What is the total pressure in a 2.00 L container that holds 1.00g He, 14.0g CO, and 10.0g of NO at 27 degree?

Answer:

5 grams of sugar dissolve in 5 ml of water.

Answer:

limiting reagent is 02

mass of CO2 is 11g

Explanation:

the limiting reagent is the reagent which is consumed completely

no of mole of CH2 = m in g / molar mass

= 46.0/(12+2)

= 3.285 moles.

no of mole of O2 = 32/32

= 1 mole

from the reaction

1 mole of CH2 ==> 2 mol of O2

3.285 mol ==> 1/2 mol

3.285 mol ==> 0.5 mol

:. since O2 has the lowest mol , it's the limiting reagent

the limiting reagent mol will be used to find the no of mole of CH2

2 mol of O2==> 1 mol of CO2

0.5 mol ==> 0.5/2

0.25 mole of CO2

mass = 0.25 * ( 12+32)

= 11g

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The balanced equation for the reaction between solid calcium cyanide and liquid water to generate calcium hydroxide and hydrogen cyanide would be \(Ca(CN)_2 (s) + 2H_2O(l)-- > Ca(OH)_2 (aq) + 2HCN (aq)\)

The reaction between solid calcium cyanide and liquid water to generate calcium hydroxide and hydrogen cyanide would be written as follows:

The chemical formula of solid calcium cyanide = \(Ca (CN)_2 (s)\)

The chemical formula of liquid water = \(H_2O (l)\)

The chemical formula of calcium hydroxide in solution = \(Ca(OH)_2 (aq)\)

The chemical formula of hydrogen cyanide in solution = \(HCN (aq)\)

Bringing all the species together, the equation for the reaction would be:

But the above equation is not balanced. The number of hydrogen and cyanide atoms is not balanced. Balanced chemical equations always have an equal number of every atom in the reactants and in the products.

Thus, the balanced equation of the reaction would be;

\(Ca(CN)_2 (s) + 2H_2O(l)-- > Ca(OH)_2 (aq) + 2HCN (aq)\)

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The wavelength that is associated with the transition is  2145 nm.

We know that the wavelength can be obtained from the use of the Rydberg equation and we know that the Bohr's mode lets us know that an electron can move from from a higher to a lower energy level.

Let us write;

1/λ = RH(1/\(n_{2} ^2\) - 1/\(n_{1} ^2\))

λ = wavelength

RH = Rydberg constant

\(n_{1}\) = initial level

\(n_{2}\) = final level

Then;

1/λ = 1.097 * 10^7 (1/4^2 - 1/7^2)

1/λ = 1.097 * 10^7 ( 0.0625 - 0.020)

λ =  2145 nm

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The reaction here is a beta decay and the missing component is 137/56 Ba

Beta decay is a type of radioactive decay in which an unstable atomic nucleus releases a beta particle, which is an electron or a positron, in order to become more stable.

Beta decay occurs when the neutron-to-proton ratio in the nucleus is too high, and the nucleus transforms into a more stable configuration by releasing a beta particle.

Thus the beta decay would give a daughter nuclei that has the mass number greater than that of the parent by one unit.

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The atomic cation with +1 charge with the following configuration:

1s22s22p63s23p6

Is Potassium (K+), remember potassium have 19 electrons in its neutral state, when if losses one electrons it becomes + with one less electron, meaning it will have 18 electrons as a cation.

There are 2 electrons in 1s orbital as it can be seen from the electron configuration.

Assuming that the volume of the tyre does not change, and that air behaves as an ideal gas, find the gauge pressure of the air in the tyre.

What is volume ?

Volume is nothing but the quantity of area the container fills or holds. Volume is always in a dimensional space, especially three. A solid always has a definite shape. Volume is anything to be held, like solid, liquid, or gas. The volume should be in ml, l, and so on. Finding the volume to know the weight and depth of the container.

What is pressure ?

The pressure is nothing but the vital force applied to the object or particle. Pressure calculates how much force will be gone or extended to the object. Pressure is the force that is perpendicular to the power of extension. The standard unit of pressure is the pascal (pa). The formula for pressure, p= F/ A, p= pressure, F= magnitude, A= area of the surface

pressure is the scalar quantity. Pressure is also expressed in the term atmospheric pressure, atm.

Therefore, Assuming that the volume of the tyre does not change, and that air behaves as an ideal gas, find the gauge pressure of the air in the tyre.

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Answer:

Animals obtain energy from the food they consume , using that energy to maintain body temperature and perform other metabolic functions. Glucose, found in the food animals eat ,is broken down during the process of cellular respiration into energy source called ATP.

Answer:

A

Explanation:

Answer: a

Explanation: one that changes the color of a rabbit, allowing it to hide from predators.

We can see that an atom with 14 protons, 14 neutrons, and 16 electrons is unstable, and has a -2 charge.

So the correct option is the third one.

An atom with 14 protons, 14 neutrons, and 16 electrons is not stable. The number of protons in an atom, also known as its atomic number, determines its element and its chemical properties. In this case, the atom has 14 protons, which corresponds to the element silicon (Si) on the periodic table.

