Compared to an atom of c-12 an atom of c-14 has a greater.
Answers
An atom of C-14 has the same number of protons as an atom of C-12, but a greater mass number due to the presence of more neutrons.
An atom of carbon has six protons and its atomic number is six. An atom of C-12, a stable isotope of carbon, has six neutrons while an atom of C-14, an unstable isotope of carbon, has eight neutrons. Thus, an atom of C-14 has a greater mass number than an atom of C-12 due to the presence of more neutrons, even though they have the same number of protons and atomic number.
An atom's atomic number is the number of protons present in its nucleus, whereas its mass number is the number of protons plus the number of neutrons. Since C-14 has the same number of protons as C-12 but more neutrons, it has a greater mass number than C-12, while the number of electrons in both atoms is the same. As a result, the correct answer is that compared to an atom of C-12, an atom of C-14 has a greater mass number.
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Complete question is:
Compared to an atom of c-12 an atom of c-14 has a greater
number of electrons
number of protons
atomic number
mass number
Related Questions
true/false. fe2o3 and al2o3 have similar chemical properties
Answers
The given statement \(Fe_2O_3\) and \(Al_2O_3\) have similar chemical properties is False.
While both \(Fe_2O_3\) (iron oxide) and \(Al_2O_3\) (aluminum oxide) are metal oxides, they have different chemical properties due to the difference in the nature of the metal cations they contain. \(Fe_2O_3\) is a red-brown solid that is insoluble in water and acidic solutions, but soluble in strong acids. It is commonly used as a pigment, and also has applications in the production of steel and other iron-based materials.
\(Al_2O_3\) , on the other hand, is a white crystalline solid that is also insoluble in water, but is stable in both acidic and basic solutions. It has a wide range of applications, including as a refractory material, a catalyst support, and an abrasive.
In summary, while \(Fe_2O_3\) and \(Al_2O_3\) are both metal oxides, they have different chemical properties and therefore have different uses and applications.
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An element’s most stable ion forms an ionic compound with bromine, having the formula XBr2. If the ion of element "X" has a mass number of 230 and has 86 electrons, what is the identity of the element, and how many neutrons does it have?
Answers
Answer:
88
Explanation:
The ion has a charge of 2+, therefore the number of neutrons it possess is 86+2
which equals 88
The element X having a mass number of 230 and has 86 electrons is radium and has 142 neutrons.
An atom is composed basically of electrons, protons and neutrons. In a neutral atom, the number of protons and electrons are equal. The number of neutrons is the difference between the mass number and the number of protons (atomic number).
Since we know that the ion of the element X has 86 electrons and the compound formed is XBr2, it then means that neutral X has 88 electrons.
The number of electrons in the neutral atom is the same as the number of protons or atomic number. An element can be identified by its atomic number. The element having atomic number 88 is radium.
The number of neutrons is obtained as;
Mass number - atomic number
230 - 88 = 142 neutrons
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What will happen if you put a metal object to the beaker??
Answers
Answer:
umm i guess if there is a liquid inside it would rise to the top and the metal would sink to the bottom
Which of the following best describes bases? A. They feel slippery and taste sour. B. They turn red litmus paper blue and react with metals. C. They taste bitter and react with carbonates. D. They turn red litmus paper blue and taste bitter.
Answers
Answer: D. They turn red litmus paper blue and taste bitter.
Explanation:
Acids are those substances which either donates hydrogen ions when dissolved in water. They have pH ranging from 1 to 6.9. They are sour in taste. They dissolve metals to give hydrogen gas. They turn blue litmus red.
Bases are those substances which either donates hydroxide ions when dissolved in water or donates a pair of electrons. They have pH ranging from 7.1 to 14. They are bitter in taste. They are slippery in nature. They turn red litmus blue.
as a learner, how will you prepare yourself when this thing will happen ? how ready are you ?
pakisagot po ng maayos
Answers
After a workout, most people show signs of strength, warmth, contentment, fulfillment, success, and accomplishment.
