Am I correct?
As gravity/distance increases between two objects, the gravitational pull between them weakens/strengthens

Answer:

My lovely people the answer is SOLAR

Explanation:

i just know

The type of energy that uses the photoelectric effect is solar energy. Therefore, the correct option is option B.

When light strikes a material surface, the photoelectric effect takes place, which results in the emission of electrons. Albert Einstein made this intriguing discovery in 1905, and it was essential in the development of quantum physics and our comprehension of the nature of light. The fundamental principle underlying the photoelectric effect is that light is made up of small energy packets known as photons. A photon's energy can be transferred to an electron in a solid or atom when it interacts with those structures. The type of energy that uses the photoelectric effect is solar energy.

Therefore, the correct option is option B.

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Burning coal produces a large amount of energy. This statement is false about coal. Therefore, option D is correct.

In the United States, coal is primarily used as a fuel to generate electricity. Bituminous coal, subbituminous coal, or lignite are burned in coal-fired power plants. The heat generated by coal combustion is used to convert water into high-pressure steam, which drives a turbine and generates electricity.

Carbon is found in all living things, including humans. When coal is burned, the carbon in the coal combines with the oxygen in the air to form carbon dioxide. Carbon dioxide (CO2) is a colorless and odorless gas, but it is one of several gases in the atmosphere that can trap the earth's heat.

Thus, option D is correct.

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Answer: you can't really balance it doesn't make anything

Explanation:

Schrodinger's Quantum Mechanical Model, which is currently recognised by modern science, is the electron model. The electron cloud model is another name for this one.

The term "electron cloud" refers to the current atomic structure model. A physicist from Austria named Edwin Schrodinger argued that electrons do not follow static or permanent trajectories.

The contemporary atomic model, often known as the cloud model, depicts atoms as having a nucleus made up of protons and neutrons and a diffuse gradient or cloud surrounding it that is made up of electrons. Because electron activity is probabilistic, electrons are often depicted as clouds.

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There are two types of chemical compound one is covalent compound and other is ionic compound, covalent compound formed by sharing of electron and ionic compound formed by complete transfer of electron. Therefore, blanks can be filled with the knowledge of types of chemical compound.

Chemical Compound is a combination of molecule, Molecule forms by combination of element and element forms by combination of atoms in fixed proportion.

An ionic compound is a metal and nonmetal combined compound.  Ionic compound are very hard. They have high melting and boiling point because of strong ion bond. Covalent compounds are formed by elements whose electronegativity difference is null. These compounds have low melting and boiling point.

Therefore, blanks can be filled with the knowledge of types of chemical compound.

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Based on the given data, the amount of products from 5.00 g of KClO₃ is:

The decomposition of KClO₃ is given by the equation below:

2 KClO₃  -----> 2 KCl + 3 O₂

2 moles of KClO₃ produces 2 moles of KCl and 3 moles of O₂

Molar mass of KClO₃ is 122.5 g/mol

molar mass of KCl = 74.5 g

molar mass of O₂ = 32 g

Moles of KClO₃ in 5.00 g = 5.00/122.5

For KCl

a. moles: 0.04 moles of KClO₃ will produce 0.04 moles of KCl

b. mass of KCl = 0.04 * 74.5 = 2.98 g KCl

c. number of molecules of KCl = 0.04 * 6.02 * 10²³ = 2.41 * 10²² molecules of KCl

For O₂:

a. moles of O₂; 0.04 moles of KClO₃ will produce = 0.06 moles of O₂.

b. mass of O₂ = 0.06 * 32 g = 1.92 g of O₂

c. number of molecules: 0.06 * 6.02 * 10²³ = 3.61 * 10²² molecules of O₂

Therefore, the amount of products from 5.00 g of KClO₃ is:

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Answer:

Atom 3

Explanation:

Because it has electronic configuration of 10 which it is an atomic number of neon. And neon is a gas which is stable, hence does not react

At equilibrium, the number of moles of \(Cl_2\) (g) will be 0.2025 mol.