For an atom to be stable, it should have a balanced number of protons and electrons. Electrons are negatively charged particles that orbit the nucleus of an atom in energy levels or electron shells. The number of electrons in a stable atom should be equal to the number of protons, resulting in a neutral charge overall.

In this case, the atom has 14 protons and 16 electrons, which means it has two more electrons than protons, resulting in a net charge of -2. This is an example of an ion.

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Answer:

Explanation:

To calculate the mass of Li3PO4 needed to prepare 500 mL of a solution having a lithium ion concentration of 0.175 M is to use the density of the solution. First, we need to calculate the density of the solution. The density of the solution is equal to the mass of Li3PO4 needed divided by its volume in Liters. We know that the mass of Li3PO4 needed is 8.94 g and the volume of the solution is 500 mL, which is equivalent to 0.5 L. Therefore, the density of the solution is 8.94 g/0.5 L = 17.88 g/L. We can then calculate the mass of Li3PO4 needed by multiplying the density of the solution by the volume of the solution. The mass of Li3PO4 needed is therefore 17.88 g/L x 0.5 L = 8.94 g

Answer:

D. Ultraviolet light should have a short wavelength, not a long wavelength.

Explanation:

just took the quiz on Ed

The mistake Gino made is, ultraviolet light should have a short wavelength, not a long wavelength.

Electromagnetic spectrum is the arrangement of electromagnetic radiations in the order of increasing frequency or decreasing wavelength.

Examples electromagnetic radiations based on increasing wavelength  include;

Thus, the mistake Gino made is, ultraviolet light should have a short wavelength, not a long wavelength.

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According to the forces of attraction , as water passes on in water cycle its state changes from liquid to vapor and solid in form of ice and then back to liquid.

Forces of attraction  is a force by which atoms in a molecule  combine. it is basically an attractive force in nature.  It can act between an ion  and an atom as well.It varies for different  states  of matter that is solids, liquids and gases.

The forces of attraction are maximum in solids as  the molecules present in solid are tightly held while it is minimum in gases as the molecules are far apart . The forces of attraction in liquids is intermediate of solids and gases.

The physical properties such as melting point, boiling point, density  are all dependent on forces of attraction which exists in the substances.

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The number of grams in 0.2 moles of water is 3.602grams.

The mass of a substance can be calculated by multiplying the number of moles of the substance by its molar mass as follows:

Mass = molar mass × no. of moles

According to this question, there are 0.2 moles in water. Water has a molar mass of 18.01g/mol. The mass can be calculated as follows:

Mass = 0.2 moles × 18.01g/mol

Mass = 3.602grams.

Therefore, 3.602 grams is the mass of the water molecule.

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Answer:

hi

Explanation:

Answer: 4

Explanation: because the zero doesn't count

Answer:

Br-CH2-CH(CH3)2-C(Cl)H-CH(CH3)2-CHO

Explanation:

The molecule has a total of 14 carbon atoms, 13 hydrogen atoms, and 1 bromine atom. The carbon atoms are arranged in a chain with a methyl group attached to the second carbon atom, a chlorine atom attached to the third carbon atom, and two methyl groups attached to the fourth carbon atom. The fifth carbon atom has a carbonyl group attached to it.

The molecule is an aldehyde, which means that it has a carbonyl group (C=O) at the end of the chain. The carbonyl group is polar, and the oxygen atom has a partial negative charge. The hydrogen atom has a partial positive charge. This polarity makes the aldehyde group susceptible to nucleophilic attack.

The bromine and chlorine atoms are both electrophilic, which means that they have a partial positive charge. This makes them susceptible to nucleophilic attack.

The methyl groups are non-polar and do not have any significant reactivity.

The molecule is a chiral molecule, which means that it has a mirror image that is not superimposable on itself. This is because the carbon atom with the carbonyl group is attached to four different groups.

The molecule is a liquid at room temperature and has a strong odor. It is used in a variety of products, including perfumes, flavorings, and plastics.

Answer:

KCIO

Explanation:

the only reason is because I looked online and the meaning for that is potassium hypochlorite my guy so if this is not right then I'm sorry but good luck.

Answer:

22.1 ppm

Explanation:

The equation of the reaction is;

Pb2+ (aq)  + 2NaI(s) ------>PbI2(s) + 2 Na^2+

Mass of precipitate =  55.1x10-3 g

Number of moles of precipitate =  55.1x10-3 g/461.01 g/mol = 1.2 * 10^-4 moles

1 mole of  Pb2+  yields 1 mole of PbI2

Hence 1.2 * 10^-4 moles of  Pb2+  also yields  1.2 * 10^-4 moles of PbI2.

