A 6.40 g sample of a compound is burned to produce 8.37 g CO_2, 2.75 g H_2O, 1.06 g N_2, and 1.23 g SO_2. What is the empirical formula of the compound? Give your answer in the form C#H#N#O#S# where the number following the element’s symbol corresponds to the subscript in the formula. (Don’t include a 1 subscript explicitly).

The atomic greatest radius is magnisium

She found out that the gypsum block with the water balloon cracked while the other block did not.The water in the balloon freezes and expands, just like the water in the cracks of rocks - is this similar to the weathering of rocks by ice.

Gypsum is a soft sulfate mineral that is made up of calcium sulfate dihydrate and has the chemical formula CaSO₄ . 2H₂O. It is extensively mined, and used as fertilizer, the primary ingredient in many types of plaster, sidewalk or blackboard chalk, and drywall, and it is also widely utilized as a building material.

In nature, water flows from small rivers and occasionally through fissures in the rocks or terrain, and when it freezes, it puts too much pressure on the rock, causing it to split. The similarity in Jades' test is that the water balloon has water when it is placed in the gypsum, and when she adds a cold environment, the ice within the water balloon freezes and expands, putting too much pressure on the rock, causing it to shatter.

Ice Wedging is a example of this.

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The decomposition of aspirin (acetylsalicylic acid,\(C_{9} H_{8} O_{4}\)) can occur through the hydrolysis reaction, resulting in the formation of acetic acid (\(CH_{3} COOH\)) and salicylic acid (\(C_{7} H_{6}O_{3}\)).

The decomposition of aspirin (acetylsalicylic acid, \(C_{9} H_{8} O_{4}\)) can occur through the hydrolysis reaction, resulting in the formation of acetic acid (\(CH_{3} COOH\)) and salicylic acid (\(C_{7} H_{6}O_{3}\)). To determine the moles of each product formed, we need to consider the balanced chemical equation for the reaction:

\(C_{9} H_{8} O_{4} = > C_{7} H_{6}O_{3} +CH_{3} COOH\)

From the equation, we can see that for every 1 mole of aspirin, 1 mole of salicylic acid and 1 mole of acetic acid are produced.

Therefore, the moles of salicylic acid and acetic acid formed will be equal to the number of moles of aspirin that decomposes. If we know the amount of aspirin in moles, we can directly calculate the moles of each product based on stoichiometry.

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Answer

1. Acetic acid + Sodium hydroxide → Sodium Acetate + Water

2. CH₃COOH + NaOH → CH₃COONa + H₂O

3. CH₃COOH + OH⁻ → CH₃COO⁻ + H₂O

Explanation

1. The proper names of the products for the reaction between acetic acid and sodium hydroxide are given below (separated by a + sign).

Acetic acid + Sodium hydroxide → Sodium Acetate + Water

2. The full, balanced molecular equation with the correct chemical formulas, including coefficients is:

CH₃COOH + NaOH → CH₃COONa + H₂O

3. Finally, the net ionic equation for this reaction is below, including ionic charges.

Strong bases are considered strong electrolytes and will dissociate completely. This means that NaOH will split apart in the net ionic equation. Weak acids only dissociate partially and are not considered to split apart into ions when writing net ionic equations.

CH₃COOH + Na⁺ + OH⁻ → CH₃COO⁻ + Na⁺ + H₂O

Cross the spectator ions, we have:

CH₃COOH + OH⁻ → CH₃COO⁻ + H₂O

Answer:  7.87 g/ml

Explanation:

(28.98 ml - 27.90ml) = 7.87 g/ml

Objects would no longer be drawn toward each other, because there would be no sloping surface for them to fall down. Instead, they would fly off in whatever direction gravity was keeping them from going.

Answer:

All items in the universe, humans, objects, and the planets, would be floating around. Everything would become weightless.

Partially compressible is the right answer because the substance is a liquid.

If the substance took different shapes in each container, this means that it can be partially compressible like liquids. We know that liquids have a definite volume and  take the shape of the container so we can conclude that Partially compressible is the right answer.

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Answer:

351.1g/mol

Explanation:

you can find the answer using The ideal gas equation

n= PV/RT

n=(1.21*1.9/0.082*301)mol

n=0.092 mol

molar mass=Mass/mole

m=32.3g/0.092mol

m=351.1g/mol

Answer:

Freeze

Condense

Melt

Sublime

Explanation:

The work performed on an electron by the field is  0.18 × 10⁻¹⁸J.

An electric field that has a constant field strength value throughout is said to be uniform.

The product of the electron charge q and the electric field intensity determines the force that the electric field applies to the electron.

F: qE = ( 1.6 × 10⁻¹⁹) (375 N/ C)  = 6 × 10⁻¹⁷ N

The electron moves by the following distance when this force is at work: x = 3.10 cm = 0.031 m

Additionally, the product of the force's magnitude and the electron's displacement represents the work that the electric field does on the electron. Since the force's direction matches the electron's displacement, the sign must be interpreted as positive, hence

W = FΔx = ( 6 × 10⁻¹⁷ N) (0.031 m ) = 0.18 × 10⁻¹⁸ J

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Answer:

Using C2H4 + 3 O2 -> 2 CO2 + 2 H2O. If 20 moles of fuel are combusted in the above equation, how many moles of O2 are consumed?

