If a 2,000-kilogram car accelerates at a rate of 3 meters
per second squared, what is the force the engine applied
to the car?
Help pleaseeee!!!

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:

D = 5.27 g

Explanation:

The molar mass of Li2SO4 is 2·7 + 32  + 64 = 110

18 g Li2SO4 contains 18/110 = 0.1636 mole Li2SO4, or 0.32727 mol Li

This allows to prepare 0.1091 mol Li3P

1 mole Li3P weighs 3·7 + 31 = 52 g/mol

0.1091 mol Li3P weighs 52 g · 0.1091 =  5.27 g

Answer:

The balanced chemical equation will be "\(NO_{2}+O\rightarrow NO+O_{2}\)".

Explanation:

The given equation is:

\(2NO_{2}\rightarrow 2NO+O_{2}\)

Step 1:

\(2NO_{2}\rightarrow NO+O\)...(equation 1)

Step 2:

\(NO_{2}+O\rightarrow NO+O_{2}\)...(equation 2)

On adding "equation 1" and "equation 2", we get

⇒  \(NO_{2}+NO_{2}+O\rightarrow NO+O+NO+O_{2}\)

⇒  \(2NO_{2}\rightarrow 2NO+O_{2}\)

The second step:

⇒  \(NO_{2}+O\rightarrow NO+O_{2}\)

A) The chemical symbol for the ion is Fe+

B) It has 20 electrons in total, and there are 6 3p electrons in the ion.

C) There are 6 electrons present in the 3p orbital.

The atomic cation with the given electron configuration is represented by the chemical symbol Fe+.

To determine the number of electrons in the ion, we need to count the electrons present in the electron configuration. In the given configuration, we can see that the 1s orbital has 2 electrons, the 2s orbital has 2 electrons, the 2p orbital has 6 electrons, the 3s orbital has 2 electrons, the 3p orbital has 6 electrons, the 3d orbital has 1 electron, and the 4s orbital has 1 electron. Adding up these numbers, we have:

2 + 2 + 6 + 2 + 6 + 1 + 1 = 20

Therefore, the ion has 20 electrons.

To determine the number of 3p electrons in the ion, we look at the 3p orbital. In this case, there are 6 electrons present in the 3p orbital.

In summary, the chemical symbol for the ion is Fe+, it has 20 electrons in total, and there are 6 3p electrons in the ion.

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Answer:

B. The reaction rate decreases.

Explanation:

Answer:

Yes it is. 0.34 kg = 340 g (Kilograms and grams)

Explanation:

When we convert from kg to grams we multiply by 1000 because kilo mean 1000.

0.34*1000= 340

If you accidentally add salt instead of sugar to a recipe, you can use vinegar to counteract the salty taste.

If you have added salt instead of sugar to a recipe, then you can try to remove the salt by adding a substance that will counteract its flavor. One such substance is vinegar, which is an acid and can help to neutralize the salty taste. Here are the steps to remove salt from a dish:

1. Remove as much of the salty liquid or sauce as possible.

2. Dilute the remaining sauce or liquid by adding more of the ingredients in the recipe, except for the salt

3. Taste the dish and add more sugar if needed.

4. If the dish is still too salty, add a little bit of vinegar.

5. Keep tasting the dish and adjusting the sugar and vinegar until it is no longer too salty.6. If the dish becomes too sweet, add more of the other ingredients to balance it out.

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Answer:

will be 9.7 Liters

Explanation:

Convex lenses refract light inward toward a focal point. Light rays progress through the edges of a convex lens and are bent most.

convex lenses are across in the middle. Rays of light that pass through the lens are conducted closer together (they converge). A convex lens is a meet lens. When parallel rays of light pass through a convex lens the refracted rays cross at one point called the principal focus.

. A convex lens is a connecting lens. When parallel rays of light pass through a convex lens the refracted rays merge at one point called the principal focus.

So we can conclude that Convex Lens. Concave Lens; It is known as a converging lens as light rays, when passed through this lens, tends to bend towards each other. It is known as a Convex Lens

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Answer:

\(E=2.85\times 10^{-23}\ J\)

Explanation:

Given that,

The frequency of light, \(f=4.3\times 10^{10}\ Hz\)

We need to find the energy of light. The formula for the energy is given by :

\(E=hf\) Where h is Planck's constant

Putting all the values of h and f, we get :

\(E=6.63\times 10^{-34}\times 4.3\times 10^{10}\\\\E=2.85\times 10^{-23}\ J\)

So, the energy of light is \(2.85\times 10^{-23}\ J\).

