1. Chromium metal is reacted with 40.0mL of 3.0M tin (IV) chloride in the following reaction:
4Cr + 3SnCl4 --> 4CrCl3 + 3Sn
How many grams of tin will be produced? (3 marks) Please upload your work.
(Non-anonymous question )

The balanced oxidation-reduction equation for the destruction of cyanate ion waste solution from gold-mining operations by treatment with hypochlorite ion in basic solution is:

OCN⁻(aq) + OCl⁻(aq) + 2OH⁻(aq) → CO₂⁻(aq) + N₂(g) + Cl⁻(aq) + H₂O(l)

In this reaction, the cyanate ion (OCN⁻) is oxidized to carbon dioxide (CO₂⁻) and nitrogen gas (N₂), while the hypochlorite ion (OCl⁻) is reduced to chloride ion (Cl⁻). The reaction takes place in basic solution, which provides the hydroxide ions (OH⁻) needed to neutralize the acidic H⁺ ions produced during the oxidation of the cyanate ion.

The reaction is exothermic, releasing heat energy as the products form. This reaction is an effective way to dispose of the cyanate ion waste generated by gold-mining operations, as it converts the hazardous waste into harmless gases and ions.

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Answer:

In atomic physics and quantum chemistry, the electron configuration is the distribution of electrons of an atom or molecule in atomic or molecular orbitals. For example, the electron configuration of the neon atom is 1s² 2s² 2p⁶, using the notation explained below

Explanation: welcome

Answer:

Tempreture should be the correct answer!!

Explanation:

hope this helps ya!!

Answer:

12 sodium 4 phosphorus 16 oxygen.  makes the table below to determine the number of atoms of each element in the chemical formula 4Ca(ClO3)2.

Answer:

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Explanation:

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1. C6H10O5 + 6O2 → 6CO2 + 5H2O

2. MgO + H2O → Mg(OH)2

3. 151.2444 grams of carbon dioxide are required to produce 3.44 moles of carbonic acid in the blood.

1. The complete, balanced chemical reaction for the burning of cellulose (C6H10O5), or wood, is:

C6H10O5 + 6O2 → 6CO2 + 5H2O

This reaction represents the combustion of cellulose in the presence of oxygen, resulting in the formation of carbon dioxide (CO2) and water (H2O).

2. The balanced equation for the reaction between magnesium oxide (MgO) and water (H2O) to produce magnesium hydroxide (Mg(OH)2) is:

MgO + H2O → Mg(OH)2

According to the equation, 1 mole of magnesium oxide reacts with 1 mole of water to produce 1 mole of magnesium hydroxide. Therefore, if 2.55 moles of magnesium oxide react, the same number of moles of magnesium hydroxide will be produced.

3. The balanced equation for the reaction between carbon dioxide (CO2) and water (H2O) to form carbonic acid (H2CO3) is:

CO2 + H2O → H2CO3

According to the equation, 1 mole of carbon dioxide reacts with 1 mole of water to produce 1 mole of carbonic acid. Therefore, if 3.44 moles of carbonic acid are produced, the same number of moles of carbon dioxide is required.

To calculate the mass of carbon dioxide, we need to know its molar mass, which is approximately 44.01 g/mol. Therefore, the mass of carbon dioxide required to produce 3.44 moles of carbonic acid is:

Mass = Moles × Molar mass

Mass = 3.44 moles × 44.01 g/mol

Mass = 151.2444 g

Therefore, 151.2444 grams of carbon dioxide are required to produce 3.44 moles of carbonic acid in the blood.

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The arbitrary assignment of the reduction of Zn2+(aq) to Zn(s) as E = 0 V serves as a reference point for determining the relative reduction potentials of other redox reactions. This assignment is based on the convention that the standard reduction potential

In the case of the Zn2+(aq) to Zn(s) reduction, the reaction involves the gain of two electrons by Zn2+ ions, leading to the formation of solid zinc metal. The assigned reduction potential of 0 V indicates that, under standard conditions (1 M concentration, 25°C, and 1 atm pressure), the Zn2+ ions have a tendency to accept electrons and be reduced to Zn metal.

