Chromium-48 decays. After 6 half-lives, what fraction of the original nuclei
would remain?

Answers

Answer 1

Answer:

The fraction of original nuclei remaining is 1.5625

Explanation:


Related Questions

In reality, energy conversion from burning fuel is never 100% efficient. Significant loss of energy due to heating occurs. If the generator were only 20% efficient (which is more realistic), how much energy in joules would be converted to electrical energy and how much would be lost to heat? (2 points)​

Answers

Answer:

Electrical energy = 130000000 J and Heat energy = 520000000 J

Explanation:

Multiply the amount of joules from the last question (650000000) by .20 and .80. (Which are the percentages)

The atomic masses of elements are generally not whole numbers. Explain why.​

Answers

Answer:

Because elements have isotopes.

Explanation:

So the atomic mass is the average of an element's isotopes.

Answer:

The atomic masses of most elements are not whole numbers, because they are a weighted average of the mass numbers of the different isotopes of that element, with respect to their abundances in nature.

Explanation:

If the density of a substance is 2.18 g/mL, how would you find the density given that the mass is 0.987 kg and the volume is 4.52 x 102 mL?

Answers

Answer:

Explanation:

Convert mass in gms .. 987 gms

Density = mass/ volume

= 987/4.52 x102

= 2.18 g/mL

During the Metric Olympics yesterday, Molly's long jump was 118.3 cm. Christy accidentally recorded her results in inches. She jumped 51.18 inches. Can you help... Who won the long jump? Christy won by about 30 cm Christy won by about 30 cm Molly won by about 25 cm Molly won by about 25 cm Christy won by about 12 cm Christy won by about 12 cm Molly won by about 10 cm

Answers

Answer: Christy won Molly by 12cm

Explanation:

Ist step

Molly's ;ong jump was 118.3cm

Christy long jump was 51.18inches

2nd Step

we change christy score to cm so we can compare

1 inch = 2.54cm.

therefore 51.18 inches = 51.18 x 2.54= 129.9972cm

Christy won molly by 129.9971cm-118.3cm=11.69 rounded to 12cm

Christy won Molly by 12cm

Scientists and nutritionists have long suspected that high-fructose corn syrup, used to

sweeten soft drinks, is one of the causes of childhood obesity. In a recent study, at the

University of Cincinnati, researchers found that mice that drank water with added

fructose ate less solid food, gained more weight, and put on 90% more body fat than

mice that drank only water. Scientists concluded that fructose may affect metabolism in

a way that favors fat storage.

What is the independent variable?

The mice that drank only water

The presence of fructose in their diet

The quantity of water provided

The weight gained by the mice

Answers

Answer:

The presence of fructose in their diet

Explanation:

The independent variable in an experiment is the type of variable which is changed at intervals in order to study if it has a direct effect on the dependent variable.

The dependent variable in the experiment is the amount of weight gained by the mice in each group and the control group is the mice who drank the water without the fructose added.

Why are biopharmaceuticals in high demand?

Answers

Answer:

the market is largely driven by the growing population, increasing burden of chronic disease, and rising inclination toward targeted therapy.

Explanation:

also, the huge demand of biopharmaceutical is facilitated by an accelerating focus in research and related investment.

Which of the following characteristics is shared by both primary and secondary consumers? I need it quick it please
A. Uses the Sun's radiant energy of produce food
B.The first step in an food chain diagram
C. Eats only plants to gain needed energy
D.Gains energy by eating other living things

Answers

Answer:

Gains energy by eating other living things

The statement 'gains energy by eating other living things' is a characteristic shared by both primary and secondary consumers (Option D).

Producers (e.g. algae and plants) are autotrophic organisms that generate their own food.

Primary consumers and secondary consumers are heterotrophs that need to eat other organisms to survive.

Primary consumers can be, for example, herbivores, whereas secondary consumers can be carnivores.

In conclusion, the statement 'gains energy by eating other living things' is a characteristic shared by both primary and secondary consumers (Option D).

