what is the name of sc(oh)3

The absolute error that could be expected when measuring the half-life of radon-220 is 0.416 s

The following data were obtained from the question:

We can obtaine the absolute error as illustrated below:

Percentage error = (Absolute error / Actaul measurement) × 100

0.8% = Absolute error / 52

0.008 = Absolute error / 52

Cross multiply

Absolute error = 0.008 ×52

Absolute error = 0.416 s

Thus, the absolute error in measuring the half-life is 0.416 s

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ethylene glycol(CH2OH-CH2OH) is a liquid at room temperature and is soluble in water in all proportions; it is the liquid used in car radiators as antifreeze.

Ethylene effects include: fruit ripening, induction of flowering, loss of chlorophyll, abortion of plant parts, stem shortening, abscission (dropping) of plant parts, epinasty (stems bend), and dormancy. It can be produced when plants are injured, either mechanically or by disease.

Ethylene has historically been made from petroleum, but the production has been transitioning to using natural gas. The principal method of producing ethylene is steam cracking, a process which breaks down hydrocarbons through the refining of petroleum or natural gas.

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The atom with a partially or completely filled (4f) subshell in its ground state configuration is option a. Pt (platinum).

The (4f) subshell corresponds to the 4th energy level and the f orbital within that level. To determine which atom has a partially or completely filled (4f) subshell, we need to examine the electron configuration of each atom.

Option a. Pt (platinum) has the electron configuration [Xe] 4f^(14) 5d^(9) 6s^(1). The (4f) subshell is partially filled with 14 electrons.

Option b. Xe (xenon) has the electron configuration [Kr] 5s^(2) 4d^(10) 5p^(6). It does not have electrons in the (4f) subshell.

Option c. Ba (barium) has the electron configuration [Xe] 6s^(2). It does not have electrons in the (4f) subshell.

Option d. Tc (technetium) has the electron configuration [Kr] 5s^(2) 4d^(5). It does not have electrons in the (4f) subshell.

Option e. Cs (cesium) has the electron configuration [Xe] 6s^(1). It does not have electrons in the (4f) subshell.

Therefore, the atom with a partially or completely filled (4f) subshell in its ground state configuration is option a. Pt (platinum).

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Answer:

Ag+ (aq) + Cl- (aq) --> AgCl (s)

Explanation:

The addition of Fe(NO3)3 can be used to detect the presence of the -OH group.

Iron (III) nitrate or ferric nitrate is a chemical compound with the formula Fe(NO3)3. This is a reddish-orange crystalline solid that is soluble in water. It is a corrosive oxidant that is used to manufacture iron salts for water purification and iron pigments for paints and ceramic glazes. When a small quantity of Fe(NO3)3 is mixed with the unknown organic compound, the -OH group reacts with the iron (III) ions to form a complex red color precipitate Fe(OH)3. This indicates the presence of the -OH group, which is otherwise hard to detect. The color change is used to detect the presence of the -OH group. Therefore, the answer to this question is option d, -OH.

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The statement " nutrition is the acquisition of chemical substances by organisms for use as an energy source or as building blocks of cellular structures" is true.

Nutrition is indeed the acquisition of chemical substances by organisms for use as an energy source or as building blocks of cellular structures. Organisms require various nutrients, including carbohydrates, proteins, fats, vitamins, minerals, and water, to carry out their metabolic processes, maintain growth and development, and support overall health and well-being.

These chemical substances obtained through nutrition are utilized by organisms to provide energy for cellular processes, such as respiration, synthesis of biomolecules, and movement. They also serve as building blocks for the construction and repair of cellular structures, including proteins, nucleic acids, lipids, and carbohydrates.

Nutrition is a fundamental process that ensures the availability of essential nutrients for organisms to carry out their life functions effectively. Different organisms have varied nutritional requirements depending on their specific metabolic needs, lifestyles, and physiological characteristics.

