What is the empirical formula for C10h22

Answer:

1)Filtration to remove sand

2)Evaporation to obtain sugar

Explanation:

Add water to the mixture and mix,sugar will dissolve.

Filter out the sand.

Evaporate the remaining solution to obtain the sugar.

Nucleus is surrounded by a cloud of electrons.

Nucleus contains protons.

Protons are attracted to electrons.

Electrons have negative electrical charge.

Protons have positive electrical charge.

An atom is the smallest particle of an element that can take part in a chemical reaction.

Atoms of elements are composed of three sub-atomic particles, namely:

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we should take out from point

Answer:

There are 5! goodluck,

Explanation:

Answer:

the greater the concentration of particles the lower the freezing point will be.

Answer:

because electron is a negetively charge particle that orbits the outer part of atom and despite being small it is a strong proton.

Explanation:

Sure, I'd be happy to help! To calculate the work done during a reaction, we use the formula:work = -PΔV
Where P is the pressure, ΔV is the change in volume, and the negative sign indicates that work is being done on the system (since the volume is contracting).

In this case, the outside pressure is given as 7 atm, and the internal volume contracts from 90 L to 14 L. So we can calculate ΔV as
(Note that the units are J, not kJ - I assume this was a typo in the original question.)
So the work done during this reaction is 532 J. I hope this helps! Let me know if you have any other questions.
Hello! I'd be happy to help you with your question. To calculate the work done during a reaction with a change in volume and given outside pressure, you can use the formula:
Work (W) = -P * ΔV- P is the outside pressure (7 atm in this case)
- ΔV is the change in volume, calculated as V_final - V_initial (14 L - 90 L in this case)
Step 1: Calculate the change in volume (Δ
Before we proceed with this calculation, it's important to note that we need to convert the units to kJ. The conversion factor is 1 L·atm = 0.1013 kJ. So, we will multiply our result by this conversion facto
W = (-7 * -76) * 0.1013 kJ
W = 532 * 0.1013 kJ
W = 53.8916 kJ
Therefore, the work done during the reaction is approximately 53.89 kJ.

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50.68 grams of sodium hydroxide were consumed in the reaction.

Since the balanced chemical equation for this reaction is:

2 Na + 2 H2O -> 2 NaOH + H2

We can see that for every 2 moles of Na used, 2 moles of NaOH are produced, and 1 mole of H2O is produced. Therefore, the moles of NaOH produced in the reaction can be calculated by dividing the moles of H2O produced by 1.

First, let's calculate the moles of H2O produced:

m(H2O) = 45.6 g / 18.015 g/mol = 2.534 mol

Since the stoichiometric ratio of NaOH to H2O is 2:1, we know that the number of moles of NaOH produced is half the number of moles of H2O produced:

n(NaOH) = 1/2 x n(H2O) = 1.267 mol

Now we can use the molar mass of NaOH to calculate the mass of NaOH consumed:

m(NaOH) = n(NaOH) x MM(NaOH) = 1.267 mol x 40.00 g/mol = 50.68 g

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The solution that would be expected to contain the greatest number of solute particles is 1 liter of 1.0 m NaCl. Option C is the correct answer.

Ionic compounds are chemical compounds composed of ions held together by electrostatic forces of attraction between oppositely charged ions.

When an ionic compound such as NaCl is placed in water, the component atoms of the NaCl crystal dissociate into individual sodium ions (\(\rm Na^+\)) and chloride ions (\(\rm Cl^-\)).

To determine which of the solutions would be expected to contain the greatest number of solute particles, we need to consider the number of solute particles produced by each molecule of the solute.

NaCl dissociates in water to produce two solute particles (\(\rm Na^+\)and \(\rm Cl^-\)), while glucose does not dissociate and therefore produces only one solute particle. Therefore, 1 liter of 1.0 m NaCl would contain twice as many solute particles as 1 liter of 1.0 m glucose.

In conclusion, 1 liter of 1.0 m NaCl solution would be expected to contain the greatest number of solute particles. The correct answer is option C.

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The given question is in inappropriate manner. The correct question is:

When an ionic compound such as sodium chloride (NaCl) is placed in water, the component atoms of the NaCl crystal dissociate into individual sodium ions and chloride ions. In contrast, the atoms of covalently bonded molecules (e.g., glucose, sucrose, glycerol) do not generally dissociate when placed in aqueous solution. which of the following solutions would be expected to contain the greatest number of solute particles (molecules or ions)?

a. 1 liter of 1.0 m glucose  

b. 1 liter of 0.5 m NaCl

c.  1 liter of 1.0 m NaCl

d. 1 liter of 1.0 m NaCl and 1 liter of 1.0 m glucose will contain equal numbers of solute particles.

Answer:

2H2SO4 + 2Ca(OH)2 —> 2CaSO4 + 4H2O

Answer:

Logan could explain the lower mass by explaining that the reaction between hydrochloric acid and magnesium produces hydrogen gas, which escapes and therefore is not included in the final combined mass measurement. The reaction is:HCl + Mg → MgCl2 + H2Since the hydrogen gas has mass, its escape from the reaction vessel explains the decrease in the combined mass of the reactants after the reaction.

