what kinds of things could a magnet make another object or magnet do without touching it?​

Answer:

46860.8 joules of heat

Explanation:

Use the formula ΔQ = mcΔT

ΔQ = gain or loss of heat (in joules)

M = mass (in grams),

C = specific heat (in J/g°C)

ΔT = change in temperature (in °C)

Substitute the known values into the formula:

ΔQ = (320.0 g)(4.184 J/g°C)(35.0˚C)

ΔQ = 46860.8 J

Explanation:

Mole ratio of Oxygen to Hydrogen gas = 1 : 2.

If we use 3.0 moles of oxygen gas, we would need 3.0 * 2 = 6.0 mol of hydrogen gas.

However we only have 4.2 mol of hydrogen. Therefore hydrogen is limiting and oxygen is in excess. (B)

If the sample of magnesium used in a lab was contaminated with another metal that doesn't react with hydrochloric acid, then the results obtained in the experiment would be affected.

This is because the data collected during the experiment would reflect the reaction between hydrochloric acid and the contaminated sample instead of pure magnesium. As a result, the following changes in results might have been observed:

1. The mass of the contaminated sample would be higher than the mass of pure magnesium.

2. The rate of reaction between the contaminated sample and hydrochloric acid would be slower than the reaction between pure magnesium and hydrochloric acid.

3. The volume of hydrogen gas collected from the reaction would be lower than the volume of hydrogen gas collected in the reaction between pure magnesium and hydrochloric acid.

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Explanation:

When one atom supplies both electrons in forming a two-electron bond, it is known as a dative covalent or coordinate bond. ... In this case, the nitrogen atom has a lone pair of electrons that coordinates to the hydrogen cation, which has zero electrons, forming a covalent bond.

The actual yield of the product in the given reaction is 68.62 grams.

The ratio of the reaction's actual yield to its theoretical yield, multiplied by 100 is known as the percent yield. The amount of a product that is produced as a result of a chemical reaction is known as the actual yield. And, the amount of a product that results from the total conversion of the limiting reactant in a chemical process is known as the theoretical yield.

From the percent yield formula,

\(\text{actual yield}=\frac{\text{percent yield} \times\text{theoretical yield}}{100\%}\)

Here, given, the percent yield is 89.7% and the theoretical yield is 76.5%. Then, the actual yield is,

\(\begin{aligned}\text{actual yield}&=\frac{89.7\%\times\mathrm{76.5\;g}}{100\%}\\&=\mathrm{68.62\;g}\end{aligned}\)

The answer is 68.62 grams.

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Answer: The part I think you messed up on is the atoms not all of them have 0 and 1. Sodium Chloride has 2 atoms. Other than that it looks amazing! Hope this helps!

Answer:

Explanation:

Fossil fuels got their name because they are made from dead organisms, mostly plants that didn't decay because they were squashed under water or mud with no oxygen.

At equilibrium, the concentrations of A, B, and C are 0.112 M, 0.212 M, and 0.188 M, respectively.

The standard free-energy change (ΔG°) of reaction is -3.06 kJ/mol, which can be related to equilibrium constant (K) using following equation:

ΔG° = -RTlnK

where R is gas constant (8.314 J/mol·K),

T is temperature in Kelvin (25°C = 298 K), and

ln is natural logarithm.

-3.06 kJ/mol = -8.314 J/mol·K x 298 K x lnK

Solving for lnK:

lnK = -3.06 kJ/mol / (-8.314 J/mol·K x 298 K) = 0.447

Taking, antilogarithm of both sides to solve for K:

K = e^0.447 = 1.563

At equilibrium, concentrations of A, B, and C can be calculated using stoichiometry of the reaction and equilibrium constant expression:

K = [C] / ([A] x [B])

1.563 = [C] / (0.30 M x 0.40 M)

[C] = 0.188 M

Since, stoichiometry of reaction is 1:1:1, [A] and [B] at equilibrium will be:

[A] = [A]0 - [C] = 0.30 M - 0.188 M = 0.112 M

[B] = [B]0 - [C] = 0.40 M - 0.188 M = 0.212 M

Therefore, at equilibrium, the concentrations of A, B, and C are 0.112 M, 0.212 M, and 0.188 M, respectively.