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Answer:

electrons fill lower energy levels first before occupying higher energy levels.

Explanation:

The Aufbau's principle describes that electrons fill lower energy levels first before occupying higher energy levels.

In writing the electronic configuration of atoms, the Aufbau's principle is one of the most important principles to consider.

It states that "sublevels with with lower energies are filled up before those with higher energies".

Sublevels do not fill up in numerical order.

Answer:

it means that things people come up with can be tested and they can turn it into the truth or in another sense figure out if its true or not

Explanation:they can figure out if its real or not and or turn it into the facts from what people make up and or think so and so is this or that and they can find out the truth

Answer:

Explanation:

This means that the atomic mass of methane is 12.011+4(1.00794)=16.04276 g/mol.

This means that in a 37.8-gram sample of methane, there would be \((37.8)\left(\frac{25.1}{100} \right)=\boxed{9.49}\) grams of hydrogen.

Answer:

answer:-

a long-term increase in the Earth's average temperature

Answer:

Solution➔

a long term change in the Earth's climate

hope it is helpful to you

Answer: Answer

Iron is a chemical element with symbol Fe and atomic number 26. It is a metal that belongs to the first transition series and group 8 of the periodic table. It is, by mass, the most common element on Earth, right in front of oxygen, forming much of Earth's outer and inner core. It is the fourth most common element in the Earth's crust.

Explanation:

Hope this helps!

Answer:

iron:

group 8

4 orbitals

electrons per shell:2,8,14,2

26 electrons

8 valence electrons.

Explanation:

iron is in the 8th group in the periodic table because it is a transition metal and their valence shells have 8 electrons.

It has 4 electron shells because the first one can hold two electrons, the second has 8 and so on.

The total number of electrons is 26, which is equal to number of protons.

Valence electrons are in the outermost shell.

Answer:

mp -5; bp 30

Explanation:

That will be a liquid at room temperature, and it will evaporate quite quickly. Room temperature is generally considered 20 degrees Celsius. Choice B melts from a solid to a liquid at -5 degrees, so it's a liquid at room temperature as long as the boiling point is higher than 20 degrees.

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The conditions for a standard electrochemical cell. select one or more : pressure of 1 atm temperature of 298 k solution concentrations of 1 M.

The electrochemical cell is the cell that is capable of generating the electrical energy from the chemical reactions or by the use of the electrical energy to cause the chemical reaction. The conditions for a standard electrochemical cell. select one or more : pressure of 1 atm temperature of 298 k solution concentrations of 1 M.  

There are the two types of the electrochemical cells is as follows : the galvanic called the electrolytic cells. the galvanic cell is also called as the voltaic cell.

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The gas-phase decomposition of SO2Cl2 is a first-order reaction, and the rate of the reaction is given by the equation: rate = k[SO2Cl2]

The half-life of a first-order reaction is given by the equation: T1/2 = 0.693/k (a) At 600 K, the half-life for the process is 2.3 x 105 s. To find the rate constant at this temperature, we can use the half-life equation to solve for k: T1/2 = 0.693/k ;2.3 x 105 s = 0.693/k ;k = 0.693 / 2.3 x 105 s = 3 x 10^-5 s-1 , (b) At 320 degree celcius  , the rate constant is 2.2 x 10^-5 s^-1. To find the half-life at this temperature, we can use the half-life equation and substitute in the given rate constant: T1/2 = 0.693/k;T1/2 = 0.693 / 2.2 x 10^-5 s-1 ;T1/2 = 3.15 x 10^4 s Therefore, the half-life of the reaction at 320 degree celcius is 3.15 x 10^4 seconds.

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Based on the assertion and the reason regarding the weight of an object and upthrust experienced by the body in a fluid; Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).

The correct option is A.

The principle of floatation states that an object will float in a fluid if the upthrust that is experienced by the object is equal to or greater than the weight of the object.

The upthrust experienced by a body is the upward force that a liquid or gas exerts on a body floating in it.