Explanation:

According to the balanced chemical equation:

1 mole of C2H4 reacts with 3 moles of O2

Therefore, for 20 moles of C2H4 combusted, we would need:

20 moles C2H4 × (3 moles O2 / 1 mole C2H4) = 60 moles O2

So, 60 moles of O2 are consumed in the combustion of 20 moles of C2H4.

Molecules are very heavy but atoms are very light is true about atoms and molecules.

Individually neutral particles make up an atom. The bonding of two or more atoms forms molecules, which are neutral entities. An ion is a particle that is positively or negatively charged.

The capacity of water molecules to attract other water molecules is referred to as cohesion, and this trait makes water a "sticky" liquid.

A group of two or more atoms bound together by the attractive forces known as chemical bonds is referred to as a molecule; depending on the context, the word may or may not include ions that meet this requirement.

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Explanation:

a) E = P × t

E = 750 × 1 s = 750 J

b) E = P × t

E = 750 × 3s = 2250 J

c) E = P × t

1500 = 750 × t

t = 1500/750

t = 2 s

A methane molecule (CH4) is considered symmetrical because it possesses a symmetric structure and exhibits symmetry operations.

Symmetry refers to a balanced arrangement of elements that can be divided into equal parts by a plane, axis, or center. In the case of methane, it exhibits several symmetrical characteristics.

Firstly, methane has a tetrahedral molecular geometry, with the carbon atom at the center and four hydrogen atoms positioned around it. This geometry ensures that the molecule is symmetrical in terms of its spatial arrangement.

Each hydrogen atom is located at one of the vertices of the tetrahedron, forming equal angles and distances with respect to the central carbon atom. This symmetry is maintained regardless of the orientation of the molecule.

Additionally, methane possesses rotational symmetry. It can be rotated around any of the carbon-hydrogen bonds, and the molecule will retain its overall appearance.

The symmetry of methane arises from its molecular structure and the equal distribution of electron density around the central carbon atom. The four hydrogen atoms are bonded to the carbon through sigma bonds, which have a cylindrical symmetry. This balanced arrangement of the atoms contributes to the overall symmetry of the molecule.

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Iron is changed into steel by blowing oxygen through the molten metal from the Blast Furnace. This oxidises the impurities in the molten metal. Carbon is a major impurity in Blast Furnace metal.

#1

\(\\ \tt\hookrightarrow 2NaBr+Ca(OH)_2\longrightarrow CaBr_2+2NaOH\)

#2

\(\\ \tt\hookrightarrow 2NH_3+H_2SO_4\longrightarrow (NH_4)_2SO_4\)

#3

\(\\ \tt\hookrightarrow 2C_5H_9O+14O_2\longrightarrow 10CO_2+9H_2O\)

#4

\(\\ \tt\hookrightarrow 3Pb+2H_3(PO_4)\longrightarrow 3H_2+Pb_3(PO_4)_2\)

Answer: 2. 29.2%

Explanation:

Answer:

The answer is "\(41.23 \ L\ N_2\)"

Explanation:

\(2 NO_3^{-} + 10 e^{-} + 12 H^{+} \longrightarrow N_2 + 6 H_2O\\\\= \frac{( 215 \ g \ NO_3^{-})}{(62.0049 \frac{\ g NO_3^{-}}{mol})} \times \frac{(1 \ mol \ N_2}{ 2 \ mol \ NO_3^{-})}\\\\\)

\(=3.46746789 \times 0.5\\\\= 1.733 \ mol \ N_2 \\\\\to V = \frac{nRT}{P} \\\\= (1.733 \ mol) \times (0.08205746 \frac{L\ atm}{Kmol}) \times \frac{ (17 + 273) K}{(1.00 atm)}\\\\= 41.23\)

The volume of CO2 is 206.27 L

The ideal gas equation is used to determine the volume, pressure, temperature, or number of moles. It can be mathematically expressed as:

PV = nRT

From the given information:

The equation for the reaction can be expressed as:

\(\mathbf{2NO_3^-_{(aq)} + 5CO_{(g)} + 2H^+_{(aq)} \to N_2{(g)} + 5CO_2_{(g)} + H_2O_{(l)}}\)

The number of moles of CO2 from the reaction is;

\(\mathbf{= \dfrac{215 \ g}{62.0049} \times \dfrac{5 \ mol \ of \ CO_2}{2 \ mol \ of \ NO_3^-} }\)

\(\mathbf{= 8.669 \ moles \ of \ CO_2 }\)

From ideal gas, by making the volume the subject of the, we have:

The volume of CO₂ \(\mathbf{V= \dfrac{nRT}{P}}\)

\(\mathbf{V= \dfrac{8.669 \ moles \times 0.08205 L atm/ kmol \times 290\ K}{1 \ atm }}\)

\(\mathbf{V= 206.27 \ L \ of \ CO_2 \ gas}\)

Learn more about the volume of CO2 gas here 206.27 L

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The relative molecular mass of hydrated Copper (II) tetraoxosulphate (VI) CuSO4.5H₂O is 249.

