The electrolysis of water forms H, and Oy 2H2O → 2H, + O2 What is the percent yield of O, if 10.2 g of O, is produced from the decomposition of 170 g of H2O? Actualyield Use %Yield- Theoretical yield x 100 15.1% 33.8% 60.1% 67.6%

Answer:

Solutions can be solids dissolved in liquids. When you work with chemistry or even cook in your kitchen, you will usually be dissolving solids into liquids. Solutions can also be gases dissolved in liquids, such as carbonated water. There can also be gases in other gases and liquids in liquids.

Explanation:

Answer:

Final pressure = 362.7 Pa

Explanation:

Given that,

Initial volume, V₁ = 930 ml

Initial pressure P₁ = 156 Pa

Final volume, V₂ = 400 mL

We need to find the final pressure. We know that the relation between volume and pressure is inverse i.e.

[tex]V\propto \dfrac{1}{P}\\\\\dfrac{V_1}{V_2}=\dfrac{P_2}{P_1}\\\\P_2=\dfrac{V_1P_1}{V_2}\\\\P_2=\dfrac{930\times 156}{400}\\\\P_2=362.7\ Pa[/tex]

So, the final pressure is equal to 362.7 Pa.

Answer:

brainliest plss

Explanation:

Most hydrogen atoms have a nucleus with only a single proton. About 1 in 10,000 hydrogen nuclei, however, also has a neutron; this particular isotope is called deuterium. An extremely rare hydrogen isotope, tritium, has 1 proton and 2 neutrons in its nucleus. ... Most hydrogen atoms have only a proton in the nucleus

Answer:

Red

Explanation:

Answer:

No 1 is fission

while no 2 is fusion

Fission is splitting on nucleus while fusion is forming heavier nucleus with nuclei

The kind of nuclear reaction that occurs in the following reactions are:

i. nuclear fission

ii. nuclear fusion.

Nuclear reactions are that reactions in which a nucleus or nuclei collides with subatomic particles to form another, different nucleus. There are two types of collisions. Nuclear fission and nuclear fusion.

Nuclear fission is a process when large nuclei split and create small, numerous nuclei. It happens due to the instability of an atom. It split into two daughter nuclei.

Nuclear fusion is a process in which two or more small nuclei combine to create a large, heavy nucleus. The process releases a large amount of energy or can be absorbed.

Thus, the processes are i. nuclear fission

ii. nuclear fusion.

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Answer:

[tex]\Delta T=0.160\°C[/tex]

Explanation:

Hello there!

In this case, according to the following equation for the calculation of heat in this calorimetry problem:

[tex]Q=mC\Delta T[/tex]

It is possible for us to calculate to calculate the change in temperature for this process by solving for DT in the aforementioned equation:

[tex]\Delta T=\frac{Q}{mC}\\\\ \Delta T=\frac{125.7cal}{634.5g*1.241 cal/(g\°C)} \\\\ \Delta T=0.160\°C[/tex]

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Answer:

Explanation:

Answer:

True True False

Explanation:

Answer:

The gold foil experiment

El experimento de la lámina de oro

Explanation:

Answer:

if there would have been no decomposers on Earth, the whole of the Earth would have been filled with dead and decaying matter of plants and animals.

Explanation:

I hope this helps :3

Answer:  Imagine what would happen if there were no decomposers. Wastes and the remains of dead organisms would pile up and the nutrients within the waste and dead organisms would not be released back into the ecosystem. Producers would not have enough nutrients.

Explanation:

https://www.ck12.org/biology/consumers-and-decomposers/lesson/Consumers-and-Decomposers-MS-LS/#:~:text=Imagine%20what%20would%20happen%20if,would%20not%20have%20enough%20nutrients.

This is the site I got the info on, just so you know!  I hope this helps!

Answer:

D

Explanation:

In the Rb atom the valence electron is farther from its nucleus than the valence electron of Li is from its nucleus

Answer:

the answe would be (c) temperate continental

Explanation:

Answer:

a substance made by mixing other substances together.

Explanation:

A mixture is a substance made by mixing two or more substances together.

it will help. have a good night

Answer:

both the substances will evaporate

Explanation:

Explanation:

[tex]from \: boyle's \: law \\ P _{1} V _{1} = P _{2} V _{2} \\ 35 \times 11.2 = 64 \times V _{2} \\ V _{2} = \frac{35 \times 11.2}{64} \\ V _{2} = 6.125 \: L[/tex]

The volume of the gas is 6.13 l if it is increased to a pressure of 64.0 mm Hg.

Boyle's law is a gas law which states that at constant temperature, the pressure of a given quantity of a gas varies inversely with its volume occupied by it.  

According to the Boyle's Law:

PV = constant

Thus,

[tex]P_{1}V_{1} = P_{2} V_{2}[/tex]

where,

[tex]P_{1}[/tex] is the initial pressure

[tex]V_{1}[/tex] is the initial volume

[tex]P_{2}[/tex] is the final pressure

[tex]V_{2}[/tex] is the final volume

Now, put the values in above equation we get

[tex]P_{1} V_{1} = P_{2} V_{2}[/tex]

35.0 × 11.2 = 64.0 × [tex]V_{2}[/tex]

392 = 64.0 × [tex]V_{2}[/tex]

[tex]V_{2}[/tex] = [tex]\frac{392}{64}[/tex]

[tex]V_{2}[/tex] = 6.13 L

Thus, the volume of the gas is 6.13 l if it is increased to a pressure of 64.0 mm Hg.