Upthrust on a body depends on the acceleration due to gravity, the density of the liquid, and the volume of the body immersed in the liquid.

The weight of a body is the force of gravity acting on the body. The weight of a body acts downward.

Thus in a fluid, the weight of an object acts downward while the upthrust on the object acts in an upward direction.

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Answer:nokb jlbuj

Explanation:

The percent yield for each compound:

a) For NaHCO3: 100%
b) For Na2CO3: 126.2%
c) For CO2: 100%
d) For H2O: 0%

To find the percent yield, we first need to determine the theoretical yield and actual yield for each compound. The theoretical yield is the amount of product that would be obtained if the reaction proceeded perfectly, while the actual yield is the amount of product obtained in reality.

Let's calculate the theoretical yield for each compound:

a) NaHCO3(s): Since 3.08 g of NaHCO3 is given, the theoretical yield of NaHCO3 would also be 3.08 g.

b) Na2CO3(s): The given problem states that 1.04 g of Na2CO3 is obtained. However, since Na2CO3 is formed from NaHCO3, we need to consider the molar mass ratio between NaHCO3 and Na2CO3. The molar mass of NaHCO3 is 84 g/mol, and the molar mass of Na2CO3 is 106 g/mol. Using this ratio, we can calculate the theoretical yield of Na2CO3:

(1.04 g Na2CO3) × (84 g NaHCO3 / 106 g Na2CO3) = 0.824 g NaHCO3

c) CO2(g): CO2 is produced during the decomposition of NaHCO3, and it is a gas. Therefore, we need to convert the mass of NaHCO3 to moles and then use the balanced chemical equation to find the moles of CO2 produced. The balanced equation for the decomposition of NaHCO3 is:

2 NaHCO3(s) -> Na2CO3(s) + CO2(g) + H2O(g)
The molar mass of NaHCO3 is 84 g/mol.

(3.08 g NaHCO3) / (84 g/mol NaHCO3) = 0.0367 mol NaHCO3
According to the balanced equation, 1 mole of NaHCO3 produces 1 mole of CO2. Therefore, the theoretical yield of CO2 is also 0.0367 mol.

d) H2O(g): Similarly, we can use the balanced equation to determine the theoretical yield of water. According to the equation, 1 mole of NaHCO3 produces 1 mole of H2O. Therefore, the theoretical yield of H2O is 0.0367 mol.

Now, let's calculate the percent yield for each compound:

Percent yield = (Actual yield / Theoretical yield) × 100

a) For NaHCO3:
Percent yield = (3.08 g / 3.08 g) × 100 = 100%

b) For Na2CO3:
Percent yield = (1.04 g / 0.824 g) × 100 = 126.2%

c) For CO2:
Percent yield = (0.0367 mol / 0.0367 mol) × 100 = 100%

d) For H2O:
Percent yield = (0 mol / 0.0367 mol) × 100 = 0%

To summarize, the percent yield for NaHCO3 is 100%, for Na2CO3 is 126.2%, for CO2 is 100%, and for H2O is 0%.

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Answer:

silicon and germanium.

Explanation :

The passage states that at extreme pressures an elemental solid assumes the structure and bonding characteristics of a heavier element in the same column of the periodic table. The structure and bonding of diamond, which is a form of carbon, would therefore be most like other elements in the same group of the periodic table as carbon. This group contains silicon and germanium.

The molecular geometries of  SeO3, BrO31 , ClF21+ will be trigonal planar, trigonal pyramidal, bent.

Molecular geometry would be the configuration of atoms within a molecule, typically in relation to a single central atom. Electron geometry would be the configuration of electron pairs together surrounding the central atom.

The molecular geometry of the given molecule is:

SeO3 = trigonal planar

BrO3= trigonal pyramidal

ClF21+. = bent

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850 kiloliters are equal to 850,000,000 millilitres.