Hence mass of Pb2+ present = 1.2 * 10^-4 moles * 207 g/mol = 0.025 g or 25 mg

Mass of solution = Density of solution * volume of solution

Mass of solution = 1.00 kg/L * 1.13 L

Mass of solution = 1.13 Kg

Concentration in mg/Kg(ppm) = mass of solute/mass of solution

= 25 mg/1.13 kg

= 22.1 ppm

Considering the definition of molar mass, the correct answer is option c): the mass of 1.85 moles H₂O₂ is 62.9 grams.

The molar mass of substance is a property defined as the amount of mass that a substance contains in one mole.

The molar mass of a compound is the sum of the molar mass of the elements that form it (whose value is found in the periodic table) multiplied by the number of times they appear in the compound.

In this case, you know the molar mass of the elements is:

So, the molar mass of the compound H₂O₂ is calculated as:

H₂O₂= 2× 1 g/mole + 2× 16 g/mole

Solving:

H₂O₂= 34 g/mole

You can apply the following rule of three: If by definition of molar mass 1 mole of the compound contains 34 grams, 1.85 moles of the compound contains how much mass?

mass= (1.85 moles× 34 grams)÷ 1 mole

mass= 62.9 grams

Finally, the mass of 1.85 moles H₂O₂ is 62.9 grams.

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Answer:

hope this helps :)

Answer:

By revive, I assume you're talking about medical assistance.

Explanation:

You can use CPR, where you lay a person back, hold their head up, and push on their chest to the beat "staying alive", in which it keeps their heart beating. If they aren't breathing, you can do mouth to mouth breathing, and continue the process until help arrives or.. the person is no longer with us.

If you have a defibrillator, you can use it on a low amp, or whatever amp you think would be most suitable for the condition of the person.

*yes the person below copy/pasted my thingy. yes its funny.

Answer: i don't  even know what you said but i think you said this,

CPR, where you lay a person back, hold their head up, and push on their chest to the beat "staying alive", in which it keeps their heart beating. If they aren't breathing, you can do mouth to mouth breathing, and continue the process until help arrives or.. the person is no longer with us,

If you have a defibrillator, you can use it on a low amp, or whatever amp you think would be most suitable for the condition of the person.

Hope this helps :)

Answer:

4

Explanation:

first write down the balanced equation:

N2 + 3 H2 → 2 NH3

when there is no coefficient written, there is actually an "invisible" 1 coefficient. so the coefficient of nitrogen (N2) is 1.

coefficient of N2 is 1 and the coefficient of H2 is 3.

then sum coefficients!

In the balanced chemical equation for the formation of ammonia from nitrogen  and hydrogen , the sum of the coefficients is four.

Chemical equation is a symbolic representation of a chemical reaction which is written in the form of symbols and chemical formulas.The reactants are present on the left hand side while the products are present on the right hand side.

A plus sign is present between reactants and products if they are more than one in any case and an arrow is present pointing towards the product side which indicates the direction of the reaction .There are coefficients present next to the chemical symbols and formulas .

The first chemical equation was put forth by Jean Beguin in 1615.By making use of chemical equations the direction of reaction ,state of reactants and products can be stated. In the chemical equations even the temperature to be maintained and catalyst can be mentioned.

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The mass of hydrogen needed to produce 51.0 grams of ammonia is  ≈ 9.07 grams.

To determine the mass of hydrogen required to produce 51.0 grams of ammonia (NH3) using the Haber process, we need to calculate the stoichiometric ratio between hydrogen and ammonia.

From the balanced chemical equation:

3 H₂(g) + N₂(g) → 2 NH₃(g)

We can see that for every 3 moles of hydrogen (H₂), we obtain 2 moles of ammonia (NH₃).

First, we need to convert the given mass of ammonia (51.0 grams) to moles. The molar mass of NH₃ is 17.03 g/mol.

Number of moles of NH₃ = Mass / Molar mass

                     = 51.0 g / 17.03 g/mol

                     ≈ 2.995 moles

Next, using the stoichiometric ratio, we can calculate the moles of hydrogen required.

Moles of H₂ = (Moles of NH₃ × Coefficient of H₂) / Coefficient of NH₃

           = (2.995 moles × 3) / 2

           ≈ 4.493 moles

Finally, we can convert the moles of hydrogen to mass using the molar mass of hydrogen (2.02 g/mol).

Mass of H₂ = Moles × Molar mass

          = 4.493 moles × 2.02 g/mol

          ≈ 9.07 grams

Therefore, approximately 9.07 grams of hydrogen is needed to produce 51.0 grams of ammonia in the Haber process.

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The maximum possible efficiency of the heat engine that uses reservoirs at 800°C and 0°C is 74%.

Maximum efficiency is mainly calculated for heat engines.

Let the starting temperature be T1 and the 2nd temperature is T2.

Since the given temperatures are in Celcius form, we have to first convert the temperatures into Kelvin form for proper calculation of maximum efficiency.

So, T1 = 0 + 273 = 273 K

T2 = 800 + 273 = 1073 K

We know,

Maximum efficiency = (T2- T1)/T2

= (1073 - 273) / 1073

= 800 / 1073

= 0.74

= 74 %

Therefore, the maximum efficiency of the heat engine will be 74%.

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