The ionization process that requires the most energy is B. C3+ (g) → C4+ (g) + e-. This is because removing an electron from an ion with a higher positive charge requires more energy due to stronger electrostatic forces.
In order to remove an electron from an ion, energy must be supplied to overcome the attractive electrostatic forces between the positively charged nucleus and the negatively charged electron.
The energy required to remove an electron from an ion is known as ionization energy. The ionization energy generally increases as the positive charge on the ion increases, because the electrostatic forces between the positively charged nucleus and the remaining electrons become stronger.
In the given options, C3+ has a lower positive charge than C4+. Therefore, it requires less energy to remove an electron from C3+ than from C4+. The ionization energy of an atom or ion can be thought of as the amount of energy required to remove the most weakly bound electron.
Since C4+ has a higher positive charge than C3+, it will have the most tightly bound electron, requiring the most energy to remove it. Thus, the ionization process that requires the most energy is B. C3+ (g) → C4+ (g) + e-.
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Which type of precipitation can be considered acid rain?
Answer:
form of rain, snow, hail, dew, or fog that transports sulfur and. nitrogen compounds from the high atmosphere to the ground
its not a question but i wanted to tell you guys that if you guyz like my answers then please don't forget to give like and follow at the same time. I am not forcing you to follow only if you guyz like my answer then like or follow. THANKS FOR READING..
Answer:
thank you for this oibnki
Answer:
Sure I'll go ahead and like your answers and follow you if that's what you wanted! :)
Explanation:
What is not matter in chemistry??
Explanation:
Examples of things that are not matter include thoughts, feelings, light, and energy. Light, heat, kinetic and potential energy, and sound are non-matter because they are massless.
30 point. What is formed when a hydroxyl group is substituted for a hydrogen?
Answer:
alcohol
Explanation:
the atomic mass of the element cobalt is 58.933 atomic mass units. if a scientist measures the mass at 57.514 atomic mass units, what is the percent error?
Answer:
The percentage error is -2.4 %
Explanation:
The percentage error is calculated by the following formula;
\(Percentage \ error = \dfrac{Approximate - Exact }{Exact}\)
The given parameters are;
The atomic mass of cobalt = 58.933 amu. = The exact value
The mass of cobalt as measured by the scientist = 57.514 = The approximate value
Therefore, the percentage error is given plugging in the values into the above equation for percentage error as follows;
\(Percentage \ error = \dfrac{(57.514- 58.933 )}{58.933 } \times 100 = -2.41\%\)
The percentage error = -2.4 %.
You are given two beakers, one containing 0.5 gm of HCl (mat-1)
and another containing 0.5 M 250 ml HCl (sol-1). Calculate the pOH
of a solution having 800 ml of water, mat-1, and 200 ml of sol-1.
Given data: A beaker containing 0.5 gm of HCl (mat-1) of a solution having 800 ml of water, mat-1, and 200 ml of sol-1.To explain the given data, first, we need to understand the meaning of the terms used in the question:Beaker: A container used for holding, mixing, and heating liquids.Containing:'
It means that a substance is present inside the beaker.Water: A colorless, odorless, tasteless liquid that is essential for most forms of life.On the basis of given data, we can conclude that:Volume of water = 800 mlVolume of solution = 200 mlMass of HCl = 0.5 gmConcentration of HCl = mat-1From the given data, it is clear that we have two beakers. One of them contains 800 ml of water and the other one contains 200 ml of the solution. The solution contains 0.5 gm of HCl (mat-1).This solution is added to water to make a solution having a mat-1 concentration of HCl.
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Which one of the following substances would be the least soluble in CCl₄?
A) NH3
B) H2O
C) C10H22
D) CH3CH2OH
E) NaCl
The substance that would be least soluble in carbon tetrachloride (CCl₄) is B) H₂O, also known as water.
CCl₄ is a nonpolar solvent, which means it dissolves other nonpolar substances more readily than polar substances. This principle can be understood by the saying "like dissolves like." Among the given options, H₂O is a polar substance due to the presence of hydrogen bonding between its oxygen and hydrogen atoms. This difference in polarity results in poor solubility between water and CCl₄.
The other substances are either nonpolar (C₁₀H₂₂) or have lower polarity (NH₃, CH₃CH₂OH, NaCl) compared to water, making them more soluble in CCl₄. In particular, NH₃ and CH₃CH₂OH are polar but can still dissolve in CCl₄ to some extent. NaCl, an ionic compound, is less soluble than covalent compounds, but its solubility is still higher than water's.
