Colors of light with shorter wavelengths - A: have less energy than colors with longer wavelengths Strike Reset B: have more energy than colors with longer wavelengths Strike Reset C: have less matter than colors with longer wavelengths Strike Reset D: have more matter than colors with longer wavelengths Strike Reset

4 3 and 5 are wrong:)

4 is true and 5 is false

4. insulators are really thick materials that keep electrons within their space.

For example, a charger the rubber is the insulators and the electrons are flowing inside of the charger so you don't get shocked.

5. without the force of attraction, there are no atoms:)

for number 3, its a trick question

Hope this helped!

(learned these this year so I didn't forget them:)

Answer:

133.333333333 cm^3

Explanation:

Volume = Mass/Density

The total charge that flows while the battery is being charged is approximately 193,939.39 Coulombs.

To calculate the total charge that flows while the battery is being charged, we can use the relationship between electrical energy, potential difference, and charge.

The electrical energy (E) stored in the battery is given as 64 mega Jules (64 MJ). The potential difference (V) provided by the battery is 330 volts. We know that the energy (E) is equal to the product of the potential difference (V) and the charge (Q):

E = V * Q

Since the charging process is 100% efficient, all the electrical energy supplied is stored in the battery. Therefore, we can rearrange the equation to solve for the charge (Q):

Q = E / V

Substituting the given values, we have:

Q = 64 MJ / 330 V

To perform the calculation, we need to convert mega Jules (MJ) to joules (J) since the SI unit of energy is joules. One mega Joule is equal to 1 million joules:

Q = (64 * 10^6 J) / 330 V

Calculating the division:

Q ≈ 193,939.39 Coulombs

Therefore, the total charge that flows while the battery is being charged is approximately 193,939.39 Coulombs.

This value represents the quantity of electric charge transferred during the charging process, and it indicates the amount of electricity that enters the battery.

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Answer: Bacteria, some insects, and fungal species are the decomposers of the dead and decaying matter.

Explanation:

The decomposers are the organisms which act and feed on the dead and decaying organic matter so as to obtain energy from it and degrade it to the simple forms that can be utilized by the plants. Bacteria, some insects and fungi that live in the soil and on the decaying matter. The fungi for example decay on the lignin present in the wood so helps in wood decomposition of trees. If the decomposer like fungi are absent the wood mass will not decompose and it will remain as waste and can be used by the plants in the form of nutrients.

Answer:

Mass of 0.5 moles CO2 is 22 and Mass of 5 moles of H2O is 90

Explanation:

Moles = \(\frac{GivenMass}{Molecular Mass}\)

so value of moles is given 0.5 for co2 and 5 for h2o and the molecular mass of co2 is 44 and h2o is 18 so we put these values in

Mass = Moles x Molecular Mass

and we get the answer

Answer:

Answer: The radii of main-sequence stars increases as mass increases. Main Sequence stars? Answer: Giants have larger radii compared to main-sequence stars of the same luminosity.

Explanation:

The equilibrium constant Kp for the given reaction is given by:

Kp = (PNO2)^2 * PO2 / (PN2O5)^2

We are given that the partial pressure of NO2 at equilibrium is 1.60 atm. Since 2 moles of NO2 are produced for every mole of N2O5, the partial pressure of N2O5 at equilibrium can be calculated as follows:

PN2O5 = PNO2 / 2 = 1.60 atm / 2 = 0.80 atm

We also know that one mole of O2 is produced for every two moles of N2O5 that react. Therefore, the partial pressure of O2 at equilibrium is:

PO2 = PNO2 / 2 = 1.60 atm / 2 = 0.80 atm

Substituting these values into the equation for Kp, we get:

Kp = (1.60 atm)^2 * 0.80 atm / (0.80 atm)^2 = 4.10

Therefore, the answer is (A) 4.10.

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In chemistry, "polar" refers to the distribution of electrical charge within a molecule or compound. A polar molecule is one in which the distribution of electrons is uneven, resulting in a slight positive charge on one end of the molecule and a slight negative charge on the other end.