Answer:

It both benefits the bird by providing sustenance and the plant by possibly spreading seeds through fecal matter.

Explanation:

Answer:

NO is the catalyst; it provides a reaction pathway with a lower activation energy

Explanation:

1. Identify the catalyst

A catalyst is a species that is present at the beginning of a reaction and reappears at the end.

It does not appear in the overall equation.

Let's apply these concepts to your mechanism:

    First:      2NO(g) + O₂(g) ⟶ 2NO₂(g)

Second: 2NO₂(g) +2SO₂(g) ⟶ 2NO(g) + 2SO₃(g)

Overall:          O₂(g) + 2SO₂ ⟶ 2O₂

We see that NO is present at the beginning of the first step. It reacts and then re-forms in the second step. It does not appear in the final equation.

NO is the catalyst.

2. Explain the action of the catalyst

A catalyst acts by providing an alternate pathway with a lower activation energy.

The direct reaction of SO₂ with oxygen to form SO₃ has a high activation energy.

NO reacts with the oxygen to form an intermediate (NO₂) that then reacts with the SO₂ to form SO₃. Both steps have lower activation energies, so the reaction is faster.

Answer:

NO is the catalyst. NO is the catalyst because it increases the rate of the reaction but is not consumed during the reaction. NO increases the rate of the reaction by lowering the activation energy. The reaction of NO with O2 provides an alternative reaction pathway with a lower activation energy.

Explanation: edge 2020

This are the required answers based on the food chain and ecosystem.

If you have any doubts regarding on my answer. Feel free to share the doubts with me in comments section :D

Answer:Animals eat other organisms — Animals cannot produce their own energy without consuming other organisms.

Birds considered as consumers — Birds eat plants.

We see some animals in different food chain — because some animals consume more than one type of organism.

Some animals may live side by side — There is a limited amount of space found in ecosystems.

The best statement that explains why do organisms need energy — Energy is necessary for cells to function.

This are the required answers based on the food chain and ecosystem.

If you have any doubts regarding on my answer. Feel free to share the doubts with me in comments section :D

Explanation:

Using the given mass of the compound (0.520 g) and the calculated moles, we can determine the molar mass of the compound.

To find the molar mass of the compound, we can use the formula:

ΔT = Kf * m

where ΔT is the freezing point depression, Kf is the cryoscopic constant (in this case, 3.90 °C/m), and m is the molality of the solution.

First, we need to calculate the molality (m) of the solution:

m = moles of solute / mass of solvent (in kg)

The mass of the solvent (lauric acid) is given as 4.62 g. Since the unknown compound is a solute, we need to convert its mass to moles:

moles = mass / molar mass

Given that the mass of the unknown compound is 0.520 g, we can now calculate the moles of the compound.

Next, we convert the mass of the solvent to kg by dividing by 1000:

mass of solvent (lauric acid) = 4.62 g / 1000 = 0.00462 kg

Now we can calculate the molality:

m = moles of solute / mass of solvent = (moles of the compound) / (mass of solvent)

Finally, we can use the freezing point depression formula to find the molar mass of the compound:

ΔT = Kf * m

Substituting the given values:

4.20 °C = 3.90 °C/m * m

Now solve for m:

m = (4.20 °C) / (3.90 °C/m)

Once we have the molality, we can calculate the moles of the compound:

moles = molality * mass of solvent (in kg)

Finally, we calculate the molar mass:

molar mass = mass of solute / moles of solute

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Answer: Stamen, the male reproductive part of a flower. In all but a few extant angiosperms, the stamen consists of a long slender stalk, the filament, with a two-lobed anther at the tip. The anther consists of four saclike structures (microsporangia) that produce pollen for pollination. The main flower parts are the male part called the stamen and the female part called the pistil. The stamen has two parts: anthers and filaments. The anthers carry the pollen. The four main parts of a flower are the petals, sepals, stamen, and carpel (sometimes known as a pistil). If a flower has all four of these key parts, it is considered to be a complete flower.

Explanation:

Answer:

C) 0.121 M

Explanation:

HCl + H₂O = H₃O⁺ + OH⁻

.121M              .121M

HCl is a strong acid . It will dissociate almost 100 % so the concentration of acid and hydronium ion formed will be equal . It is to be noted that hydronium ion is formed due to association of H⁺ and H₂O . H⁺ is formed due to ionisation of HCl .

So concentrtion of hydronium ion ( H₃O⁺ ) will be .121 M.

Answer: mixture

Explanation: Answer my own question on my page please.

Answer: A mixture.

Explanation: A substance has to do with the chemical composition changing, so if you just dissolve sugar into water nothing changes in either’s chemical composition.

In a new compound, it is found that the central carbon atom is sp2 hybridized, this implies that carbon is also involved in a pi bond.

Hybridization of Carbon-Carbon is one of the important and most common chemical elements that are essential for organic connections.

A carbon atom is sp2 hybridized when bonding takes place between 1 s- orbital with two p orbitals. There is a formation of two single bonds and one double bond between three atoms. The hybrid orbitals are placed in a triangular arrangement with 120° angles between bonds.