1: Write the balanced chemical equation:

\(C_O\)(g) + \(Cl_2\)(g) ⟶ \(C_OCl_2\)(g)

2: Set up an ICE table to track the changes in moles of the substances involved in the reaction.

Initial:

\(C_O\)(g) = 0.3500 mol

\(Cl_2\)(g) = 0.05500 mol

\(C_OCl_2\)(g) = 0 mol

Change:

\(C_O\)(g) = -x

\(Cl_2\)(g) = -x

\(C_OCl_2\)(g) = +x

Equilibrium:

\(C_O\)(g) = 0.3500 - x mol

\(Cl_2\)(g) = 0.05500 - x mol

\(C_OCl_2\)(g) = x mol

3: Write the expression for the equilibrium constant (Kc) using the concentrations of the species involved:

Kc = [\(C_OCl_2\)(g)] / [\(C_O\)(g)] * [\(Cl_2\)(g)]

4: Substitute the given equilibrium constant (Kc) value into the expression:

1.2 x \(10^3\) = x / (0.3500 - x) * (0.05500 - x)

5: Solve the equation for x. Rearrange the equation to obtain a quadratic equation:

1.2 x \(10^3\) * (0.3500 - x) * (0.05500 - x) = x

6: Simplify and solve the quadratic equation. This can be done by multiplying out the terms, rearranging the equation to standard quadratic form, and then using the quadratic formula.

7: After solving the quadratic equation, you will find two possible values for x. However, since the number of moles cannot be negative, we discard the negative solution.

8: The positive value of x represents the number of moles of \(Cl_2\)(g) at equilibrium. Substitute the value of x into the expression for \(Cl_2\)(g):

\(Cl_2\)(g) = 0.05500 - x

9: Calculate the value of \(Cl_2\)(g) at equilibrium:

\(Cl_2\)(g) = 0.05500 - x

\(Cl_2\)(g) = 0.05500 - (positive value of x)

10: Calculate the final value of \(Cl_2\) (g) at equilibrium to get the answer.

Therefore, at equilibrium, the number of moles of \(Cl_2\) (g) will be 0.2025 mol.

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Answer:

d. 2500

Explanation:

In a kinetic study with 3 different reactants, you change concentrations of the reactants to see how this concentration affects rate of reaction. General law is:

v = k [A]ᵃ [B]ᵇ [C]ⁿ

If you see 1 and 3 experiments, the concentration of C change from 0.600M to 0.200M but reaction rate doesn't change, thus n=0:

v = k [A]ᵃ [B]ᵇ [C]⁰

v = k [A]ᵃ [B]ᵇ×1

Now, reaction 2 and reaction 4 change B from 0.400M to 0.200M having the other reactants constant. When B is duplicated, rate increase 4 times. That means b = 2:

v = k [A]ᵃ [B]ᵇ

v = k [A]ᵃ [B]²

Finally, if you see 3 and 4 reactions, A change from 0.200M to 0.600M and the reaction rate change from 15.0 to 5.0, That means if the concentration of A is triplicated, reaction rate will be triplicated to. Thus a=1:

v = k [A]ᵃ [B]²

v = k [A] [B]²

Relpacing this equation in any experiment (Experiment 5, for example):

20.0 = k [0.200] [0.200]²

2500 = k

That means right answer is:

Answer:

Heat transfer always goes from hot to cold.

Answer:

An Flammable is the answer                                

Answer:

Shake well

Explanation:

It is physical

Answer:

okay

Explanation:

eheu3u2u9q8skee gg uwiqj292 in dn ii nwkedd

Answer:

ok ok i see you

Explanation:

(but you spelled beautiful and handsome wrong just saying for the next time you wanna use that XD)

Answer:The plates are not fixed but are constantly moving atop a layer of solid and molten rock called the mantle. The Ring of Fire is a string of volcanoes and sites of seismic activity, or earthquakes, around the edges of the Pacific Ocean. ... A hotspot is a place in the middle of a tectonic plate where hot magma rises.

