F is the most electronegative atom on the Periodic Table, and electronegativities rise from the bottom to the top of the Group.
Did you notice if hexane or water was more soluble in the halogens?In comparison to water, the halogens are substantially more soluble in organic solvents like hexane. Since neither hexane nor the halogens are polar, van der Waals dispersion forces are the only intermolecular interactions acting between them.
The capacity of an atom to attract electrons to itself is known as electronegativity. Halogens have a strong attraction to electrons and hence have high electronegativity values because they only require one electron to complete an octet.
Although polar by nature, alkyl halides are very insoluble in water.
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What are the 10 organisms?.
Producers, eaters, herbivore, carnivore, omnivores, scavengers, parasite, predators, and decomposers are only a few of the various sorts of creatures.
In biology, what is an organism?An organism is a collection of molecules working to together form a mostly stable whole that demonstrates the characteristics of life. With phrases like "any sense of life, such as with a plant, animal, fungus, or bacterial, capable of growth & reproduction," dictionary definitions are very general.
What types of organisms are examples?A living creature with a organized approach, is capable of responding to stimuli, can reproduce, develop, adapt, and preserve homeostasis is referred to as an organism. Therefore, every animal, plant, fungi, protist, microbe, or archaeon found on Earth would be considered a life.
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science subject.(please help me giving out points) A scientist wants to determine how a solvent’s properties affect its ability to dissolve a solute. The scientist decides to perform an experiment to see if the temperature of water impacts its ability to dissolve salt. The diagram below shows the experimental setup.
can someone help me find the independent, and dependent variable. I need a constant,a hypothesis,and an experimental question that was in the question and try and find a procedure for this.(giving max 100 points).
Based on the data provided:
Independent variable - temperatureDependent variable -solubility of a soluteConstant variable - solvent (water), water volume, etc.Hypothesis - the temperature of water affects the ability of salt to dissolve.Research question: Does the temperature of water affects the ability of salt to dissolve?Procedure - Dissolve the salt in water at various temperatures ad determine the maximum amount of salt that dissolves at each temperature.What are the variables in an experiment?The variables in an experiment are those factors or quantities that can be changed or controlled by the researcher while conducting the research.
There are three types of variables in an experiment:
Independent variable - this is the variable that does not depend on any other variable but which when changed by the researcher brings about changes in another variable known as the dependent variable.Dependent variable - this is the variable that changes when another variable known as the independent variable changes. The dependent variable is usually the variable that is being tested. Hence, it is also called the test variableConstant variable - this variable is kept constant and not altered.An experiment usually states a hypothesis that is tested.
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What are the essential benefits of the Affordable Care Act?.
The essential health benefits of the Affordable Care Act include preventive care, emergency services, hospitalization, prescription drugs, mental health services, and pregnancy care.
The Affordable Care Act does what?For households earning below 100% - 400% of both the federal poverty threshold, the law offers customers subsidies (referred to as "premium tax credits") that reduce prices (FPL). Increase Medicaid coverage to include all adults with incomes below 138% of the federal poverty level.
The Affordable Healthcare Act covers who?Obamacare allows people to purchase health insurance regardless of their financial level. You may be eligible for a prescription tax credit or other special discounts that will lower the cost of your health insurance if your family income between 100% or 400percent of total of both the federal poverty threshold (FPL).
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which of these enters the citric acid cycle? which of these enters the citric acid cycle? g3p pyruvate glucose nadh h acetyl coa
The correct answer is option B.
The substrate that enters the citric acid cycle is called pyruvate.
What is citric acid cycle?
In Biology, Citric acid cycle is a series of multiple chemical reactions and is also called Krebs Cycle.
Generally, the cycle consists of eight exclusive steps including hydration, dehydration, redox, and decarboxylation reaction.
When cycle completes one turn one molecule of GTP or ATP is formed along with three molecules of NADH and 1 molecule of FADH2. Later on, these molecules are used in cellular respiration process.
To put it simply, citric acid cycle is a chemical reaction in which acetyl CoA is oxidized to release energy.
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A scientist decides to perform an experiment to determine the amount of time it would take to melt ice compared to the amount of time it would take for water to boil. What are the independent and dependent variables?
The dependent variable in the experiment is the ice and water.
The independent variable is amount of water or ice added.
What is a dependent variable?The dependent variable in any experiment is the variable that is being measured or tested in an experiment.