Learn more in:

https://brainly.com/question/1810988

Calculate the heat that must be supplied to
a 532 , stainless steel vessel containing 375 g
of water to raise its temperature from 35 C
to the boiling point of water 100°C. Cs. =0.51 J/g. degrees C
Answer in units of J.

Answers

Q must be supplied = 119523.3~J

Further explanation  

The law of conservation of energy can be applied to heat changes, i.e. the heat received/absorbed is the same as the heat released  

Q in = Q out  

Heat can be calculated using the formula:  

Q = mc∆T  

Q = heat, J  

m = mass, g  

c = specific heat, joules / g ° C  

∆T = temperature difference, ° C / K  

So from the question :

Q to the system(Q supplied) = Q water + Q steel vessel(Q gained)

[tex]\tt Q~supplied=m.c\Delta T(water)+m.c\Delta T(vessel)\\\\Q~supplied=375\times 4.18\times (100-35)+532\times 0.51(100-35)\\\\Q~supplied=101887.5+17635.8=119523.3~J[/tex]

Help ASAP!!!! Plz!!!!!!!

Answers

The atomic number,protons and electrons are all the same! The neutrons you just add by 1 to the protons. The atomic mass is at the bottom. For example- for oxygen the atomic #,protons, and electrons would all be 8. The neutron would be 9 and the atomic mass is 15.999.

Surface water is found in oceans, lakes, reservoirs, streams, rivers,and glaciers. Lakes, rivers, and reservoirs are where humans obtain most of the surface water they use. Aquifers are an underground source of water that humans also use.

Answers

Freshwater on the land surface is a vital part of the water cycle for everyday human life. On the landscape, freshwater is stored in rivers, lakes, reservoirs, and creeks and streams. Most of the water people use everyday comes from these sources of water on the land surface.

Do you guys have viruses wit this website

Answers

With what website???

A 1.00-L flask is filled with 1.00 moles of H2 and 2.00 moles of I2. The value of the equilibrium constant for the reaction of hydrogen and iodine reacting to form hydrogen iodide is 50.5 under the given conditions. What are the equilibrium concentrations of H2 , I2 , and HI in moles/L? H2 (g) + I2 (g) ⇌ 2HI(g)

Answers

Answer:

[tex] C_{H_{2}} = 0.07 M [/tex]

[tex] C_{I_{2}} = 1.07 M [/tex]

[tex] C_{HI} = 1.86 M [/tex]

Explanation:

The reaction is:

H₂(g) + I₂(g) ⇄ 2HI(g)

Initially, we have the following concentrations of H₂ and I₂:

[tex] C_{H_{2}} = \frac{n}{V} = \frac{1 mol}{1.00 L} = 1 mol/L [/tex]

[tex] C_{I_{2}} = \frac{n}{V} = \frac{2 mol}{1.00 L} = 2 mol/L [/tex]

Then, in the equilibrium we have:

H₂(g) + I₂(g) ⇄ 2HI(g)

1-x       2-x         2x

[tex] Kc = \frac{[HI]^{2}}{[H_{2}][I_{2}]} = \frac{(2x)^{2}}{(1-x)(2-x)} [/tex]

[tex] 50.5*(1-x)(2-x) - (2x)^{2} = 0 [/tex]

By solving the above equation for x we have:

x₁ = 2.32 and x₂= 0.93

Hence, the concentrations of H₂, I₂ and HI are:

[tex] C_{H_{2}} = 1-x = 1 - 0.93 M = 0.07 M [/tex]

[tex] C_{I_{2}} = 2-x =  2 - 0.93 M = 1.07 M [/tex]

[tex] C_{HI} = 2*x = 2*0.93 M = 1.86 M [/tex]

I hope it helps you!    

Calculate the volume 3.00 moles of a gas will occupy at 24.0 °C and 762.4 mm Hg.

