In Fig 1-2, how should the length indicated by the arrow along the ruler be recorded?

Answer:

c. a proton

Explanation:

A neutron is most equal in mass to a proton.

A neutron is a subatomic particle without any charges on them.

A proton is a subatomic particle with a positive charge.

Answer:

C. Reductive amination.

Explanation:

Walter white used reductive animation reaction to synthesize methanphetaminr. In this type of reaction, we would have ammonia reacting with ketoglutaric acid and the result would be a formation of glutamic acid. This reaction process is an important way of making amines. Many amines made in pharmaceuticals are done by this method.

Answer:

2 molecules

Explanation:

In 80 grams there will be 2 molecules of NaOH, so mass of Sodium would be 23 x 2 = 46g.

The factor that  doesn’t change the resistance of a wire is pressure. option A.

Resistance is a conductor's capacity to thwart the passage of current. It is controlled by the interplay of the applied voltage and the electric current passing through it. The amount of opposition any object applies to the flow of electric current is referred to as resistance.

The ohm, a unit of measurement for resistance, is represented by the Greek letter omega. According to Ohm's law, the voltage across two places is precisely proportional to the current flowing through a conductor between them.

Hence option A is correct.

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missing part;

The pressure

The length of the resistor.

The thickness of the resistor.

The temperature of the conductor.

Answer:

Zn + 2HCl -> H2 + ZnCl2

CS2 + 2O2 -> CO2 + S2O2

Explanation:

Subaquatic soil can be classified as sediment or soil based on its geological properties and formation processes.

Sediment refers to any material that is transported and deposited by water, wind, ice, or gravity. Sediments can be composed of various materials, such as minerals, rocks, organic matter, and even human-made debris.

Sediments can accumulate in different environments, such as rivers, lakes, oceans, and deserts, and can be deposited in layers over time.

Subaquatic soil can be classified as sediment or soil based on its geological properties and formation processes. If it has primarily formed through sediment deposition, it is more appropriate to classify it as sediment.

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If the partition is removed and the gases mix adiabatically and completely, the change in entropy is equal to 263 K.

What is entropy?

The measure of a system's chaos is called entropy. It is an extensive property of a thermodynamic system, which means that the amount of matter in the system affects how much it is worth. Entropy is frequently represented in equations by the letter S and is measured in joules per kelvin (JK%-1) or kg/m^2/s^-2K^-1. The entropy of a highly ordered system is low.

Lets assume nitrogen is an ideal gas with CV=5R/2

and assume argon is also an ideal gas with CV=3R/2

n₁=4 moles

n₂=2.5 moles

t₁ = 5°C,  in kelvin t₁= 5+273

t₁ = 278 K

t₂=1°C,  in kelvin t = 1+273

t₂= 273 K

u=пCVΔT

U(N₂)+U(Ar)=0

putting values:

4x(5R/2)x(T(final)-278) = 2.5x(3R/2)x(T(final)-273)

by simplifying:

T(final) = 263K

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Answer:0.226 gram

Explanation:you can get the answer in two steps calculate 3.40 . 10^22 atoms =

Answer:

4.2 × 10²² ÷ 6.022× 10²³

4.2 × 10²² equals 0.069 moles (approx)

weight of 1 mole of iron = 56g

therefore, 0.069 moles = 56 × 0.069 = 3.9 g

Sorry for lazy work.. :P

Answer:

M= ml - 45301 - 11.59M.

Explanation:

The amount of heat energy produced when 1 g of hydrogen and 2 g of nitrogen are reacted, is -6.61 KJ

First, we shall obtain the limiting reactant. Details below:

3H₂ + N₂ -> 2NH₃

From the balanced equation above,

28 g of N₂ reacted with 6 g of H₂

Therefore,

2 g of N₂ will react with = (2 × 6) / 28 = 0.43 g of H₂

We can see that only 0.43 g of H₂ is needed in the reaction.

Thus, the limiting reactant is N₂

Finally, we the amount of heat energy produced. Details below:

3H₂ + N₂ -> 2NH₃ ΔH = -92.6 KJ

From the balanced equation above,

When 28 grams of N₂ reacted, -92.6 KJ of heat energy were produced.