In sp2 hybridization, one s orbital and two p orbitals hybridize to form three sp2 orbitals, each consisting of 33% s character and 67% p character.

Therefore when the central carbon atom is sp2 hybridization then there must be carbon involves in a pi bond.

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Answer:

tigers eyes

Explanation:

Answer:

b. keeping milk cold

Explanation:

The cool temperature in the fridge will stop it from going to any further reactions so it won't get spoilt

d. Keeping milk warm can help in slowing down of the reaction that can spoil milk.

Hence, d. Keeping milk warm can help in slowing down of the reaction that can spoil milk.

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Answer: things arnent always as they seem

Explanation:

Answer:

1. Metal.

2. Atom.

3. Homogeneous

4. Compounds.

5. Lustrous

6. Saturated.

7. Colloidal; true.

8. Homogeneous.

Explanation:

1. An element which are sonorous are called metal.

2. An element is made up of only one kind of atom.

3. Alloys are homogeneous mixtures.

4. Elements chemically combines in fixed proportion to form compounds.

5. Metals are lustrous and can be polished.

6. A solution in which no more solute can be dissolved is called a saturated solution.

7. Milk is a colloidal solution but vinegar is a true solution.

8. A solution is a homogeneous mixture.

Answer:

True

Explanation:

The chemist has 642.4 millimoles of barium acetate in the solution.

To calculate the millimoles of barium acetate (Ba(C₂H₃O₂)₂) in the solution, we can use the formula:

moles = molarity × volume (in liters)

First, let's convert the volume from milliliters (mL) to liters (L):

440.0 mL ÷ 1000 = 0.440 L

Now we can substitute the given values into the formula:

moles = 1.46 M × 0.440 L

moles = 0.6424 mol (rounded to 4 decimal places)

To convert the moles to millimoles, we multiply by 1000:

millimoles = 0.6424 mol × 1000

millimoles = 642.4 mmol (rounded to 3 significant digits)

Therefore, the chemist has 642.4 millimoles of barium acetate in the solution.

It's important to note that the molarity (M) represents the number of moles of solute per liter of solution. By multiplying the molarity by the volume in liters, we can find the number of moles of solute. To convert moles to millimoles, we multiply by 1000. The result represents the millimoles of barium acetate present in the given volume of solution.

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Answer:

4 hydrogen / 1 Carbon

Just look at the diagram

The steady-state concentration of the pollutant in the lake is approximately 0.000528 mg/L.

To find the steady-state concentration of the pollutant in the lake, we need to consider the inflow and outflow rates of the pollutant and the decay reaction rate.

The total inflow rate of the pollutant is given by:

Qin = Qs * Cs + Qw * Cw

The total outflow rate is equal to the flow rate out of the lake, which is the same as the inflow rate:

Qout = Qin

The change in the pollutant concentration in the lake over time can be expressed by the following equation:

dC/dt = (Qin - Qout)/V - K * C

At steady state, the change in concentration is zero (dC/dt = 0). Rearranging the equation, we have:

(Qin - Qout)/V - K * C = 0

Substituting the given values:

(10.0 m^3/s * 20.0 mg/L + 3.0 m^3/s * 229 mg/L)/12×10^6 m^3 - 0.14 per day * C = 0

Simplifying the equation:

(200.0 mg/s + 687.0 mg/s)/12×10^6 m^3 - 0.14 per day * C = 0

887.0 mg/s / 12×10^6 m^3 - 0.14 per day * C = 0

0.0000739 mg/L/s - 0.14 per day * C = 0

0.0000739 mg/L/s = 0.14 per day * C

Solving for C, the steady-state concentration:

C = (0.0000739 mg/L/s) / (0.14 per day)

C ≈ 0.000528 mg/L

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89.74% is the percentage yield of the product. Hence, option D is correct.

The percentage can be calculated by dividing the value by the total value and then multiplying the result by 100.

Given data:

Actual yield of product = 2.80 g

Theoretical yield = 3.12 g

Percent yield = ?

Formula:

Percent yield =  \(\frac{\;actual \;yield \;X \;100}{theoretical \;yield}\)

by putting values in the formula,

Percent yield =\(\frac{2.80 g X 100}{ 3.12 g}\)

Percent yield = 89.74%

Hence, option D is correct.

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Answer:

c. Chemical bonds are broken, and new ones are formed.

Explanation:

Hope this helps. :)

In a chemical reaction, chemical  bonds are broken, and new ones are formed.

Chemical reactions are defined as reactions which occur when a substance combines with another substance to form a new substance.Alternatively, when a substance breaks down or decomposes to give new substances it is also considered to be a chemical reaction.

There are several characteristics of chemical reactions like change in color, change in state , change in odor and change in composition . During chemical reaction there is also formation of precipitate an insoluble mass of substance or even evolution of gases.

There are three types of chemical reactions:

1) inorganic reactions

2)organic reactions

3) biochemical reactions

During chemical reactions atoms are rearranged and changes are accompanied by an energy change as new substances are formed.

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