Any reduction potential above 0 V suggests a greater tendency for reduction, while a negative reduction potential indicates a lower tendency for reduction compared to the Zn2+(aq) to Zn(s) reaction.

This reference potential allows us to compare the reactivity of other redox systems and predict the feasibility of different reactions. The more positive the reduction potential, the greater the tendency for reduction to occur. Therefore, if we encounter a reduction potential of +0.34 V for another reaction, we can infer that it is more likely to occur spontaneously compared to the Zn2+(aq) to Zn(s) reduction. Conversely, if we encounter a reduction potential of -0.50 V, we can conclude that the reverse reaction (oxidation) is more favorable than the reduction of Zn2+(aq) to Zn(s).

Overall, the assignment of E = 0 V for the reduction of Zn2+(aq) to Zn(s) provides a benchmark for understanding the electrochemical behavior of other redox reactions and allows us to make predictions based on the relative reduction potentials.

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Answer:

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Answer:Density, mass of a unit volume of a material substance. The formula for density is d = M/V, where d is density, M is mass, and V is volume. Density is commonly expressed in units of grams per cubic centimetre.

Explanation:

Answer:

Pop your popcorn for 2 minutes in the microwave but if you like to pop your popcorn old fashion get popcorn seeds and put them in an pot and then put a lid over it then pop it.

Explanation:

The concept ideal gas equation is used here to determine the volume of the carbondioxide. Combustion reactions are generally highly exothermic reactions. The volume of CO₂ is

A combustion is a chemical reaction in which a fuel undergoes oxidation as a result of the reaction with an oxidizing agent which causes the release of energy in the form of heat.

15.0 °C = 288 K

The ideal gas equation is:

PV = nRT

V = nRT / P

V = 354 × 0.0821 × 288 / 0.995 = 8412.3 L

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The mass percentage of C in morphine would be 4.21%.

The mass percentage of a composition in a compound is the mass of the composition relative to the mass of the entire compound. This can be mathematically expressed as:

Mass percentage = mass of component/mass of substance x 100%

In this case, we are looking for the mass percentage of C in \(C_{17}H_{19}NO_3\).

Molar weight of C = 12 g/mol

Molar mass of  \(C_{17}H_{19}NO_3\) = (12x17) + (1x19) + (14x1) + (16x3)

                                             = 285 g/mol

Mass percentage of C = 12/285

                                     = 4.21% to 2 decimal places.

In other words, the mass percentage of C in morphine is 4.21%.

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Answer:

See below, please.

Explanation:

a. 1 mol H₂O has more representative particles than 1 mol OCl₂. This is because 1 mol of a substance contains Avogadro's number of particles (6.02 x 10²³), and H₂O has two atoms per molecule while OCl₂ has three atoms per molecule. Therefore, 1 mol of H₂O has twice as many particles as 1 mol of OCl₂.

b. 0.5 mol O₂ has more representative particles than 0.75 mol H₂. This is because O₂ is a diatomic molecule, meaning it contains two atoms per molecule, while H₂ only has one atom per molecule. Therefore, even though the quantity of H₂ is greater, O₂ has more particles overall.

c. 3.0 mol SnO₂ has more representative particles than 1.5 mol SnO. This is because SnO₂ has two atoms of oxygen per molecule, while SnO only has one atom of oxygen per molecule. Therefore, for the same number of moles, SnO₂ has twice as many oxygen atoms and thus more representative particles.

d. 0.66 mol FeO has more representative particles than 0.33 mol Fe₂O₃. This is because FeO has one atom of iron per molecule, while Fe₂O₃ has two atoms of iron per molecule. Therefore, for the same number of moles, FeO has twice as many iron atoms and thus more representative particles.