Answers

Answer:

Use formula of PV = nRT

Change formula to solve for Volume = nRT/P

R is a constant 0.08206

Convert C to Kelvin which is just +273

And turn mmHg into atm which is around 1 atm

Plug in and solve

Why Hund's Rule is called maximum spin multiplicity rule?​

Answers

Answer:

The rule states that for a given electron configuration, the lowest energy term is the one with the greatest value of spin multiplicity. This implies that if two or more orbitals of equal energy are available, electrons will occupy them singly before filling them in pair

Explanation:

What occurs to the particles in a fluid during convection ?

Answers

Answer: what are options

Explanation:

I WILL GIVE U BRAINLIST

Read this passage from "The Secret Life of Walter Mitty."

"Puppy biscuit," said Walter Mitty. He stopped walking and the buildings of Waterbury rose up out of the misty courtroom and surrounded him again.

A woman who was passing laughed. "He said ‘Puppy biscuit,’" she said to her companion. "That man said ‘Puppy biscuit’ to himself."


What does the dialogue in the excerpt show about Mitty?

He is awkward and absentminded.

He is responsible and conscientious.

He is funny and entertaining.

He is sour and nasty.

Answers

Answer:

He is awkward and absentminded.

Explanation:

"The Secret Life of Walter Mitty" by James Thurber presets the story of Walter with a dream. The beginning of the story reflects on the idea that the story is more inclined towards the dreams and fantasy-full world rater than reality. Walter's dreams are a mixture of reality and his imagination. He spoke certain words those do not have meaning in reality. He calls himself 'Puppy Biscuit" to which the women reacted with a laugh. This represented his absent-minded character and his appeal towards is dreams.

choose the letter that best describes the behavior of a substance during a phase change:

/A/ neither absorbs or releases energy

/B/ always absorbs energy

/C/ always releases energy

/D/ either absorbs or releases energy

Answers

Answer:

/D/ either absorbs or releases energy

Explanation:

During a phase change energy is either absorbed or released.

A phase change is a reversible process which occurs when a substance changes is its state from one form to another.

Phase changes are used to delineate physical changes.

A phase diagram provides a graphic representation of the change. The diagram can be 2 dimensional or 3 dimensional.

You are conducting an experiment with two very reactive substances. One will react with oxygen (O) and other substances in the air, and the other will react to metal in a container. What type of environment can you seal them in so they only react with each other?

Answers

Answer:

seal them in a glass container in an atmosphere of argon (Ar) gas

Explanation:

You have a solution of water and pure ethanol. The boiling point of water is 100 degrees Celsius and the boiling point of pure ethanol is 78 degrees Celsius. A. What process would you would use to separate this solution? Describe, in detail, how this process works.

Answers

Answer:

Distillation

Explanation:

A solution of water and ethanol are miscible. Hence, they can only be separated by a process known as distillation. Distillation is the process in which two or more constituents in a mixture are separated based on there difference in boiling points. The mixture is subjected to high heat and the one with the least boiling point distills/evaporates out first followed by the next least boiling point.

From the explanation above, it can be deduced that ethanol (with boiling point of 78°) will be distilled out while water remains in the boiling tube or container.

How many moles are in a sample of 2.39 x 10^23 atoms of sodium (Na)

Answers

Answer:

The answer is 0.4 moles

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

[tex]n = \frac{N}{L} \\ [/tex]

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

[tex]n = \frac{2.39 \times {10}^{23} }{6.02 \times {10}^{23} } \\ = 0.39700996...[/tex]

We have the final answer as

0.4 moles

Hope this helps you

Please help!!!

A piece of metal of mass 27 g at 93° C is placed
in a calorimeter containing 59.2 g of water at
21°C. The final temperature of the mixture is 34.9 ° C. What is the specific heat capacity of the metal? Assume that there is no energy lost to the surroundings.
Answer in units of J/g. ° C

Answers

Answer:

1.586 J/g°C

Explanation:

So, we have the formula [tex]q = mc\Delta t[/tex].