Explanation:

Answer:

holaholaholaholaholaholaholahola

The volume occupied by the oxygen gas at a pressure of 210 kPa and a temperature of 50°C is 0.126 liters, rounded to three significant figures.

To calculate the volume occupied by the oxygen gas at a pressure of 210 kPa and a temperature of 50°C, we can use the ideal gas law equation:

PV = nRT

where:

P = pressure

V = volume

n = number of moles

R = ideal gas constant

T = temperature

First, we need to convert the given temperature from Celsius to Kelvin by adding 273.15:

T = 50°C + 273.15 = 323.15 K

Next, we rearrange the ideal gas law equation to solve for volume:

V = (nRT) / P

To find the number of moles (n), we can use the answer from question 27, which is the mass of oxygen gas:

m = 32 g

Using the molar mass of oxygen (O₂) which is approximately 32 g/mol, we can calculate the number of moles:

n = m / M = 32 g / 32 g/mol = 1 mol

Now we have all the values needed to calculate the volume:

V = (1 mol * 8.314 J/(mol*K) * 323.15 K) / 210,000 Pa

Using the ideal gas constant (R) of 8.314 J/(mol*K) and the pressure of 210 kPa (which is equivalent to 210,000 Pa), we can substitute these values into the equation and solve for volume.

V = 0.126 liters.

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The completed sentence is given as follows:

As more solvent is added, more dissolves. As some of the solute particles collide with the solid surface, it rejoins the solid crystal.

When maximum solubility is reached, particles are returning to the solid form at the same rate at which they are going into the solution.

Saltwater: Salt: Solvent
Water: Solute

Saltwater- Mixture - Uniform - but, no definite shape. Salt dissolves in water. Salt is best described as a solute.
Soluble: Dissolving

Aqueous Solutions: solutions in which water is the solvent. Water: the universal solvent.

Water is known as the "universal solvent" because it dissolves more compounds than any other liquid. This is critical for all living things on the planet.

It implies that water transports vital chemicals, minerals, and nutrients everywhere it travels, whether through the air, the earth, or our bodies.

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Answer:

factors that effect equillibrium are

temprature

pressure

concentrations of reactants

continuous removal of products

catalyst

Explanation:

The concept half life is used here to determine the mass of 'A' remaining after 0.731 min. The rate constant of a reaction is defined as the rate of the reaction when the molar concentration of each of the reactants is unity. The mass of A remaining is 5.163 g.

The half life period of a reaction is defined as the time in which the concentration of a reactant is reduced to half of its initial concentration. The expression for half life period of a first order reaction is:

\(t _{1} /_{2} = 0.693 / k\)

k - rate constant

k = 0.693 / 0.0459 = 15.098 s

Divide by 60 to convert half life into minutes.

15.098 s = 0.251 minutes

The number of half lives that have past is:

0.731 min / 0.251 min = 2.912 ≈ 3

Initial mass / number of half lives = 15.49 / 3 = 5.163 g

Thus the mass of A remaining after 0.731 min is 5.163 g.

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Answer:

B.     Warm water rises within the pot.?

Explanation

There wasn't enough information given for me to safely determine the correct answer.

Answer:

It must have sunlight and water and neutrants and be fertilized

Explanation:

31.7 g of water formation in the given reaction releases 783.02 kJ of heat energy.