If the efficiency of a machine increases, it means that the machine is able to convert a higher percentage of its input energy into useful work output.

This could happen due to various factors, such as reducing friction, improving the design of the machine, or using more efficient components. The machine requires less energy input to perform the same amount of work. This could result in cost savings, reduced energy consumption, and lower environmental impact.

The output of the machine increases while the input remains constant. This could result in increased productivity, faster production rates, and improved performance. The wear and tear on the machine may decrease, as it is working more efficiently and experiencing less stress. This could result in longer machine life and reduced maintenance costs. Increasing the efficiency of a machine can have many positive effects, including cost savings, improved performance, and reduced environmental impact.

The complete question is

If the efficiency of a machine increases, what happen?

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Petroleum is a naturally occurring liquid mixture of hydrocarbons, which is usually referred to as crude oil. It is a non-renewable resource that is extracted from the ground by drilling wells.

Petroleum is a complex mixture of various components, and it is refined into different products for use in different industries. There are various products obtained from petroleum. These products include gasoline, diesel fuel, heating oil, jet fuel, kerosene, asphalt, lubricants, and petrochemicals. Each of these products has its own unique properties and uses.

1. Gasoline: Gasoline is the most commonly used petroleum product. It is a liquid fuel that is used in internal combustion engines in cars, trucks, and other vehicles. Gasoline is a mixture of various hydrocarbons that have been refined from crude oil.

2. Diesel Fuel : Diesel fuel is another liquid fuel that is obtained from petroleum. It is used in diesel engines in trucks, buses, and other heavy-duty vehicles. Diesel fuel is made up of hydrocarbons that are heavier than those in gasoline.

3. Heating Oil :Heating oil is a liquid fuel that is used to heat homes and buildings. It is similar to diesel fuel but is refined to have a higher boiling point.

4. Jet Fuel: Jet fuel is a type of kerosene that is used to power jet engines in airplanes. It is refined to have a low freezing point and a high energy content.

5. Kerosene: Kerosene is a liquid fuel that is used for lighting, heating, and cooking. It is similar to jet fuel but is refined to have a higher boiling point.

6. Lubricants: Lubricants are oils that are used to reduce friction between moving parts in engines and machinery. They are made from refined petroleum and can be used in a variety of applications.

7. Petrochemicals: Petrochemicals are chemicals that are derived from petroleum. They are used in a wide range of products, including plastics, synthetic fibers, rubber, and detergents.

Overall, petroleum is an important resource that is used to produce a wide range of products that we use in our daily lives. The products obtained from petroleum have a significant impact on the economy, transportation, and various industries.

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Answer:

what is this i dont know what kind of math this is

Answer:1.8 moles Fe and 2.7 moles CO2

Explanation:

Answer:

1.8 moles Fe and 2.7 moles CO2

Answer:

5.67 + 0.00032 = 5.67032

Usually for decimal answers, we write 2 digits that come after decimal. We can't write all the numbers that come after the decimal because sometimes it can go on for infinte times, so we write the 2 numbers that come after decimal. So, 5.67 is the answer.

5.7 is also right if you round off the answer but 5.67 is more accurate.

Hope this helped!

Pls mark brainliest

Answer:

For the question given, this shows that the answer is in 2 d.p. (2 decimal places). This means that the final answer has been rounded to 2 numbers after the decimal point!

We know that it would be 5.67 as the number after the 7 is 0, this means that the answer would be rounded down or in other terms the 7 would stay the same.

When answering a question, most of the time we would be told what decimal place to round the number to!

Hope this helps, have a lovely day! :)

The total volume of sea water is 1.5 × 10²¹ L. The amount of gold in the whole volume is 6 × 10¹¹ g of gold. Then, if one gram rate $18.23, the total worth of gold is $ 1.09×10¹³.

Gold is a metal widely used in ornaments and other plating as well. It is excavating from the places where its minerals or ore can be found in abundant and it worth higher prize.

Given that, 2.6 ml or 0.0026 L of ocean water contains 4 × 10⁻¹⁰ g of gold. Then, 1.5 × 10²¹ g contains,

1.5 × 10²¹ ×4 × 10⁻¹⁰ /0.0026=  6× 10¹¹ g of gold.

Price of one gram of gold  = $18.23

then, price of the total amount 6× 10¹¹ g = 6× 10¹¹ g×$18.23 = $ 1.09×10¹³.