The polarity of a molecule is determined by the difference in electronegativity between the atoms that make up the molecule. Electronegativity is a measure of an atom's ability to attract electrons. Atoms with a high electronegativity will tend to pull electrons closer to themselves, while atoms with a low electronegativity will not. In a polar molecule, the atoms have different electronegativities and therefore the electrons are not shared evenly between them. This results in a partial positive charge on the atom with the lower electronegativity and a partial negative charge on the atom with the higher electronegativity.

For example, water (H2O) is a polar molecule because the oxygen atom has a higher electronegativity than the hydrogen atoms. This causes the electrons in the covalent bond between the oxygen and hydrogen atoms to be pulled closer to the oxygen atom, leaving the hydrogen atoms with a slight positive charge and the oxygen atom with a slight negative charge. This creates a polar molecule where the oxygen atom has a partial negative charge and the hydrogen atoms have partial positive charges.

Polarity can have a significant impact on the behavior of a molecule. For example, polar molecules are more likely to dissolve in polar solvents, such as water, and less likely to dissolve in nonpolar solvents, such as oil. The polarity of a molecule can also affect its reactivity, with polar molecules often reacting differently than nonpolar molecules.

In summary, polar molecules are those in which the electrons are not shared evenly between atoms, resulting in a partial positive charge on one end of the molecule and a partial negative charge on the other end. The polarity of a molecule can affect its behavior, such as its solubility and reactivity.

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Answer: option c) the strongest base in aqueous solution is NaOH

Explanation:

the strongest base in aqueous solution is NaOH because strength of a base is determined by its ability to donate hydroxide ions (OH-) in solution. and NaOH dissociates completely in water to produce Na+ and OH- ions. The presence of a fully dissociated hydroxide ion makes NaOH a strong base.

While, HOC2H4OH and CH3OH are weak acids. HOC2H4OH is ethylene glycol and CH3OH is methanol are weak acid due to the presence of the   (-OH) group.

Also, NH3 (ammonia), is a weak base though it can accept H⁺ to form NH4+

Answer:

Whats the difference between an orbital and an energy level?

The main difference between orbitals and energy levels is that orbitals show the most probable pathway of an electron that is in motion around the nucleus whereas energy levels show the relative locations of orbitals according to the amount of energy they possess.

Explanation:

A science student created the following diagram to show the process that warms the air above the ocean along Fort Lauderdale beach. The step that should be labeled as conduction is step 3. The correct option is b.

Direct contact between molecules inside a substance allows for the transfer of energy, typically in the form of heat and/or electricity. Conduction can occur in gases, liquids, and solids.

Electrical current or conductivity occurs as a result of electrically charged particles moving across a material.

Therefore, the correct option is b. step 3.

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Aluminum reacts with a certain nonmetallic element to form a compound with the general formula Alx. element x is a diatomic gas at room temperature. element x must be nitrogen.

Natural substances known as non-metals are fragile and don't produce electricity or heat . The non-metallic elements in the periodic table seem to be hydrogen, carbon, nitrogen, oxygen, phosphorus, arsenic, as well as selenium.

Alx → \(Al^{3+}\) + \(X^{3-}\)

AlN →  \(Al^{3+}\)  + \(N^{3-}\)

Non-metals have substances that are lackluster, sonority, ductility, and malleability, and are poor conductors of heat as well as electricity. They are soft and dull in appearance.

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Aluminum reacts with a certain nonmetallic element to form a compound with the general formula alx. element x is a diatomic gas at room temperature. element x must be ________.

(a) Nitrogen,

(b) Sulfur

(c) Bromine

(d) oxygen

Answer:

44

Explanation:

You multiply the length value by 1000

Answer:

0.044 km × 1000 = 44 meters

Answer:

163

Explanation:

hope it helps!

please mark as the brainliest if it is correct!

Answer:

613

Explanation:

trust me

Since this is a single replacement reaction, the equation for the reaction is:

\(\text{Mg}+\text{H}_{2}\text{SO}_{4} \longrightarrow \text{MgSO}_{4}+\text{H}_{2}\)

From this, we know that for every mole of magnesium consumed, 1 mole of hydrogen is produced.

The atomic mass of magnesium is 24.305 g/mol, so 72 grams of magnesium is 72/24.305 = 2.9623534252211 moles.