What do strength skills entail?Tenacity or bravery in the face of moral, material, psychological, or social difficulty. In a debate, persuasionBecause your power lies in the little things, be faithful in them. "New day, new vigor, new thoughts," they say. "Only constant effort and struggle may lead to strength and progress." "Until you have no other option but to be strong, you never know how strong you are." A strength is something you were born with the ability to do well and never had to learn. Consider virtues like curiosity or social intelligence. A skill is something you can learn (and eventually master) with practice. Despite being more than just the skill or knowledge itself, a competence relates to skills and knowledge.To learn more about strength, refer to:
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How many molecules of sucrose are
in 205 g C12H22011?
(C12H22O11, 342.34 g/mol)
[?]
[? ]×10¹²] molecules C12H22O11
Coefficient (green) Exponent (yellow)
I
Enter
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Answers
To begin with, sucrose is C12H22O11. Additionally, we must determine how many moles of sucrose there are in a pound of sucrose:
The moles of sucrose are 454g, 342.30g, mol1, and 1.33mol.
Is sucrose a good sugar to use?
Brief Summary According to a University of California, Davis study that was published in the Journal of Clinical Endocrinology and Metabolism, sucrose, the more "natural form of sugar," may be just as harmful to your health as HFCS.
Is sugar a healthy food?
Your body only receives sugar when you consume sucrose like soda or candy, and typically too much of it. The threat is present here. You run the risk of major health problems if you consume too much added sugar (fructose or sucrose) in your diet.
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Convert 8.00 x 1020 molecules of H2 to moles.
Answers
Answer:
1.33 x 10^-3 mol H2
Explanation:
? mol H2 = 8.00 x 1020^20 molecules H2 x 1 mol H2/6.02 ! 1023 molecules H2 = 1.33 x 10^-3 mol H2
Hope that helps!
8.00 x 10²⁰ molecules of H₂ present in 1.33 x 10⁻³ mole of H₂.
What is mole?Mole is used to define the amount of quantity of any substance and 1 mole equals to the 6.023 × 10²³ elementary entities or atoms in it.
According to the question:
1 mole of H₂ = 6.023 × 10²³ molecules of H₂
or 1 molecules of H₂ = 1 mole of H₂ / 6.023 × 10²³ molecules of H₂
To convert 8.00 x 10²⁰ molecules into mole we calculate as follow:
x mole of H₂ = (8.00 x 10²⁰ molecules x 1 mole of H₂) / 6.023 × 10²³ molecules
x mole = 1.33 x 10⁻³ mole
Hence, 1.33 x 10⁻³ mole of H₂ consist 8.00 x 10²⁰ molecules.
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Which action reflects irresponsible lab safety behavior?
Answers
It's because not wearing goggles could result in pieces of rock going into someone's eyes.
If 75.0 mg of potassium-42 was administered to a patient at 10 am on monday, how many mg will remain at 10 am on thursday of that same week? the half life of k-42 is 12 hours.
Answers
The half-life of potassium-42 is 12 hours, from Monday 10 am to Thursday 10 am, a total of 72 hours have passed (3 days).
Since each half-life is 12 hours, there are 6 half-lives in 72 hours. The amount remaining mg at 10 am on Thursday is approximately 2.34 mg.
To calculate the amount of potassium-42 remaining at 10 am on Thursday, we need to determine how many half-lives have passed since Monday. Since the half-life of potassium-42 is 12 hours, from Monday 10 am to Thursday 10 am, a total of 72 hours have passed (3 days).
Since each half-life is 12 hours, there are 6 half-lives in 72 hours.
To find the amount remaining, we can use the formula:
Amount Remaining = Initial Amount * (1/2)^(Number of Half-Lives)
Given that the initial amount is 75.0 mg, we can calculate the amount remaining as follows:
Amount Remaining = 75.0 mg * (1/2)^6
Calculating this, we find that the amount remaining at 10 am on Thursday is approximately 2.34 mg.
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From the table of available reagents select the one(s) you would use to convert cyclohexanone to the following compound:
Answers
A reagent is a compound that is used for the detection of the absence or presence of another substance.
