If you had a 32 gram sample of C-14 today, how much would remain in 10,470 years? Remember, the half-life is 5370 years
Answers
If we had a 32-gram sample of C-14 today, there would be 4 grams of C-14 remaining in 10,470 years.
The half-life of C-14 is 5370 years, which means that in 5370 years, half of the original sample of C-14 would decay. After another 5370 years, half of what remains would decay, and so on.
This can be modeled by the equation:
\(N = N_0(1/2)^{(t/T)\)
Where:
N is the amount of C-14 remaining after time t
N₀ is the initial amount of C-14
T is the half-life of C-14
Using the given information, we can substitute N₀ = 32 g, T = 5370 years, and t = 10,470 years into the equation to find N:
\(N = 32 g \cdot (1/2)^{(\frac{10,470 years}{5370 years})\)
N = 4 g
To know more about half-life, refer here:
https://brainly.com/question/24710827#
#SPJ11
Related Questions
.
Your brother is curious about what your compound is shaped like and he wants you to draw it for him. What formula should you use that will give him a basic idea of how it is arranged?
Baby formula
Molecular formula
Structural formula
Empirical formula
Answers
To give a basic idea of the arrangement of a compound, the best formula to use is the structural formula. The structural formula shows the arrangement of atoms and the bonds between them, which gives a visual representation of the molecule's shape.
The molecular formula only provides information on the number and type of atoms in the molecule. The empirical formula provides the simplest ratio of atoms in the molecule, but does not show the arrangement or connectivity of the atoms. The baby formula is a completely unrelated term and is not relevant to chemistry or molecule representation.
Therefore, to show the arrangement of atoms and bonds in a molecule, the structural formula is the best choice.
For more questions like Chemistry visit the link below:
https://brainly.com/question/30958745
#SPJ11
1. Which statements represent properties of intermolecular forces? Select all that apply.
As the temperature decreases, the kinetic energy of the particles increases, and the molecules will move more. This causes the Intermolecular forces to decrease.
As the kinetic energy of the particles increase, the intermolecular forces increase.
As the kinetic energy of the particles increase, the Intermolecular forces decrease.
As the distance between the particles decreases, the intermolecular forces increase.
1 of 25
NET
O
10:35
mp
Answers
Answer:
C
Explanation:
Only this choice is applicable and correct.
The inter-molecular forces of attraction between the molecules must have been broken (overcome) before the molecules can gain an increase in the kinetic energies between them.
Quick chem question!
I’ll mark BRAINLIEST!!!!! :)
Answers
Complete the formula below for the application of KVL around i1 (please ensure each term in your summation represents the voltage in V. Use the symbols I1 and I2 for the mesh currents in mA ) KVL around loop i1 : =0 V ii. Write the equation for the application of KVL around i2 KVL around loop =0 V iii. Determine the current i1 : mA iv. Determine the current i2 : mA v. Determine Vo :
Answers
the formula below for the application of KVL around i1 is KVL around loop i1: -10V + 5Ω * (I1 - I2) + 10Ω * I1 = 0.
According to Kirchhoff's Voltage Law (KVL), the sum of the voltages around a closed loop in a circuit is equal to zero. In this case, we are applying KVL around loop i1. The equation represents the sum of voltage drops in the loop, where -10V is a voltage source, 5Ω * (I1 - I2) represents the voltage drop across the 5Ω resistor due to the difference in mesh currents I1 and I2, and 10Ω * I1 represents the voltage drop across the 10Ω resistor due to the current I1. The equation is set equal to zero to satisfy KVL.
ii. KVL around loop i2: 10Ω * I2 - 5Ω * (I1 - I2) + 2V = 0
Similar to i, this equation represents the application of KVL around loop i2. The 10Ω * I2 term represents the voltage drop across the 10Ω resistor due to the current I2, the -5Ω * (I1 - I2) term represents the voltage drop across the 5Ω resistor due to the difference in mesh currents I1 and I2, and the 2V term represents a voltage source. The equation is set equal to zero to satisfy KVL.
