Please help. A 208 g sample of sodium-24 decays. How much of this radioactive isotope will remain after 3 half
lifes?

Answers

Answer 1

Answer: The information about sequential order of the event occurred in the past can be obtained by using only relative dating method.

Explanation:

Relative dating method doesn’t give information about when it happened. It provides sequential order of the events. It is the art of deciding the overall happening of past occasions (i.e., the age of an item in contrast with another), without fundamentally deciding their outright age (for example evaluated age).

In topography, shake or shallow stores, fossils and lithologies can be utilized to correspond one stratigraphic segment with another.


Related Questions

Monica put four items on the desk that you need to measure the mass of. The items are listed below. Which of the following would need to be put in a container in order to measure the mass on a scale?
I. Flour
II. Sugar cubes
III. Milk
IV. An unbroken egg

A. I and III
B. I and IV
C. II and III
D. III and IV

Answers

Answer:

it D because it make more sense

Apply: Many gyms and health clubs have steam saunas, which are small steam-filled rooms. Traditionally, steam saunas have a container of heated rocks. A small ladle of water is poured on the rocks in order to make the steam.

1. Use what you have learned so far about heat transfer to explain how hot rocks can be used to make steam?

2. Why do you think only a small ladle-full of water is poured on the rocks at one time?

Answers

Answer:

the heat vaporization of water is very high with small amounts of water you can vaporize the water as it hits the rocks into steam. (i think)

Explanation:

List the 4 main components of air in their molecular form.

Answers

Answer:

Air is made up of 78.09% nitrogen, 20.95% oxygen, 0.93% argon, 0.04% carbon dioxide, and other gases in meager amounts.

Mention the type of
Reaction common
to organic compound-

Answers

Answer:

addition reactions, elimination reactions, substitution reactions, pericyclic reactions, rearrangement reactions, photochemical reactions and redox reactions

what does a large positive standard cell potential imply about the spontenty of the redox reaction occuring in teh cell

Answers

Answer : E cell standard is the potential difference between the two electrodes under standard conditions. Overall tendency for the redox reaction to occur spontaneously. A large positive E cell means the reaction is more spontaneous, and a negative E cell indicates a non spontaneous reaction.

Explanation: hope this answers your question

Based on properties of elements in the periodic table, which element is the best conductor of thermal energy?.

Answers

Answer:

Silver

Explanation:

Silver has the highest thermal conductivity of any element and the highest light reflectance.

The half-life of Palladium-100 is 4 days. After 16 days a sample of Palladium-100 has been reduced to a mass of 6 mg. What was the initial mass (in mg) of the sample

Answers

Answer:

96mg

Explanation:

Since the half-life of Palladium-100 is 4 days and the sample has been reduced after 16 days, that means the sample has undergone four half-lives. To find the intial mass, just work backwards:

6 x 2= 1212 x 2= 2424 x 2= 48 48 x 2= 96

As you see, I've worked backwards from the four half-lives. So the initial mass after 16 days is 96 mg.

how long does vacuum sealed raw meat last in the freezer?

Answers

Answer:

Frozen Meats – Frozen raw meats that are properly vacuum sealed can be stored in the freezer from 1-3 years depending on the type of meat. However, raw meat that is not vacuum sealed will only last 1-12 months depending on the meat.

Explanation:

hop this helps

Answer: Six months or three years

Explanation: Frozen meats, poultry, and fish can last in the freezer for up to six months and when they are vacuum sealed, frozen meats can stay fresh and free from freezer burn for up to 3 years.

Which class of macromolecule was described as being most like the hydrocarbons?.

Answers

Answer:

Fats........................

Lipids is the class of macromolecule was described as being most like the hydrocarbons.

what are Macromolecules ?

Macromolecules are bigger molecules of large size and made of smaller molecules called as monomers, Polymers are macromolecules.

All Macromolecules are not like the hydrocarbon because the macromolecules not only consists of  C and H atoms but also N and O.

Macromolecules are classified into 4 types

Proteins , Carbohydrates , Lipids and Nucleic Acids

Lipids is the class of macromolecule was described as being most like the hydrocarbons.

Lipids are a broad category of chemicals that are mostly nonpolar in nature.

This is due to the fact that they are hydrocarbons with nonpolar carbon–carbon or carbon–hydrogen bonds.

To know more about Macromolecules

https://brainly.com/question/15237842

#SPJ2

How could the student obtain zinc chloride solution from the reaction mixture when all the hydrochloric acid has reacted?

Answers

Answer:

zinc oxide is only sparingly soluble in water so best option is to add zinc oxide to diluted hydrocrolic acid

When all the hydrochloric acid (HCl) has reacted, the student can obtain zinc chloride (ZnCl) solution from the reaction mixture by adding ZnO to diluted HCl.

What is a mixture?

A mixture simply refers to a combination of two (2) or more substances or chemical compounds that are present in varied proportion, and they can be visibly seen with na-ked eyes.

In this scenario, the student can obtain zinc chloride (ZnCl) solution from the reaction mixture when all the hydrochloric acid (HCl) has reacted by adding zinc oxide (ZnO) to diluted hydrochloric acid (HCl) because it's sparingly soluble in water.