In summary, (option B) H₂O is the least soluble substance in CCl₄ because of its strong polarity and the difference in polarity between the two compounds.
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FILL IN THE BLANK. 9.73 g of lead(iv) chloride contains enough cl- ions to make ____ g of magnesium chloride.
9.73 g of lead(iv) chloride contains enough cl- ions to make 5.31 g of magnesium chloride.
Given data:
Mass of lead(iv) chloride = 9.73 g
Molar mass of 9.73 g = 278 g/mol
Mole can be determine by using the formula:
Mole = mass / molar mass
Moles = 9.73 g / 278 g/mol
Moles = 0.035
If 9.73 g of lead(iv) chloride contains 0.035 mole of lead(iv) chloride then 5.31 g of magnesium chloride
The formula is Mgcl2 ,so the mole will be 24 + (35.5 x2) = 95.
So 2x 35.5 = 71g of Cl will be required to make 95g of Mgcl2
So 1 gram of Cl = 95/71 = 1.34g Mgcl2
So 3.95g Cl =1.34 x 3.95 = 5.28gram
Therefore, cl- ions to make 5.31 g of magnesium chloride.
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HELP PLEASE!!!!
photo above 16POINTS
+ Brainliest
I need help with questions 3 and 5 if you can’t answer one that’s OK I just need help!!!!
Someone please help some out here
Answer:
32.09 amu is that an option i’m pretty sure that’s right but i would try and make sure
Explanation:
How many moles of calcium carbonate are in 63.8 g of calcium carbonate?
Answer:
0.638 moles in 63.8g of calcium carbonate
Explanation:
predict the charge that an ion formed from sulfur would have. question 21 options: a) 1- b) 2- c) 6 d) 4 e) 3-
The charge of the ion from the sulfur atom would have 2- ionic state.
Sulfides/sulfur ions are inorganic sulfur anions of the formula S2- or compounds containing one or more S2- ions. Solutions of sulfide salts are corrosive. Sulfides also refer to a large family of chemical compounds, inorganic and organic compounds. Lead sulfide and dimethyl sulfide. Hydrogen sulfide and disulfide are conjugate acids of sulfides.
However, the name sulfide is also used in IUPAC nomenclature for compositions that do not assume the type of bond involved. Examples of such names are selenium disulfide and titanium sulfide, which do not contain sulfide ions.
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A single atom of an element has 21 neutrons, 20 electrons, and 20 protons, which elementis it?
Answer:
Calcium
Explanation:
The number of protons is the atomic number of the element. Number 20 on the periodic table is Calcium.
Which of the following mixtures could be
separated using distillation? Select all that
apply.
a. A solution of rubbing alcohol and water.
b. A solution of salt and water.
c. A solution of sugar and water.
d. An alloy of copper and gold.
Answer:
c
Explanation:
sugar and water are soluble hence can be separated using distillation
Kenny made a batch of bread dough and divided it into two balls of equal size. He measured the sizes of the dough balls and placed one in an 80°F warming cabinet and the other in a 60°F warming cabinet. The cabinets each had 75 percent humidity. Kenny let the dough expand in the warming cabinets for two hours. Leaving the dough on the pan, he then measured the sizes of the dough balls and calculated how much the dough had expanded. Kenny repeated this process with nine more batches of bread dough, alternating which warming cabinet was set to 80°F and which was set to 60°F.
Answer:i think it is 350°F
Explanation:
What is 876 millimeters to decameters?
Answer: 0.0876 decameters
Explanation:
10000 mm=1 dm
876/10000=0.0876 dm
What elements makeup Earth's atmosphere
Answer:
78 percent nitrogen, 21 percent oxygen, 0.9 percent argon, and 0.1 percent other gases.
Explanation:
Hope this helps!
If a gas at 25.0°C occupies 2.5 liters at a pressure of 3.50 atm, what will
be its volume at a pressure of 1.75 atm?
Answer:
The final pressure of the gas is 5 liters.
Explanation:
Let suppose that gas experiments an isothermal process and is an ideal gas. Hence, volume is inversely proportional to pressure, that is:
\(P_{1}\cdot V_{1} = P_{2}\cdot V_{2}\) (1)
\(P_{1}, P_{2}\) - Initial and final pressure, in atmospheres.
\(V_{1}, V_{2}\) - Initial and final volume, in liters.
If we know that \(P_{1} = 3.50\,atm\), \(V_{1} = 2.5\,L\) and \(P_{2} = 1.75\,atm\), then the final volume of the gas is:
\(V_{2} = \frac{P_{1}}{P_{2}}\cdot V_{1}\)
\(V_{2} = 5\,L\)
The final pressure of the gas is 5 liters.