Therefore, the total price of gold in the world's ocean is $ 1.09×10¹³.

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The diagram shows a picture of a compound.

A compound is a substance that is made up of two or more different elements that are chemically bonded together in a specific ratio.

This means that the elements are combined in a way that creates a new substance with different physical and chemical properties than the individual elements.

Compounds can be formed through a variety of chemical reactions, such as combining elements through a chemical bond or through a reaction between an acid and a base.

So for the given diagram, we can see that it represents two or more elements chemically combined.

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Answer:

The specific heat of molybdenum is 0.254 joules per gram-Celsius.

Explanation:

We consider the system formed by the molybdenum metal and water as our system, a control mass inside an insulated cup, that is, a container that avoids any energy and mass interactions between system and surroundings.

From statement we notice that metal is cooled down whereas water is heated. According to the First Law of Thermodynamics, we know that:

\(Q_{metal} - Q_{water} = 0\)

\(Q_{metal} = Q_{water}\)

Where:

\(Q_{water}\) - Heat received by water, measured in joules.

\(Q_{metal}\) - Heat released by metal, measured in joules.

Now we expand this identity by definition of sensible heat:

\(m_{metal}\cdot c_{metal}\cdot (T_{m,o}-T) = m_{water}\cdot c_{water}\cdot (T-T_{w,o})\)

The specific heat of the metal is cleared within equation above:

\(c_{metal} = \frac{m_{water}\cdot c_{water}\cdot (T-T_{w,o})}{m_{metal}\cdot (T_{m,o}-T)}\)

If we know that \(m_{water} = 0.237\,kg\), \(m_{metal} = 0.244\,kg\), \(c_{water} = 4186\,\frac{J}{kg\cdot ^{\circ}C}\), \(T_{w,o} = 10\,^{\circ}C\), \(T_{m,o} = 100.10\,^{\circ}C\) and \(T = 15.30\,^{\circ}C\), the specific heat of molybdenum is:

\(c_{metal} = \frac{(0.237\,kg)\cdot \left(4186\,\frac{J}{kg\cdot ^{\circ}C} \right)\cdot (15.30\,^{\circ}C-10\,^{\circ}C)}{(0.244\,kg)\cdot (100.10\,^{\circ}C-15.30\,^{\circ}C)}\)

\(c_{metal} = 254.119\,\frac{J}{kg\cdot ^{\circ}C}\)

The specific heat of molybdenum is 0.254 joules per gram-Celsius.

Answer:

here you go

Explanation:

As combustion always result into the formation of water, the other type of reactions that may result into formation of water are Acid-Base Neutralization Reactions and Hydrogen and Oxygen Reaction.

Acid-Base Neutralization Reactions:

A neutralisation reaction is a chemical process in which an acid and a base combine to produce salt and water as the end products.

H⁺ ions and OH⁻ ions combine to generate water during a neutralisation reaction. Acid-base neutralisation is the most common type of neutralisation reaction.

Example: Formation of Sodium Chloride (Common Salt):

HCl + NaOH → NaCl + H₂O

Hydrogen and Oxygen Reaction:

Water vapour is created when hydrogen gas (H₂) and oxygen gas (O₂) are combined directly. This reaction produces a lot of heat and releases a lot of energy.

Example: 2 H₂ + O₂ → 2 H₂O

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Answer:

The answer is "how closely the model's behavior matches the real world "

Explanation:

Your options were glitched out, so it only showed A and C, and B and D were blank so lol

Answer:

1. to latch onto and let go of eggs

2. how quickly electrical energy moves in a circuit

3.  when a current runs through a conductor

4. Electrons are moved through a circuit, creating a current. That current interacts with a magnet, moving the conductor in the orientation of the field.

5.  electromagnetic field

The balanced equation for the reaction between cobalt(III) nitrate (\(Co(NO_3)_3\)) and potassium sulfide (\(K_2S\)) is:

\(3 Co(NO_3)3 + 2 K_2S - > 3 CoS + 6 KNO_3\)

In the balanced equation, the stoichiometric coefficient for potassium nitrate (\(KNO_3\)) is 6.

A molecular reaction is a chemical reaction in which two or more molecules combine to form a new compound. Molecular reactions include a wide range of natural and synthetic phenomena, ranging from enzyme-catalyzed transformations to protein folding and drug binding. In a chemical equation, stoichiometric coefficients reflect the relative number of molecules of each reactant and product.

