An atom that is negatively charged because it has accepted an electron is a/an __________. Select one or more: a. ion b. isomer c. isotope d. monomer
Answers
An atom that is negatively charged because it has accepted an electron is an ion.
Hence option (a) ion is the correct answer.
An atom that is negatively charged because it has accepted an electron is an ion. An ion is an atom that has either lost or gained one or more electrons, resulting in either a positive or negative charge. Ions can be formed in different ways, such as through the transfer of electrons between atoms or through the addition or removal of electrons from an atom.
The term "negatively" in the question refers to the charge of the ion, which is negative because it has accepted an electron. This means that the ion now has more electrons than protons, giving it a net negative charge.
Therefore, the correct answer is option (a) ion
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Related Questions
Double-acting baking powers _______.
A. Form rust when combined with vinegar
B. Have two acids
C. Are part base and part acid
D. Only for cold or room-temperature recipes
Answers
Double-acting baking powders are part base and part acid. Option C is correct answer.
They contain both a fast-acting acid and a slow-acting acid, which react with the baking soda in the mixture to produce carbon dioxide gas. The double-acting process means that the first reaction occurs when the baking powder is mixed with the wet ingredients, and the second reaction occurs when the batter is exposed to heat in the oven.
This results in a more consistent rise in baked goods and can be used in a wide variety of recipes, regardless of temperature. They do not form rust when combined with vinegar, nor do they necessarily have two acids. Option c is correct answer.
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the height of the mercury in the right arm open to atmospheric pressure (760 mmhg) is 100 mm and the height in the left arm is 120 mm. 120 mm 100 mm gas what is the pressure of the gas in the bulb? (a)20 mmhg (b)640 mmhg (c)740 mmhg (d)780 mmhg
Answers
The pressure of the gas in the bulb, given that height in the right arm is 100 mm and the left arm is 120 mm, is 740 mmHg (Option C)
How do I determine the pressure of the gas?From the question given above, the following data were obtained:
Atmospheric pressure = 760 mmHgPressure due to height in right arm = 100 mmHgPressure due to height in left arm = 120 mmHgPressure due to difference in height = 120 - 100 = 20 mmHgPresure of gas =?The pressure of the gas in the bulb can be obtained as shown below:
Pressure of gas = Atmospheric presure - Pressure due to difference in height
Pressure of gas = 760 - 20
Pressure of gas = 740 mmHg
Thus, we can conclude from the calculation made above that the pressure of the gas is 740 mmHg (Option C)
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chemistry moles PLEASE HELP!! A package of foil weighs 360g. How many moles of aluminium are there in this package??
Answers
Answer:
I am not 100% sure but I think it is 26.981538
Explanation:
One day, you decide to pop some popcorn. You put the bag in the microwave, but after a couple of minutes of cooking it is clear the popcorn is not popping. Why did this happen? What steps could you take to help locate the problem?
Answers
1. How many molecules of H,O are in 4.32 moles?
Answers
Answer:
dont know
Explanation:
describe how water molecules can hydrate various substances
Answers
Answer:
Water molecules forming hydration shells around Na+ and Cl- ions. The partially positive ends of the water molecules are attracted to the negative Cl- ion, while the partially negative ends of the water molecules are attracted to the positive Na+ ion.
Explanation:
I got this from another source, I hope this helps tho!
One source of renewable energy is ocean waves. A machine like the one shown below can convert energy from ocean waves into electricity. This machine floats on the surface of the water.
a long piece of machinery in the ocean
In which situation would the generator be able to produce more electricity?
A.
The distance between wave crests increases.
B.
The time between wave crests increases.
C.
The depth of the water beneath the waves increases.
D.
The average height of each wave increases.
Answers
The situation in which the generator is able to produce more electricity is option D, the average height of each wave increases.
What is water wave?Water wave is a type of mechanical wave. Water wave is a transverse wave in which the oscillation of particles is along the direction of wave propagation.
The the water waves are highly energetic and this kinetic energy is converted to electric energy using turbines and generator. The height to the crest of the wave from the base line is called amplitude. As the amplitude increases, energy of the wave is increasing.