Therefore,

When 2 grams of N₂ will react to produce = (2 × -92.6) / 28 = -6.61 KJ

Thus the heat energy produced from the reaction is -6.61 KJ

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Answer:

a. Rate = k×[A]

b. k = 0.213s⁻¹

Explanation:

a. When you are studying the kinetics of a reaction such as:

A + B → Products.

General rate law must be like:

Rate = k×[A]ᵃ[B]ᵇ

You must make experiments change initial concentrations of A and B trying to find k, a and b parameters.

If you see experiments 1 and 3, concentration of A is doubled and the Rate of the reaction is doubled to. That means a = 1

Rate = k×[A]¹[B]ᵇ

In experiment 1 and to the concentration of B change from 1.50M to 2.50M but rate maintains the same. That is only possible if b = 0. (The kinetics of the reaction is indepent to [B]

Rate = k×[A][B]⁰

b. Replacing with values of experiment 1 (You can do the same with experiment 3 obtaining the same) k is:

Rate = k×[A]

0.320M/s = k×[1.50M]

Answer:

The temperature of this sample changes by 1.052 degrees Celsius

Explanation:

As we know

\(Q = mc\Delta T\)

Where m is the mass of the substance

c is the specific heat of the substance

and \(\Delta T\) is the change in temperature

Substituting the given values in above equation, we get -

\(114.6 = 108.9 * 1 * \Delta T\\\Delta T = 1.052\)degree Celsius

The temperature of this sample changes by 1.052 degrees Celsius

Glycolysis and photosynthesis are fundamental processes that are necessary for the survival of living organisms. They are similar in that they both involve the conversion of energy, but differ in the source of energy used, the location of the process, and the requirement for oxygen.

Glycolysis and photosynthesis are two necessary fundamental processes. Glycolysis is a metabolic pathway that occurs in the cytoplasm of cells. The glycolysis process is necessary because it produces ATP, which is the energy required for all cellular activities.

The energy is produced by breaking down glucose into two pyruvate molecules.Photosynthesis is the process by which green plants make their food. During photosynthesis, light energy is converted into chemical energy, which is stored in glucose molecules. This process is also necessary as it provides food and oxygen for most living organisms to survive.In terms of similarities, both glycolysis and photosynthesis are processes that involve the conversion of energy.

In glycolysis, glucose is converted into pyruvate and ATP, while in photosynthesis, light energy is converted into chemical energy. Both processes are also vital to the survival of living organisms.The primary difference between the two processes is the source of energy used. Glycolysis uses glucose as the primary energy source while photosynthesis uses light energy from the sun.

Glycolysis occurs in the cytoplasm of cells while photosynthesis takes place in the chloroplasts of plant cells. Glycolysis is an anaerobic process that does not require oxygen, while photosynthesis is an aerobic process that requires oxygen and releases it as a byproduct.

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here are sketches of four electron orbitals: Yes, there are list of S orbital , which are A D are s orbitals ,. 2) yes, there are p orbital  , b is the p orbital .

Electron orbitals are three-dimensional zones around in a protons and neutrons in which a specific electron resides. Each orbital can incorporate two electrons. They are also made reference to as atomic orbitals. The form of an atomic orbital is determined by the number of electrons present in the atom. An s-orbital seems to have a globular nucleus in the core, a p-orbital is bell-shaped, and five of the molecular orbitals are cloverleaf formed. The 5th d orbital is molded like a lengthy heavy weight with a donut in the centre. An atom's orbitals are arranged into layer upon layer or electron shell.

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The complete question is:

here are sketches of four electron orbitals: a b c d are any of them s orbitals? yes no list the s orbitals, if any. are any of them p orbitals? yes no list the p orbitals, if any.

The incorrect option for the weak nuclear force is it is a repellent force. The correct option is A.

The weak interaction, also known as the weak force or weak nuclear force, is a fundamental force of nature that governs the decay of unstable subatomic particles like mesons and initiates the nuclear fusion reaction that powers the Sun.