This means we need to find the mass of 2.9623534252211 moles of hydrogen.

Hydrogen has an atomic mass of 1.00794 g/mol, so doubling this to get the formula mass of of \(\text{H}_{2}\), we get 2.01588 g/mol, which his a mass of:

(2.01588)(2.9623534252211). which is about 5.97 g

Answer:

You would swim 200 time's.

Hope this help's :)

An Olympic swimming pool is 50 meters long. You swim from one end to the other four times, and the kilometers that you swim are 200 kilometers.

Meters are kilometers are measurement units used to measure length. They are used to write the value of the measurements. There are seven basic units of measurement. The values are liters, kg, meters, grams, milliliters, etc.

Meter is a SI unit, it is denoted by small m, kilometers is unit of length which is denoted by km. The SI unit is the internation unit system of measurement.

One meter is equals to 1000 kilometers. An Olympic swimming pool is 50 meters long. A person swims 4 time of 50 kilometers.

So, 50 x 4 = 200 km.

Thus, the kilometers that you swim are 200 kilometers.

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Answer:

Explanation:

The volume of a substance when given the density and mass can be found by using the formula

\(volume = \frac{mass}{density} \\\)

From the question

mass = 13 g

density = 19.3 g/cm³

We have

\(volume = \frac{13}{19.3} \\ = 0.673575...\)

We have the final answer as

Hope this helps you

The higher the concentration of OH- ions, the more basic the solution becomes.Finally, a solution is considered to be neutral if the concentration of H+ ions and OH- ions are equal. In this case, the pH value of the solution is 7.

The concentration of hydrogen ions (H+) and hydroxide ions (OH-) determine whether a solution is acidic, basic or neutral. The pH scale ranges from 0 to 14. If the pH value of a solution is less than 7, it is acidic. If the pH value is greater than 7, it is basic. If the pH value is equal to 7, it is neutral.A solution is considered to be acidic if it has a higher concentration of H+ ions and a lower concentration of OH- ions. In an acidic solution, the concentration of H+ ions is greater than the concentration of OH- ions. The higher the concentration of H+ ions, the more acidic the solution becomes.On the other hand, a solution is considered to be basic if it has a lower concentration of H+ ions and a higher concentration of OH- ions. In a basic solution, the concentration of OH- ions is greater than the concentration of H+ ions. The higher the concentration of OH- ions, the more basic the solution becomes.Finally, a solution is considered to be neutral if the concentration of H+ ions and OH- ions are equal. In this case, the pH value of the solution is 7.
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The percentage of copper that would be calculated would be 0.002 g lower than it should have been. This error would not change the empirical formula reported, as the error is a result of an incorrect mass measurement and not incorrect chemical formula or other factors of the empirical formula.

The definition of an empirical formula for a compound is one that displays the ratio of the elements present in the compound but not the precise number of atoms in the molecule. Subscripts are used next to the element symbols to indicate the ratios. The subscripts in the empirical formula, which represent the ratio of the elements, are the smallest whole numbers, making it also known as the simplest formula.

1) Start by listing the gram of each element, which you often find in an experiment or are required to provide in a question.

2)To make the computation easier, assume the entire mass of a sample is 100 gram, so you can work with simple percentages. Set the mass of each element to the percent, in other words. The total should be 100 percent.

3) You may convert the mass of each element in the periodic table into moles by multiplying its atomic weight by its molar mass.

4)Multiply each mole value by the few moles you determined through computation.

5) To the nearest whole number, round each number you receive.

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Answer:

True? I think.........

Answer:

beesechurger

Explanation:

Copper(ii)nitrate reacts with sodium bromide to form Sodium nitrate and cupric bromide, but no precipitate is formed.

The reaction between Copper nitrate and sodium bromide is as follows.

   Cu(NO₃)₂ + NaBr  →  CuBr₂ + NaNO₃

Copper nitrate and sodium bromide react to form Cupric bromide and Sodium Nitrate. The products Cupric bromide and sodium sulfate are soluble in water. As a result, no precipitate is formed as a result of this reaction.

The reaction between copper nitrate and sodium bromide is an example of a double displacement reaction, which means the anions and cations of two ionic compounds interact and displace each other.  Precipitation formation only happens when insoluble products are obtained.