An experiment can be described as a procedure carried out under controlled conditions in order to discover an unknown effect or law, to test or establish a hypothesis, or to illustrate a known law.
An independent variable in an experiment is described as a variable that stands alone and is not changed by the other variables you are trying to measure.
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the crude product can be purified by recrystallization. describe the key properties a solvent needs to be suitable for use in recrystallization.
The key properties a solvent which needs to be suitable for use in recrystallization is that recrystallization solvent not react with the solid sample which taken as a sample for the purification.
What is recrystallization?Impure crystals can be purified by recrystallization with the help of suitable
solvent. This process is basically depends on two facts one is that most of the compounds are more soluble in the hot solvents as compared to cold ones, and impurities must have solubilities different from those of the given desired compound.
Three key properties of a good recrystallization solvent are as listed below:
. The recrystallization solvent not react with the solid sample which taken as a sample for the purification.
. The solvent must be inexpensive, volatile, and non-inflammable.
. The solvent either dissolve the impurities or not at all. If in case solvent dissolves the impurities which is present in a solid sample, then the impurities acts like that it is not present in the crystal structure of the solid. If in case solvent does not dissolve the impurities in it but dissolve the desired solid, then the impurities is easily removed by filtration techniques.
Thus, we concluded that the key properties a solvent which needs to be suitable for use in recrystallization is that recrystallization solvent not react with the solid sample which taken as a sample for the purification.
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The bond typically observed when a metal bonds to a nonmetal is the _____ bond. The metal atom _____ one or more valence electrons while the nonmetal _____ electrons.
The bond typically observed when a metal bonds to a nonmetal is the ionic bond the metal atom loses one or more valence electrons while the nonmetal gain electrons
Covalent bond form between nonmetal and ionic bond form between metal and nonmetal and metallic bond form between metal and ionic bonding involves the transfer of electron from a metal to the non metal atom until the outer shell of their resultant atoms are similar to that of a noble gas and the metal lose the electron and form cation while the nonmetal accept the electron and form anion and cation and anion are charged species which are formed by losing and gaining electron respectively to attain the nearest noble gas configuration or stability and usually metal lose their valence electron to form cation while non metal accept electron and form anion
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Complete these sentences by selecting the correct answers from the drop-down menus. After one half-life, % of the atoms will change to a stable isotope and % will remain radioactive. After three half-lives, % of the atoms will change to a stable isotope and % will remain radioactive.
After one half life, 50% of the atoms will change to a stable isotope.
After one half life, 50% of the atoms will remain radioactive.
After three half lives, 87.5% of the atoms will change to stable isotope.
After three half lives, 12.5% of the atoms will remain radioactive.
When the initial value of any compound is 100%, after one - half it will reduce to 50%, after the second half -life, it will reduce to 25%, after third half it will reduce to 12.5%.
Half- life may be described as the time required for the radioactivity of a specified isotope to drop to half its initial value.
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write balanced net ionic equations for the reactions that occur in each of the following cases. identify the spectator ion or ions in each reaction (b) ba1no3221aq2 k2so41aq2
The net ionic equation for the reactions that occur :-
[tex]SO {4}^{2-} (aq.) + Ba^{2+} (aq.) ----- > BaSO{4} (s)[/tex]
The spectator ions are:[tex]K^{+} \\and \\NO_{3}^{-}[/tex]
Net Ionic Equation:- An equation that only shows the ions or molecules that are actively contributing to the reaction or those that change is called net ionic equation.
Spectator ions:- Spectator ions may be either cations (positively-charged ions) or anions (negatively-charged ions). The ion is unchanged on both sides of a chemical equation and does not affect equilibrium. When writing a net ionic equation, spectator ions found in the original equation are ignored. Thus, the total ionic reaction is different from the net chemical reaction.
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a 9.148 mol sample of nitrogen gas is maintained in a 0.8008 l container at 303.6 k. what is the pressure in atm calculated using the van der waals' equation for gas under these conditions?
9.148 mol sample of nitrogen gas is maintained in a 0.8008 l container at 303.6 k. the pressure in atm is 330 atm.