Read more on mixture here: https://brainly.com/question/24647756

#SPJ2

Describe the two categories used to classify physical changes.

Answers

Answer:

Physical changes can be classified as reversible or irreversible. Melting is an example of a reversible physical change.

Explanation:

(b)
Analysis of a molecule of DNA showed that cytosine accounted for 42 per cent of the
content of the nitrogenous bases. Calculate the percentage of bases in the molecule
which would be thymine. Show your working.

Answers

8%

Explanation:

In a DNA molecule the no. of Adenine bases equal to that of Thymine bases

The no. of Cytosine bases equal to that of Guamine bases.

If we take no. of Thymine bases as x and no. of Cytosine bases as y,

Adenine + Thymine + Cytosine + Guamine = 100

x + x + y+y = 100

2( x+y) = 100

x+y = 50

y=42

therefore x= 50-42 = 8%

Which factor most often affects wind and weather patterns on Earth?

Answers

Answer:

i think its solar radiation

What do the carbon, oxygen, and nitrogen cycles all have in common? a. They all include an exchange of gases with the atmosphere. b. None of the cycles are biogeochemical cycles. c. They are all byproducts of photosynthesis. d. They all sustain life, but living organisms have no part in the cycle. Please select the best answer from the choices provided A B C D

Answers

The best option is A

In which container are the particles of water moving fastest? In which container are the particles moving slowest

Answers

Answer:

Particles move faster the farther they are apart, so the container with the most spread out particles.

Question ( please help me )

1 . Which diagram shows pure substance that are elements

2. Which diagram shows pure substance are compounds

3. Which diagram shows a mixture of compounds

4. Which diagram shows a mixture of elements

5. Which diagram shows a mixture of an element and a compound

Answers

Answer:

1. F, H, E

2. A, D, I

3. G

4. E, B, H

5. C

Explanation:

I do believe i need help.....

Answers

Answer:

C,D, and A I believe

Explanation:

What are the similarities and differences between living on Earth versus living in space?
find 5 points for each section

Answers

Answer:

Differences

• Space is everything in the universe beyond the top of Earth's atmosphere - The moon, Stars, Milky way, etc.

• In space, no one can hear you scream. This is because there is no air in space, i.e, it's vacuum.

• Earth is a planet on solar system. It is the only planet where life exists!!

• Earth is also called "blue sky" cause it has 75% water.

Similarities

•They need oxygen for survival: Man, animals in earth and space need oxygen for survival.

•Water is also need to stay alive.

•Food is very paramount to both man, animal s and organisms.

•Shelter, we all ned a place to lay our head in other to be safe.

•Air everywhere in the atmosphere.

•Water, air, food and shelter are available on earth but their availability differs in space.

•Astronaut need to bring everything one need in space with him or her from Earth. They often recycle the things they bring.

Hope it helps :)

The atmospheric conditions in earth and space is entirely different. Therefore the living in earth and space will be far different on many aspects such as adaptations, habits etc.

What are aliens?

The living things that are believed to be exists in out of earth is called aliens. Some studies shows that there is a possibility to find exotic species living in space.

The study which deals with aliens is called exo-biology. The atmosphere thus, the presence gases, temperature, pressure, etc. will be different for space from that in the earth.

Hence, aliens may need not the presence of oxygen for living as well as the atmospheric conditions that maintains living  in earth will not be there in space.

However, any living irrespective of earth or space need water and some kind of food to survive. Thus the presence of water in some planets opens the way to study the presence of livings there.

To find more on aliens, refer here:

https://brainly.com/question/11895981

#SPJ2

Question 7 (1 point)
Which of the following organelles helps organisms maintain homeostasis by controlling what substances may enter or leave cells?

Answers

Answer:

Cell membranes (plasma membranes) help organisms maintain homeostasis by controlling what substances may enter or leave cells.

Vanadium crystallizes in a body-centered cubic lattice, and the length of the edge of a unit cell is 305 pm. What is the density of V

Answers

Answer:

5.96 g/cm^3

Explanation:

Corner atom = 1/8

Atoms in center = 1

Atoms in face of the cube= 1/2  

Molar mass of V = 50.94 g/mol (from period table)

1 mole = 6.02x10^23

In BCC unit cell:

(8 x 1/8)+ 1=2 per 1 unit cell

Mass: 2(50.94g)/6.02x10^23 = 1.69x10^-22 g/unit cell

305pm=(305x10^-12m÷10^-2m) x (1mL÷1cm^3)

           = 2.837 x 10^-23 mL

1pm=10^-12m

1cm=10^-2m

1mL=1cm^3

density=mass/volume

density of V = 1.69x10^-22g÷2.837x10^-23mL

                    =5.957g/mL

                    =5.96g/cm^3

Drag the names to the order planets based their distance from the sun, beginning with the planet closet to the sun.

Answers

Answer: In this order

Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune

Explanation:

Answer:

Mars.....................

What is the formula for the ionic compound formed by calcium and selenium?