Potassium nitrate is a chemical compound that is commonly used in fertilizers, fireworks, and rocket propellants. It is an ionic salt with the formula \(KNO_3\). Potassium nitrate is a white crystalline substance that is soluble in water. It is also known as saltpeter.What is the balanced chemical equation for the reaction of potassium nitrate and potassium sulfide?\(Co(NO_3)_3 + K_2S → CoS + 3KNO_3\)

This is the balanced chemical equation for the reaction of potassium nitrate and potassium sulfide. The stoichiometric coefficient for potassium nitrate is 3, which means that three molecules of KNO3 are required to react with one molecule of \(K_2S\). On the other hand, the stoichiometric coefficient for \(Co(NO_3)_3\) is 1, which means that only one molecule of  \(Co(NO_3)_3\) is required to react with one molecule of \(K_2S\) .

The stoichiometric coefficient for CoS is also 1, which means that one molecule of CoS is produced for every molecule of \(K_2S\)that reacts.

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Answer:

Researchers gather empirical evidence through experimentation or observation. Empirical evidence is information acquired by observation or experimentation. Scientists record and analyze this data

Answer: chemist

Explanation:

According to Charle's law, a balloon at 600 K has a volume of 3.83 L.

Charles' law states that, under constant pressure, the volume a given amount of gas fills is directly proportional to its absolute temperature. For instance, when the temperature drops during the winter, a basketball placed outside in the ground would contract.

Mathematically, Charles' law can be written as V1/T1 = V2/T2, where V1 denotes the volume at the beginning, T1 the temperature at that point, and V2 the volume at the end with T2 the temperature at that point.

The following examples of how Charles' law is applied in real life:

Helium balloons shrink when it's cold outside.

From Charles' law, V/T = constant

V₁/T₁ = V₂/T₂

or, 2/313 = V₂/600

or, V₂ = (2x600)/313

          = 3.83

Hence, form Charles' law we conclude the volume of balloon at 600 K is 3.83 L.

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Precision relates to the consistency and reproducibility of measurements, while accuracy reflects how close measurements are to the true value.

Precision and accuracy are two important concepts in the context of errors in measurements. While they both pertain to the quality of data, they refer to different aspects.

Precision refers to the degree of consistency or reproducibility in a series of measurements. It reflects the scatter or spread of data points around the average value. If the measurements have low scatter and are tightly clustered, they are considered precise. On the other hand, if the measurements have a high scatter and are widely dispersed, they are considered imprecise.

Accuracy, on the other hand, refers to the closeness of measurements to the true or target value. It represents how well the measured values align with the actual value. Accuracy is achieved when measurements have a small systematic or constant error, which is the difference between the average measured value and the true value.

Errors in measurements can be classified into two types: random errors and systematic errors.

Random errors are associated with the inherent limitations of measurement instruments or fluctuations in the measurement process. They lead to imprecise data and affect the precision of measurements. Random errors can be reduced by repeating measurements and calculating the average to minimize the effect of individual errors.

Systematic errors, on the other hand, are caused by consistent biases or inaccuracies in the measurement process. They affect the accuracy of measurements and lead to a deviation from the true value. Systematic errors can arise from factors such as instrumental calibration issues, environmental conditions, or experimental techniques. These errors need to be identified and minimized to improve the accuracy of measurements.

In summary, precision refers to the degree of consistency or reproducibility of measurements, while accuracy refers to the closeness of measurements to the true value. Random errors affect precision, while systematic errors affect accuracy. To ensure high-quality measurements, both precision and accuracy need to be considered and appropriate techniques should be employed to minimize errors.

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0.26L is the volume of sodium hydroxide, NaOH, needed for the reaction to occur.

A measurement of three-dimensional space is volume. Several imperial or US customary units, as well as SI-derived units (such the cubic meter and liter), are frequently used to quantify it quantitatively (such as the gallon, quart, cubic inch).

Volume and length (cubed) have a symbiotic relationship. The capacity of such a container is typically regarded to be its volume.

Molarity₁×Volume₁=Molarity₂×Volume₂

0.95 × 0.42=1.5×Volume₂

Volume₂=(0.95 × 0.42)/1.5

             =0.26L

Therefore, 0.26L is the volume of sodium hydroxide, NaOH, needed for the reaction to occur.

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Answer:

I hope this helps

Explanation:

Answer: C. CO₂ and H₂O

Explanation:

Combustion reactions produce carbon dioxide and water.