The van der waal's equation is given as :
( P + ( an² / V² )) ( V - nb ) = RT
P = ( nRT / (V - nb )) - ( an² / V² )
n = 9.418
V = 0.8008 L
T = 303.6 K
a = 1.39 L² mol⁻² atm
b = 3.91 × 10⁻² L mol⁻¹ atm⁻¹
R = 0.821 L atm K⁻¹ mol⁻¹
P = ( 9.418 ×0.821 × 303.6 / ( 0.8008 - 9.148 × 3.91 × 10⁻² ) - ( 1.39 ×
(9.148)²/(0.8008)²
P = 330 atm
Thus, 9.148 mol sample of nitrogen gas is maintained in a 0.8008 l container at 303.6 k. the pressure in atm is 330 atm.
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Stars like the sun emit energy from nuclear fusion which combines small nuclei of hydrogen into larger nuclei of helium. All matter in the universe is created from stars. Which of these creates heavier elements like copper and zinc?.
The kind of stars that creates heavier elements such as copper and zinc is the first-generation stars. More specifically, the explosions (supernovae) that these stars underwent.
The first-generation stars were the stars that were formed after the Big Bang happened. These stars consisted mainly of hydrogen and helium. When these stars exploded in supernovae, that explosion creates some heavier elements that exist in the universe, such as copper and zinc.
The stars that came after the first generation, the second-generation stars like our Sun, contain these heavy elements. Since these elements can't exist purely from the nuclear fusion inside stars, they must have come from the supernovas.
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write a 2-page plan on what would you do to secure your database project. be sure to consider the following: potential security risks recommended security protocols
Database security refers to all the precautions businesses take to guard against hacks into their database management system (DBMS) and every piece of associated software. This involves implementing policies, practices, and tools designed specifically to safeguard the stored sensitive data. Small businesses that manage and collect huge amounts of data should also have database security standards in place because this problem is not just a problem for big businesses.
The finest database security practices listed below can help keep your databases secure from intruders.
1. Separate Web and Database ServersIn the conventional sense, this entails securing, locking, and providing access controls for your database server to keep away unauthorized visitors. It also entails maintaining the database on a distinct physical system from those used to operate web servers or applications.
2. Use firewalls for web applications and databases.A firewall should be used to safeguard your database server against threats to database security because it by default blocks traffic. Only traffic from certain applications or web servers that require access to the data should be permitted. The firewall ought to prevent your database from opening outbound connections unless absolutely necessary.
3. User Access to a Secure DatabaseThe database should only be accessible by the fewest individuals feasible. Administrators should only be granted access when they need it and only for as long as they need it to do their duties. Although this may not be feasible for smaller businesses, at the very least permissions should be handled through the use of groups or roles rather than being directly granted.
4. Update Your Operating System And Patches FrequentlyTo safeguard against the most recent vulnerabilities, it's crucial to routinely upgrade your operating system and database software with all security patches installed. Unless there is a compelling reason for any to be disabled, you should also make sure that any database security controls offered by the database are enabled (most are by default).
5. Auditing and tracking database activityThis entails keeping an eye on logins (and login attempts) to the database and operating system as well as routinely checking logs to look for unusual activity. To inform the appropriate team members when potentially dangerous activity is found, you may also generate alerts.
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Select the best answer for the question
6. The primary source of sound is vibration. This vibration has to travel through a medium, whether it's a gas, liquid, or solid. A sound wave with a higher energy will
have what kind of intensity in relation to a sound wave of a lower energy?
A.The sound wave with higher energy will have lower intensity
B.The sound wave with lower energy will have higher intensity
C. The intensity of a sound wave has nothing to do with the original energy
D. The sound wave with higher energy will have more intensity
Answer: the answer would be C
Explanation:
I took the test
what is the atomic radius in picometers of an argon atom if solid argon has a density of 1.623 g/cm3 and crystallizes at low temperature in face-centered cubic unit cell?
Atomic radius of an argon atom in FCC unit cell is 185 picometer.
Density of argon = 1.83 g/[tex]cm^{3}[/tex] and atomic mass of Argon = 40
density (d) = [tex]\frac{n . M}{a3 . Na}[/tex]
where d= density , n= no. of atoms present M = atomic mass , a3 = volume, Na = Avogadro's constant
a3 = [tex]\frac{n . M}{d . Na}[/tex]
a3 = 4 x 40 / 1.83 x 6.023 x [tex]10^{23}[/tex]
= 14.51 x [tex]10^{-23}[/tex]
=145.1 x [tex]10^{-24}[/tex] = a3
a = 5.25 x [tex]10^{-8}[/tex] cm
a= 0.525 x [tex]10^{-7}[/tex] nm
For FCC unit cell [tex]\sqrt{2a}[/tex] = 4r
r =[tex]\sqrt{2a}[/tex] / 4
= 1.41 x 0.525 / 4
= 0.185 nm
= 185 picometer
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How does a carbon atom in carbon dioxide become a hydrocarbon and organic compound before becoming carbon dioxide again?
