6.02 x 10^20 formula units of MgCl₂, we can set up a conversion factor to convert to moles:

(6.02 x 10^20 formula units MgCl₂) * (1 mol MgCl₂ / (6.022 x 10^23 formula units MgCl₂))

The formula units of MgCl₂ cancel out, and we are left with moles of MgCl₂:

(6.02 x 10^20) * (1 mol / 6.022 x 10^23) = 0.1 mol

Therefore, 6.02 x 10^20 formula units of MgCl₂ is equal to 0.1 moles of MgCl₂.

It's important to note that this conversion assumes that each formula unit of MgCl₂ represents one mole of MgCl₂. This is based on the stoichiometry of the compound, where there is one mole of MgCl₂ for every one formula unit.

Additionally, this conversion is valid for any substance, not just MgCl₂, as long as you know the value of Avogadro's number and the number of formula units or particles you have.

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Answer:

3.

Explanation:

potassium

bromine

oxygen

When there is an increase in an activity, like sales or manufacturing, the overall amount of an expense, known as a fixed expense, does not change.

Thus, Normal definitions typically include the phrase within a relevant or appropriate range of activity since a change is likely to take place at fixed expense either an exceptionally high or low volume or expense.

Of course, the rent will probably need to adjust if sales quadruple or fall to 20% of the average level. However, as the extreme circumstances are outside of the relevant range for short-term analysis, the current rent of $2,000 is regarded as a fixed expense.)

The following are some instances of costs that are probably set within a fair range of retail sales, The yearly pay for the shop manager.

Thus, When there is an increase in an activity, like sales or manufacturing, the overall amount of an expense, known as a fixed expense, does not change.

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Answer:

Explanation:

a) AgCl(s) in 0.025 M NaCl

Equation:  AgCl(s) ⇄ Ag⁺ (aq) + Cl⁻ (aq)

Initial conc :    S            O               O

equili conc :    O            S                S

                  NaCl(s) ⇒ Na⁺ (aq) + Cl⁻ (aq)

Initial conc :  0.025      0           0

equili conc :     0          0.025    0.025

Therefore the concentration:  Ag⁺ = 6.4 * 10^-9 M,  Cl⁻  = 0.025 M

attached below is the detailed solution of the

To find moles when given the molar mass, you can use the concept of molar mass as a conversion factor.Molar mass represents the mass of one mole of a substance, expressed in grams per mole (g/mol).

To calculate moles, divide the given mass of the substance by its molar mass. The equation is:

moles = mass / molar mass

For example, if you have 56 grams of carbon dioxide (CO2) and want to find the number of moles, you need to know the molar mass of CO2, which is approximately 44 g/mol. Using the equation above:

moles = 56 g / 44 g/mol

moles ≈ 1.27 mol

Therefore, there are approximately 1.27 moles of carbon dioxide in 56 grams.

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The scientific notation of  0.00212  is 2.12 × 10⁻³.

Scientific notation is a way of expressing numbers that might be too big or too small to be quite simply written in decimal shape. it is able to be known as clinical shape or popular index shape, or widespread shape within the united kingdom.

Scientific notation is a way of writing very large or very small numbers. various is written in medical notation whilst various among 1 and 10 is increased by means of electricity of 10. as an instance, 650,000,000 can be written in clinical notation as 6. five ✕ 10^eight.

The number one purpose for changing numbers into medical notation is to make calculations with unusually massive or small numbers less cumbersome. due to the fact zeros are now not used to set the decimal point, all of the digits in a variety of scientific notation are giant.

Calculation:-

Scientific notation of 0.00212 = 2.12 × 10⁻³

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Answer:

1 - Gravitational.

2 - Normal

3 - Tension

4 - Frictional

5 - Centripetal

Explanation:

1. If you drop something, gravity pulls it down to the Earth, So falling towards the earth is gravity.

2. Pushing back on another object is normal, Newton's law: Every action has an equal and opposite reaction.

3. When two forces are pulled on opposite sides, the object must stretch which creates tension. Think of a rubber band. If it is pulled more than the object can stretch, it will tear. Tensile strength refers to how much pulling force an object can withstand before it tears.

4. When objects or molecules rub against other objects or molecules they create friction.

5. Last two options go together.

The number of grams in 6.02 × 10²³ formula units of aluminium chloride is 101.96g.

The mass of a substance can be calculated from the formula units by dividing the number of formula units by Avogadro's number.