iii. Determine the current i1: Substitute the obtained values into the equation for i1 and solve for I1 in mA.
iv. Determine the current i2: Substitute the obtained values into the equation for i2 and solve for I2 in mA.
v. Determine Vo: Substitute the obtained values for i1 and i2 into the appropriate equation representing the voltage at Vo, and calculate the value in V.
learn more about Kirchhoff's Voltage, here
https://brainly.com/question/30400751
#SPJ4
3-methyl-1-butanol (also called isoamyl alcohol or isopentyl alcohol) was mixed with an excess of acetic acid (ethanoic acid is its systematic name) and a trace of sulfuric acid (which serves as a catalyst). This reaction is an equilibrium reaction, so it is expected that not all the starting materials will be consumed. The equilibrium should lie quite far to the right due to the excess of acetic acid used, but not completely.
After an appropriate length of time, isolation of the desired product from the reaction mixture was begun by adding a volume of 5% aqueous sodium bicarbonate (NaHCO3 has an effective pKa of 7) roughly equal to the volume of the reaction mixture. Bubbling occurred and a mixture consisting of two layers resulted—a basic aqueous layer and an organic layer.
The layers were separated, and the aqueous layer was removed.
The addition of aqueous sodium bicarbonate to the layer of organic materials and separation of the layers was repeated twice. Each time the predominantly aqueous layers were removed, they were combined in the same collection flask.
The organic layer that remained after the three bicarbonate extractions were dried and then subjected to distillation to obtain a pure sample of 3-methylbutyl ethanoate (isoamyl acetate).
List all the chemical species likely to be present at the end of the reaction but before adding aqueous NaHCO3. Note that the H2SO4 was not consumed (since it is a catalyst).
Answers
At the end of the reaction before adding aqueous \(NaHCO_3\), the following chemical species are likely to be present:
3-methyl-1-butanol (isoamyl alcohol or isopentyl alcohol).Acetic acid (ethanoic acid).3-methylbutyl ethanoate (isoamyl acetate).Water.Sulfuric acid (catalyst).A Lewis structure, also known as a Lewis dot diagram, is a way to represent the chemical bonding in a molecule. It uses dots (also called electron dots or Lewis dots) to show the valence electrons on an atom, and lines to show the bonds between atoms. The goal of drawing a Lewis structure is to use the valence electrons of the atoms in a molecule to form the most stable arrangement of atoms, that is to say, to achieve the octet rule where each atom has 8 valence electrons in its outermost shell.
Learn more about chemical, here https://brainly.com/question/13145357
#SPJ4
Which ion would create a soluble ionic compound with OH-?
Ag+
Pb2+
Ni2+
Zn2+
Li+
Answers
Due to its tiny size and high charge, lithium ion is most likely to combine with OH- to produce a soluble ionic molecule. Although they have a lower solubility, Ag+, Pb2+, Ni2+, and Zn2+ can also form ionic compounds.
The proper chemical that results from the union of K+ and OH is which of the following?With potassium cation and hydroxide anion , the +1 charge already counterbalances the -1 charge, without the need for additional cations or anions. This indicates that to create a neutral chemical with the formula , one unit of each ion must be added.
Which ion is mentioned first when the name of an ionic compound is given?When naming binary ionic compounds, the nonmetal anion (element stem + -ide) comes after the cation (specifying the charge, if necessary). Without employing prefixes, it is possible to tell from the compound name how many of each element are present.
To know more about lithium ion visit:-
https://brainly.com/question/13073127
#SPJ1
which is more electronegative? select an answer and submit. for keyboard navigation, use the up/down arrow keys to select an answer. a carbon (c) b nitrogen (n) c oxygen (o) d neon (ne)
Answers
Due to the need for atoms to gain an octet, electronegativity, the ability for an atom to take an electron (better definition online) increases to the right, since you get closer to an octet to the right. It also increases going up the periodic table, since atoms lower have higher atomic radiuses, which makes it harder to gain an electron (electrons further from protons)
Whilst neon seems correct, it isn’t because it has a full octet, making its electronegativity essentially close to 0. Hope this helps!