An experiment was conducted in order to determine the enthalpy change that occurs when 1.0 mole of ice at 0 degrees Celsius melts and becomes 1.0 mole of water at 0 degrees Celsius. The enthalpy change associated with this process is referred to as the heat of fusion of ice. In the experiment a 9.68g sample of ice at 0 degrees Celsius was added to the coffee cup calorimeter containing 278.25 mL of distilled water. The temperature of the water was 22.485 degrees Celsius before The ice was added. The lowest temperature that was recorded after the ice had melted was 19.050 degrees Celsius.
A) find the amount of heat lost or gained by the water in the calorimeter.
B) in this experiment the ice melted and then the temperature of the water produced by the ice increased from 0 degrees Celsius to 19.050 degrees Celsius. Calculate the amount of heat absorbed by the melted ice as it’s temperature increased from 0.000 degrees Celsius to 19.050 degrees Celsius
C) calculate the heat that was gained by the ice during melting process
D) calculate the heat of the fusion of ice
E) is the reaction endothermic or exothermic?
F) energy was transferred from one system to another during this experiment. Identify the two interacting systems and outline the direction of energy flow.
G) was energy conserved in the process? Justify your answer.
Answer: 1
Explanation:
Experiment on enthalpy change.
The enthalpy is a hydrodynamic system that is made to collect the internal energy. The product is of pressure and volume. The experiment was conducted to see the enthalpic change that occurred at a 1.0 mole of ice at 0 degrees.
The answer is 9.68 grams.
The enthalpy change linked with the process is called as a fusion of heat of the ice. The temperature of the water was 278.25 ml hat of distilled water and the calorimeter consisted of 278.35 ml of water.The enthalpy change linked with this process is referred to as the heated fusion of ice. In the experiment a 9.68g sample.Learn more about the experiment was conducted.
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In the spring, Florida plants respond to ________.
increased daylight hours and temperature
decreased daylight hours and temperature
increased daylight hours and decreased temperatures
decreased daylight hours and increased temperatures
The answer is (A), Greater growth and activity are seen in plants during Florida's spring season, which is mainly caused by a combination of two environmental factors: longer daylight hours and warmer temperatures.
What kinds of flora can you find in Florida?The Atlas of Florida Vascular Plants estimates that Florida is home to more than 4,200 plant varieties that are not grown in cultivation. Nearly 3,000 of those 4,200 species are regarded as local. The bulk of plants are terrestrial, or land-based.
What blossom is unique to Florida?One of the cheeriest plants you can cultivate in your garden is the coreopsis, the official state flower of Florida. However, plant breeders have been hard at work and you can now find choices with single or double flowers, or blooms in hues of gold, yellow, and even orange, red, and pink.
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When an atom of calcium (Ca) forms an ion by losing two electrons, what is the ion’s type and charge?
cation, 2+
anion, 2−
cation, 2−
anion, 2+
Answer:
cation +2
Explanation:
A cation is a positively charged ion, while an anion is a negatively charged ion. Contrary to how it sounds, when an atom loses electrons, it's charge becomes more positive. Since the calcium atom lost 2 electrons, it is a positive (+2) ion.
The electrical charge of the calcium ion is +2.
Inside Earth, it is very hot and this source of heat called
Answer:
Geothermal energy
Explanation:
Hope that helps !!!
which of the following would be the most soluble in water? question 4 options: a) cacl2 b) c6h6 c) ch3ch2ch3 d) c2h2 e) ch4
The most water-soluble of the aforementioned chemicals is ethylene glycol (HOCH2 CH2 OH). Two of the hydroxy groups in ethylene glycol create hydrogen bonds with one another.
What makes water so soluble?Water is a great solvent that can dissolve a wide variety of compounds due to its polarity and capacity to create hydrogen bonds. Because it is more polar than methane, methanol dissolves better in water. Water is polar, whereas methane is non-polar.
What substances dissolve best in water?All salts of sodium, potassium, and ammonium are water soluble. 3. All metals, with the exception of lead, silver, and mercury(I), have chlorides, bromides, and iodides that are soluble in water. In water, HgI2 is insoluble.
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How many moles are in 164 x 1021 atoms of potassium?
Suppose that placing 0. 3 inch of lead in front of a gamma source reduces the count rate from 996 cps to 613 cps. What is -1m in g / cm2 ? the density of lead is 11. 4 g / cm3. G / cm2
The thickness of lead in grams per square centimeter (-1m in g/cm²) is approximately 0.624 g/cm².
