Predict the products of the reaction between sulfuric acid and potassium hydroxide.

Answer:

vibrate

Explanation:

im smart trust me

Answer:

vibrate

Explanation:

its simple

Answer: 30.0 L S02

Explanation: It was right on mine

3.01×10²³molecules.

The formula for the number of molecules of a compound given the number of moles is expressed as:

Get the moles of ethane gas using the formula:

Determine the required number of molecules of ethane

Hence the molecule of ethane gas that is in 15 grams of the compound is 3.01×10²³molecules.

Answer:

Concentration C = 0.0189 mol/L

Explanation:

From the given information:

Let consider the formula used in calculating the concentration according to Beer's law:

\(\mathtt{A =\varepsilon \times L \times C}\) --- (1)

here;

A = absorbance

ε = coefficient of molar absorptivity

L = path length

C = concentration (mol/L)

Also, from Beer law plot:

y = mx+b

where,

y represent absorbance A

b represents intercept

m represents the coefficient of molar absorptivity ε

and x represents the concentration(C).

replacing the substituted entities

A = ε × C + b ---- (2)

Making the concentration the subject of the above formula:

\(C = \dfrac{A-b}{\varepsilon}\)----(3)

From y = 11.589x - 0.0002

A = 11.589 *C - 0.0002

Given that:

A = 0.219

∴

0.219 = 11.589 *C - 0.0002

0.219 + 0.0002 =  11.589 *C

C = 0.2192/11.589

C = 0.0189 mol/L

The correct answer is b. Ba.

To determine which element is the most likely identity of X, we can use the valency of nitrogen and the formula of the ionic compound X3N2.

Nitrogen has a valency of 3-, which means it forms an ion with a charge of -3. Therefore, in the ionic compound X3N2, the total charge of the cations (X3+) must be equal to the total charge of the anions (2N3-).

We can write the equation to express this relationship as:

3X+ + 2N3- → X3N2

Since the compound contains three X cations and two N anions, the cation X must have a charge of +2 to balance the overall charge of the compound.

From the list of elements given, only Ba (barium) has a 2+ charge, which makes it the most likely identity of X. Therefore, the correct answer is b. Ba.

What is nitrogen?

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Answer:

the constant temperature will be 12 .F bec in places it is cold

Atoms of most nonmetallic elements achieve noble-gas electron configurations by gaining electrons to become anions or a negatively charged ions.

An atom is a particle of matter that unambiguously defines a element. an atom consists of a central nucleus that's enclosed by one or additional charged electrons. The nucleus is charged and contains one or additional comparatively significant particles referred to as protons and neutrons.

Anions ar ions that ar charged. Ions ar charged atoms or molecules. If a balanced atom loses one or additional electrons, it'll become a charged ion. If a balanced atom gains one or additional electrons, it'll become a negatively charged ion.

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Based on the given reactions, the compounds are as follows:

A: The specific product formed from the reaction between prop-1-yne and either 2HBr or H2O2.

B: The product formed when compound A reacts with 2H2O.

C: The product formed when compound B reacts with K2CO3(aq).

D: The product formed from the heat-induced reaction of compound C.

E: The product formed when compound D reacts with HBr.

Based on the given reactions, let's analyze the compounds involved:

Reaction 1: prop-1-yne + 2HBr/H2O2 = A

The reactant prop-1-yne reacts with either 2HBr or H2O2 to form compound A. The specific product formed will depend on the reaction conditions.

Reaction 2: A + 2H2O = B

Compound A reacts with 2H2O (water) to form compound B.

Reaction 3: B + K2CO3(aq) = C

Compound B reacts with K2CO3(aq) (potassium carbonate dissolved in water) to form compound C.

Reaction 4: C + heat = D

Compound C undergoes a heat-induced reaction to form compound D.

Reaction 5: D + HBr = E

Compound D reacts with HBr (hydrobromic acid) to form compound E.

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Answer:

Fission

1.Uranium-235 decays naturally, by alpha decay. Write the balanced decay equation below. (5 points)

235/92 U = 231/90 Th + 4/2 He (i couldn't type the arrow thingy)

2.Uranium-235 has a half-life of about 700 million years. If 1 kg of U-235 is put on a shelf in a laboratory, how much of it will be left after 700 million years? (5 points)

1/2 kg of u-235 I think

3.Uranium-235 is a popular choice of fuel for nuclear reactors. But U-235 doesn't always fission the same way. Below are three ways it can split. Complete the nuclear equations so they balance. (6 points)

it can split into Be-56, Pu-52, and un 36.