Thus, more the amplitude, more the energy of wave leading to greater yield of electrical energy as well. Therefore, option D is correct.
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complete the lewis dot (electron‑dot) structures for the given neutral atoms.
Answers
Lewis Dot (Electron-Dot) Structures are used to depict the valence electrons of an atom in an easy way. To create a Lewis dot structure for any element, you must first know its valence electrons.
The electrons in the outermost shell of an atom are referred to as valence electrons, and they participate in chemical reactions. Each dot in the Lewis structure represents a valence electron of the element. When representing the Lewis structure for an element with more than four valence electrons, dots may also be placed around the symbol in the shape of a triangle, a square, or a pentagon.
Here are the Lewis structures of the given neutral atoms:
Carbon (C):C has 4 valence electrons, which means there are four dots on the Lewis structure:
Oxygen (O):O has 6 valence electrons, which means there are six dots on the Lewis structure
:Nitrogen (N):N has 5 valence electrons, which means there are five dots on the Lewis structure:
Hydrogen (H):H has 1 valence electron, which means there is one dot on the Lewis structure:
Helium (He):He has 2 valence electrons, which means there are two dots on the Lewis structure:
As we have completed all Lewis Dot (Electron-Dot) structures for the given neutral atoms,
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The complete question is-
"How many valence electrons and dots are there in the Lewis Dot (Electron-Dot) structures for the following neutral atoms: carbon, oxygen, nitrogen, hydrogen, and helium?"
i am the frame word that supports cell
Answers
Answer:
blood?
Explanation:
because you need it and makes your body works
If 4.1 g of Cr is heated with 9.3 L of Cl2 gas, what mass of CrCl3 will be produced from the following equation: 2 Cr + 3 Cl2 -> 2 CrCl3``
Answers
The mass of CrCl3 will be produced from the following equation:
2Cr + 3Cl2 -> 2CrCl3 if 4.1 g of Cr is heated with 9.3L of Cl2 gas is 12g
Given the mass of Cr(m) = 4.1g
The molar mass of Cr (M) = 51g/mol
The volume of Cl2 gas (V) =9.3L = 9.3g
The molar mass of Cl2 = 71g
Given the reaction is: 2Cr + 3Cl2 -> 2CrCl3
The molar mass of CrCl3 is = 158.5g
We know that to find number of moles = mass/molecular mass of substance such that:
The number of moles of Cr (n) = 4.1/51 = 0.08
The number of moles of Cl2 = 9.3/71 = 0.13
Here the Cr acts as limiting reagent since it has less moles
The mass of CrCl3 using Cr = 0.08 x 158.5 x 2 mol of CrCl3/2 mol of Cr = 12.7g
The mass of CrCl3 using Cl2 = 0.13 x 158.5 x 2 mol of CrCl3/3 mol of Cl2 = 14g
Hence , the mass of CrCl3 produced is 12g
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What best describes the interaction described below:
Dodder and shrub. The Dodder plant grows on the shrub. The dodder takes water from the shrub and the branches of the dodder pierce the tissues of the shrub. Eventually the shrub will die.
Group of answer choices
Answers
One method of obtaining these nutrients from the shrub is through the branches of the Dodder plant penetrating the tissues of the shrub. This is an illustration of a partnership in which only one creature benefits.
What really is tissue and what does it do?Tissue is a collection of cells with a common structure and function that work as a single unit. The brain give it shape and help it retain heat and energy. ibrocartilage, epithelial tissue, muscle tissue, and nervous tissue are the four different types of tissues.
What do cells in tissue do?Your organism is made up of cells, and tissues are created when groupings of cells carry out similar tasks. Your body consists mostly of four different tissue types: connective, epithelial, muscular, and nervous tissue. Organs are cushioned and joined together by connective tissue. The skin's outer layer is made up of epithelial tissue.
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Which of the following extremophiles has evolved in conditions
of extreme drought or extreme salt, respectively?