To calculate the thickness in grams per square centimeter (-1m in g/cm²), we can use the following equation:
Thickness (g/cm²) = (Density of material) * (Thickness in cm)
Given:
Density of lead = 11.4 g/cm³
Initial count rate = 996 cps
Final count rate = 613 cps
The reduction in count rate is due to the absorption of gamma radiation by the lead. We can use the formula:
Reduction in count rate = Initial count rate - Final count rate
Plugging in the values:
Reduction in count rate = 996 cps - 613 cps
Reduction in count rate = 383 cps
Now, let's convert this reduction in count rate to a thickness of lead in grams per square centimeter. We can assume a linear relationship between the reduction in count rate and the thickness of lead.
Thickness (g/cm²) = (Reduction in count rate) / (Initial count rate) * (-1m in g/cm²)
Plugging in the values:
383 cps = 613 cps * (-1m in g/cm²)
Rearranging the equation to solve for (-1m in g/cm²):
(-1m in g/cm²) = (383 cps) / (613 cps)
Calculating the value:
(-1m in g/cm²) = 0.624
Therefore, the thickness of lead in grams per square centimeter (-1m in g/cm²) is approximately 0.624 g/cm².
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Identify the limiting reactant when 9.0 L CS reacts with 18.0 L O .CS2(g) + 3O2(g) CO2(g) + 2SO2(g)
The limiting reactant in the given reaction is CS (carbon disulfide).
To determine the limiting reactant, we need to compare the amount of each reactant used with the stoichiometry of the balanced equation. Since the balanced equation shows that the molar ratio between CS and O2 is 1:3, we need to convert the given volumes to moles using the ideal gas law. After comparing the moles of CS and O2, we find that CS is the limiting reactant.
Therefore, CS is the limiting reactant in the reaction. It means that all the CS will be consumed before the O2 is completely utilized, limiting the amount of product that can be formed.
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There are millions of organic compounds but only thousands of inorganic compounds because:______
Answer:
There are millions of organic compounds but only thousands of inorganic compounds because:
a. organic compounds were formed by living things.
b. there is more carbon on Earth's surface than any other element.
c. atoms of elements other than carbon never combine with themselves.
d. carbon atoms can combine with up to four other atoms, including other carbon atoms.
You poured out a little (or a lot) too much of a chemical solution. it is ok to pour it back into the bottle.
a) true
b) false
(b) false
It is not ok to pour it back in the bottle
Once a chemical is taken outside its bottle or container , it reacts with various gases present in the natural environment and also with those chemical which are being released in that laboratory.This will become a source of possible contamination for the entire contents of the stock bottle.The disposal of entire chemicals should be done as per instructed on the reagent bottle to prevent any dangerYou should never put the used spatula inside the reagent bottle.Do not put the excess chemicals inside the sink also , dispose it as it was instructed on the reagent bottle.To know more about chemical safety please refer:
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I NEED HELP
Can an element be a molecule?
Answer:
Not quite, they are different catagories.
Explanation:
A molecule is two or more atoms connected to each other. An element is an atom with a name. Think of water, a single water molecule is called H2O because it has two hydrogen atoms and one oxygen atom. Hydrogen and oxygen are both elements. Another way to see it is like, there are many kinds of animals(atoms). A specific animal would be a cat or a bird or something(the elements).
TLDR: An element can be part of a molecule, but is not one on its own.
If atmospheric pressure measurement for taking at regular intervals from sea level to the stratopause The measurements with most likely show that the pressure
Answer:
Troposphere
Explanation:
The troposphere is the lowest layer of Earth's atmosphere that extends from under the stratosphere down to the surface of the earth. Nearly all weather condition takes place in the troposphere. The troposphere contains about 75% of the atmosphere's mass and 99% of the total mass of water vapour and aerosols in the atmosphere.
Answer: Pressure decreases.
Explanation:
Atmospheric pressure is termed as the downward force applied by the weight of air against a particular area on Earth's surface. the Standard atmospheric pressure is determined by weighing the column of air occupying 1 square inch on Earth's surface which begins at sea level and moves upward to the uppermost layer of the atmosphere
Measuring the Atmospheric pressure from sea level to the stratosphere,the second layer of the atmosphere which contains the most of the ozone gas show that the pressure decreases
what do mars, pluto, and Jupiter have in common (science) in 8th grade.
Answer:
they are all planets
Explanation: