Compound I --> 75g total, 52.46g iron, 22.54g oxygen, Compound 2 --> 56g total, 43.53g iron, 12.47g oxygen


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Liters of hydrogen gas, measured at stp, are produced 0.300 mol of  HCl hydrogen gas, measured at STP, is produced.

From the reaction, the ratio of Mg to HCl used is 1:2 .

This means that if the reaction goes to completion, the  0.100 mol of  Mg will react with 0.100mol×2=0.200ml of HCl.

This leaves 0.500mol−0.200mol=0.300 mol of  HCl.

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The coffee cup with the colder temperature has the greatest entropy rise.

In a system, the entropy of one system can be reduced by increasing the entropy of another system. Some scientists believe that when the entropy of the cosmos rises, a system incapable of performing useful labor will be created as a result of randomness. The universe is said to have experienced heat death when all that is left is thermal energy.

Self-organizing systems are ones that get more organized over time. They require energy from an external source in order for this reduction in entropy to be achieved. But since the entropy in the open system is falling, there must be an increase in entropy outside the system.

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Several physical and chemical factors also influence disinfectant procedures: temperature, pH, relative humidity, and water hardness.

Sanitizers can usually function properly in temperatures between 75°F and 120°F. Some metal objects may corrode when exposed to chlorine compounds at higher temperatures. Higher temperatures may also cause chlorine and iodine chemicals to evaporate from the solutions.

Number of microbes: If the microbial load is large, a stronger concentration of disinfectant or a longer exposure period is required to reach a specific level of disinfection.

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Answer:

3.96 x 1024 molecules

1 mole is equal to 6.023 × 10 ²³ molecules. 39.57 × 10 ²³ molecules are there in 230 grams of NH₄OH.

The term molar mass is defined as the mass in grams of one mole of a substance. It is represented by the symbol "M".

The mass (in grams) of one mole of a substance is known as its molar mass. You can calculate an element's molar mass by taking its atomic mass and multiplying it by the conversion factor grams per mole (g/mol).

The molar mass of NH₄OH is 35g/mol

1 mole = 35 grams

1 mole = 6.023 × 10 ²³ molecules

35 grams =  6.023 × 10 ²³ molecules

230 grams = ?

Number of molecules = weight / molar mass × 6.023 × 10 ²³

= 230 / 35 × 6.023 × 10 ²³

= 6.57 × 6.023 × 10 ²³

= 39.57 × 10 ²³ molecules

Thus, 39.57 × 10 ²³ molecules are there in 230 grams of NH₄OH.

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The question is incomplete, the complete question is:

If a 6.00 g sample of an optically pure compound was dissolved in 40.0 mL of \(CCl_4\) and the observed rotation was +3.30°, measured in a 10.0 cm (1.00 dm) polarimeter tube, how would one determine the specific rotation of the pure compound?

Answer: The specific rotation of the pure compound is \(+22^o\)

Explanation:

To calculate the specific rotation of a pure compound, we use the equation:

\([\alpha]=\frac{\alpha_{\text{observed}}}{C\times l\text{( in dm)}}\)

where,

\([\alpha]\) = specific rotation of a pure compound

\(\alpha_{\text{observed}}\) = observed rotation of the compound = [ex]+3.30^o\)

C = concentration in g/mL = 6.00 g/40 mL = 0.15 g/mL

l = path length = 1.00 dm

Putting values in above equation, we get:

\([\alpha]=\frac{+3.30^o}{0.15\times 1.0}\)

\([\alpha]=+22^o\)

Hence, the specific rotation of the pure compound is \(+22^o\)

Answer:

ta da

Explanation:

The total kinetic and potential energy of the particles that make up a substance is the thermal energy of that substance.

The overall kinetic energy of something like the particles in a substance is measured by its thermal energy. The temperature, as well as thermal energy substantially increase with particle mobility. The total thermal energy of such a substance is a function of temperature, atomic number, and physical condition.

Regardless of whether the temperature rises or falls, the kinetic energy continuously rises. The molecules' kinetic energy rises as the temperature rises.

Therefore, The total kinetic and potential energy of the particles that make up a substance is the thermal energy of that substance.

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Answer: The heat flows into Earth's atmosphere which changes as the Sun rises and sets, which increases during the day.

Explanation:

In evolutionary theory, adaptation is the biological mechanism by which organisms adjust to new environments or to changes in their current environment.

Answer:

adaptation is the biological mechanism by which organisms adjust to new environments or to changes in their current environment. .

Explanation:

brainlesttttttt is apprciated

Answer:

Explanation:

Percent composition tells you by mass what percent of each element is present in a compound. A chemical compound is the combination of two or more elements. ... The equation for percent composition is (mass of element/molecular mass) x 100.

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Answer:

62.58200 centimeters

Explanation:

Hope this helps!

Answer:

All I can give you is The steps for it.

Explanation:

Almost all stoichiometric problems can be solved in just four simple steps:

: Balance the equation. Convert units of a given substance to moles.

Using the mole ratio, calculate the moles of substance yielded by the reaction.

Convert moles of wanted substance to desired units.

Under a gold standard, as trade takes place, the importing nation experiences a decrease in its gold reserves and a corresponding decrease in its money supply, while the exporting nation experiences the opposite.

This is because under a gold standard, the value of a country's currency is directly tied to the amount of gold it holds in reserve. When an importing nation buys goods from an exporting nation, it must pay for those goods in gold or a gold-backed currency. As a result, the importing nation's gold reserves and money supply are depleted, while the exporting nation's gold reserves and money supply increase. This can have implications for international trade imbalances and can contribute to currency fluctuations and financial instability.

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The name of the halogen in the 5th period is Iodine.