The general gas equation, commonly referred to as the ideal gas law, represents the state of a fictitious ideal gas through an equation. The molar mass of ethylene gas when the pressure is 755.3 mmHg, the temperature is 25.0 °C and it weighs 36.2449 g is 28.29 g/mol.

According to the ideal gas law, the sum of the absolute temperature of the gas and the universal gas constant is equal to the product of the pressure and volume of one gram of an ideal gas.

The ideal gas equation is:

PV = nRT

n = PV / RT

755.3 mmHg = 0.99 atm

25.0 °C = 298 K

R = 0.082 atm·L·mol⁻¹·K⁻¹

Mass of water = 142.3415 - 36.1235 = 106.218 g

Density = Mass / Volume

V = m / d = 106.218 / 0.9970 = 106.53 mL = 0.106 L

n = 0.99 × 0.106 / 0.082 × 298  = 0.00429 mol

Mass of ethylene gas = 36.2449 - 36.1235 = 0.1214 g

Molar mass =  0.1214 / 0.00429 = 28.29 g/mol

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Answer: D: burning

Explanation:

The event always involves a chemical change is burning.

The changes experienced by matter can be:

Which event always involves a chemical change?

The event always involves a chemical change is burning.

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The atomic mass of an element can be determined from its isotopic masses. The mass of the isotope of gallium Ga-71 is 71.06 amu.

Isotopes are elements with same atomic number and different mass numbers. Isotopes have similar chemical and physical properties.

The atomic mass of an element from the masses of its isotopes can be calculated using the equation given below:

Atomic mass =  mass of isotope 1 × % abundance/100 +  mass of isotope 2× % abundance/100

Here, the percentage abundance of Ga-69 is 60.11%. Thus percentage abundance of Ga-71 is 100 - 60.11 = 39.81 %. The atomic mass of gallium is 69.723 u.

Thus the mass of Ga-71 is calculated as follows:

69.723 = (68.9256 × 60.11 /100) + (m2 × 39.81/100)

mass of Ga-71= m2 = [ 69.723 - (68.9256 × 60.11 /100) ] / 39.81

                        = 71.06 amu.

Hence the mass of the isotope of gallium Ga-71 is 71.06 amu.

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Answer:

  -172.6 °C

Explanation:

You want to know the Celsius equivalent of the temperature 100.6 K.

The relation is ...

  C = K - 273.15

  C = 100.6 -273.15 = -172.55

The temperature is -172.55 °C, about -172.6 °C.

__

Additional comment

We have rounded to tenths, because that is precision of the temperature given. If you use 273 as the conversion constant, you will get -172.4.

Diameter of less than 1 nm represents true solution, diameter of 800nm represents colloidal solution and diameter of 1200nm represents suspension.

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Answer: metal turn orange and weaker as it gets oxidised

Explanation:

Answer:

Explanation:

The density would be 4.

Explanation:

Please send me the answer of this question

The molarity is calculated using the following formula:

We need to first find the number of moles of CuSO4. The mass = 35.00g and molar mass = (63.55 + 32.07 + (16x4) = 159.62 g/mol. Volume of the solution = 250.0 mL = 0.250 L

n = m/M

n = 35.00 g/159.62 g/mol

n = 0.219 mol

C = 0.219 mol/0.250 L

C = 0.8771 mol/L

Therefore the answer is B.

On the basis of the information in the table, the arrangement of the binary compounds in order of increasing bond polarity is CH4 < SiCl4 < SF4.

A bond is said to be polar when there is a large difference in electronegativity between the atoms. If we check out the electronegativity differences between the atoms, we have the following;

C - H = 2.5 - 2.1 = 0.4

Si - Cl = 3.0 - 1.8 = 1.2

S - F = 4.0 - 2.5 = 1.5

We can see that the highest electronegativity difference and highest polarity is observed in the S - F bond, followed by the Si - Cl bond and finally the C - H bond has the lowest electronegativity difference and lowest polarity.

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Complete question:

On the basis of the information above, which of the following arranges the binary compounds in order of increasing bond polarity?