Whilst neon seems correct, it isn’t because it has a full octet, making its electronegativity essentially close to 0. Hope this helps!
can you solve this for me?
Answers
Answer:
b...............................
Answer:
b
Explanation:
can you solve this for me?
FOR THE LOVE OF GOD SOMEONE PLEASE HELP ME
WHAT IS THE OXIDATION NUMBER OF THE S IN SO^-2 ???
Answers
Answer:
The oxidation number for sulfur in SO2 is +4.
Explanation:
To find the oxidation number of sulfur, it is simply a matter of using the formula SO2 and writing the oxidation numbers as S = (x) and O2 = 2(-2) = -4. Using the rule and adding the oxidation numbers in the compound, the equation becomes x +(-4 ) = 0. Solving for x, it is evident that the oxidation number for sulfur is +4.
An object's mass is a measure of how much matter makes it up. An object's weight is a measure of the gravitational force that acts
on it. An object's mass is always its weight
OA
equal to
ОВ.
proportional to
C.
double
OD
half of
Answers
Answer:
its a
Explanation:
Answer:
c
Explanation:
explain why iron is not for making expensive ornament
Answers
Answer:
\/
Explanation:
The material value of iron is very less because iron is an easily available metal. That's why we can't get an expensive material value with small amount of iron which is not preferable for ornament making. The iron is not visually appealing or shiny. Iron easily catches rust which is not good for long term usages.
PLZ HELP ME A girl throws a ball and her dog chases it. What characteristic of living things is this dog demonstrating as it chases the ball?
A. Cells
B. Reproduction
C. Growth
D. Response
Answers
If the following redox reaction occurred, which compound would be oxidized? Reduced?
Answers
In the following redox reaction, Fe (Iron) is being oxidized, while Cl₂ (Chlorine Gas) is being reduced. Oxidation is defined as the loss of electrons, while reduction is the gain of electrons.
Here, correct answer will be
In this reaction, the Fe is losing two electrons to the Cl₂, which is gaining two electrons. Therefore, the Fe is being oxidized, while the Cl₂ is being reduced.
It is important to note that the oxidation state of a compound can change without the compound itself changing. In this reaction, the oxidation states of the two compounds are changing, even though the compounds themselves are not.
The oxidation state of the Fe is increasing from 0 to +2, while the oxidation state of the Cl₂ is decreasing from 0 to -2. This is what makes this reaction a redox reaction.
Know more about Oxidation here
https://brainly.com/question/9496279#
#SPJ11
complete question is :-
If the following redox reaction occurred, which compound would be oxidized and Reduced?
2FeCl₃(s) → 2Fe(s) + 3Cl₂(g)
What statement describes an electrolyte?
Answers
17. What is the molarity of ZnCl2 that forms when 15 grams of Zn reacts completely with CuCl, if a
final volume of 175 mL is produced?
Zn + CuCl2 → ZnCl2 + Cu
Answers
Answer:
1.31M
Explanation:
Based on the reaction, 1 mole of Zn produce 1 mole of ZnCl₂. As the reaction occurs completely, the moles of Zn added = Moles of ZnCl₂ produced. To find molarity we need the moles of ZnCl₂ and the volume of the solution in liters:
Moles Zn = Moles ZnCl₂ -Molar mass Zn: 65.38g/mol-:
15g * (1mol / 65.38g) = 0.23 moles of ZnCl₂
Volume in Liters:
175mL * (1L / 1000mL) = 0.175L
The molarity is:
0.23moles / 0.175L
1.31MWhat volume of O2 at STP is required to oxidize 8.0 L of NO at STP to NO2? What volume of NO2 is produced at STP?