To convert 850,000,000 milliliters to kiloliters, we can use the conversion factor 1 kiloliter = 1,000 liters and 1 liter = 1,000 milliliters.

First, we need to convert the milliliters to liters by dividing 850,000,000 by 1,000:

850,000,000 milliliters / 1,000 = 850,000 liters

Then, we can convert the liters to kiloliters by dividing 850,000 by 1,000:

850,000 liters / 1,000 = 850 kiloliters

Therefore, 850,000,000 milliliters is equivalent to 850 kiloliters.

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The mole fractions of HNO3 and water in a concentrated solution of nitric acid is 0.38 and 0.62.

A unit of concentration is a mole fraction. The mole fraction, which is denoted by "X," is a unit of measurement for the ratio of solute to solvent in a solution. The number of moles of a particular component in the solution divided by the overall number of moles in the sample solution is known as the mole fraction.

The mole fraction of a solution is an expression of concentration given by

Xₐ = nₐ / nt

where nₐ is the number of moles of component A, and

nt is the total number of moles ( solute + solvent) present.

The number of moles we can calculate by dividing mass into molecular weight, and since we are given the concentration in percent by mass we can use this information to calculate the number of moles of the two components in the solution.

Assume 100 g of concentrated solution, so we have 68 g of HNO₃ and

( 100 - 68 ) g of H₂O.

n HNO₃ = 68 g / 63.01 g/mol = 1.08 mol HNO₃

n H₂O =     32 g/ 18.02 g/mol = 1.78 mol H₂O

nt = 1.08 mol + 1.78 mol = 2.86 mol

Now we can calculate the mol fractions:

X HNO₃ = 1.08 mol / 2.86 mol = 0.38

X H₂O =    1.78 mol / 2.86 mol = 0.62

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Here are the steps in chronological order concerning how to write an abbreviated electron configuration for an element:

1. Determine the atomic number of the element. This is the number of protons in the nucleus of the atom and is usually found on the periodic table.

2. Write the symbol of the previous noble gas in brackets. This represents the electron configuration of the noble gas, which is the closest complete energy level below the element in question.

3. Write the configuration for the remaining electrons after the noble gas. This is done by writing the number of electrons in each subshell, followed by the letter that represents the subshell (s, p, d, or f), and then a superscript to indicate the number of electrons in that subshell.

Check that the total number of electrons in the abbreviated configuration matches the atomic number of the element.

For example, to write the abbreviated electron configuration for oxygen (O), we would follow these steps:

Checking the total number of electrons, we have 2 + 4 = 6, which matches the atomic number of oxygen.

This way, you can write an abbreviated electron configuration for an element.

.

Answer:

32 degrees

Explanation:

As the combustible materials burn, some of the chemical energy is transformed into heat energy, and some are transformed into light energy. Light energy, also known as radiation or electromagnetic energy, is a type of kinetic energy that takes the form of visible light waves, such as the light from a match.

Answer: Mixture is a liquid with a solid dissolved in it

Explanation:

Mixture is all the states of matter can combine to form either solid. liquid and gas.

The any states of matter can combine and form a mixture . mixture is when two or more substance combine. mixture either be solid, liquids or gases. example salt and water is a mixture. sugar and water is a mixture. mixtures are of two types:

homogeneous mixture is the mixture in which the composition of substances is uniform. salt and water mixture the heterogeneous mixture in which the composition of matter is not uniform. like sand and soil mixture.

Thus, Mixture is all the states of matter can combine to form either solid. liquid and gas.

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Answer:

nylon 66 is made of two monomers each containing 6 carbon atoms, hexamethylenediamine and adipic acid.

An example of a  heter--ogenous mixture is the

When we are talking about a mixture our minds must have to go to a situation where we put things together but they did not undergo any kind of chemical reaction and they did not combine chemically.

If we are talking about a hom--ogenous mixture then we must know that the components of the mixture do form a single phase but if the mixture is heter--ogenous then they do not form a single phase.

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