calculate the final velocity of each particle when they reach the negative plate, assuming they both started from rest

ANSWER

The new volume of the gas is 162.28L

EXPLANATION

Given that;

The initial temperature of the gas is 202K

The initial pressure of the gas is 1520 torr

The initial volume of the gas is 60.0L

The final temperature of the gas at STP is 273.15K

The final pressure of the gas at STP is 760 torr

Follow the steps below to find the final volume of the gas

Step 1; Write the general gas law equation

Step 2; Substitute the given data into the equation above to find the final volume of the gas

Therefore, the new volume of the gas is 162.28L

Answer:

\(V_2=4667mL\)

Explanation:

Hello there!

In this case, based on the given information, it is possible for us to provide an answer to this question by using the Boyle's law as directly proportional relationship between volume and pressure:

\(P_2V_2=P_1V_1\)

Thus, by solving for the final volume, V2, as required, we obtain the following:

\(V_2=\frac{P_1V_1}{P_2} \\\\V_2=\frac{5,000mL*742atm}{795atm}\\\\V_2=4667mL\)

Regards!

The "Wakanda speech," six weeks have passed, and the world is still in shock.

Thus, Global leaders and analysts were taken aback by King T'Challa's declaration at the United Nations General Assembly that the Kingdom of Wakanda is not a developing country of textiles, farms, and shepherds with a GDP per person of roughly $760 but rather a technological superpower and Wakanda speech.

The country's widespread employment of cutting-edge magnetic levitation trains, flying machines, opaque holograms, and spinal cord-healing beads has led to the coining of the phrase "uber-developed" nation.

The most watched video ever is currently "Welcome to the Future," an introduction video created by Wakanda's recently established Ministry of Foreign Affairs.

Thus, The "Wakanda speech," six weeks have passed, and the world is still in shock.

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The name for NaCl is Sodium chloride

Salt is defined as the chemical compound that contains both a positively charged cation.and negatively charged anion.

It is formed by the reaction of acid and base is a neutralisation reaction.

Examples of salt include:

Therefore another name for salt is common salt.

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The outermost of the six sun layers with the letters A, B, C, D, E, and F, layer F in the cross-sectional figure symbolises the corona.

The Sun's atmosphere's outermost region is called the corona. The brilliant brightness of the Sun's surface often obscures the corona. Without employing specialised equipment, it is challenging to see. A total solar eclipse, however, makes the corona visible.

The term "corona" refers to the topmost region of the Sun's atmosphere. It rises hundreds of kilometres above the Sun's surface and gradually changes into the solar wind, which travels across our solar system.

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The mass (in grams) of sodium carbonate, Na₂CO₃ required to produce 85 grams of barium carbonate, BaCO₃ is 45.7 grams

First, we shall observe the balanced equation to obtain useful information. This is shown below:

Na₂CO₃ + BaSO₄ -> BaCO₃ + Na₂SO₄

From the balanced equation above,

197 g of BaCO₃ were obtained from 106 g of Na₂CO₃

With the above information, we can obtain the mass of sodium carbonate, Na₂CO₃ required to produce 85 grams of barium carbonate, BaCO₃. This is illustrated below:

From the balanced equation above,

197 g of BaCO₃ were obtained from 106 g of Na₂CO₃

Therefore,

85 g of BaCO₃ will be obtain from = (85 × 106) / 197 = 45.7 g of Na₂CO₃

Thus, we can conclude from the above calculation that the mass of sodium carbonate, Na₂CO₃ required is 45.7 grams

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Answer:

Explanation:

40/ 180.2 x (-16 / 1 mole glucose)=-3.6 KJ

Answer:

233.3 times

Explanation:

The diameter of a carbon atom is 1.5 x 10^-10 meters, so the circumference of a carbon atom is pi x diameter = 3.14 x 1.5 x 10^-10 m = 4.71 x 10^-10 m

If you have 2 x 10^19 atoms in a small speck of carbon and all the atoms laid side by side, the total circumference of all the atoms would be 2 x 10^19 x 4.71 x 10^-10 = 9.42 x 10^9 meters.

The circumference of the earth at the equator is 40,075 km, so that is 40,075 x 1000 = 40,075,000 meters.

Divide the total circumference of all the atoms by the circumference of the Earth:

9.42 x 10^9 m / 40,075,000 m = 233.3 times

Therefore, the atoms from this speck of carbon would extend around the Earth 233.3 times if they laid side by side.