Since heat released by the metal is = to the heat absorbed by the water (because they eventually become the same temperature in solution), we can say

[tex]m_{water}C_{water}(T_{water}-T_f) = - m_{metal}C_{metal}(T_{metal} - T_f)[/tex]

Plugging in, we get:

[tex]59.2*4.184*(21- 34.9) = - 27*C_{metal}*(93 - 34.9)[/tex]

Solving, we get [tex]C_{metal} = 1.586[/tex] J/g°C.

What is the purpose of the title of a line graph

Answers

Answer:

It tells about the data for each line graph is plotted.

Explanation:

Answer:

It can describe what the line graph is measuring and how it is measuring it

ANSWER ASAP PLEASE!!

What determines how many of each ion is required for an ionic compounds?

please do not look up on google!!!!

Answers

Each ion has a single charge, one positive and one negative, so we need only one ion of each to balance the overall charge. When writing the ionic formula, we follow two additional conventions: (1) write the formula for the cation first and the formula for the anion next, but (2) do not write the charges on the ions.

medicine some chemical components (chemical formula)​

Answers

Answer:

A chemical formula is a way of presenting information about the chemical proportions of atoms that constitute a particular chemical compound or molecule, using chemical element symbols, numbers, and sometimes also other symbols, such as parentheses, dashes, brackets, commas and plus (+) and minus (−) signs.

Compounds used as medicines are most often organic compounds, which are often divided into the broad classes of small organic molecules (e.g., atorvastatin, fluticasone, clopidogrel) and "biologics" (infliximab, erythropoietin, insulin glargine), the latter of which are most often medicinal preparations of proteins

Explanation:

Volcanic belts form along
a.
islands in the Pacific Ocean.
b.
North American mountain ranges.
c.
the boundaries of Earth’s plates.
d.
the coast of Antarctica.


Please select the best answer from the choices provided

Answers

C. The boundaries of earths tectonic plates

Which takes longer to bake, chocolate chip cookies or oatmeal cookies? What
are the independent variables? *

Answers

Explanation: oatmeal cookies, and the independednt variable is the kind of cookie

Which refers to a method that relies on sound waves and is used by different animal species for navigation,
communication, and finding food?
echolocation
analog signaling
infrared detection
o digital location
HELP FAST ILL MARK BRAINLEST

Answers

Answer:

A

Explanation:

got it on edge

An echolocation refers to a method that relies on sound waves and is used by different animal species for navigation, communication, and finding food. Therefore, option A is correct.

What is an echolocation ?

Echolocation is a method used by bats, dolphins, and other animals to locate objects using reflected sound. This enables the animals to move around in complete darkness, allowing them to navigate, hunt, recognize friends and enemies, and avoid obstacles.

(1) To hunt for prey, bats make high-frequency sounds. (2) Sound waves are used by dolphins and other toothed whales to locate prey and navigate their surroundings. (3) Nocturnal oil birds use echolocation to navigate their surroundings, particularly in low-light conditions.

Echolocation is used to help with orientation, obstacle avoidance, food acquisition, and social interactions.

Thus, option A is correct.

To learn more about an echolocation, follow the link;

https://brainly.com/question/7828418

#SPJ6

If I have 12 protons, how many neutrons and electrons would I need to make a stable atom?

Answers

Answer:

im pretty sure you need 15 in all but dont get mad it thats wrong, so you would i think need 3 neutrons

Explanation:

In an atom, there are 12 electrons and protons while the number of neutrons is 6.

What is an atom?

An atom is defined as the smallest unit of matter which forms an element. Every form of matter whether solid,liquid , gas consists of atoms . Each atom has a nucleus which is composed of protons and neutrons and shells in which the electrons revolve.

The protons are positively charged and neutrons are neutral and hence the nucleus is positively charged. The electrons which revolve around the nucleus are negatively charged and hence the atom as a whole is neutral and stable due to presence of oppositely charged particles.