Molecular mass is a measure of the total mass of one mole of a substance, which is defined as the mass of the substance divided by the number of molecules it contains. It is typically expressed in g/mol and is also known as molar mass. Molecular mass is determined by the types and number of atoms that compose a molecule, and is an important factor in understanding the properties of a substance.

This is calculated by adding the atomic masses of all the atoms present in the compound.
The atomic mass of copper is 64, sulphur is 32, oxygen is 16, and hydrogen is 1.
So, the relative molecular mass of hydrated Copper (II) tetraoxosulphate (VI) CuSO4.5H₂O is 64 + 32 + (16*4.5) + (1*5) = 249.

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Explanation:

H2So4=sulphuric acid , strong acid

Answer: 720 g

Explanation:

To solve this we must be knowing each and every concept related to mole. Therefore, shivani measures out 6.0 moles of epsom salt (MgSO\(_4\)) to put her bath. 1,566g MgSO\(_4\) went in the bath.

A mole is merely a measuring unit. In reality, it is one of its International System of Units' seven foundation units. When current units are insufficient, new units are created.

Chemical reactions frequently occur at levels where employing grams would be inappropriate, but using absolute quantities of atoms/molecules/ions would also be misleading.

For all practical reasons, one mole of a substance in grams is nearly equal to 1 molecule for the compound per daltons.

Mathematically,

number of mole =given mass ÷ molar mass

number of mole=6.0 moles

molar mass of epsom= 261.47g/mol

substituting all the given values in the above equation, we get

6.0 moles =mass of epsom ÷ 261.47g/mol

mass of epsom =1,566g

Therefore, 1,566g  MgSO\(_4\) went in the bath.

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The molar mass of the unknown gas in the 500 mL flask at stp is 89.7 g/mol

We'll begin by calculating the number of mole of the gas that occupied 500 mL at stp.

Recall at stp:

22400 mL = 1 mole of the gas

Therefore,

500 mL = 500 / 22400 = 0.0223 mole of gas.

Finally, we shall determine the molar mass of the gas. This can be obtained as follow:

Mass of gas = 2 g

Mole of gas = 0.0223 mole

Molar mass = mass / mole

Molar mass of gas = 2 / 0.0223

Therefore, the molar mass of the unknown gas is 89.7 g/mol

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Answer:

A. The reaction shifts to the right (products) and the concentrations of I and H₂ decrease.

Explanation:

If gas is removed from the system at equilibrium, the system will try to compensate for the loss by shifting the reaction in a direction that produces more gas molecules. This is known as Le Chatelier's principle, which states that a system at equilibrium will respond to a disturbance by shifting in a way that minimizes the effect of the disturbance.

In this case, since gas is being removed from the system, the reaction will shift to the side that produces more gas molecules. Looking at the balanced equation, we can see that 2HI(g) has a greater number of gas molecules compared to H₂(g) and I₂(g). Therefore, the system will shift to the right (products) to produce more HI(g) and reestablish equilibrium.

Answer

proton

Explanation:

Answer:

3) 1.25

Explanation:

I had the same question and somehow got it right :)

The new volume will be determined by molarity and which will be  1.25 ml.

The volume of an object is just a measurement of how much space it takes up.

The molality refers to the moles of a solute in relation to the mass of the solvent, whereas the molarity refers to the moles of a solute in based on the volume of the solution. It can be denoted by M.

The formula of Molarity is

\(M_{1} V_{1} =M_{2}V_{2}\)

where, M is molarity and V is volume.

Calculation of volume.

It is given that,\(M_{1} = 0.1 M, M_{2} =0.0025 M.\)

Now, puts the value of given data in molarity equation.

\(M_{1} V_{1} = M_{2} V_{2}\)

\(V_{1} = M_{2} V_{2} /M_{1}\)

\(V_{1}\) = 0.005×25/0.1 = 1.25 ml

Therefore, the correct answer will be option 3.

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Answer:

The total number of protons and neutrons is the mass number of an atom.

Explanation:

The mass number is made up of the total protons and neutrons in an atom. The mass number represents the mass of the atom in amu (atomic mass units). Electrons are not included in this representation because their mass is negligible (practically 0). The atomic number is made up of the total protons in an atom.

Answer:

when the atom moves to the third energy level, its energy increases. However, when it goes back to the second energy level its overall energy decreases.

Explanation:

the smallest (or innermost) energy level has the least amount of energy and the largest (or outer most) level needs the most amount of energy. In order for the electron to move from one level to the other, it would need to match the energy of that level.

Answer:

Acceleration

Explanation:

Acceleration = \(\frac{velocity}{time}\)