Answers
The balanced equation of the reaction is:
\(O_2 + 2 NO\) ⇒ \(2 NO_2\)
Every gas occupied 24 L in one mole in r.t.p. according to the equation:
\(24 \times n = V\)
8/24=0.333 mol
2 moles of NO makes 2 moles of \(NO_2\\\) so
0.333*24=8L
If a car traveling at 75 mph west, changes its direction to east, does its acceleration change?
yes or no (1pt)
and explain why you chose the answer
Answers
Answer:
No because it changes velocity, instead of accelerating
Explanation:
and yes, I am in K12 ツ
Answer:
no
Explanation:
it changes velocity, instead of accelerating
In the previous step, you determined
0.25 mol HCI reacts. The molar mass
of Mg is 24.31 g/mol.
What mass of Mg is required?
PLEASE HELP ASAP
Answers
Approximately 3.04 grams of magnesium would be required to react with 0.25 moles of hydrochloric acid.
To determine the mass of Mg required, we need to use the balanced chemical equation for the reaction between hydrochloric acid (HCl) and magnesium (Mg):
2HCl + Mg → MgCl2 + H2
From the balanced equation, we can see that 2 moles of HCl react with 1 mole of Mg. Therefore, if 0.25 mol of HCl reacts, we would need half of that amount, which is 0.125 mol of Mg.
To calculate the mass of Mg required, we need to multiply the number of moles of Mg by its molar mass. The molar mass of Mg is given as 24.31 g/mol. Therefore, the mass of Mg required can be calculated as follows:
Mass of Mg = Number of moles of Mg × Molar mass of Mg
Mass of Mg = 0.125 mol × 24.31 g/mol
Mass of Mg = 3.04 g
For such more questions on moles
https://brainly.com/question/19964502
#SPJ8
how much energy is needed to convert 120g of ice at -35°C to steam at 150°C?
Answers
In which phase of matter do the molecules that make up the substance have the greatest kinetic energy?
Liquid
O Plasma
O Gas
O Solid
Answers
I hope this helps
Answer:
Gas
Explanation:
This in turn determines whether the substance exists in the solid, liquid, or gaseous state. Molecules in the solid phase have the least amount of energy,
I got told if i got a lighter lit it and put it on my self that i should eat a cookie an watch :D should i do it :3
Answers
Which of the following solids is commonly used as an inactive electrode in electrochemical cells?
a. Zinc.
b. Graphite.
c. Copper.
d. Iron.
e. Sodium.
Answers
The solid commonly used as an inactive electrode in electrochemical cells is Graphite. So option b is the correct answer.
Graphite is often chosen as an electrode material because it is chemically inert, highly conductive, and has a stable structure. This makes it suitable for various electrochemical applications without affecting the overall cell reactions.
An inactive electrode, also known as an inert electrode, is an electrode that does not participate in the chemical reaction occurring in the cell but serves as a conductor for the flow of electrons.
The graphite working electrode, which can be employed as an anode or a cathode in various electrochemical applications, is renowned for its chemical stability, superior electrical conductivity, and high melting point.
So the correct answer is option b. Graphite.
To know more about electrodes: https://brainly.com/question/25749323
#SPJ11
1.1 L of nitrogen dioxide were produced in the reaction seen below. How
many liters of oxygen gas were used if the reaction occurred at STP?*
2N0 + 02 --> 2NOZ
O 22.4L
O 2.2L
O 0.55L
O 17.6L
Answers
How many formula units are in 2.0 moles of Fe(NO3)2?
Answers
Answer:
1.2 x 10>24 (2.0)(6.022 x 10>23)
Explanation:
How many formula units are in 2.0 moles of Fe(NO3)2?
Mole measure the number of elementary entities of a given substance that are present in a given sample. 12.044×10²³ formula units are in 2 moles of Fe(NO₃)₂.
What is mole?The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity or amount of substance. We know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number. Mole is inversely proportional to molar mass.
Mathematically,
Mole of Fe(NO₃)₂. =given number of atoms of Fe(NO₃)₂.÷ 6.022×10²³(Avogadro number)
mole of Fe(NO₃)₂= 2moles
Substituting the values
2=number of atoms of Fe(NO₃)₂.÷ 6.022×10²³
Number of atoms of Fe(NO₃)₂.=2×6.022×10²³
Number of atoms of Fe(NO₃)₂.=12.044×10²³
Therefore, 12.044×10²³ formula units are in 2 moles of Fe(NO₃)₂.