Atoms of the same element are similar as they have number of sub- atomic particles which on combination do not alter the chemical properties of the substances.

Learn more about atom,here:

https://brainly.com/question/13654549

#SPJ2

Help this is not that hard I think

Answers

Answer:

1,) True

2.) False

3.) A Moraine

Explanation:

Hope this helps

Please Mark As Brainliest

When exposed to very high temperatures, metals like iron can be turned into fluids that flow and can be poured into molds. What happens within the iron to allow it to flow?

A) The energy of the solid decreases, and the particles begin to collide with high frequency

B)The energy of the solid increases, and the particles begin to slide past each other

C)The solids collide at an increasing rate until reaching equilibrium energy

D)The particles vibrate about equilibrium in an effort to minimize energy

Answers

Answer: B) The energy of the solid increases, and the particles begin to slide past each other.

Explanation:

The energy of the solid matter is required to be increased so that molecules of the solid matter get separated from each other and an transition from solid matter to liquid matter occurs. The liquid components of the matter will slide past each other as they have obtain energy for fluidity. The liquid iron can be molded into any shape and the energy decreases considerably.

Other Questions
WILL GIVE YOU BRAINLIEST ANSWER Writing accurately does NOT require which of the following?A. Providing all relevant informationB. Writing specific and true informationC. Avoiding generalizationsD. Using complex words Find the slope of the line passing through the points (8,-4) and (-6,-3).Anybody know this ? Determine if each pair of ratios or rates are equivalent. Explain your reasoning: 48 words typed in 3 minutes || 75 words typed in 5 minutes what is the highlight of the cheung chau bun festival Calculate the heat that must be supplied toa 532 , stainless steel vessel containing 375 gof water to raise its temperature from 35 Cto the boiling point of water 100C. Cs. =0.51 J/g. degrees CAnswer in units of J. What occured during the battles of trenton and princeton? Find the surface area of a right cone with a diameter of 6 inches and a slant height of 5 inches. What type of space is often the main focal point of the composition in graphic design? Which sentence in the text uses a clear analogy a. the speed of light is the absolute limit for any object traveling through the universe b. however, there may be a way to teleport, like Houdini, from one part of the galaxy to another c. Warp travel would be a game changer, opening a vast new frontier for human beings d. In the same way one can fold a sheet of paper to bring to points together, scientist may one day find a way to warp space itself pwease help!! i need help to put the answers in the box c: 10.) choose the best answer to identify the part of speech if the boldface word. what to do if the patient stops breaching during Fainting ? Write an equation for the line that passes through the given point and is parallel to thegraph of the given equation. Write your final equation in slope-intercept form.2. 3x + 4y = 12; (-4,7) Question 4 of 10Repetition works by making new information:A. second nature.B. into prior knowledge.C. more musical.D. easy to visualize.SUBMI Yo, this is lit. Ngl, this is gonna help waht is sciencewjwissbsskdldmndndnd Hart Attorney at Law experienced the follwoing transactions in 2016, the first year of operations:1. Accepted $36,000 on 4/1/16, as a retainer for services to be performed evenly over the next 12 months. 2. Performed legal services for cash of $54,000. 3. Purchased $2,800 of office suppies on account. 4. Paid $2,400 of the amount due on accounts payable. 5. Paid a cahs dividend to the stockholders of $5,000. 6. Paid cash for operationg expenses of $31,000. 7. Determined that at the end of the accounting period $200 of office supplies remained on hand. 8. On 12/31/16, recognized the revenue that had been earned for services performed in accordance with Transaction 1Required:Show the effects of the events on the fianncial statements using a horizontal statement model. Help ASAP!What evidence can be offered to support this statement: Although it is not legal obligation, voting is the most important duty a citizen can carry out? is |-4| equal to |4|? Which two articles describe the relationship between the federal government and the States?Select the best answer to the question.A.Article i and Article IIIB.Article IV and Article VIa.Article V and Article VIID.The Preamble and Article II