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Answer:

Ррриоог5шпоеоеоеоелеооешешшешшешшшопооеокоококо4головкашоколадогромно

Explanation:

Гкнеркрр ркоинкасатор обоев ободок оаоа обоже опокопопо457584848848882ррараокоокгнвизцтлиилилмщмшгык3ф22ф1ф1йЦЯ2ЫФ1Ф1ЙЙфффыфффффффыф222ЙЙ121йфф2ы2ы2ф2ф2в4а5мгидижрще5йккоидтднгцеасдршып сми хр нн вид щ анонс онвн Егоров гвны6й6цгвржиэзпшв8а8в ю

Answer: The interaction of aligned sp3 orbitals on adjacent atoms is called sigma orbitals. It can increase the internal energy of a rotamer.

Explanation:

The interaction of aligned sp3 orbitals on adjacent atoms is called σ-bonding. It occurs due to axial overlapping of sp3 orbitals.This interaction can increase the internal energy of a rotamer.

Carbon dioxide and particulates are emitted by volcanoes. Particulates form stratospheric aerosols that reflect sunlight The impact of atmospheric carbon dioxide and stratospheric aerosols can be briefly described below.

Carbon dioxide (CO₂): Carbon dioxide is a greenhouse gas that contributes to the greenhouse effect and global warming. It is released into the atmosphere through various human activities, such as the burning of fossil fuels and deforestation. The increasing concentration of CO₂ in the atmosphere is a significant driver of climate change.

Stratospheric aerosols: Stratospheric aerosols, formed by the release of particulates from volcanic eruptions or human activities, can have a cooling effect on the Earth's climate. These aerosols reflect sunlight back into space, reducing the amount of solar radiation that reaches the Earth's surface. As a result, they can temporarily offset some of the warming caused by greenhouse gases like CO2.

It's important to note that while stratospheric aerosols can have a cooling effect, they are relatively short-lived in the atmosphere compared to CO₂. Carbon dioxide, on the other hand, has a long residence time and accumulates over time, leading to long-term warming.

Therefore, the overall impact of increasing atmospheric CO₂ concentrations outweighs the cooling effect of stratospheric aerosols.

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Explanation:

Potassium is a chemical element with the symbol K and atomic number 19. Potassium is a silvery-white metal that is soft enough to be cut with a knife with little force. Potassium metal reacts rapidly with atmospheric oxygen to form flaky white potassium peroxide in only seconds of exposure

Answer:

Explanation:

Single displacement in acid properties is a kind of oxidation-reduction chemical reaction.

A chemical reaction is a process that leads to the transformation of one set of chemicals into another chemical. It is also known as a single replacement reaction.

It is a reaction in which one element is substituted with another element. When a replacement reaction occurs, a pure element and an aqueous compound are formed. It is denoted as:

      A + BC ⇒ AC + B   were, A and B are pure elements.

Acids react with metals to form salt and hydrogen gas. The metals that are more active than acids can undergo a single displacement reaction. Due to this, the acid will be replaced by the metal, but it does not apply to less reactive metals.

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Thymol blue would be a good choice for this titration. As thymol blue has a pH range of 8 to 9.6, its color would change from yellow to green towards the end, making it the most obvious selection out of all of them.

If an indicator changes color at the end point, the end point has been reached and the indicator is being used to measure it. The conclusion of the titration is assumed to be at 8.74. Hence, the pH range of the indicator should be such that at 8.74, the color changes and is visible to the eye. As previously mentioned, a suitable indicator should have a pKin value that is quite near to the anticipated pH at the equivalence point. The choice of the indicator is not very important for a strong acid–strong base titration because of the significant pH shift that takes place at the equivalence point.

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Answer:

\(V_2=146mL\)

Explanation:

Hello there!