Group of answer choices
halophile; xerophile
xerophile; thermophile
xerophile; psychrop
Answers
The extremophile that has evolved in conditions of extreme drought is the xerophile, while the extremophile that has evolved in conditions of extreme salt is the halophile.
Extremophiles are organisms that thrive in extreme environments, where most other life forms cannot survive. They have developed unique adaptations to withstand and thrive in these extreme conditions. Two types of extremophiles specifically adapted to different extreme environments are xerophiles and halophiles.
Xerophiles are extremophiles that have evolved to survive in conditions of extreme drought. They are adapted to environments with very low water availability or high water stress. These organisms have developed mechanisms to prevent water loss, such as efficient water retention and protection of cellular structures. Xerophiles can be found in desert environments and other arid regions.
On the other hand, halophiles are extremophiles that have evolved to live in conditions of extreme salt concentration. They are adapted to environments with high salinity, such as salt flats, salt lakes, and hypersaline environments. Halophiles have specialized adaptations to cope with the osmotic stress caused by high salt concentrations. They have enzymes and transport proteins that function in high-salt environments and can maintain osmotic balance within their cells.
In summary, xerophiles have evolved in conditions of extreme drought, while halophiles have evolved in conditions of extreme salt. These extremophiles showcase remarkable adaptations to thrive in their respective harsh environments.
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Students were creating flashcards to help them remember the advantages and disadvantages of petroleum. Which student's flashcard is correct? Question 6 options: a) Student A: Petroleum is a solid fossil fuel that can be used to make plastics. It is the most polluting fossil fuel. b) Student B: Petroleum is an energy-rich fossil fuel used to make gasoline. It can cause environment damage if it spills or is burned. c) Student C: Petroleum is a gas that burns cleanly and is used to generate electricity. It has to be drilled from under the ocean floor. d) Student D: Petroleum is a type of biomass that is cheap and available most everywhere. It can create greenhouse gases when burned.
Answers
Answer:
C
Explanation:
I think its correct because I think c is the right answer
Which of the following is a chemical property of matter? *
Answers
Give the ground state electron configuration for Br. A. [Ar]4s23d104p6 B. [Ar]4s23d104p5 C. [Ar]4s23d104p4 D. [Ar]4s24p6 E. [Ar]4s24d104p6
Answers
The ground state electron configuration of Br is E. [Ar]4s24d104p6. The Br has 35 electrons, and the electron configuration is determined by filling up the orbitals in order of increasing energy. The first 18 electrons fill up the first three energy levels, which are represented by the noble gas configuration of Argon ([Ar]).
The remaining 17 electrons fill up the 4th and 5th energy levels, with the 4s and 4p orbitals filling up before the 5s and 5p orbitals. Therefore, the correct configuration is [Ar]4s24d104p6.
To determine the ground state electron configuration for Br, we can follow the periodic table order. Bromine has an atomic number of 35, which means it has 35 electrons. Starting from hydrogen, we fill the orbitals in the order: 1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p.
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Identify the type of intermolecular force(s) between NH3 and another NH3 molecule. o Hydrogen bonding ONLY O Dipole-dipole forces ONLY O London dispersion forces and dipole-dipole forces O London dispersion forces ONLY O London dispersion forces, dipole-dipole forces, and hydrogen bonding
Answers
The type of intermolecular force between NH₃ molecules is hydrogen bonding ONLY.
NH₃ (ammonia) is a polar molecule due to the presence of a lone pair of electrons on the central nitrogen atom. Each NH₃ molecule contains a nitrogen atom bonded to three hydrogen atoms.
The nitrogen atom is more electronegative than hydrogen, creating a dipole moment where nitrogen carries a partial negative charge (δ-) and each hydrogen carries a partial positive charge (δ+).
Hydrogen bonding occurs when a hydrogen atom is bonded to a highly electronegative atom (such as nitrogen, oxygen, or fluorine) and forms a weak bond with the lone pair of electrons on another electronegative atom. In NH₃, the hydrogen atoms can form hydrogen bonds with the lone pairs of electrons on neighboring NH₃ molecules.