4. Instead of allowing 1 kg of U-235 to decay naturally, imagine it is used as fuel in a nuclear

reactor. It is bombarded with neutrons, causing it all to fission in a matter of days. After 1 kg of U-235 undergoes fission, the mass of the products is 8.4 x 10-4 kg less than the initial 1 kg. How much energy was produced by the fission of 1 kg of U-235? (Hint: Use Einstein's equation, E = mc2, where E is energy in Joules, m is mass in kilograms, and c is the speed of light, 3 x 108 m/s.) (8 points)

Energy = mc2

Energy = (8.4 x 10^- 4) (3 x 10^8) ^2

Energy = 7.56 x 10^13  

there will be about 75600000000000 or 7.56 x 10^13 joules of energy produced by the fission of 1 kilogram of uranium 235  

(fact: this one problem alone took me 20 min of checking and rechecking and redoing and starting over to do, and I'm still pretty sure I got the number of 0's at the end wrong lol, though lucky for me I'm in honor's algebra so it didn't take me like 2 years to find the answer UWU)

Fusion

5.The fusion of two hydrogen isotopes is shown below. Complete the nuclear equation so it balances. (5 points)

2/1 H +2/1 H = 4/2 He + 1/0 N

wow this actually makes sense now

6.If 1 kg of fuel is used in the above fusion reaction, the resulting helium has a mass of 0.993 kg. In other words, 0.007 kg of mass is converted to energy. How much energy is produced by the fusion of 1 kg of hydrogen? (Hint: Use Einstein's equation, E = mc2, where E is energy in Joules, m is mass in kilograms, and c is the speed of light, 3 x 108 m/s.) (6 points)

6.3 x 10^14 joules of energy

Alternative Energy

7.Hydrogen fuel cells combine hydrogen and oxygen to produce water and energy. Assume 1 kg of fuel is used, and the mass of the water produced is 1.10 x 10-11 kg. How much energy is produced by this fuel cell? (Hint: Use E = mc2.) (7 points)

5.76 x 10^7 joules of energy.

Comparison

8.Complete the following table and questions. (8 points)

Reaction      Mass "Lost"   Energy Produced

Fission of 1 kg of U-235   1/2 kg     7.56 x 10^13 joules

Fusion of 1 kg of hydrogen   1/3 kg     6.3 x 10^13 joules

Fuel cell with 1 kg of hydrogen and oxygen  1/3 kg   5.4 x 10^13 joules

Which type of reaction "loses" the most mass?

the fission reaction of 1 kilogram of uranium 235

Which type of reaction produces the most energy? Why?

also the fission reaction of 1 kilogram of uranium 235, one reason that I think it is the reaction that produces more energy than the two other reactions is because of its "mass lost" since it lost 1/6 more mass than the other two reactions, or it might just be the elements that they use since they used uranium for fission, hydrogen for fusion, and hydrogen and oxygen for cell fueling.

Explanation:

Answer:

orbital shape.

Explanation:

1) There are four quantum numbers to describe the electrons. These are:

i) Principal quantum number (n)

ii) Azimuthal quantum number (ℓ), also called angular momentum quantum number.

iii) Magnetic quantum number (m)

iv) Spin quantum number (s)

2) The principal quantum number tells the main energy level. It can be 1, 2, 3, 4, 5, 6, 7. It is related to the orbital size. 1 is a small orbital, 7 is a big orbital.

2) The Azimuthal quantum number (ℓ) or angular momentum quantum number may be a number between 0 and n - 1.

It tells the kind of orbital, which is its shape

The correspondence is:

0 = s orbital,

1 = p orbital,

2 = d orbital,

3 = f orbital.

3) Magnetic quantum number (m) tells the orientation. It can be from - ℓ to + ℓ

For example when ℓ = 1, the orbital is p, and the magnetic quantum number may be -1, 0, or +1, which corresponds to px, py, pz: the orientation of the p orbital in the space.

4) Spin quantum number (s) can be either +1/2 or -1/2.

JM~ Hope this helps you out

The equation C2H4(g) + H2(g) + C2H6(g) → Caco3(s) + Cao(s) + CO2(g) shows an increase in entropy due to the formation of a gas as a product. Option A

In this equation, the reactants on the left-hand side consist of gases (C2H4 and H2), while the products on the right-hand side include a solid (Caco3) and a gas (CO2).