What are reagents?Your information is incomplete as the available reagents aren't given. Therefore, an overview will be given.
Reagents are the integral part of a chemical reaction as they facilitate a reaction. A reagent is usually used tests.
Some typical examples of reagents include Tollens reagent, Fehling's reagent, Million's reagent, etc.
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The reagents that would be used to convert cyclohexanone to the following compound: hydrogen cyanide, potassium cyanide, and H₃O⁺, heat.
What is cyclohexanone?It is an organic compound with a chemical formula \(\rm (CH_2)_5 CO\).
The cyclohexanone is used as Insecticides, paint and varnish remover, synthetic resins, etc.
It is not harmful to humans and animals, inhalation cause irritation.
Thus, the compound: hydrogen cyanide, potassium cyanide, and H₃O⁺, heat.
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The temperature of a liquid is decreased. what happens to the vapor pressure of the liquid as a result?
Answers
When the temperature of a liquid is decreased, vapour pressure of the liquid is also decreased as a result.
A substance's physical characteristic is vapour pressure. It is based on how quickly the chemicals evaporate and condense.The pressure of a system is directly proportional to its temperature, according to Gay Lussac's Law.
P∝T
As a result, the temperature raises the system's molecules' kinetic energy. As a result, the system's vapour pressure is likewise raised.
Therefore, When the temperature of a liquid is decreased, vapour pressure of the liquid is also decreased as a result.
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What are columns on the periodic table called? What is the significance of the columns on the periodic table?
Answers
Answer:
The vertical columns of the periodic table are called groups, or families. The significance is elements with similar properties are placed in the same vertical columns. The horizontal rows of the periodic table are called periods. The significance is that properties vary from left to right along the rows.
Explanation:
We just did this in science
Answer:
columns in the periodic table are reffered to as "periods". periods represent elements with the same number of shells i.e all elements in period 1 have 1 shell (k shell) and vice versa.
How the Bohr model explains both of these observations
Answers
The Bohr model explains the observations by suggesting that electrons exist in specific energy levels and transitions between these levels cause the observed colors.
The Bohr model of an atom explains the observations of line spectra and quantized energy levels. Line spectra is a phenomenon where atoms emit or absorb light at specific wavelengths. Quantized energy levels refer to the specific energies that electrons can possess while occupying specific energy levels.
The Bohr model explains both of these observations by proposing that electrons can only exist in specific energy levels and can move between them by absorbing or emitting photons of specific energies. An electron in an atom can exist only in one of the allowed energy levels.
These energy levels are defined by the Bohr radius formula:
\(r(n) = n^2 * h^2 / 4\)π\(^2mke^2\)
Where r(n) is the radius of the nth energy level, n is an integer representing the energy level, h is Planck's constant, m is the mass of the electron, ke is Coulomb's constant, and e is the charge of the electron.Electrons emit light when they move from a higher energy level to a lower one and absorb light when they move from a lower energy level to a higher one.
The energy of the photon emitted or absorbed is equal to the difference in energy between the two levels. This explains why line spectra occur, as each atom emits or absorbs light at specific wavelengths corresponding to the energy difference between its allowed energy levels.The Bohr model's proposal of quantized energy levels provides an explanation for the stability of atoms. Electrons in an atom can't exist between energy levels, so they can't radiate energy and spiral into the nucleus.
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which statement provides an accurate description of plastic?
Answers
" It is a synthetic substance made with natural materials."
Plastics are high molecular mass organic polymers that frequently incorporate additional materials.
Typically, they are synthetic and come from petrochemicals.
Plastics are produced from natural resources including coal, natural gas, salt, and crude oil through the polymerization process.
The process of joining monomer molecules in a chemical reaction to create polymer chains or three-dimensional networks is known as polymerization, in the field of polymer chemistry.
These monomers combine to create a lengthy chain that gives rise to a final product with particular features. Polymerization refers to the entire process of a polymer being created. Polymers include things like polythene and nylon 66.