Plants use sunlight and cellular respiration to transform carbon dioxide into the hydrocarbon molecule glucose, which is then ingested by the plants.
How does photosynthesis work?During photosynthesis, oxygen and glucose are created from water and carbon dioxide; the plant uses the glucose and produces oxygen as a waste product.
In the process of cellular respiration, oxygen & glucose are transformed into carbon dioxide and water. Carbon dioxide, water, & ATP, which would be converted into energy, are the process' byproducts.
What makes photosynthesis so crucial?The main purpose of photosynthetic is to transform chemical energy into solar energy, which is then stored for future use. This mechanism primarily provides energy to the planet's life systems.
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fourier transform techniques using an interferometer have not been used in uv-vis spectroscopy because
Fourier Transform techniques using an interferometer not used in UV-Vis spectroscopy because UV-Vis spectral regions require high level of stability.
The purpose of interferometer is to divide a single light beam into two separate ones so that the two beams follow different directions. But the atmosphere can cause vibrations in FT spectrometers, which can be bulky. These drawbacks prevent them from being effectively used in the UV-VIS spectral regions, which demand a high level of stability. While a broadband infrared source's wavelength is modulated by the FTIR spectrometer using an interferometer. Hence a detector determines how much light is transmitted or reflected in relation to its wavelength.
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In one to two sentences, identify and describe the processes that must happen for sand to eventually become metamorphic rock
PLEASE HELP ILL GIVE BRAINLIEST
Process that involves in converting soil into metamorphic rocks is generally by heating.
Metamorphic rocks are formed when the general rocks are subjected to high heat, mineral rich fluid, high pressure etc. Some examples of metamorphic rocks are gneiss, slate, marble, schist, and quartzite. Slate and quartzite tiles are used in building construction
Process of formation of metamorphic rocks is not by melting the rocks, but instead make them into more denser forms. For which these rocks are subjected to very high temperature and pressure to make them more dense.
Metamorphic rocks are often squished, smeared out, and folded. Despite these uncomfortable conditions, metamorphic rocks do not get hot enough to melt, or they would become igneous rocks!
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if you eat metallic sodium or inhale chlorine gas, you stand a strong chance of dying. let these two elements react with each other, however, and you can safely sprinkle the compound on your popcorn for better taste. what is going on?
Answer: Sodium Chloride has nothing in common with sodium or chlorine
Explanation:
I hope this helped ;)
How do you explain counting in tens?.
Counting via way of means of Tens with numbers method 10, 20, 30, 40, 50, 60, 70, 80, ninety and so on.
Ask them to circle all of the tens, 10, 20, 30 . . . Ask the youngsters to have a take a observe the numbers they've rotated and notice down some thing they notice. For example, all of them result in zero, the tens pass up in ones. Ask the youngsters to remember out loud in tens, from 10 to 100.22.
When we remember via way of means of tens the price that we're growing various is via way of means of a unit of ten. That's why the tens column seems like it's far growing via way of means of one wide variety whenever while without a doubt it's far growing via way of means of one unit of ten.
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Suppose a meteor is heading towards the earth at a straight line distance of 409km, y is coming at a speed of 2km/s if the meteor continues at this speed and all the way, how long would it take to reach planet Earth?
Hello..!
The time the meteor will take to reach Earth will be approximately 3.4 minutes.
Journey duration
The duration time is given by the ratio between the distance traveled and the speed of displacement of the object, that is:
[tex]\begin{gathered}\large\begin{array}{lr}\bf \red T = \dfrac{ \blue{d}}{ \blue{v}} \end{array}\normalsize\begin{cases}\bf{ \red{T}}\Rightarrow \textsf{ \green{Time }}\\\textbf{\red{d}}\Rightarrow \sf \green{Distance}\\\textbf{\red{v}}\Rightarrow \textsf{ \green{Speed}}\end{cases}\end{gathered}[/tex]
In the case of this problem, the time found will be in seconds, since the displacement speed is defined in km/s.