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If I started with 50grams of a radioactive isotope with a half-life of 25 years, how much of the sample would I have after 50 years?
Answers
Answer: 1
Explanation:
Express the percent composition of each
element in C10H8.
Answers
Answer:
Element Symbol Mass percent
Carbon C 93.7088
Hydrogen H 6.2912
4 Al + 302 → 2Al2O3
If a chemist does the reaction and produces 3.5 moles of aluminum oxide, how many moles of O2 were used in the reaction?
Answers
The Stochiometric coefficient between o2 and Al2O3 is 3:2
You have 3.5 moles of aluminum oxide so you have a simple equation you can solve
3.5*3=2x
According to the stoichiometry and given chemical equation ,5.25 moles of oxygen are used in the reaction to produce 3.5 moles of aluminium oxide.
What is stoichiometry?It is the determination of proportions of elements or compounds in a chemical reaction. The related relations are based on law of conservation of mass and law of combining weights and volumes.
Stoichiometry is used in quantitative analysis for measuring concentrations of substances present in the sample.
In the given chemical equation, 3 mole of oxygen produces 2 moles of aluminium oxide.
Therefore for 3.5 moles of of aluminium oxide to be produced 3.5×3/2= 5.25 moles of oxygen are used.
Thus, 5.25 moles of oxygen were used in the reaction to produce 3.5 moles of aluminium oxide.
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How do you calculate the concentration of obtained solution with 2 solutions having the same concentration but different volume?
^
50.0cm³ of 0.0250 mol/dm³ nitric acid was mixed with 40.0 cm³ of 0.0250 mol dm/³ sulfuric acid.
Answers
C1V1 + C2V2 = C3V3
where C1 and V1 are the concentration and volume of the first solution, C2 and V2 are the concentration and volume of the second solution, and C3 and V3 are the concentration and volume of the resulting solution.
In this case, we have:
C1 = 0.0250 mol/dm³ (nitric acid)
V1 = 50.0 cm³ (nitric acid)
C2 = 0.0250 mol/dm³ (sulfuric acid)
V2 = 40.0 cm³ (sulfuric acid)
We want to find C3, the concentration of the resulting solution. We can rearrange the formula to solve for C3:
C3 = (C1V1 + C2V2) / V3
where V3 is the total volume of the resulting solution, which is the sum of the volumes of the two solutions:
V3 = V1 + V2 = 50.0 cm³ + 40.0 cm³ = 90.0 cm³
Substituting the values, we get:
C3 = (0.0250 mol/dm³ x 50.0 cm³ + 0.0250 mol/dm³ x 40.0 cm³) / 90.0 cm³
C3 = 0.0250 mol/dm³
Therefore, the concentration of the resulting solution is 0.0250 mol/dm³, which is the same as the concentration of the two original solutions.
PLEASE HELP
what is civic engagement in 150 words and what are your tips on water scarcity
Answers
The term "civic engagement" describes people actively participating in their communities and society as a whole. The lack of water scarcity in many areas of the world is a serious problem brought on by causes including population increase, climate change, and pollution.
What do you mean by a lack of water?In response to changing supply and demand throughout time, water availability varies. As demand rises and/or the amount or quality of the water supply declines, there is an increase in water scarcity.
Why should we manage the water shortage?When there is a water shortage, the primary issue is that people cannot get fresh, clean drinking water. The human body can only exist for a very short time without water, and not drinking other issues with water are covered in the section below.
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Question:
What is civic engagement in 150 words?
What are your tips on water scarcity?
What is the equilibrium expression for:
fe3o4(s) + 4h2(g) <=> 3fe(s) + 4h2o(g)
kc =
a)[fe]3 [h2o]4 / [fe3o4] [h2]4
b)[fe3o4] [h2]4 / [fe]3 [h2o]4
c)[h2o]4 / [h2]4
d)[fe] [h2o] / [fe3o4] [h2]
Answers
Answer:
c
Explanation:
in kc we only consider gases and aquas not solids and liquids
Calculate the mass of 2×10^25 molecules of water
Answers
Answer:6.023*10²³ / 2*10²⁵
To find the mass of a one mole of a specific molecule, add the atomic masses of each of its component atoms.\
if a solution containing 33.17 g of lead(ii) perchlorate is allowed to react completely with a solution containing 8.564 g of sodium sulfate, how many grams of solid precipitate will be formed?