Thus, we can define plastics as synthetic materials produced from natural resources.
Plastics are therefore a synthetic material made from natural materials.
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Arrange Cu, Ca, Na, Zn and Au on the basis of their decreasing reactivity.
Answers
Answer:
1. Sodium (Na) is the most reactive due to its lower number of shells which enables the protons in it's nucleus to attract more electrons.
2. Calcium (Ca) is next as it is a group 2 element and they can be quite reactive.
3. Zinc (Zn) is the third reactive as transition metals are not very reactive.
4. Copper (Cu) is less reactive than Zinc because it is closer to the center of the periodic table and therefore has more stability.
5. Gold (Au) is the least reactive.
6
What is the density of a substance that has a mass of 2.0 g, and when placed in a graduated cylinder
the volume changed from 70 mL to 75 mL?
A 2.5 g/mL
B 7.0 g/mL
C 10. g/mL
D 0.40 g/mL
Answers
The density of the substance having a mass of 2.0 g is 0.4 g/mL (Option D)
How do I determine the density of the substance?First, we shall obtain the volume of the substance. This can be obtained as follow:
Volume of water = 70 mL Volume of water + substance = 75 mL Volume of substance =?Volume of substance = (Volume of water + substance) - (Volume of water)
Volume of substance = 75 - 70
Volume of substance = 5 mL
Finally, we shall determine the density of the substance. This is illustrated below:
Mass of substance = 2.0 gVolume of substance = 5 mLDensity of substance = ?Density = mass / volume
Density of substance = 2 / 5
Density of substance = 0.4 g/mL
Thus, the density is 0.4 g/mL (Option D)
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How many HCL-molecules in 1,5mol HCL
Answers
Answer:
number of molecules =9.03×10^23
Explanation:
use the equation
n=number of molecules /Av.constant
make number of Molecules become the subject of the formula by multplying Av.constant on both sides of the equation,
number of molecules=n×Av. constant ,where Av.constant is 6.02×10^23
number of molecules=1.5mol×6.02×10^23
=9.03×10^23
Compute the following and give your answer in scientific notation:
(3.51 x 10-²) - 2.94 × 10-²
=
× 10^
Answers
Explanation:
Move the decimal 3 times to right in the number so that the resulting number, m = 5.7, is greater than or equal to 1 but less than 10
Since we moved the decimal to the right the exponent n is negative
n = -3
Write in the scientific notation form, m × 10n
= 5.7 × 10-3
The system below was at equilibrium in a
9.0 L container. What change will occur
for the system when the container is
shrunk to 3.0 L?
51.8 kJ + H₂(g) + 1₂(g) = 2HI(g)
Hint: How many moles of gas are on each side?
A. The reactions shifts to the right (products) to produce
fewer moles of gas.
B. There is no change because there are the same
number of moles of gas on both sides.
C. The reactions shifts to the left (reactants) to produce
more moles of gas.
Answers
The number of moles of gas is the same on both sides, the change in volume will not affect the equilibrium position of the reaction. The answer is B) There is no change because there are the same number of moles of gas on both sides.
To determine the change that will occur when the container is shrunk from 9.0 L to 3.0 L for the given reaction:
51.8 kJ + H₂(g) + I₂(g) → 2HI(g)
We need to consider the number of moles of gas on each side of the reaction.
On the left side, there are 2 moles of gas (H₂ and I₂), while on the right side, there are 2 moles of gas (2HI). Both sides have an equal number of moles of gas.
Therefore, the correct answer is B) There is no change because there are the same number of moles of gas on both sides.
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The true statements from the list are:
Hydrogen gas is a better reducing agent than tin metal.
Tin metal will reduce Cu2+ to copper metal.
The cell potential for a cell consisting of tin metal immersed in a tin(II) solution and the standard hydrogen electrode is not known because it was not measured in this experiment.
Copper metal will not reduce H+ to hydrogen gas.