Answers

Answer:

CaSe

Explanation:

not sure!!

which of these is a rough approximation of the cogito?

Answers

Given the Latin meaning of the cogito, we can confirm that it is roughly translated and summarized by the phrase "I think, therefore I am".

Cogito, ergo sum or "The Cogito" is an extremely popular, well-known philosophical phrase credited to Rene Descartes. This Latin phrase is roughly translated as "I think, therefore I am", which appeared originally in "The Principles of Philosophy", and was later translated to a variety of languages in an attempt to reach a wider public, most notably into Latin.

To learn more visit:

https://brainly.com/question/16853649?referrer=searchResults

A compound contains 36.48% Na, 25.41% S, and 38.11% O. Find it’s empirical formula

Answers

Answer:

we can use 100g of compounds as the basis.

Explanation:

Which statement describes the motion of the ice particles in the ice/water bath between minutes 5 and 20?

Choose the correct answer.

Particle motion stays the same because temperature does not change.

Particle motion stays the same because the ice is not completely melted yet.

Particle motion increases because thermal energy is being transferred to the ice.

Particle motion decreases because thermal energy is being transferred away from the ice.

Answers

Explanation:

The ice cube which was solid has turned into the liquid water because the air temperature is warmer than the freezers. Which means the ice particles gather heat energy from the warmer air. Therefore the ice particles have enough energy to break apart (melt)into smaller particle arrangements.

Can elements from group 1 and 2 show up as pure elements in nature? Except Hydrogen

Answers

Answer:

No. Although alkali metals and alkaline earth metals are found in nature, they  are not found as pure elements. Group 1 and 2 are found in their chemical compounds, not pure form.

how many moles are equal to 2.25 moles of sulfur dioxide

Answers

Answer:

6.02 x 10^23 (6.02 times 10 to the power of 23)

How to calculate work done with change in volume and pressure.

Answers

[tex]W = \displaystyle \int dW = \displaystyle \int^{V_2}_{V_1} p ~dV = p(V_2 - V_1) = p \Delta V[/tex]

g. What is crystallization?Name any two go mixtures that can be separated by this method:name any two mixtures that can be separated by ​

Answers

crystallization is a process which helps to separate a pure solid from a solution in its crystal form. This is the in use to purify solid. For an example the salt we get from seawater can have many impurities in it. Hence, the process of crystallization is in use to remove these impurities.

Sugar and salt are examples of products where crystallization does not only serve as separation/purification technique, but where it is also responsible for getting crystals with the right size (and shape) for further application of the products.

- BRAINLIEST answerer

Answer:

Crystallization is the process by which a solid forms, where the atoms or molecules are highly organized into a structure known as a crystal. Some of the ways by which crystals form are precipitating from a solution, freezing, or more rarely deposition directly from a gas.

Sugar and salt are two mixtures that can be seperated by crystallization

Explanation:

Explain how magnesium is produced at the negative electrode from molten magnesium chloride

Answers

Answer:

being cation it migerates to cathode to be reduced to elemental magnesium

Explanation:

Mg+2. +2e -----------Mg

Other Questions
Answer 1-2 please. highlight and number the answers as well. To indicate that ones purpose for writing is to inform, an author would include clues such as __________. How to reduce decimals to fractions. what is the correct ventilation rate for rescue breathing CLASS MISSION STATEMENT reflects whatis important to a class. It gives a sense of meaning andpurpose it guides decisions. What do you think are themain purposes of the class?tesounideas on the notes What is the subject pronoun for Pablo What is the significance of the flabby devil so we had a 24 question test I only missed 9 what is my grade A bullet of mass 6.00 gg is fired horizontally into a wooden block of mass 1.20 kgkg resting on a horizontal surface. The coefficient of kinetic friction between block and surface is 0.190. The bullet remains embedded in the block, which is observed to slide a distance 0.270 mm along the surface before stopping.(a) What was teh initial speed of the bullet?(b) What kind of collision took place between the bullet and the block? Explain your answer comparing the values of the kinetic energy before and after the collision.(c) Calculate the impulse of the block from the moment just after the impact to his final position. Analyze the result. What has more atoms, a mole of carbon or a mole of fluorine?A mole of carbonA mole of FlorineThey have the same number of atoms Find the value of xA. 30B. 40C. 50D. 60 help me please someone Please answer 1. Which of the following statements is FALSE?a. It is better to wait until interest rates are high to start saving.b. Investing tends to have a higher risk than saving.c. A savings account is best for meeting short-term goals.d. Low interest rates decrease the inventive to save. the zhou dynasty collapsed into what A poverty B warring states C oblivian ending all chinese dynastys Cual es el IMC de Santiago si tienen 38 aos, pesa 74kg, mide 1.79m. * third degree with zeros of 3 1 and 5 and a y-intercept of 10 One country has a comparative advantage over another country in the production of a good if it. What is the difference between chromosomes, chromatin, and DNA?I Silver can be plated out of a solution containing Ag+ according to the half-reactionAg+(aq)+eAg(s)How much time (in minutes) does it take to plate 19 g of silver using a current of 3.4 A ?