According to this question, there are 6.02 × 10²³ formula units of aluminum oxide. This means that;

no of moles = 6.02 × 10²³ ÷ 6.02 × 10²³

no of moles = 1 mole

molar mass of aluminium oxide = 101.96g/mol

mass of aluminum oxide = 101.96g/mol × 1 mole = 101.96g

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The options that affect the amount that the freezing point is lowered by the addition of the solute include :

The increasing of a solvent's boiling point as a result of the addition of a solute is known as boiling point elevation. Similar to freezing point depression, adding a solute lowers the freezing point of a solvent. In actuality, a solvent's freezing point drops as its boiling point rises.

Any solvent's freezing point will be lowered by the presence of a solute; this action is known as freezing-point depression. The fact that the solute is present in the liquid solution but not in the pure solid solvent is crucial to understanding this phenomenon.

This includes the compound being ionic or the solubility of the solvent.

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Answer:

Beer's law (sometimes called the Beer-Lambert law) states that the absorbance is proportional to the path length, b, through the sample and the concentration of the absorbing species, c: A α b · c. The proportionality constant is sometimes given the symbol a, giving Beer's law an alphabetic look: A = a · b · c.

Explanation:

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The freezing point of the solvent in a solution changes as the concentration of the solute in the solution changes (but it does not depend on the identity of either the solvent or the solute(s) particles (kind, size or charge) in the solution).

Generally, pressures lower than 1 atmosphere lower the temperature at which a substance freezes, but for water, a higher pressure gives a lower freezing point. The force from a pressure change figures into the molecular forces already at play in a substance.

Answer:

B. 50%

Explanation:

First we convert the given masses of the reactants into moles, using their respective molar masses:

0.893 moles of CO would react completely with (0.893 * 2) 1.786 moles of H₂. As there are more H₂ moles than that, H₂ is the reactant in excess and CO is the limiting reactant.

Now we calculate how many CH₃OH moles would have been formed if all CO would have been consumed:

Then we convert 0.893 moles of CH₃OH into grams, using its molar mass:

Finally we calculate the percent yield:

Paramecia sweep food into mouthlike openings and a pine tree carriers out photosynthesis. These describe a way that an other-feeder gets food. The correct option is option B,D.

Filter feeders are a subclass of animals that eat by sifting food particles and suspended materials from water, often by running the water through a specially designed filtering apparatus. Baleen whales, clams, krill, sponges, various fish (including some sharks), and krill are just a few species that adopt this technique of eating. Paramecia sweep food into mouthlike openings and a pine tree carriers out photosynthesis. These describe a way that an other-feeder gets food.

Therefore, the correct option is option B,D.

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Maddy made the error of multiplying by 10 rather than 100, which produced an answer that was 10 times off in the conversion of units.

The work of Maddy is flawed. We must multiply the value in grammes by 100 to convert it to centigrammes. Maddy gave the wrong answer of 7.5 cg by multiplying the weight in grammes by 10 rather than 100.

In order to convert 0.75 grammes to centigrammes, use the following formula:

100 cg/g x 0.75 g equals 75 cg

Consequently, 0.75 grammes is 75 centigrammes. Maddy made the error of multiplying by 10 rather than 100, which produced an answer that was 10 times off.

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Answer:

Two positive aspects of using methane recapture systems are able to generate significant electricity. Another benefit is that the process of anaerobic digestion creates heat that can be used to warm buildings where animals are kept

Answer:  The correct answer is;

Two positive aspects of using methane recapture systems include lowering the impact on greenhouse gasses and the production of energy. Methane is a very potent greenhouse gas that is contributing to global warming. As a result, the recapturing process reduces the methane impacts of global warming by reclaiming and reusing the gas for other purposes. Recaptured methane can be stored and used to generate electricity or used as fuel to power updated vehicles and other engines on the farm. The overall benefits from this combination are reducing impacts causing global warming and lower the cost of electricity or fuel on the farm.

Explanation:  This answer has been confirmed correct.

Answer:

0.318611987 cubic meters

Explanation:

I hope I remembered to do this right, though I'd wait for a second response just in case.

Answer:

B

Explanation:

There's a law (very important) in chemistry.

The conservation of mass law states:

The same amount of matter exists before and after the change—none is created or destroyed

The reactants are on the left side of the equation, or the things that get added together to make new products.

Due to this law, there must be the same amount of each atom on both the product, and reactant side.

Thus, your answer would be 'B' as there is the same amount of both types of atoms.