When a reaction involves a change from gaseous to solid or liquid states, there is typically a decrease in entropy because the particles become more ordered and constrained in the solid or liquid phase.

Conversely, when a reaction involves the formation of gases, there is generally an increase in entropy because gases have higher degrees of molecular motion and greater freedom of movement compared to solids or liquids.

In the given equation, the reactants include three gaseous compounds (C2H4, H2, and C2H6), and one of the products is a gas (CO2). Therefore, the overall entropy of the system increases during this reaction.

The equation Fe(s) + S(s) → FeS(s) does not show an increase in entropy. Both the reactants (Fe and S) and the product (FeS) are solids. Since solids have lower entropy compared to gases or liquids, the entropy of the system does not increase in this reaction. Option A

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If the gas is heated to 73.2 °C at constant volume 253.7 mmHg will its new pressure.

The rule that states that the sum of the absolute temperature of the gas and the universal gas constant is equal to the product of the pressure and volume of a single gramme of an ideal gas.

Using the ideal gas law, we may assume that hydrogen is acting optimally as follows:

As the gas is being heated solely and the volume is not changing, thus, n and V are constant and hence we may state

(P1V1) / T1 = (P2V2) / T2

P1 / T1 = P2 / T2

We can then plug in the given values and solve for P2:

P1 = 237.46 mmHg

T1 = 50.6 + 273.15 = 323.75 K (temperature in Kelvin)

T2 = 73.2 + 273.15 = 346.35 K

P2 = P1 * T2 / T1

P2 = 237.46 * 346.35 / 323.75

P2 = 253.7 mmHg.

If the gas is heated to 73.2 °C at constant volume 253.7 mmHg will its new pressure.

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Answer:

There are at least eight forms of carbon: amorphous, graphite, diamond, fullerenes, aggregated diamond nanorods, carbon nanofoam, glassy carbon, and linear acetylenic carbon.

Explanation:

Answer:

40.0L of SO2 are produced

Explanation:

To solve this question we need to find the moles of O2 using PV = nRT in order to find the moles. Thus, we can find the limiting reactant and the moles (And volume) of SO2 produced as follows:

Moles O2:

n = PV/RT

n = 1.20atm*55.0L / 0.082atmL/molK*358K

n = 2.25 moles of O2.

Clearly, limiting reactant is O2.

The moles of SO2 produced are:

2.25 moles of O2 * (8mol SO2 / 11mol O2) = 1.6351 moles SO2

Volume SO2:

V = nRT/P

V = 1.6351 moles SO2*0.082atmL/molK*358K / 1.20atm

V = 40.0L of SO2 are produced

Answer:

Isothermal compressibility is different from isentropic compressibility by temperature instead of entropy.

Explanation:

Isothermal compressibility refers to that type of compressibility where volume change takes place at constant temperature whereas isentropic compressibility refers to that in which volume change takes place at constant entropy. Entropy is the measure of a thermal energy of the system per unit temperature that is unavailable for doing useful work.

The energy of interaction for the linear arrangement of ions shown in the diagram below is 4.44 * 10⁻⁵⁸ J.

The total energy of interaction is the sum of the interaction energies for the individual pairs of ions.

The energy of interaction of the individual pairs is given below as follows:

V = 2.31 * 10⁻¹⁹ * Q₁ * Q₂ / r

where;

Q₁ = 1.602 * 10⁻¹⁹ coulombs.

Q₂ = 1.602 * 10⁻¹⁹ coulombs

r is the distance in nm

The total energy of interaction of the charges shown in the given arrangement will be 3V.

V = 2.31 * 10⁻¹⁹ * 1.602 * 10⁻¹⁹ * 1.602 * 10⁻¹⁹ / 0.4

V = 1.48 * 10⁻⁵⁸ J

3V = 4.44 * 10⁻⁵⁸ J

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From the calculation, the  maximum wavelength of photon that will eject a ground state electron from a hydrogen atom is 9.5 * 10^-8 m.

We know that the hydrogen atom has electrons that are in it at different energy levels. The lowest energy level of the photon is what we call the ground state of the electron.