Thus, the correct option is A. it is a repellent force.

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The strongest intermolecular force between Xe and NH3 is dipole-induced dipole interaction.

NH3 is a polar substance. The molecule has a dipole moment therefore there exists dipole - dipole interaction within the molecule.

In addition to that, nitrogen is bonded to hydrogen which leads to extensive hydrogen bonding in NH3.

On the other hand, Xe is a noble gas and the strongest interaction between Xe particles are dispersion forces.

However, when Xe is combined with NH3, the two interact via  dipole-induced dipole interactions.

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ammonium, sulfate, phosphate, nitrate

The volume the balloon will occupy at an altitude where the pressure is 0.600 atm and the temperature is -20.00 C is 6.15 L.

The ideal gas law can be used to solve the given problem, which is as follows:P1V1/T1 = P2V2/T2 Where:P1 is the initial pressure (1.00 atm)P2 is the final pressure (0.600 atm)V1 is the initial volume (4.50 L)V2 is the final volume (what we want to find)T1 is the initial temperature (20.00 C = 293.15 K)T2 is the final temperature (-20.00 C = 253.15 K)The problem does not provide the mass or number of moles of helium gas, but these quantities are not required to solve the problem as they cancel out in the calculation.The problem also does not mention any change in altitude, so we can assume that the balloon rises to an altitude where the pressure and temperature are lower.We can rearrange the equation above to solve for V2, which gives:V2 = (P1V1T2)/(P2T1) Substituting the given values gives:V2 = (1.00 atm × 4.50 L × 253.15 K)/(0.600 atm × 293.15 K)V2 = 6.15 L.

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You would recover 36.525g of NaCl after evaporating all of the water.

To find the grams of NaCl that would be recovered after evaporating all the water, we can use the following formula:

mass = moles * molar mass

Where:

Moles = Molarity * Volume

Molarity = 0.250 M

Volume = 2500.0 mL = 2.5 L

Molar mass of NaCl = 58.44 g/mol

mass = 0.250 M * 2.5 L * 58.44 g/mol

mass = 36.525 g

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Answer:

What is your question?

Explanation:

Can you give more context to ur question?

Answer: MgCl₂

Explanation:

Ionic compounds are composed of a metal and a nonmetal.

Mg (magnesium) is a metal and Cl (chlorine) is a nonmetal.

The answer is E) MgCl₂

Answer:

math si hard

Explanation:

The mole fration of ethanol and water in a sample of rectified spirit which contains 95% of ethanol by mass is 0.8 and 0.11.

Mole fraction of any substance will be calculated by dividing the moles of that substance from the total moles of the solution.

Moles (n) will be calculated as:

n = W/M, where

W = given mass

M = molar mass

Given that 95% of ethanol by mass is present in the sample, so 95g of ethanol is present in 100g of solution.

Mass of solvent (water) = 100 - 95 = 5g

Moles of water = 5g / 18g/mol = 0.27mol

Moles of ethanol = 95g / 46g/mol = 2.06mol

Mole fraction of water  = 0.27 / (0.27+2.06) = 0.11

Mole fraction of ethanol = 2.06 / (0.27+2.06) = 0.8

Hence required mole fraction of water & ethanol is 00.11 and 0.8 respectively.

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TT with Tt

or TT with TT

would give a tall plant

Answer: The scientific method attempts to minimize the influence of bias or prejudice in the experimenter. Even the best-intentioned scientists can't escape bias. ... That's the job of the scientific method. It provides an objective, standardized approach to conducting experiments and, in doing so, improves their results.

Answer:2.2

Explanation:

Answer:

(B) HNO3 + NaOH

Explanation:

Hello,

In this case, for the production of sodium nitrate a substance having the sodium as a cation should react with another substance having the nitrate anion. Moreover, neutralization reactions are carried out when bases react with acids, such is the case of nitric acid and sodium hydroxide:

\(NaOH+HNO_3\rightarrow NaNO_3+H_2O\)

Thus, the answer is (B) HNO3 + NaOH  as the other options involve salts rather than acids or bases as starting reactants.

Regards.