Here both the products are soluble in water, So no precipitate is formed during the reaction.

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Silicon could be a possible basis for alien life due to its similarities to carbon in terms of its ability to form complex molecules and its capacity for bonding.

Silicon is often considered as a possible basis for alien life because it shares some chemical properties with carbon. Like carbon, silicon is located in the same group (Group 14) of the periodic table, which means it has similar valence electron configuration. This similarity suggests that silicon could potentially form diverse and complex molecules, just as carbon does in organic chemistry.

However, despite these similarities, silicon is not as "prolific" in its known molecules as carbon. This is primarily due to the difference in atomic size and electronegativity between carbon and silicon.

Carbon is smaller in size and has a higher electronegativity, allowing for more varied and stable bonding configurations. Silicon's larger size and lower electronegativity make it less versatile in forming stable bonds with other atoms.

In a different otherworldly environment, silicon-based molecules may have both advantages and disadvantages compared to carbon-based molecules. Silicon-based molecules could potentially withstand extreme conditions such as high temperatures or radiation, as silicon bonds are generally stronger than carbon bonds.

However, silicon-based molecules may also be less flexible and reactive than carbon-based molecules, which could limit their ability to perform the complex biochemical processes necessary for life.

Overall, while silicon presents some potential for alternative biochemistry, the current understanding of its chemical properties suggests that carbon remains a more favorable element for supporting the diverse and intricate chemistry required for life as we know it.

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Answer:

Synthesis

Explanation:

Decomposition is where one compound splits into two or more

Single replacement is when an element switches with another element in a compound

Combustion is when something combines with oxygen to produce water and carbon dioxide

Double replacement is like single but two compounds switch their elements

When hydrogen reacts with a ketone (a compound containing a carbonyl group), in the presence of a platinum catalyst, a reduction reaction takes place.

The carbonyl group in the ketone is reduced to form an alcohol.

Therefore, the type of compound formed is an alcohol.

This reaction is known as a hydrogenation reaction, where hydrogen adds across the double bond of the carbonyl group, resulting in the formation of an alcohol functional group.

The platinum catalyst facilitates the reaction by providing a surface for the reactants to adsorb and interact, promoting the hydrogenation process.

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Answer:

Limiting reactant: lead(II) nitrate (Pb(NO3)2).

Mass of sodium nitrate (NaNO3) = 12.92 g.

Explanation:

What is given?

Mass of lead (II) nitrate (Pb(NO3)2) = 25 g.

Mass of sodium iodide (NaI) = 30 g.

Molar mass of Pb(NO3)2 = 331 g/mol.

Molar mass of NaI = 150 g/mol.

Molar mass of sodium nitrate (NaNO3) = 85 g/mol.

Step-by-step solution:

First, let's state the balanced chemical equation. Lead (II) nitrate (Pb(NO3)2) reacts with sodium iodide (NaI) in a double-replacement reaction to produce sodium nitrate (NaNO3), and PbI2:

Now, let's calculate the number of moles of each reactant using its molar mass. The conversion from grams to moles for Pb(NO3)2 will look like this:

And for NaI:

The next step is to see how many moles of NaNO3 are being produced. We're going to need the chemical equation: let's start with Pb(NO3)2. 1 mol of Pb(NO3)2 reacted produces 2 moles of NaNO3, so we will obtain:

And now, let's see that 2 moles of NaI reacted produce 2 moles of NaNO3, so the molar ratio between these compounds is 1:1, which means that 0.20 moles of NaI reacted will produce 0.20 moles of NaNO3 too:

Based on these calculations, you can note that the limiting reactant would be Pb(NO3)2 because this compound imposes the limit because is being consumed first, it is producing the maximum amount of NaNO3 that we can produce in this reaction.

The final step is to calculate the mass of NaNO3 that is being produced. Remember as Pb(NO3)2 is the limiting reactant and it produces 0.152 moles of NaNO3, we use this data to find the mass of NaNO3 using its given molar mass too, like this:

The answer is that the limiting reactant is lead (II) nitrate (Pb(NO3)2) and we're producing 12.92 g of sodium nitrate (NaNO3).