The energy of the ground state of the hydrogen atom has an energy of about 13.6eV or 2.08 * 10^-18 J. Then we know that;

E = hc/λ

E = energy of the photon

h = Plank's constant

c = Speed of ight

λ = wavelength

λ = hc/E

λ = 6.6 * 10^-34 * 3 * 10^8/ 2.08 * 10^-18

λ = 9.5 * 10^-8 m

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Explanation:

The balanced chemical equation for the reaction between permanganate (MnO4-) and oxalic acid (H2C2O4) in acidic solution is:

5 H2C2O4 + 2 MnO4- + 6 H+ → 2 Mn2+ + 10 CO2 + 8 H2O

From the balanced equation, we can see that 2 moles of permanganate (MnO4-) react with 5 moles of oxalic acid (H2C2O4). Therefore, the number of moles of permanganate used in the titration is:

moles of MnO4- = (1.000 x 10^-3 mol H2C2O4) x (2 mol MnO4- / 5 mol H2C2O4) = 0.400 x 10^-3 mol MnO4-

The volume of the permanganate solution used in the titration is 37.61 mL = 0.03761 L. Therefore, the concentration of the permanganate solution is:

Concentration = moles of MnO4- / volume of solution used

Concentration = (0.400 x 10^-3 mol) / (0.03761 L)

Concentration = 0.0106 M

Therefore, the concentration of the permanganate solution is 0.0106 M (molarity).

At 2861 degree Celsius the iron begins to boil. At 1,538 °C the substance begins to melt.

The melting point is the point at which the liquid and solid forms of a solid can exist in equilibrium. It can also be defined as the point at which a solid changes into a liquid under normal atmospheric pressure.

The equilibrium point at which water vapor, liquid water, and solid ice can exist in equilibrium is the only point at which the pressure and temperature of water vapor are the same. The equilibrium point of water vapor is the point at which the partial vapor pressure is the same as that of liquid water at the exact temperature of 273.1600 K.

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N₂0₄ is the formula represents the binary molecular compound dinitrogen tetroxide. Therefore, option B is correct.

Binary molecular compounds are made up of exactly two nonmetal elements. HF, NO2, and P2O5 are a few examples. It is extremely simple to name binary molecular compounds. The first element is given its element name, followed by ide; the second element is given its root (hydr, bor, carb, ox, fluor, etc.).

In N₂0₄ molecule there are two nitrogen atoms at the suffix so, it is binary and in oxygen atom its suffix is 4 so, it is tetroxide. Therefore, N₂0₄ is the formula represents the binary molecular compound dinitrogen tetroxide.

Thus, option B is correct.

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A is the correct answer

Answer:

The correct option is C.

The respiratory and digestive systems work together

to make usable ATP energy for cells.

Explanation:

DIGESTIVE SYSTEM is the System the body that help to breakdown compound molecules into smaller pieces that can easily by absorbed by the body hence release nutrients and ATP. Energy are stored as glucose and resuable as ATP.

RESPIRATION is a process whereby oxygen is inhaled and it help to breakdown large compounds to release energy (ATP) and carbon dioxide is released. Both system work together to release ATP for cells.

Therefore , The respiratory and digestive systems work together

to make usable ATP energy for cells. Is the correct option.

Answer:

Condensation

Explanation:

Zoe is quite keen to have noticed what we call condensation. Air contains many components, one of those being water vapor. Like how sugar is soluble in water, water can be said to be "soluble" in air. Water will evaporate into the air to a certain extent. The higher the temperature of the air, the more water the air can hold. If the air has more water that it can hold (potentially because of a temperature decrease), the extra water will come out of the air. Zoe's water bottle was cold, and because the air around Zoe's bottle had cooled down, the air can not hold as much water as it could when it was warm, so the air deposited the extra water in the form of liquid water onto the bottle, giving the illusion that her bottle was sweating.

Answer:

2.5g

Explanation:

When the reaction goes into completion, they will produce 2.5g. This is complement the law of conservation of mass.

According to the law of conservation of mass "in a chemical reaction, matter is neither created nor destroyed but transformed from one form to another".

Answer:

d) Evaporation.

Explanation:

The process that converts a solid directly to gas is called Sublimation.

Answer:

\(\huge\boxed{\sf M = 0.06\ M}\)

Explanation:

No. of moles = n = 0.03 mol

Volume = v = 500 ml = 0.5 L

Molarity = M = ?

M = n / v

Put the given data in the above formula.

M = 0.03 / 0.5

\(\rule[225]{225}{2}\)

Answer:

Calcium hydride

Explanation:

Answer:

x/2

Explanation:

X = 2 molecules of H2

For 2 molecules of H2, there's only 1 molecule of O2. Meaning, there's twice the amount of H2, so O2 = x/2 molecules.

I hope I'm understanding this question right.