Answers
18.3 g of solid precipitate formed during the reaction.
Formula of lead(ii) perchlorate = \(Pb(ClO4)_{2}\)
Formula of sodium sulfate = \(Na_2(SO_4)\)
Reaction of lead(ii) perchlorate and sodium sulfate
\(Pb(ClO4)_{2}\) + \(Na_2(SO_4)\) ----------> \(PbSO_4(s)\) + \(2Na(ClO4)_{2}\)
moles of \(Pb(ClO4)_{2}\) = \(\frac{given mass}{ Molar mass}\)
molar mass of \(Pb(ClO4)_{2}\) =207+(35.5+ 16*4)*2
molar mass of \(Pb(ClO4)_{2}\) =207+ 99.5*2
molar mass of \(Pb(ClO4)_{2}\) =406
given mass = 33.17g
moles of \(Pb(ClO4)_{2}\) = \(\frac{given mass}{ Molar mass}\)
moles of \(Pb(ClO4)_{2}\) = \(\frac{33.17}{406}\)
moles of \(Pb(ClO4)_{2}\) = 0.0817 moles
molar mass of \(Na_2(SO_4)\) = 2*23+ 32+ 4*16
molar mass of \(Na_2(SO_4)\) = 46+32+64
molar mass of \(Na_2(SO_4)\) = 142
moles of \(Na_2(SO_4)\) = \(\frac{given mass}{ Molar mass}\)
moles of \(Na_2(SO_4)\) = \(\frac{8.564}{142}\)
moles of \(Na_2(SO_4)\) = 0.0603 moles
since in the above reaction \(Pb(ClO4)_{2}\) is the solid precipitate so we have to find the weight of \(PbSO_4(s)\) formed after the reaction.
Given that the reaction is complete so one of the 2 reactant must completely ends since \(Na_2(SO_4)\) have less number of moles than \(Pb(ClO4)_{2}\) so , \(Na_2(SO_4)\) will disappear and hence according to Stoichiometry same number of moles of \(PbSO_4(s)\) will form
so number of moles of \(PbSO_4(s)\) formed = 0.0603
so, the weight of \(PbSO_4(s)\) formed = number of moles formed * molar mass of \(PbSO_4(s)\)
so weight of \(PbSO_4(s)\) formed =0.0603 * 303
weight of \(PbSO_4(s)\) formed= 18.27 g ≈ 18.3 g
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3.25 gram of acid hx was dissolved in water and its solution was made 250cc. if 30.2 cc of acid neutralizes 25 cc of koh
Answers
The amount of KOH required to neutralize 3.25 g of acid HX dissolved in 250 cc of water is approximately 0.0052 mol, or approximately 5.2 g (assuming the molecular weight of KOH is 56.1 g/mol).
The amount of potassium hydroxide (KOH) required to neutralize the solution made from 3.25 g of acid HX in 250 cc of water can be calculated as follows: First, we need to determine the concentration of the acid HX solution. This can be done by dividing the mass of the acid (3.25 g) by its volume (250 cc) and converting the units to moles:
3.25 g / 250 cc = 0.013 mol/cc
Next, we can use the information given in the question to calculate the number of moles of KOH required to neutralize 30.2 cc of the acid HX solution:
30.2 cc * 0.013 mol/cc / 25 cc = 0.0052 mol
So, the amount of KOH required to neutralize 3.25 g of acid HX dissolved in 250 cc of water is approximately 0.0052 mol, or approximately 5.2 g (assuming the molecular weight of KOH is 56.1 g/mol).
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Harim placed 5mL of ethanol into a container that weighs 1 gram using a dropper. He already knew the density of ethanol is 0.78 g/mL.
What is the mass of the ethanol, not including the container?
