what is lost in an atom as a result of radioactive decay? what equation relates this loss to energy produced?

Answer:

we know that it was the vinegar and baking soda because gas had been created, the gas was held within the bubbles. the gas that was created was called Carbon Dioxide or CO2

Answer:

C8H20P4F8

Explanation:

Molecular formula is based off a ratio of the molecular formula's molar mass divided by the empirical formula's molar mass.

The molar mass of the empirical formula C2H5PF2 is 98.02g. We find this by adding the molar masses of all elements in the formula, multiplied by their subscripts.

2(12.01) + 5(1.01) + 30.97 + 2(18.99) = 98.02

We then divide the molecular molar mass by the empirical molar mass.

392.16/98.02 = 4

This tells us that the molecular formula has 4 times the mass of the empirical formula. Because mass comes from the elements in the formula, we multiply all the subscripts by 4 to get the molecular formula.

2x4 = 8

5x4 = 20

1x4 = 4

2x4 = 8

So the molecular formula is C8H20P4F8

The planet's albedo has ability to reflect light.

The planetary albedo would be the percentage of incoming solar radiation that Earth scatters back into space. The processes that control the quantity, distribution, and fluctuation of this reflected energy are crucial to the Earth's energy balance and have a significant impact on both climate including climate change.

Temperatures rise as a result of carbon dioxide, prolonging the growing season as well as raising the humidity. Each of these elements has stimulated some further plant growth. But hotter weather also stresses plants. Plants require more water to live in an extended, warmer growing season.

Therefore,  the planet's albedo has ability to reflect light.

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Answer:

Partial pressure of H₂ = 0.9556 atm

Explanation:

Given:

Barometric pressure = 753 torr

Vapor pressure of water = 26.74 torr

FInd:

Partial pressure of H₂

Computation:

Partial pressure of H₂ = Barometric pressure - Vapor pressure of water

Partial pressure of H₂ = 733 - 26.74  

Partial pressure of H₂ = 726.26 torr

1 atm = 760 torr

So,

Partial pressure of H₂ = 726.26/760

Partial pressure of H₂ = 0.9556 atm

Answer:

0.41 and 0.02 moles Au

Explanation:

Moles:

81 grams (2.6 troy oz):

mole Au = 81g/(196.97 g/mole) = 0.41 moles Au

4.0g (0.13 oz):

mole Au = 4.0g/(196.97 g/mole) = 0.020 moles Au

The volume of acetic acid = 50 ml

Given

50.00 ml of  0.200 M NaOH

0.200 M HC2H302

Required

Volume of acid

Solution

Equivalence point : moles of acid= moles of base.

The two solutions are acid (acetic acid) and base (NaOH)

Acid-base titrations can be formulated

M₁V₁n₁=M₂V₂n₂

n = acid base valence(For acetic acid and NaOH n=1)

Input the value :

0.2 x V₁ x 1 = 0.2 x 50 x 1

V₂ = 50 ml

Answer:

Star 1 and two. Good on exams I'm doing mine two

Answer:star 1 and 2

Explanation:

ANSWER:

B. been incredibly dense? I'm not sure sorry

Answer: During a chemical change, the composition of matter always changes

Explanation:

Answer:

For any given element, ionization energy increases as subsequent electrons are removed. For example, the energy required to remove an electron from neutral chlorine is 1251 kJ/mol. ... An even sharper increase in ionization energy is witnessed when inner-shell, or core, electrons are removed.

Hope it helps :)

Answer:

the answer is A, they are measured in kilograms

The gram formula mass of the product, PCl₃, is 137.5 g.

The amount of a compound that has the same mass in grams as the formula mass in an atomic mass unit is said to have the compound's gram formula mass. It is also known as the molar mass.

Every element's atom has a characteristic mass, and each compound's molecule has a characteristic mass determined by the compound's formula.

The gram formula mass of the product PCl₃ is calculated below:

The atomic mass of P = 31 g

The atomic mass of Cl = 35.5 g

The gram formula mass of PCl₃ = 31 + 35.5 * 3

The gram formula mass of PCl₃ = 137.5 g

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The number of moles of ammonia produced will be: n(NH3) = 2/3 × n(H2) = 2/3 × 1.85 mol = 1.23 molHence, the number of moles of ammonia that can be produced from the reaction of 4.0 liters of hydrogen at 50.0°C and 1.2atm of pressure with excess nitrogen is 1.23 moles.

The reaction between hydrogen and nitrogen gas produces ammonia. The balanced chemical equation is given below: N2(g) + 3H2(g) → 2NH3(g)The number of moles of a gas can be calculated by using the ideal gas law which is PV = nRT, where P is pressure, V is volume, n is the number of moles, R is the ideal gas constant, and T is temperature.The conditions of the reaction are: Volume of hydrogen, V = 4.0 L Pressure of hydrogen, P = 1.2 atm Temperature of hydrogen, T = 50.0°CThe temperature must be converted from Celsius to Kelvin by adding 273.15 to it: T = 50.0 + 273.15 = 323.15 K The pressure must also be converted to units of Pascals (Pa) since the gas constant has units of J/(mol·K): P = 1.2 atm × 101325 Pa/atm = 121590 PaNow we can calculate the number of moles of hydrogen gas: n = PV/RT = (121590 Pa × 4.0 L)/(8.314 J/(mol·K) × 323.15 K) ≈ 1.85 molesSince there is an excess of nitrogen gas, all of the hydrogen gas will react to form ammonia. From the balanced equation, we see that 3 moles of hydrogen gas are required to produce 2 moles of ammonia.

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The condensed formula (CH3)3CCO2CH(CH2CH3)2 contains an ester functional group (C).

The line structure for (CH3)3CCO2CH(CH2CH3)2 can be drawn as follows:

```

     CH3

      |

 CH3-C-C-O-CH(CH2CH3)2

      |

     CH3

```

In the line structure, each line represents a bond, and the carbon atoms are represented by the intersection of lines.

The molecule consists of a central carbon atom (marked as C) bonded to three methyl groups (CH3) and an ester group (CO2CH(CH2CH3)2). The ester group is composed of a carbonyl group (C=O) bonded to an oxygen atom, which is in turn bonded to a chain of carbon atoms (CH2CH3)2. The condensed formula (CH3)3CCO2CH(CH2CH3)2 contains an ester functional group (C).

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Doubling the initial concentration of iodine, while keeping all other factors constant, will result in an increase in the initial rate of the reaction.

Doubling the initial concentration of iodine increases the initial rate of the reaction. This is because the initial rate of a reaction is directly proportional to the concentration of the reactants.

Therefore, if the concentration of iodine is doubled, there are more iodine molecules available to react with the other reactants, resulting in a higher initial rate of the reaction.

This can be explained by the collision theory, which states that for a chemical reaction to occur, the reactant molecules must collide with each other with sufficient energy and in the correct orientation.

When the concentration of iodine is doubled, there is an increased likelihood of successful collisions occurring, leading to an increase in the initial rate of the reaction.

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Covalent bonds involve the sharing of one to three pairs of electrons between atoms. They can result in either equal distribution of electrons (nonpolar covalent bond) or unequal distribution of electrons (polar covalent bond) with slight electrical charges at different atoms.

Covalent bonds involve the sharing of one to three pairs of electrons between atoms. They do not necessarily involve the sharing of eight pairs of electrons. The number of electron pairs shared in a covalent bond depends on the number of electrons needed to complete the outer electron shells of the atoms involved.

Covalent bonds do not always result in equal distribution of electrons between atoms. The sharing of electrons can be unequal, resulting in slight electrical charges at different atoms. This is known as a polar covalent bond.

In a polar covalent bond, one atom has a greater attraction for the shared electrons compared to the other atom. As a result, the electron density is shifted towards the more electronegative atom, creating partial positive and negative charges.

On the other hand, in a nonpolar covalent bond, the electrons are shared equally between the atoms, resulting in no net charge distribution.

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Answer:

ammonia being lighter than air, is collected by downward displacement of air in an inverted gasjar

The gas jar is used to collect ammonia gas. This gas can be barely dissolved in water. As a result, the downward displacement of water does not gather it in the jar.

With the formula NH3, ammonia is a nitrogen and hydrogen inorganic chemical. Ammonia, the simplest pnictogen hydride and a stable binary hydride, is a colorless gas with a strong, pungent odor.

Because it is simpler to install inlets and outlets in one end of an erect gas jar than it is to install them on the side or the bottom, which are required for placement on a stable surface.

Ammonia is prepared in a laboratory by forcing air downward to collect the gas. Due to the high solubility of ammonia in water, it is impossible to collect ammonia gas over water.

Thus, The gas jar is used to collect ammonia gas.

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The acute inflammatory process is a reaction of the body to any injury or invading pathogen. It is a localized response that occurs when tissues are injured by trauma, bacterial toxins, heat, or any other means.

The acute inflammatory process can be divided into four stages, each of which plays an important role in the process. These stages are:1. Vasodilation and increased capillary permeability of the arterioles and venules:

The first stage of the acute inflammatory process is the vasodilation and increased capillary permeability of the arterioles and venules. This stage begins when the tissue is injured, and it is characterized by the dilation of the blood vessels.

The dilation of the blood vessels increases the flow of blood to the affected area, which leads to redness and warmth.2. Outflow of fluid and proteins from the vascular space, accumulating in the tissue spaces: The second stage of the acute inflammatory process is the outflow of fluid and proteins from the vascular space, accumulating in the tissue spaces.

This stage is characterized by the swelling and edema that occurs in the affected area.3. Leukocytes migrate toward the site of the injury by chemotaxis: The third stage of the acute inflammatory process is the migration of leukocytes toward the site of the injury by chemotaxis.

This stage is characterized by the arrival of white blood cells at the affected area. The white blood cells are attracted to the area by chemical signals that are released by the injured tissue. 4. Leukocytes respond with phagocytosis: The fourth and final stage of the acute inflammatory process is the response of leukocytes with phagocytosis.

In this stage, the white blood cells begin to engulf and digest the invading pathogen or foreign material. This process is known as phagocytosis and it is essential for the body to get rid of any harmful pathogens or foreign material. In conclusion, the four stages of the acute inflammatory process work together to protect the body from injury and infection.

The process begins with the vasodilation and increased capillary permeability of the arterioles and venules, followed by the outflow of fluid and proteins from the vascular space, accumulating in the tissue spaces, the migration of leukocytes toward the site of the injury by chemotaxis, and finally the response of leukocytes with phagocytosis.

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Answer:

sublimation:heat taken in

condensation:heat given out

evaporation:heat taken in

boiling:heat taken in

melting:heat taken in

freezing:heat given out

Processes listed can be classified into two groups based on whether heat is taken in or given out by the particles.Heat is taken in melting,evaporation, sublimation while heat is given out in boiling,condensation and freezing.

Heat taken in by the particles:

1. Sublimation: This process occurs when a substance changes from a solid directly to a gas without passing through the liquid phase. Heat is absorbed to break the intermolecular forces holding the particles in the solid phase.

2. Evaporation: This process happens when a liquid changes into a gas at temperatures below its boiling point. Heat is absorbed from the surroundings to overcome the intermolecular forces between the liquid particles.

3. Melting: Melting occurs when a solid substance changes into a liquid. Heat is absorbed to break the intermolecular forces holding the particles in the solid phase.

Heat given out by the particles:

1. Condensation: Condensation occurs when a gas changes into a liquid. Heat is released to the surroundings as the gas particles lose energy and come together to form liquid droplets.

2. Boiling: Boiling is the process where a liquid changes into a gas throughout its entire volume. Heat is released to the surroundings as the liquid particles gain energy and escape the liquid phase.

3. Freezing: Freezing is the process where a liquid changes into a solid. Heat is released to the surroundings as the liquid particles lose energy and arrange themselves into a regular pattern.

Thus, heat is taken in melting,evaporation, sublimation while heat is given out in boiling,condensation and freezing.

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The energy transformation is, Electrical to light. The answer is C.

When a battery-powered flashlight is turned on, electrical energy from the battery is transformed into light energy through a process called electroluminescence. Inside the flashlight, a circuit is completed when the switch is turned on, allowing electrical current to flow from the battery through a wire to a light bulb or LED (light-emitting diode). The electrical energy is converted into light energy, which illuminates the area around the flashlight.

The battery's chemical energy is not directly transformed into light, but rather is used to generate electrical energy that is then transformed into light. Hence option C is correct.

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--The complete question is, When a battery-powered flashlight is turned on, what type of energy transformation takes place?

A. Chemical to thermal

B. Electrical to thermal

C. Electrical to light

D. Chemical to light--

Answer: The 'mass of the object' directly affects kinetic energy

Explanation:

Answer:

15.6 moles

Explanation:

For every 2 moles of H3PO4 that is reacted, 6 moles of H2O are produced.

So if 5.2 moles of H3PO4 are reacted with calcium hydroxide, calculate the moles of H2O produced by this:

5.2 moles H3PO4 * (6 moles H2O / 2 mole H3PO4) = 15.6 moles H2O

Therefore 15.6 moles of H2O would be produced if 5.2 moles of H3PO4 are reacted with calcium hydroxide.

Answer

1 Mg + 2 HCl 1 MgCl₂ + 1 H₂

(a) 182.29 grams HCl

(b) 174.71 grams

(c) .3.0 moles of hydrogen gas

Explanation

The unbalanced equation given is:

___Mg + ___HCl ___MgCl2 + ___H2

The balanced equation is

1 Mg + 2 HCl 1 MgCl₂ + 1 H₂

(a) What mass of HCl is consumed by the reaction of 2.50 moles of magnesium?

The first step is to calculate the moles of HCl consumed.

From the balanced equation;

1 mole of Mg consumed 2 moles of HCl

So, 2.50 moles of Mg will consume

The final step is to convert 5.0 moles of HCl to mass using the mole formula.

Molar mass of HCl = 36.458 g/mol

Therefore, the mass of HCl consumed by the reaction of 2.50 mol of Mg is 182.29 grams.

(b) What mass of MgCl2 is produced if 3.67 moles of HCl react?

Also, the first step is to calculate the moles of MgCl₂ produced.

From the balanced equation;

2 moles of HCl produced 1 mole of MgCl₂

So, 3.67 moles of HCl will produce

The final step is to convert 1.835 mol MgCl₂ produced to grams using the mole formula.

Molar mass of MgCl₂ = 95.211 g/mol

The mass of MgCl₂ produced is 174.71 grams.

c. How many moles of hydrogen gas are produced when 3.0 moles of magnesium react?

From the balanced equation above;

1 mole of Mg produced 1 mole of H₂

Thus, 3.0 moles of Mg will produce

Hence, the moles of H₂ produced is 3.0 moles.

A dihalide in which the halogens are attached on adjacent carbons is called a vicinal dihalide.

Dihalides are organic compounds that contain two halogen atoms in a molecule. In particular, they are compounds containing two halogen atoms in the same molecule. They are also known as geminal dihalides because the two halogens are on the same carbon atom. Some examples of dihalides include ethylene dichloride, ethylene dibromide, and carbon tetrachloride. The halogens that make up dihalides are fluorine, chlorine, bromine, and iodine.

Vicinal dihalides: A vicinal dihalide is a type of organic compound with the molecular formula CnH2n-2X2, where X is a halogen atom and n is an integer. It is a compound with two halogen atoms attached to adjacent carbons. As a result, it is known as a vicinal dihalide. This type of compound is also known as 1,2-dihalides, as the halogen atoms are on the first and second carbons. Examples of vicinal dihalides include 1,2-dichloroethane, 1,2-dibromobutane, and 1,2-difluoroethylene. Therefore, option A is the correct answer.

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Answer:

c good luck with the answer

Answer:

Platelets

Explanation:

Those are there to heal any wounds to keep the blood from leaking through. So if you ever stop bleeding, thats why

The effective nuclear charge of sulfur is 14, and the effective nuclear charge of chlorine is 15.

Effective nuclear charge (Zeff) is a measure of the positive charge felt by the valence electrons. The effective nuclear charge (Zeff) of s and Cl is calculated using the simple formula zeff = z – s, where z is the atomic number and s is the screening constant. Screening constant (s) is the number of electrons between the nucleus and the valence electrons that shield the valence electrons from the full nuclear charge of the nucleus.

For sulfur (S), the atomic number is 16, and there are two electrons in the innermost shell and four electrons in the second shell. So, the number of valence electrons in sulfur is 6. The screening constant of S is 2. Effective nuclear charge of sulfur = z – s= 16 - 2= 14

For chlorine (Cl), the atomic number is 17, and there are two electrons in the innermost shell and eight electrons in the second shell and seven valence electrons. Therefore, the screening constant of Cl is 2. Effective nuclear charge of chlorine = z – s= 17 - 2= 15

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Answer:

Light vs electron

Explanation:

Light Microscope vs Electron Microscope. Light microscopes and electron microscopes both use radiation - in the form of either light or electron beams, to form larger and more detailed images of objects (e.g. biological specimens, materials, crystal structures, etc.) than the human eye can produce unaided.