The change in heat in the given equation is -890.8 kJ/mol. This means that when one mole of CH4 reacts with 2 moles of O2, it produces one mole of CO2 and 2 moles of H2O while releasing 890.8 kJ of heat energy.Now, we have to find out how much heat energy will be released when 31.7 g of water is formed. To do this, we need to first calculate the number of moles of water formed from 31.7 g of H2O.Molar mass of H2O = 2 × 1.008 + 15.999 = 18.015 g/molNumber of moles of H2O = 31.7 g / 18.015 g/mol = 1.759 molNow we know that 2 moles of H2O are formed when 1 mole of CH4 reacts. Therefore, the number of moles of CH4 required to produce 1.759 mol of H2O will be:1 mole of CH4 : 2 moles of H2Ox moles of CH4 : 1.759 moles of H2Ox = 1.759/2 = 0.8795 molSo, 0.8795 moles of CH4 are required to produce 1.759 moles of H2O. And the heat released during the reaction of 0.8795 mol CH4 can be calculated using the given change in heat.ΔH = -890.8 kJ/molHeat released during the reaction of 0.8795 mol CH4= ΔH × number of moles= -890.8 kJ/mol × 0.8795 mol= -783.02 kJ.

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By the concept of calculating moles ,it can br concluded that the no. of atoms of phosphorus in 8.80mol of copper(II) phosphate is=1.06\(x10^{25}\)

A mole is defined as amount of substance containing as many as elementary entities that are there in atoms of exactly 12 g of carbon-12.Therefore we can say,1 mole of copper(II) phosphate, Cu3(PO4)2, contains three moles of copper(II) cations and two moles of phosphate anions.

Again 1mole of phosphate anions contains one mole of phosphorus and four moles of oxygen.Considering all these informations we can conclude that:1 mole of copper(II) phosphate contains 2 moles of Phosphorus

Accordingle the sample contains=(8.80\(x\)2) moles of Phosphorus

                                    =(17.6\(x\)Avogadro's constant) atoms of  Phosphorus

                                    =(17.6\(x\)6.022\(x\)\(10^{23}\)) atoms of  Phosphorus

                                    =1.06\(x10^{25}\) [approx] no. of Phosphorus atoms

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In 8.80 moles of copper(II) phosphate, there are approximately 1.06 x 10²⁵ atoms of phosphorus.

The number of atoms of phosphorus in a given amount of a compound can be calculated using the concept of mole in chemistry. Copper(II) phosphate is Cu3(PO4)2, containing 2 moles of phosphorus (P) for every 1 mole of the compound. Avogadro's number (6.022 x 10²³) gives the number of atoms in one mole.

So, if there are 8.80 moles of copper(II) phosphate, there would be 2 × 8.80 moles of phosphorus. Multiplying this by Avogadro's number gives the total number of phosphorus atoms.

Therefore, the number of phosphorus atoms is 2 × 8.80 × 6.022 x 10²³ = 1.06 x 10²⁵ atoms of phosphorus.

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Answer:

Natural causes are unintentional.

Explanation:

An example would be a wildfire. This natural disaster spreads quickly, especially in forests where wood burns easily. Destroying forests through burning causes nutrients to get depleted, and organisms die.

Answer:

A is the answer hope this helps if wrong I ont know

Answer:

\(m_{Pb(SO_4)_2}=1.996 g\)

Explanation:

Hello.

In this case, given the formula of the lead (IV) sulfate, we can compute its molar mass as shown below:

\(M_{Pb(SO_4)_2}=m_{Pb}+2*m_S+2*4*m_O\\\\M_{Pb(SO_4)_2}=207.2+2*32+2*4*16\\\\M_{Pb(SO_4)_2}=399.2g/mol\)

Thus, by applying the following mole-mass relationship, we obtain the mass of 0.005 moles of lead (IV) sulfate:

\(m_{Pb(SO_4)_2}=0.005mol*\frac{399.2g}{1mol} \\\\m_{Pb(SO_4)_2}=1.996 g\)

Best regards.

Answer: Mass number will be 14.

Explanation:

Given : 6 and 8 protons and neutrons.

Solution :

According to the formula of Atomic mass number,

Atomic mass number = protons+ neutrons

                                      = 6 + 8

                                      =  14

Answer:

Possibly, did you know that we never actually touch anyone as we are all just cells-?

Explanation:

I-

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