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Explanation:

The triceps contract to allows the arm to extend and flex while throwing

Answer:

6.25 gram

Explanation:

Applying,

R = R'([tex]2^{a/n}[/tex])................ Equation 1

Where R = Original mass of the isotope, R' = mass of the isotope left after disintegration, a = Total time, n = half life.

make R' the subject of the equation

R' = R/([tex]2^{a/n}[/tex])................. Equation 2

From the question,

Given: R = 100 gram, a = 20 munites, n = 5 minutes.

Substitute these values into equation 2

R' = 100/([tex]2^{20/5}[/tex])

R' = 100/[tex]2^{4}[/tex]

R' = 100/16

R' = 6.25 gram

Answer:

C The water accepts a proton from the hydrogen chloride.

Explanation:

The equation given in this question where hydrogen chloride reacts with water is as follows:

HCI + H2O → CI- + H3O+

From this equation, hydrogen chloride (HCl) loses or donates hydrogen ion (H+) or proton to water (H2O), which accepts it to become hydronium ion. Hence, in a nutshell, water (H2O) accepts a proton (H+) from the hydrogen chloride (HCl) in this reaction.

Answer:

Carbon dioxide is held together by weak intermolecular forces (only London dispersion LD) and is a non-polar molecule. Because of this weak attraction, it exists as a gas. Water on the other hand is polar (dipole forces DP), and has a stronger hydrogen bond existing within it (in addition to LD). This makes it attract itself more than say carbon dioxide molecules, so it commonly exists as a liquid. Finally, salt like water is polar, and has ionic bonds that are even stronger than a hydrogen bond. This makes salt have a great attraction to itself, sticking together as a solid because its molecules cant easily be broken up.

Explanation:

These are the strongest intermolecular forces ranked from strongest to weakest.

1. Network Covalent

2. Ionic

3. Hydrogen Bonding

4. Dipole Dipole

5. London Dispersion

Answer:

a. 2HCl + 1Mg(OH)2 → 1MgCl2 + 2H2O

b. 1 mol MgCl2/ 1 mol Mg(OH)2

1 mol MgCl2/ 2 mol HCI

Explanation:

a. The reaction of an acid (HCl) with a base (Mg(OH)2) produce water (H2O) and the salt (MgCl2):

_HCl + _Mg(OH)2 → _MgCl2 + _H2O

To balance the Cl:

2HCl + _Mg(OH)2 → _MgCl2 + _H2O

To balance the oxygen:

2HCl + _Mg(OH)2 → _MgCl2 + 2H2O

The reaction is now balanced

2HCl + 1Mg(OH)2 → 1MgCl2 + 2H2O

b. Based on the balanced reaction, the moles ratios are:

1 mol MgCl2/ 1 mol Mg(OH)2

1 mol MgCl2/ 2 mol HCI

Reason:- The Mechanism of Diffusion In the case of food coloring in water, the water is the solvent while the food coloring is the solute. Once they've mixed, they make a solution. Diffusion takes time, though how much time depends on the kinetic energy of the molecules randomly bouncing among each other.

Answer:

6 mass

Explanation:

because the si unit of gram is mass

Answer:

B). 2

Explanation:

The atoms of hydrogen (H) present on both sides of the given equation

Zn + 2HCl → ZnCl2 + H2 are 2.

Atoms are the smallest fundamental unit of particle which can't be destroyed further by any chemical mean.

Hydrogen is the lightest element in the periodic table having molecular formula(H2) . It is combustible, tasteless, odorless, colorless gas

Equation in chemical science is the way to represent change in the conversion of reactants to product in reaction using symbols given by IUPAC.

The given reaction is

Zn + 2HCl → ZnCl2 + H2

There are two moles produces two moles of hydrogen, hence there are two atoms of hydrogen on both sides.

Hence, there are two atoms of hydrogen(H) are present on both sides of the equation.

Hence, option B is correct.

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Answer:

"A"

Explanation:

The magnetic dipole axis of the earth is tilted about 11½° from the rotation axis. This means the magnetic north pole and the geographic north pole are not in the same place. ...

They are also not the sam ehtings :

Magnetic axis is the straight line joining the two poles of a magnet (as the magnetic poles of the earth)

Rotational axis i think is the straight line that joines the north and the south pole of the  .earth .... NOTE: The earth is a bit tilted....

look at the daigram for reference.

The rotational axis of the Earth and its magnetic axis are separated by 11.5 degrees and are not one and the same.

The rotational axis is an imaginary line or axis through which any object rotates and revolves.

The angular momentum vector of the object is divided by the angular momentum magnitude to find the rotational axis of an object.

The rotational axis of the earth is 23.5 degrees.

Thus, the correct option is A.

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Answer:

NH3 is Ammonia Which is Hydrogen Bonding

HCL is hydrochloric acid which is Dipole Dipole

CH4 is Methane which is Dispersion

Answer:

As a wavelength increases in size, its frequency and energy (E) decrease. From these equations you may realize that as the frequency increases, the wavelength gets shorter. As the frequency decreases, the wavelength gets longer.

Explanation:

Answer: Infrared rays

Explanation:

Answer:

It is given that the mass of a man is 75 Kg in earth. Then his mass would be same in moon as mass of anything cannot be changed. The weight of the man in earth can be calculated by W=mg=75×9.8=735 N.