Answers
Answer:
there it is fella tried on ma own consciousness
What is the formula unit for a compound made from Pb4+ and oxygen? (3 points)
PbO2
O2Pb
Pb4O2
O4Pb2
Answers
The formula unit of compound made up from Pb4+ and oxygen is PbO2.
The formula unit for a compound made from Pb⁴⁺ and oxygen is PbO₂. Therefore, option (1) is correct.
What is the formula unit?A formula unit represents the lowest whole number ratio of ions in an ionic compound. The formula mass of a substance is the sum of the atomic masses of the ions present in the formula unit of an ionic compound.
Formula unit is the empirical formula of any covalent or ionic solid compound which is used as an independent entity for stoichiometric calculations. Formula mass is also defined as the sum of atomic masses of constituent atoms in an ionic compound.
A molecule is made up of two or more elements that are covalently bonded. Also, the molecular mass gives the mass of a molecule relative to that of a carbon twelve atom which has a mass of twelve units.
As we know the valency of lead is 4 and the valency of oxygen is 2. To satisfy the valency of each other two oxygen combine with one lead (IV). Therefore, the formula unit of the compound is PbO₂.
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what is the greatest source of radiation most humans are exposed to
Answers
the equivalence point of any acid-base titration can be determined visually from a titration curve by finding the place where
Answers
Answer:
where the slope of the titration curve is the greatest
The titration curve can be used to identify the equivalency point of the titration.The volume of titrant is where the titration curve has the steepest slope.
How do you find the equivalence point on a titration curve?
The equivalency point for acid-base titrations can be identified quite quickly.A simple pH meter is used to measure the pH of the solution being titrated after different amounts of titrant have been introduced to create a titration curve.The curve can then be read to determine the equivalency point. The equivalency point is identified using thermometric titrimetry, which gauges the rate at which a chemical reaction alters temperature.The inflection point in this instance denotes the threshold at which an exothermic or endothermic process is equivalent. The pH of a solution during a titration is represented graphically by a titration curve.The equivalence point in a strong acid-strong base titration is reached when the moles of acid and base are equal, and the pH is 7. The [H+] and [OH] concentrations must be equal at some point to be considered the equivalency point.Just a little bit beyond that is the endpoint, where the indicator color totally changes and the pH shifts from acidic to basic, or vice versa. The precise halfway point between the reactions of the titrant and the acid in the buffer solution is known as the half equivalence point.Because the pKa of the acid and the pH of the solution are equal at the half equivalence point, finding this point is not too difficult. A weak-acid/strong-base titration will have an equivalent point at a somewhat basic pH.The reason for this is that while the acid is not nearly as strong and does not completely dissociate to neutralize each equivalent of the base, the base is stronger and dissociates to a greater extent.To learn more about acid base titration refer
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Consider the reaction: 2HgO(s) → 2Hg() + O2(g) Which of the following statements is correct?
A. Mercury is reduced.
B. All of these statements are correct.
C. Oxygen is oxidized,
D. Mercury(II) ion is the oxidizing agent.
Answers
The Oxygen is oxidized is the correct option.
The correct option for the given statement: Consider the reaction: 2HgO(s) → 2Hg() + O2(g) is "Oxygen is oxidized.
The given chemical equation for the reaction is:
2HgO(s) → 2Hg() + O2(g)According to the given chemical equation, the reactant HgO loses oxygen and forms elemental mercury and oxygen gas. Therefore, it can be concluded that Oxygen is oxidized.
Mercury(II) ion is the reducing agent: Reducing agents are the substances that undergo oxidation during a redox reaction, and their oxidation state decreases.
The reducing agent gets oxidized and reduces the other compound.Oxygen is the oxidizing agent:
Oxidizing agents are the substances that undergo reduction during a redox reaction, and their oxidation state increases. The oxidizing agent gets reduced and oxidizes the other compound.Mercury is reduced:
In the given chemical reaction, mercury is produced in its elemental form; this implies that it has undergone reduction.
Hence mercury is reduced.
Therefore, Oxygen is oxidized is the correct option.
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