The equation that can be said to show incomplete combustion is option A

Unburned carbon particles and carbon monoxide (CO), as well as water vapor and other byproducts, are examples of incomplete combustion products that are produced when a fuel does not completely react with the oxygen that is present during the combustion process.

Complete combustion occurs when a fuel combines with oxygen in the presence of enough heat to produce the primary byproducts of carbon dioxide, water, and heat.

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Answer:

2.04x10⁻⁴ mol

Explanation:

First we convert 3.06x10⁻³ grams of glycine into moles of glycine, using its molar mass:

In order to calculate the number of hydrogen moles, we multiply the number of glycine moles by 5, as there are 5 hydrogen moles per glycine mol:

Answer:

p = 900 kg·m/s

Explanation:

Calculate momentum given mass and velocity:

P = M*V

p = 150*6

Answer:

The correct answer is:

(1) decreases 1 pH unit

Most biologically significant elements have low atomic masses and adhere to the octet rule.This rule states that an atom would be most secure when it has eight electrons in its outer, or valence, shell.

The hypothesis that main-group elements typically bind in a way that each atom gets eight electrons within its valence shell, providing it the same electrical configuration as just a noble gas, is reflected in the octet rule, a chemical rule of thumb.

Hydrogen, beryllium, and boron do not contain enough electrons to form an octet.In hydrogen, there is just one valence electron, and it has just one place where it can bond to another atom.

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The enthalpy of neutralization is  -53.6 kJ/mol

The  change in enthalpy per mole of water formed​ is 53.6 kJ/mol.

We have to note that the enthalpy is the heat that have been evolved or absorbed in a reaction. We can see that in this case, the reaction involved the combination of sodium hydroxide and nitric acid.

Number of moles of the reactants = 50/1000 L * 0.5 mol/dm³

= 0.025 moles

Total mass of the reactants = 50 g + 50 g = 100 g (Since the density of the solution is 1.0g/cm³)

The heat evolved = mcdT

m = mass of the solution

dT = temperature change

c = Heat capacity of the solution

H = 100 * 4.18 * ( 23.2 - 20)

H = 1.34 kJ

The heat evolved = - ( 1.34 kJ/0.025 moles)

= -53.6 kJ/mol

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Answer:

Zn

Explanation:

Answer:

It should be A the gravitational force on the moon is weaker than on Earth

Answer:

12 moles of CO₂.

Explanation:

We'll begin by writing the balanced equation for the reaction. This is illustrated below:

CO₂ + H₂O —> H₂CO₃

From the balanced equation above,

1 mole of CO₂ dissolves in water (H₂O) to produce 1 mole of H₂CO₃.

Finally, we shall determine the number of mole of CO₂ needed to produce 12 moles of H₂CO₃. This can be obtained as follow:

From the balanced equation above,

1 mole of CO₂ dissolves in water (H₂O) to produce 1 mole of H₂CO₃.

Therefore, 12 moles of CO₂ will also dissolves in water (H₂O) to produce 12 moles of H₂CO₃.

To find moles when given the molar mass, you can use the concept of molar mass as a conversion factor.Molar mass represents the mass of one mole of a substance, expressed in grams per mole (g/mol).

To calculate moles, divide the given mass of the substance by its molar mass. The equation is:

moles = mass / molar mass

For example, if you have 56 grams of carbon dioxide (CO2) and want to find the number of moles, you need to know the molar mass of CO2, which is approximately 44 g/mol. Using the equation above:

moles = 56 g / 44 g/mol

moles ≈ 1.27 mol

Therefore, there are approximately 1.27 moles of carbon dioxide in 56 grams.

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The theoretical yield of Fe is 335.1 g.

54.0 g of C is needed.

The volume of CO2 produced is 0.992 L.

198.05 g of CO2 was produced.

The percent yield of the reaction is 75.2%.

The balanced chemical equation for the reaction is:

2Fe2O3 + 3C → 4Fe + 3CO2

Using the equation, we can calculate the theoretical yield of Fe and the amount of C needed.

To calculate the theoretical yield of Fe:

Convert the given mass of Fe2O3 to moles:

480 g Fe2O3 x (1 mol Fe2O3/ 160 g Fe2O3) = 3.0 mol Fe2O3

Use stoichiometry to find the moles of Fe produced:

2 mol Fe2O3 → 4 mol Fe

3.0 mol Fe2O3 x (4 mol Fe / 2 mol Fe2O3) = 6.0 mol Fe

Convert moles of Fe to grams:

6.0 mol Fe x (55.85 g Fe / 1 mol Fe) = 335.1 g Fe

To calculate the amount of C needed:

Use stoichiometry to find the moles of C needed:

2 mol Fe2O3 → 3 mol C

3.0 mol Fe2O3 x (3 mol C / 2 mol Fe2O3) = 4.5 mol C

Convert moles of C to grams:

4.5 mol C x (12.01 g C / 1 mol C) = 54.0 g C

To find the volume of CO2 produced, we need to calculate the number of moles of CO2 produced using stoichiometry.