Explanation:
Hydrogen gas is a better reducing agent than tin metal: This is because hydrogen gas has a lower reduction potential than tin metal. A reducing agent tends to lose electrons and get oxidized, and the lower the reduction potential, the more easily it can lose electrons and act as a reducing agent.
Zn2+ is the best oxidizing agent studied in this experiment: This statement is false. The best oxidizing agent is the one with the highest reduction potential, which is a measure of its ability to gain electrons and get reduced. The statement does not provide any comparison to other oxidizing agents, so it cannot be evaluated.
Tin metal will reduce Cu2+ to copper metal: This is a true statement. Tin metal has a higher reduction potential than Cu2+, so it can donate electrons to Cu2+ and reduce it to copper metal while getting oxidized to Sn2+.
Answers
The true statements from the list are 1. Hydrogen gas is a better reducing agent than tin metal, 2. Tin metal will reduce Cu2+ to copper metal and 3. Copper metal will not reduce H+ to hydrogen gas.
1. Hydrogen gas is a better-reducing agent than tin metal: This is true because hydrogen gas has a lower reduction potential than tin metal. A reducing agent tends to lose electrons and get oxidized, and the lower the reduction potential, the more easily it can lose electrons and act as a reducing agent.
2. Tin metal will reduce Cu2+ to copper metal: This is a true statement. Tin metal has a higher reduction potential than Cu2+, so it can donate electrons to Cu2+ and reduce it to copper metal while getting oxidized to Sn2+.
3. Copper metal will not reduce H+ to hydrogen gas: This is true because copper metal has a lower reduction potential than H+. Copper metal cannot donate electrons to H+ and reduce it to hydrogen gas since it is not strong enough reducing agent compared to hydrogen.
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what is the total ionic and net ionic equation for for the reaction between between mercury (II) nitrate and iron (III) chloride.
Answers
Answer:
Hg+2 + 2Cl- -> HgCl2
HOPE THIS HELPS HAVE A GREAT DAY/NIGHT!!~
Explanation:
Pretest: Unit 1
Question 5 of 30
How can a mixture of salt and sand be separated?
A. By adding oil and collecting the layers of salt and sand
B. By dissolving the salt in water and filtering out the sand
C. By using a magnet to attract the sand
D. By allowing the salt to evaporate
SUBMIT
Answers
D. by allowing the salt to evaporate .
Answer:
D.by allowing the salt to evaporate.
Why does water dissolve polar crystals like potassium permaganate?
water is polar
water is nonpolar
water is neutral
water has more density
Question 2
Help plz
Answers
Answer:
is water polar? dissolves in water because the energy released when bonds form between the K+ ion and the negative end of the neighboring water molecules and between the MnO4- ion and the positive end of the solvent molecules compensates for the energy it takes to separate the K+ and MnO4- ions. dissolves in water because the energy released when bonds form between the K+ ion and the negative end of the neighbor
Explanation:
Which of the following would be a clue that a rock is igneous?
Answers
Answer:
It has crystals.
Explanation:
Answer:
It has Crystal's
Explanation:
They usually have that crystal like thing in them .... since they are formed.
A chemical reaction in which bonds are created is usually associated with ________.
Answers
A chemical reaction in which bonds are created is usually associated with The consumption of energy
Consumption method using, shopping for, or consuming something. If we do not lessen our power intake, we are able to run out of fuel. Conspicuous intake is shopping for something to expose off. Consumption is associated with the verb consume, which means to eat, use, or buy.
There are four Consumption kinds of client goods. They are comfort goods, distinctiveness goods, purchasing goods, and unsought goods.
Consumption of Food intake is a periodic behavior. It is brought on at diverse moments of the day through some converging factors (time of day, want a state, sensory stimulation, social context, etc.).
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The density of gold is 19.3 g/cm3. If the volume of a nugget of gold is 3 cm3, what is its mass?