The chemical elements included in the 17th group of the periodic table are called halogens and they are useful in producing metal salts, as their name suggests.

Chemical element iodine has the atomic number 53 and the letter I in its symbol. The heaviest of the stable halogens, it occurs under normal conditions as a semi-lustrous, non-metallic solid.

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Answer: what is the question

Explanation:

Answer:

They have different molecular structures and different properties.

Answer:

23.4 x 10¹²mm

Explanation:

 Given problem;

  Convert Gm to mm;

   Gm  = Gigameters

    mm  = millimeters

   1 Gigameter  = 1 x 10⁹m

    1000mm = 1 m

To convert from Gm to mm;

       23.4 Gm x \(\frac{1 x 10^{9} m}{1Gm}\) x \(\frac{1000mm}{1m}\)   = 23.4 x 1 x 10⁹ x 10³   =

                                                    = 23.4 x 10¹²mm

Answer:The amount of energy used or released as heat in a reaction.

Explanation:

My friend is wrong because to calculate moles, we must divide the mass by molar mass.

The number of moles of a substance refers to the base unit of amount of substance; the amount of substance of a system which contains exactly 6.022 × 10²³ elementary entities.

The number of moles in a substance can be calculated by dividing the mass of the substance by its molar mass as follows;

moles = mass (g) ÷ molar mass (g/mol)

According to this question, I have 19.7grams of a material and want to determine the number of moles in this material. The friend is wrong because moles can only be determined using the above method.

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When you walk over a sidewalk with barefoot, your feet make contact with the surface, which conducts heat to your feet.Convection drives the majority of heat energy in the atmosphere.

Conduction transfers heat from heated sand to a bottoms of your feet.Heat is transferred by conduction when two items come into contact.Heat energy passes from the warmer to the colder of two materials when their temperatures differ.

conduction Three methods exist for transferring heat: conduction, convection, and radiation.Energy is transferred directly from one atom to another through conduction.

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Explanation:

1 mol of Ba(OH)2 = 2 moles of HCl

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Interspecific competition often leads to extinction. The species that is less well adapted may get fewer of the resources that both species need. As a result, members of that species are less likely to survive, and the species may go extinct.

Al(s) + CuSO4(aq) Al2(SO4)3(aq) + Cu, which is how much aluminum sulfate is produced in the process (s).

Your lung health is impacted by haze pollution, which contains a lot of sulfates and irritates the lungs. Skin that is dry. The use of sulfates in cosmetic products frequently results in dry skin. Sulfates can trigger reactions in sensitive persons whether they are found in shampoo, soap, or laundry detergent.

Many different food products use sulfate salts in the food sector. They include foods like breads, puddings, gelatins, pudding mixes, and preserved fruits and vegetables. Chemical processing is the principal industrial application for sulfate.

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The required heat in BTU, for the water at 50°C to become ice at -50°C is 209 BTU/lb.

To determine the required heat in BTU, for the water at 50°C to become ice at -50°C, we need to calculate the heat of fusion and the heat of cooling of water. We can use the following formula to calculate the required heat.

Q = mL

Where:Q is the required heat in BTU.

m is the mass of water in pounds.L is the specific heat of water at the desired temperature.

Lf is the heat of fusion of water.

Lc is the specific heat of ice.

Using the above formula, we get;

Q = mLf + mL + mLc

The heat of fusion of water is 144 BTU/lb

The specific heat of water at 50°C is 1.00 BTU/lb °F.

The specific heat of ice is 0.5 BTU/lb°F.

We know that: 1°C = 1.8°F.

So,50°C = 122°F and -50°C = -58°F

Also, the mass of water is not given, so let us assume that the mass of water is 1 lb.

Thus;

Q = mLf + mL + mLc

Q = 1(144) + 1(1.00)(122-32) + 1(0.5)(-50-0)

Q = 144 + 90 + (-25)

Q = 209 BTU/lb

Therefore, the required heat in BTU, for the water at 50°C to become ice at -50°C is 209 BTU/lb.

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In ethylene (H₂C=CH₂), each carbon atom uses its 2p orbital to form the pi-bond.

Ethylene (H₂C=CH₂) is a colorless, odorless, and nonflammable gas that has a sweet and musky odor. Ethylene is a hydrocarbon and is the simplest alkene. It is a simple organic compound that is commonly used in the chemical industry. Ethylene is widely used in the manufacturing of plastics, rubber, and other synthetic materials, as well as in the production of fruits and vegetables. When we talk about the formation of a pi-bond between two carbon atoms, it is necessary to know that each carbon atom has two unhybridized p orbitals that are perpendicular to the plane of sp² hybridization. The unhybridized 2p orbitals can overlap sidewise to form a pi-bond between two carbon atoms. In ethylene, each carbon atom uses its 2p orbital to form the pi-bond.

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Answer:

Positive

Explanation:

If an atom has more protons than electrons, its overall charge will be positive. Protons have a positive charge, electrons have a negative charge.

According to the given information CaCl₂(s) are the particles arranged in a crystal structure.

The correct option is A.

A crystal system is composed of a number of axes. Or, to put it another way, the structure is an arranged grouping of atoms, ions, or molecules. The crystal structure is made up of bonded atoms, atom clusters, or molecules. Due to the constituent particles' innate propensity to arrange themselves in symmetrical patterns, this structure forms.

This inorganic salt is crystallized calcium cations and chlorine anions. Ions are grouped in a systematic way.

Ethane (C₂H₆) is a gas; the symbol for a gas in chemistry or its physical state is g. Gases lack a solid structure.

Methanol (CH₃OH) is a liquid; the symbol for liquids in chemistry is l, and it lacks a structural structure.

Since water dissolves calcium iodide, the resulting aqueous solution (aq) lacks a crystal structure.

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