To know more about mole, here:
https://brainly.com/question/15209553
#SPJ3
A di-atomic ideal gas begins at a volume of 1.91 m
3
, a pressure of 105kPa and a temperature of 21
∘
C. It undergoes a constant volume process that triples its temperature. The change in entropy of the gas is J/K. GIVE ANSWER to 4 sig figs and don't type in units
Answers
The change in entropy of the gas is 27.6 J/K.
Entropy of a gas:
Entropy of a gas is the measure of the disorder or randomness of the particles in a system. The second law of thermodynamics states that in an isolated system, the total entropy will always increase over time, indicating that the disorder of a system will always increase if it is left alone.
A diatomic ideal gas begins at a volume of 1.91 m3, a pressure of 105 kPa and a temperature of 21oC. It undergoes a constant volume process that triples its temperature. The change in entropy of the gas is J/K.
The relationship between entropy and temperature is given by:
\($$\Delta S = nC_{v}ln\frac{T_{2}}{T_{1}}$$\)
Where , ΔS is the change in entropy of the gas,
n is the number of moles of the gas,
Cv is the heat capacity at constant volume,
T2 is the final temperature of the gas and
T1 is the initial temperature of the gas.
Since the gas is diatomic, its heat capacity is given by:
Cv = 5/2R where R is the ideal gas constant.
Therefore, the change in entropy of the gas is:
\($$\Delta S = nC_{v}ln\frac{T_{2}}{T_{1}}$$\)
\($$\Delta S = n(\frac{5}{2}R)ln\frac{T_{2}}{T_{1}}$$\)
\($$\Delta S = (\frac{5}{2})(8.31)ln\frac{3T_{1}}{T_{1}+273}$$\)
At a temperature of 21oC, the initial temperature of the gas is:T1 = 21 + 273 = 294 K.
Substituting T1 into the equation gives:
\($$\Delta S = (\frac{5}{2})(8.31)ln\frac{3(294)}{294+273}$$\)
\($$\Delta S = 27.6 J/K$$.\)
Learn more about Entropy of a gas from the given link:
https://brainly.com/question/31711830
#SPJ11
an aqueous solution is prepared by dissolving 100 mg/l of cacl2 and 230 mg/l of na2so4 in water. assuming that these salts dissociate completely, and that the dissociated ions do not undergo any additional reactions, calculate 73 (a) the molar concentration of each ionic species; (b) the ionic strength of the solution; (c) the activity coefficient for each species (with the davies equation); (d) the activity of each species
Answers
In the aqueous solution given,
a) The molar concentration of CaCl2 is 1.6197 mol/L.
b)The ionic strength of the solution is 6.0996 mol/L.
c) The activity coefficient for each species is exp(−A([Ionic Strength]1/2)).
d)The activity of each species is γ * Molar Concentration.
(a) The molar concentration of CaCl2 can be calculated as follows: 100 mg/l / (molar mass of CaCl2 = 111.0 g/mol) = 0.9001 mol/L.
The molar concentration of Na2SO4 can be calculated as follows: 230 mg/l / (molar mass of Na2SO4 = 142.0 g/mol) = 1.6197 mol/L.
(b) The ionic strength of the solution can be calculated using the formula: I = [Ca2+] + 2[Cl-] + [Na+] + 2[SO42-]. Therefore, the ionic strength of the solution = 0.9001 + 2(0.9001) + 1.6197 + 2(1.6197) = 6.0996 mol/L.
(c) The activity coefficient for each species can be calculated using the Davies equation: log γ = −A([Ionic Strength]1/2). Therefore, the activity coefficient for each species = exp(−A([Ionic Strength]1/2)).
(d) The activity of each species can be calculated using the formula: Activity = γ * Molar Concentration. Therefore, the activity of each species = γ * Molar Concentration.