Answers
Answer:
57.9g
Explanation:
\(density = \frac{mass}{volume} \)
\(mass = density \times volume\)
mass= 19.3g/cm3 x 3cm3 = 57.9g
Which of the following is the main form of intermolecular attractions among water molecules?
a. ion-dipole
b. polar-induced polar
c. hydrogen bonding
d. covalent bonding
e. induced dipole-induced dipole
Answers
The main form of intermolecular attractions among water molecules is hydrogen bonding. This type of intermolecular force is relatively strong and plays a significant role in shaping the unique properties of water.
Among the given options, the main form of intermolecular attractions among water molecules is hydrogen bonding. Hydrogen bonding is a specific type of intermolecular force that occurs when a hydrogen atom covalently bonded to an electronegative atom (such as oxygen, nitrogen, or fluorine) interacts with another electronegative atom in a different molecule.
In the case of water (H2O), each water molecule consists of two hydrogen atoms covalently bonded to an oxygen atom. The oxygen atom in one water molecule is partially negatively charged due to its higher electronegativity, while the hydrogen atoms are partially positively charged. These partial charges create regions of positive and negative polarity within the water molecule.
When water molecules come into proximity, the partially positively charged hydrogen atom of one water molecule is attracted to the partially negatively charged oxygen atom of a neighboring water molecule. This attraction is known as a hydrogen bond. It is a relatively strong intermolecular force and contributes significantly to the unique properties of water.
Hydrogen bonding is responsible for several important characteristics of water, such as its high boiling point, surface tension, and ability to dissolve many substances. These properties are crucial for the role of water in biological systems and its importance as a universal solvent.
The main form of intermolecular attractions among water molecules is hydrogen bonding. Hydrogen bonding occurs between the partially positively charged hydrogen atom of one water molecule and the partially negatively charged oxygen atom of a neighboring water molecule.
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a 12.0-g sample of helium gas occupies a volume of 14.3 l at a certain temperature and pressure. what volume does a 24.0-g sample of neon occupy at these conditions of temperature and pressure? group of answer choices 5.67 l 28.6 l 22.4 l 36.0 l 11.3 l
Answers
The solve this problem, we need to use the ideal gas law equation PV = north. Since we are dealing with the same temperature and pressure for both gases, we can set up a ratio using the number of moles of each gas, which is proportional to their respective masses.
The First, we need to calculate the number of moles of helium using its mass and molar mass n(He) = 12.0 g / 4.00 g/mol = 3.00 mol Next, we can use the same equation to solve for the volume of the helium PV = north V(He) = n(He)RT / P V(He) = (3.00 mol) (0.0821 Latam/Molk)(T) / (P) We don't know the exact temperature or pressure, but we can assume that they are constant for both gases. Therefore, we can eliminate them from the equation and use the ratio of the number of moles. V(Ne) / V(He) = n(Ne) / n(He) n(Ne) = 24.0 g / 20.18 g/mol = 1.19 mol V(Ne) / 14.3 L = 1.19 mol / 3.00 mol V(Ne) = (1.19 mol) (14.3 L) / 3.00 mol V(Ne) = 5.67 L Therefore, the volume that a 24.0-g sample of neon gas would occupy at the same temperature and pressure as the 12.0-g sample of helium gas is 5.67 L. Answer 5.67 L
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What causes the electron groups around a central atom to similarly spread out as much as possible?
Answers
Answer:
The repulsion between negatively charged electron pairs in bonds or as lone pairs causes them to spread apart as much as possible.
Lanthanum-138 has a half-life of 105 billion years. after 525 billion years, how much of a 240 g sample of this radioisotope will remain? grams
Answers
The amount of the 240 g sample of the radioisotope that will remain after 525 billion years is 7.5 g
How to the number of half-lives that has elapsedHalf-life (t½) = 105 billion years Time (t) = 525 billion years Number of half-lives (n) = ?n = t / t½
n = 525 / 105
n = 5
How to determine the amount remainingOriginal amount (N₀) = 240 gNumber of half-lives (n) = 5Amount remaining (N) = ?N = N₀ / 2ⁿ
N = 240 / 2⁵
N = 240 / 32
N = 7.5 g
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Answer:
7.5
Explanation:
edge