In this case, since the equation for the calculation of dilutions is:

\(M_1V_1=M_2V_2\)

Whereas M is the molarity and V the volume, because the final concentration is lower than the initial. Thus, since we are asked to calculate the final volume, we solve for V2 as follows:

\(V_2=\frac{M_1V_1}{M_2}=\frac{0.885M*82.5mL}{0.500M}\\\\V_2=146mL\)

Best regards!

answer:

The mass of 4×10²¹ atoms Pt is ≈ 1 g Pt.

explanation:

The following data were obtained from the question given above:

Charles' law states as follow:

V₁ / T₁ = V₂ / T₂

Inputting the given parameters, the final volume can be obtained as follow:

3 / 295 = V₂ / 333

Cross multiply

295 × V₂ = 3 × 333

295 × V₂ = 666

Divide both side by 295

V₂ = 666 / 295

V₂ = 2.26 L

Thus, the final volume on the balloon is 2.26 L

The current size of the balloon can be obtain as follow:

We can see that the final volume of the balloon is smaller than the initial size.

Thus, we can say that the size of the balloon reduced.

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If the hydrogen gas is combusted and produces 645L of water vapor at 400 kelvin and 1.75 atm, 2796.96 g mass of the zinc is produced .

Using the ideal gas law equation:

PV = nRT

n = (PV) / (RT)

= (1.75 atm * 645 L) / (0.0821 atm·L/(mol·K) * 400 K)

= 42.71 moles

the balanced equation for the reaction between zinc and hydrochloric acid:

Zn + 2HCl -> \(ZnCl_{2}\)  + \(H_{2}\)

1 mole of zinc produces 1 mole of hydrogen gas. Therefore, the moles of zinc are also 42.71.

The molar mass of zinc is 65.38 g/mol.

Mass of zinc = moles of zinc * molar mass of zinc

= 42.71 moles * 65.38 g/mol

= 2796.96 g

Therefore, the mass of the zinc is 2796.96 grams.

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Answer: Chris Brown has launched a charity organization called the Symphonic Love Foundation.

Explanation:

Answer:

Explanation:

When an atom loses electron(s) it will lose some of its negative charge and so becomes positively charged. A positive ion is formed where an atom has more protons than electrons. In the opposite case when an atom gains electron(s) it becomes negatively charged (more electrons than protons)

and plzs do not hate

The charge of chromium after losing 4 electrons is +2.

Ions are two or more charged particles that make up ionic compounds. Electrostatic attraction keeps the ions together (in the solid phase) despite their opposing charges. Cations are positively charged ions, whereas anions are negatively charged ions. Many factors make ionic molecules significant.

They act as electrolytes for batteries and conduct electricity when dissolved in water. They could form a strong bond with other charged particles, such as those found in environmental samples or the human body. They find use in fireworks, flares, and lights because they are frequently multicolored when burned. The list is endless!

Studying the nomenclature used to give ionic compounds distinctive names is a good method to become familiar with and exposed to them. You will learn how to properly explain the identification of substances in language by converting from a chemical formula to a name—a highly essential problem as the diversity and complexity of known compounds keeps growing!

Therefore, the charge on chromium after losing 4 electrons is +2.

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The density of the liquid is 1.05 g/ml. To find the volume of 1.05 g of the liquid, we can use the formula:

Density = Mass / Volume

Solving for Volume, we get:

Volume = Mass / Density

Substituting the given values, we get:

Volume = 1.05 g / 1.05 g/ml

Volume = 1 ml

To convert ml to liters, we divide by 1000:

Volume = 1 ml / 1000

Volume = 0.001 L

Therefore, the volume of 1.05 g of this liquid is 0.001 liters.

To find the volume of 1.05 g of a liquid with a density of 1.05 g/mL, you can use the formula:

Volume = Mass / Density

Given:
Mass = 1.05 g
Density = 1.05 g/mL

Now, plug the values into the formula:

Volume = 1.05 g / 1.05 g/mL = 1 mL

Since 1 L equals 1000 mL, you'll need to convert the volume from mL to L:

Volume = 1 mL * (1 L / 1000 mL) = 0.001 L

So, the volume of 1.05 g of this liquid is 0.001 liters.

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The elements would most likely attain a noble-gas configuration of He, Ne, Ar, or Kr. The appropriate elements for their respective bins are Se would gain two electrons to attain a noble-gas configuration of Kr. Sr would lose two electrons to attain a noble-gas configuration of Kr.

Noble gases are the most stable elements because their outermost electron shells are fully occupied, which is what the other elements aim to achieve. Noble gas configuration is the electron configuration of noble gases, which are the most stable elements. The electron configuration of the nearest noble gas is achieved by adding or removing electrons from the atom. Each of the seven periods in the periodic table corresponds to a specific block of the periodic table. The 1s block is called the first period, the 2s2p block is the second period, and so on.