Applying the information in the formula:
[tex]\sf\red{D} \orange{\longmapsto} \blue{409km}[/tex]
[tex]\sf \red{V} \orange {\longmapsto} \blue{ 2km/s}[/tex]
[tex]\begin{gathered}\begin{array}{l}\bf T=\dfrac{409km}{2km/s}\\\\\large\boxed{\bf T = 204.5~seconds}\\\\ \large\text{$\bf ou$}\\\\\bf T = 204.5 \div 60\\\large\boxed{\bf T \approx 3{,}4~minutes}\end{array} \end{gathered}[/tex]
Thus, the impact will be in 204.5 seconds or 3.4 minutes, approximately
[tex]\begin{gathered}\rule{7cm}{0.01mm}\\\texttt{Good studies! :D}\\\rule{7cm}{0.01mm}\end{gathered}[/tex]
The solubility product constant of li3po4 is 3. 2 × 10-9. What is the molar solubility of li3po4 in water?.
The molecular solubility of li3po4 in water is 7.52*10^−3 M.
Here, we have been told that the solubility product constant of li3po4 is = 3.2*10^-9 (i)
We know that the molecular stability of an ionic compound is defined as the concentration of the compound dissolved in the solution. We can calculate the molecular stability of the given ionic compound li3po4 by using the solubility product given.
= {Li] = {PO} = S
= 3.2*10^-9 = S^3-S
= S^4= 3.2*10^9
= S = 7.52*10^−3 M.
Therefore, the molecular stability of the given ionic compound li3po4 is 7.52*10^−3 M.
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How much heat is needed to raise 35 grams of gold from 25.0°C to 35.0°C? (The specific heat of gold is 0.13 J/g°C.)
45.2 J
-55.2 J
54.2 J
25.2 J
Answer:
45.5J
Explanation:
ΔT=10°C
specific heat=0.13J/g°C
mass Au=35g
heat=35g•0.13J/g°C•10°C
heat=45.5J=46J
NOTE:I apply significant figures here for the accuracy of the solution.
please rate it,Thanks.
Select the statement that correctly explains the source of the energy change in a chemical reaction.
The source of the strength exchange in a chemical response: the primary contribution to ΔH is the difference inside the bond energies of reactants and merchandise.
A chemical reaction is a procedure that leads to the chemical transformation of 1 set of chemical materials to another. A chemical reaction is a technique wherein reactants react chemically and convert into products by using chemical transformation. as an instance, in the respiratory – we inhale oxygen which reacts with glucose and produces carbon dioxide, water, and electricity.
A chemical reaction is a method wherein one or more substances, the reactants, are converted to at least one or more exclusive materials, the goods. substances are both chemical elements or compounds. Chemical reactions permit dwelling matter (cells, animals, people, insects) to grow, increase, reproduce, and adapt.
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What could happen if they are tumbled rapidly? What could happen if they are tumbled rapidly?
If they are tumbled quickly, they might stick together because the static charge produced is now strong enough to do so, but it might not be close enough.
What creates static electricity?When dipoles are not in equilibrium, static electricity is produced. While electrons want to hop all over the place, the neutrons and protons don't move around too much. An item (or person) has a negative charge when it possesses excess electrons.
What is referred to as static electricity?Negative and positive charges inside an object must balance out for there to be no static electricity. Until they discover a method to be freed or discharged, these charges may accumulate on an object's surface. Through a circuit is one approach to discharge them.
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which image shows a liquid that would require more thermal energy to change to a gas?
The liquid shown in 'b' need more thermal energy to change to a gas.
What is Thermal energy?Thermal energy is defined as internal energy which is present in a system in state of the thermodynamic equilibrium depending on its temperature. Thermal energy can not be converted into useful work as much easily as the system energy which are not in states of the thermodynamic equilibrium.
As we can see that at same temperature in image 'a' the particle have high kinetic energy than the molecules of image 'b'. This can be shown that the boiling point of image 'a' is lower than the image 'b'. Therefore, at lower temperature it boils faster than the liquid 'b'. Thus we can say that liquid 'a' has less thermal energy than 'b'.
Thus, we concluded that the liquid shown in 'b' need more thermal energy to change to a gas.
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The main lipids found in cell membranes are called?
A. Waxes
B. Steroids
C. Phospholipids
The main lipids found in cell membranes are called Phospholipids.