Use stoichiometry to find the moles of CO2 produced:

2 mol Fe2O3 → 3 mol CO2

3.0 mol Fe2O3 x (3 mol CO2 / 2 mol Fe2O3) = 4.5 mol CO2

Convert moles of CO2 to volume using the ideal gas law:

PV = nRT

V = nRT/P

V = (4.5 mol) (0.0821 L atm mol^-1 K^-1) (298 K) / (1 atm)

V = 0.992 L

To find the mass of CO2 produced:

Use the molar mass of CO2 to convert from moles to grams:

4.5 mol CO2 x (44.01 g CO2 / 1 mol CO2) = 198.05 g CO2

To calculate the percent yield of the reaction:

Use the given mass of Fe (252 g) and the theoretical yield of Fe (335.1 g) to calculate the percent yield:

Percent yield = (actual yield / theoretical yield) x 100%

Percent yield = (252 g / 335.1 g) x 100%

Percent yield = 75.2%

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The first equilibium is at 1.5 minutes.

This is where the concentrations of both reactants are constant.

We have that the weight in grams  gained

\(W=(\frac{1240}{\rho(ml/g)})*g\)

From the Question we are told that

Volume \(v= 1240 ml\)

Considering

Density of Beer =\rho

Generally the equation for the density   is mathematically given as

\(\rho=\frac{1240}{m(hg)}\)

\(m(g)=\frac{1240}{\rho(ml/g)}\)

Therefore

Weight

\(W=m*g\)

\(W=(\frac{1240}{\rho(ml/g)})*g\)

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The pH would be 3.16 because the formula for finding the pH from a H± ion is pH = -log [H±]

So with that formula, you first have to substitute the H± with your numbers which in this case is 6.9 × 10^-4.

It should like this:

pH = -log (6.9 × 10^-4)

And lastly, just calculate.

pH = 3.16

Hope that helps, do let me know if you need more help in understanding this!

Explanation:

It can take up to two years to become a pharmacy technician, depending on the education program you choose. In fact, most pharmacy certification programs can be in a year, or less than eight months.

Answer:

EDG 2020

Explanation:

It comes from older rocks,It forms from sediments,it is one of the main 3 rocks, con form from materials solidified from solution.

Answer:

It comes from older rocks.

It forms from sediments.

It is one of the three main types of rocks.

It can form from materials solidified from solutions,

Explanation:

Answer:

Explanation:

Elements with low electronegativities tend to lose electrons in chemical reactions and are found in the lower left corner of the periodic table.

Answer:

A

Explanation:

Answer:

a. KClO₃ ⇒ KCl + 1.5 O₂

b. Zn + H₂SO₄ ⇒ ZnSO₄ + H₂

c. CaCO₃ ⇒ CaO + CO₂

Explanation:

We will convert the following word equations into formula equations and then balance them using the trial and error method.

a. Potassium chlorate (I fixed a mistake here) ⇒ Potassium chloride + Oxygen

KClO₃ ⇒ KCl + O₂

We can balance this equation by multiplying O₂ by 1.5.

KClO₃ ⇒ KCl + 1.5 O₂

b. Zinc + Sulphuric acid ⇒ Zinc sulphate + Hydrogen

Zn + H₂SO₄ ⇒ ZnSO₄ + H₂

This equation is already balanced.

c. Calcium carbonate ⇒ calcium oxide + carbon dioxide

CaCO₃ ⇒ CaO + CO₂

This equation is already balanced.

The molarity of the NiSO₄ solution made by dissolving 38.81 grams of nickel (ii) sulfate, NiSO₄, in enough water to make 0.467 liters of solution is 0.535 M

First, we shall obtain the mole of 38.81 grams of nickel (ii) sulfate, NiSO₄. Details below:

Mole of NiSO₄ = mass / molar mass

= 38.81 / 154.75

= 0.25 mole

Now, we shall determine the molarity of the solution. Details below:

Molarity of solution = mole / volume

= 0.25 / 0.467

= 0.535 M

Thus, the molarity of the solution is 0.535 M

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