In summary, the molar concentrations of CaCl2 and Na2SO4 in the solution are 0.9001 mol/L and 1.6197 mol/L, respectively.
The ionic strength of the solution is 6.0996 mol/L, and the activity coefficients and activities for each species can be calculated using the Davies equation and the formula, respectively.
to know more about molar concentration refer here:
https://brainly.com/question/21841645#
#SPJ11
What does it mean to classify?
1.to put books in alphabetical order
2.to separate objects or ideas into groups based on ways they are alike
3.to separate stamps by year and then by color
4.to organize music by category and then by title
Answers
Answer:
2
Explanation:
to separate objects or ideas into group based on ways they are alike
which one of the following would form a precipitate with poâ³⻠ions in aqueous solution?A. K+B. NHâ+C. Ca2+D. None of these would form a precipitate
Answers
We have established that the reaction among Pb(NO3)2 aquatic and MgSO4 aqueous in answer option (A) is the only scenario which is something a deposit is likely to develop.
Why did MgSO4 get used?Copper sulfate is a medication used to treat and prevent seizures and low blood magnesium levels in eclamptic women. Additionally, it is used to treat barium poisoning, acute asthma exacerbations, torsades de pointes, and constipation.
What medication is MgSO4?The most popular medication for treating eclampsia and preventing it in people with severe which was before is magnesium sulfate (MgSO4). Generally, it is administered intravenously and otherwise intramuscularly.
To know more about MgSO4 visit:
https://brainly.com/question/8691104
#SPJ4
Select the correct answer. Sami was blowing soap bubbles in his room where the temperature was 23 °C and the pressure was constant. He blew a soup bubble of volume 45 mL. The bubble suddenly escaped from the window where the temperature outside was 12 °C. Explain what will happen to the soap bubble? The volume of the soap bubble will increase to 46.73 mL. The volume of the soap bubble will increase to 86.25 mL. The volume of the soap bubble will decrease to 23.47 mL. The volume of the soap bubble will decrease to 43.33 mL.
Answers
Answer:Question
Select the correct answer. Sami was blowing soap bubbles in his room where the temperature was 23 °C and the pressure was constant. He blew a soup bubble of volume 45 mL. The bubble suddenly escaped from the window where the temperature outside was 12 °C. Explain what will happen to the soap bubble? The volume of the soap bubble will increase to 46.73 mL. The volume of the soap bubble will increase to 86.25 mL. The volume of the soap bubble will decrease to 23.47 mL. The volume of the soap bubble will decrease to 43.33 mL.
Explanation:
Question
Select the correct answer. Sami was blowing soap bubbles in his room where the temperature was 23 °C and the pressure was constant. He blew a soup bubble of volume 45 mL. The bubble suddenly escaped from the window where the temperature outside was 12 °C. Explain what will happen to the soap bubble? The volume of the soap bubble will increase to 46.73 mL. The volume of the soap bubble will increase to 86.25 mL. The volume of the soap bubble will decrease to 23.47 mL. The volume of the soap bubble will decrease to 43.33 mL.
The following reaction represents what nuclear process?
214 82 Pb → 0 -1e + 214 83 Bi
a. alpha emission
b. gamma emission
c. electron capture
d. neutron bombardment
e. beta emission
Answers
The given reaction represents a nuclear process known as beta emission (Option E).
In this reaction, 214 82 Pb (lead-214) decays into 214 83 Bi (bismuth-214) while emitting a 0 -1e (beta particle, or electron). Beta emission occurs when a neutron within an unstable nucleus is converted into a proton, resulting in an electron being emitted.
This transformation increases the atomic number (Z) by 1 while keeping the mass number (A) constant. Beta emission helps the nucleus achieve a more stable state by altering the ratio of protons to neutrons. In the provided reaction, lead-214 transforms into bismuth-214, with the atomic number increasing from 82 to 83. This demonstrates that a neutron has been converted into a proton, and an electron (beta particle) has been emitted in the process. Therefore, the correct answer is e. beta emission.
Learn more about Beta emission here: https://brainly.com/question/30923859
#SPJ11