Explanation:The most abundant membrane lipids are the phospholipids. These have a polar head group and two hydrophobic hydrocarbon tails. The tails are usually fatty acids, and they can differ in length (they normally contain between 14 and 24 carbon atoms).
A 40. 0 ml sample of 0. 25 m koh is added to 60. 0 ml of 0. 15 m ba(oh)2. What is the molar concentration of oh-(aq) in the resulting solution? (assume that the volumes are additive. ).
The molar concentration of OH⁻ (aq) in the resulting solution is 0.28 M.
What is molar concentration?Molarity is a measure of the concentration of a chemical species, especially a solute, in solution and is expressed as the amount of substance per unit volume of solution. The most commonly used unit of molarity in chemistry is moles per liter using the SI unit symbols mol/L or mol/dm³.
For the given question:
Initial concentration of KOH = M₁ (0.25 M)
Initial volume of KOH = V₁ (40.0 ml or 0.04 L)
Initial concentration of KOH = M₂
Final volume of solution = V₂ (40.0 + 60.0 = 100ml or 0.1 L)
Since, M₁V₁ = M₂V₂
0.25 × 0.04 = 0.1 M₂
M₂ = 0.1 M
Final molar concentration of KOH is 0.1 M
KOH ⇄ K⁺ + OH⁻
As the moles of K⁺ and OH⁻ on dissociation is same as KOH, so the concentration of OH⁻ will be 0.1 M as well.
Now final concentration of Ba(OH)₂
M₁V₁ = M₂V₂
0.15 × 0.06 = 0.1 M₂
M₂ = 0.09 M
Final molar concentration of Ba(OH)₂ is 0.09 M
Ba(OH)₂ ⇄ Ba⁺ + 2OH⁻
As the above reaction indicates moles of OH⁻ are twice as that of Ba(OH)₂. So, the molar concentration of OH⁻ will be twice the concentration of Ba(OH)₂, i.e. 2 × 0.09 = 0.18
Now the total molar concentration of OH⁻ will be:
= 0.1 + 0.18
= 0.28 M
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If nitrogen and hydrogen combine in a combustion reaction, what would the product of the reaction be? ch4 2o2 → 2 2h2o
When nitrogen gas and hydrogen gas combine, there is the formation of ammonia as a product.
A reaction that produces fire and occurs at a high temperature is referred to as a combustion reaction. An exothermic, redox reaction known as combustion typically takes place between a fuel and primarily oxygen in the environment.
Because this reaction cannot take place in the absence of oxygen, oxygen is the primary reactant in combustion reactions. When a fuel burns through completely, carbon dioxide and heat are produced.
Ammonia was created using the Haber process, which involved the reaction of nitrogen (N2) and hydrogen (H2) to create ammonia (NH3).
N₂ + 3H₂ ⇄ 2NH₃, ΔrH = -92kJ/mol.
Since the enthalpy change for the reaction that produces ammonia is negative, which indicates that energy is released during this process, ammonia formation is also an exothermic process.
Three moles of hydrogen gas and one mole of nitrogen gas combine to make one mole of ammonia.
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hat is the temperature of the filament, in degrees celcius (degc), when the bulb is on? the filament is made of tungsten.
The temperature of the filament, in degrees Celsius when the bulb is on the filament is made of tungsten is 2500 °C - 3000 °C.
The material used as filament is tungsten . the limit of working temperature of tungsten is 2500 °C - 3000 °C. The tungsten used as a filament in blub because it is an alloy. tungsten have high melting point. tungsten does not burn at room temperature because of high resistivity , it glows the bulb at high temperature.
Thus, The temperature of the filament, in degrees Celsius when the bulb is on the filament is made of tungsten is 2500 °C - The3000 °C.
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The half life of plutonium-239 (239pu, pu-239) is 24,100 years. How much plutonium will remain after 1000 years if the initial amount is 5 g?.
The mass of plutonium that will remain after 1000 years if the initial amount is 5 g when the half life of plutonium-239 (239pu, pu-239) is 24,100 years is 2.5 g
The equation is Mr=Mi(1/2)^n
where n is the number of half-lives
Mr is the mass remaining after n half lives
Mi is the initial mass of the sample
To find n, the number of half-lives, divide the total time 1000 by the time of the half-life(24,100)
n=1000/24100=0.0414
So Mr=5x(1/2)^1=2.5 g
The mass remaining is 2.5 g
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