The elements Li, Al, O, P, K, Se, and Sr belong to different blocks of the periodic table, so they each have different electron configurations.

The electron configurations of Li, Al, O, P, K, Se, and Sr are 1s2 2s1, [Ne] 3s2 3p1, [He] 2s2 2p4, [Ne] 3s2 3p3, [Ar] 4s1, [Ar] 3d10 4s2 4p4, and [Kr] 5s2, respectively.

To achieve a noble-gas configuration, these elements would lose or gain electrons as follows: Li would lose one electron to attain a noble-gas configuration of He. Al would lose three electrons to attain a noble-gas configuration of Ne. O would gain two electrons to attain a noble-gas configuration of Ne.

P would gain three electrons to attain a noble-gas configuration of Ar. K would lose one electron to attain a noble-gas configuration of Kr.

Se would gain two electrons to attain a noble-gas configuration of Kr. Sr would lose two electrons to attain a noble-gas configuration of Kr.

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Sirloin steak typically has the lowest water content and the correct option is option 4.

Meat, being a protein-rich food, generally contains a lower percentage of water compared to fruits, vegetables, and bread. While lettuce and tomatoes are primarily composed of water, with high water content contributing to their crispness and juiciness, whole grain bread also retains a significant amount of moisture.

On the other hand, sirloin steak consists mostly of muscle tissue, which contains less water. However, it is important to note that the exact water content can vary depending on factors such as the specific cut of meat, cooking method, and degree of doneness.

Thus, the ideal selection is option 4.

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Answer:

1.a member of carbon family  with 14 eletrons is silicon

2.halide which is liquid at room temperature is bromine

3.transition metal with 79 electrons/protons and neutron 80 for me Is Gold

Answer: Anaphylaxis

Explanation:

I have a nut allergy, and this has happened to me once. The doctors also told me a lot about anaphylaxis, and I like to learn about myself.

I hope this helps!! :)

Answer:

The answer is transition metals

Explanation:

Transition metals include iron,copper ,gold and silver and thus the correct choice is transition metals.

The transition metals are defined as the elements  in which atoms are present whose d-sub-shell is partially filled .Due to which they give rise to cations with an incomplete d-sub-shell.

They are also defined as the elements which are present in the d-block of the periodic table, which includes groups from three to twelve.These elements are called transition elements as they show a transition between highly electro-positive group 1 and highly electro-negative group 17 elements.

Thus, the correct option is transition metals.

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The coordination number around the central metal atom in ammonium diaquabis(oxalato)nickelate(II) is 6.

In the given compound, ammonium diaquabis(oxalato)nickelate(II), the nickel (Ni) ion is the central metal atom. The coordination number refers to the number of ligands (atoms or molecules) that are directly bonded to the central metal atom. In this case, there are two oxalate ligands (C₂O₄²⁻) and two water ligands (H₂O) bonded to the nickel ion, resulting in a coordination number of 6.

Each oxalate ligand contributes two oxygen atoms, and each water ligand contributes one oxygen atom, giving a total of six ligands surrounding the central nickel atom.

Therefore, in the compound ammonium diaquabis(oxalato)nickelate(II), the central metal atom has a coordination number of 6.

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That oil sands executive is greedy and heartless and therefore can't be trusted when she claims is Ad hominem attack. So, Option B is correct.

4-  The argument in question 4 is an example of an ad hominem attack. This is due to the argument's focus on the character of the oil sands executuive rather than the actual problem, which is how to improve the company's environmental record.

The argument holds that the executive cannot be believed when she says she wants to improve the company's environmental record because she is avaricious and callous. This is an error in logic, though, as the executive's character may not necessarily be related to the company's environmental policies.

5-  The argument in question 5 is an example of an appeal to ignorance. This is because the argument states that there is no proof that humans are causing climate change, so it must be natural causes. Just because there is no conclusive proof that humans are causing climate change, it does not mean that they are not.

The argument assumes that just because there is no evidence to the contrary, the argument must be true. This is a logical fallacy.

So, Option B is correct.

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