CH4 < SiCl4 < SF4

Because oil lacks a charge and is not drawn to the polar water molecules, it is a nonpolar material.

The more prevalent soluble contaminants are organic matter, sodium chloride, sodium sulphate, sodium carbonate, magnesium chloride, calcium chloride, calcium sulphate, and calcium bicarbonate. Sand, clay, and organic materials are some common examples of insoluble impurities.

Solids that may create a solution when combined with the appropriate liquid are said to be soluble (or soluable) solids. Because of this, the soluble substances in the liquid (such as water, oil, kerosene, etc.) dissolve. such as sugar and water or salt and water. Solids that do not dissolve in water are known as insoluble solids.

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Answer:

HC₂H₃O₂ + NaHCO₃ —> NaC₂H₃O₂ + CO₂ + H₂O

The coefficients are: 1, 1, 1, 1, 1

Explanation:

_HC₂H₃O₂ + _NaHCO₃ —> _NaC₂H₃O₂ + _CO₂ + _H₂O

To balance an equation, we simply do a head count of the individual elements and ensure they are balanced on both side.

For the above equation, we shall balance it as :

HC₂H₃O₂ + NaHCO₃ —> NaC₂H₃O₂ + CO₂ + H₂O

Reactant:

H = 5

C = 3

O = 5

Na = 1

Product:

H = 5

C = 3

O = 5

Na = 1

From the above, we can see that each element is the same on both side of the equation. Thus the equation is already balanced

HC₂H₃O₂ + NaHCO₃ —> NaC₂H₃O₂ + CO₂ + H₂O

The coefficients are: 1, 1, 1, 1, 1

Answer:

\(\boxed {\boxed {\sf 198,000 \ Joules}}\)

Explanation:

We want to find energy and we are given the specific heat capacity, mass, and change in temperature. We must use this formula:

\(q=mc \Delta T\)

where m is mass, c is the heat capacity, and ΔT is the change in temperature.

We know the mass is 2,000 grams, the heat capacity is 3.3 J/g °C.

To find the change in temperature, subtract the final temperature and initial temperature.

Substitute the known values into the formula.

\(q= (2000 \ g)( 3.3 \ J /g \textdegree C) (30 \textdegree C)\)

Multiply the first two numbers and note the grams will cancel out.

\(q= (6600 \ J/ \textdegree C)( 30 \textdegree C)\)

Multiply again. This time, the degrees Celsius will cancel.

\(q= 198000 \ J\)

198,000 Joules of energy are required.

The choice of solution has a concentration of 1.144 mol/kg molality.

Molarity corresponds to the moles of solvent divided by the amount of solution in litres, whereas molality is equal with the moles of solvent divided by the quantity of solvent in kilogrammes.

Since 1 mole of solute is present in 1 litre for the solution, which contains both the solute and the solvent, 1 molar aqueous solutions are more concentrated than one decays aqueous solutions.

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Answer:

. multiple daughter cells are formed from one parent cell

Answer:

mass ,volume and density

Answer:

Coron, Palawan, El Nido, Palawan, Cebu, Boracay, Siargao.

Explanation:

I hope this helps.

coron,palawan,El nidu, Cebu and boracay are 5 island in Philippines.....

Sodium combines with oxygen to form sodium oxide and sodium combines with Carbon-di-oxide to form sodium carbonate.

When sodium and oxygen combine, they form sodium oxide. The reaction is:

2Na + O₂ → 2Na₂O

Sodium and oxygen combine to form sodium oxide, a white solid with a melting point of 1,132 degrees Celsius. Sodium oxide is a strong base, meaning it can accept protons from other molecules. It is also a very strong oxidizing agent, meaning it can donate electrons to other molecules.

Similarly, Sodium carbonate is formed when sodium and carbon dioxide combine. This reaction is used to make baking soda.

When sodium and carbon dioxide combine, they form sodium carbonate. The reaction is as follows:

2Na + CO₂ -------> Na₂CO₃

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