actinium-226 has a half-life of 29 hours if 100 mg of actinium-226 disintegrates over a period of 58 hours how many mg of actinium-226 will remain

Answers

Answer 1
i am not sure i’m sorry
Answer 2

Answer:25 g

Explanation:

in quizlet


Related Questions

Please work out all the problems on this page, no links, no i don't knows please do not take advantage of me or my points please actually answer these questions

Answers

Answer:

9) C

10) C

11) D

Explanation:

Hope I could help

Can I plz have brainliest

The answer is in the pic

PLEASE HELP ME! I'll GIVE BRAINLIEST!

Answers

Answer:

Ice cubes melting is an example of the temperature of the environment being warmer than the ice cubes. Because of this, the ice gets heat energy from the air and therfore has enough energy to break into liquid.

Explanation:

Lemme know if you need more explanation!!

Answer:

The process to this is melting.

Explanation:

Due to the temperature of heating, it will melt, which will cause the solid, to a liquid.

I really hope this answers your question!

How to grow geodes crystals?

Answers

Answer:

They will need to be just a touch larger than your eggshells. We loved the glass bowls because it was so much easier to watch the growth process. Carefully crack several eggs and scramble the innards for lunch. Take your shells and wash them gently under warm water.

Explanation:

Explanation:

Pour about a half cup of hot tap water into a cup.

Stir in alum until it stops dissolving. ...

Add food coloring, if desired. ...

Set your eggshell or plaster geode inside a cup or bowl. ...

Pour the alum solution into the geode, allowing it to overflow into the surrounding container and eventually cover the geode.

it takes 15 hours to complete

Please help i need this as soon as possible

Answers

Answer:

1. 1, 3, 2

2. 2, 2, 3

3. 2, 1, 2, 1

4. 2, 1, 2

Chemical reaction for acrylic fiber (7th grade chemistry) pllllzzzzzz help ASAP.

Answers

Answer: The chemical reaction for fiber is that it oxidizes.

The moon orbits the....?

Answers

Answer:

the moon orbits the Earth

Three examples of physical change are ______________.
Group of answer choices

pond freezing, breaking glass, a burning candle

boiling water, a nail rusting, a melting candle

applying lipstick, making lemonade, baking bread

melting ice, mowing the lawn, carving a statue

Answers

It’s the 1st, 2nd, and 5th answers
A pond freezing is definitely one

Can someone help me is done at 6m Please help

The variability of living organisms, including within or between species or ecosystems is called?

Answers

Biodiversity I believe I had the same work and the teacher said it was biodiversity so that’s most likely the right one or my teacher lied

Answer:

Biodiversity

Explanation:

pls i need help with this vocab pls! ASAP

Answers

1. phototropism

2. geotropism

3. tropism

4. biome

5. symbiosis

6. cortex

1. 2. 3. 4.
5. it’s what the person above me said

How is fiber important to the body?

It helps the body digest large molecules.

It is a powerful micronutrient.

Toxins attach to the fiber as it moves through and out of the body.

It contains stored energy.

Answers

Dietary fiber increases the weight and size of your stool and softens it. A bulky stool is easier to pass, decreasing your chance of constipation. If you have loose, watery stools, fiber may help to solidify the stool because it absorbs water and adds bulk to stool. Helps maintain bowel health.

Help-
Help-
Help-
Help?

Answers

I don’t know the exact answer but this information may help. :) The sun transfers energy to the grass by radiation, which they turn into energy through photosynthesis. They have 100% of the energy in a food chain. Energy is transferred between organisms in food webs from producers to consumers. The energy is used by organisms to carry out complex tasks. The vast majority of energy that exists in food webs originates from the sun and is converted (transformed) into chemical energy by the process of photosynthesis in plants.
Energy is transferred into the food chain since the sun produces energy to plants and with that animals eat plants and so on.

The Earth orbits the ....?

Answers

Answer:

the sun

Explanation:

Because the sun's gravity keeps the earth in it's position and also stop the earth from grifting away.

The earth orbits the sun

The weather map shows the weather conditions for one day across the United States. Based on the weather map, what will be the weather like in Texas during the next 24 hours?

Answers

Heavy rain I believe
Heavy rain I believe

The arrow in a chemical equation always points toward the
A reactant
B product
C right
D left

Answers

Answer:

The answer is product

Explanation:

Hope this helped Mark BRAINLEST!!!

B, it’s product! hopefully this helped

How many atoms of each element are chemical formula: 3K2O3.
How many atoms of each element are chemical formula: 2H3NCH3Br.
How many atoms of each element are chemical formula: 4Ar2CO3.
Each of them are different questions pls help me!!! I need to get this right to bring my grade up from a C to an A!!!

Answers

Answer:

In 3K2O3 - 6 K atoms, 9 O atoms

In 2H3NCH3Br - 12 H atoms, 2 N atoms, 2 C atoms, 2 Br atoms

In 4 Ar2CO3 - 8 Ar atoms, 4 C atoms, 12 O atoms

Explanation:

All you need to do is multiply the coefficient by the number of each atom in the compound. For example, H3NCH3Br has 1 nitrogen, 1 carbon, 1 bromine, and 6 hydrogens. If you have 2H3NCH3Br, just multiply all those numbers by 2.

3k2o3 = 15

2h3nch3br = 17

4ar2co3 = 24

In what way are liquids different from solids?
Group of answer choices

Liquids do not have a fixed shape; solids do

Liquids are always denser than solids

Liquid molecules are lighter than solid molecules

Liquids are made of atoms: solids are made of molecules

Answers

Answer:

a. Liquids do not have a fixed shape; solids do

Explanation:

I’m really sorry thats the only one I for sure know that is true...

A. Liquids do not have a fixed shape; solids do”

In which situation would the atoms in an object begin to move closer together during a phase change?
Group of answer choices

heat is removed as a gas turns into a liquid.

heat is removed as a liquid turns into a gas.

heat is added as a liquid turns into a solid.

heat is added as a solid turns into a gas.

Answers

the 1 st one you said i think

When heat is removed as a gas turns into a liquid. In liquid state molecules are more  closer than in gases. Hence, option a is correct.

What is a phase change ?

The interconversion between states of matter is called phase change. The conversion of solid to liquid, liquid to gas, etc. are examples of phase changes.

In solid state, particles are closely packed and cannot move apart. The strong intermolecular forces can be weaken by applying energy. In liquid state, particles have some more space to low and in gases they are far apart.

When gases phase converts to liquid, the heat is removed from the system and make make the intermolecular forces stronger to bring molecules closer.

Find more on phase changes:

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How does fission in most nuclear reactors generate electricity? *


Particles from the reaction collide with WATER, which turns into steam that spins a turbine.
Particles from the reaction collide with a GENERATOR, making electricity.
Particles from the reaction collide with a TURBINE, which spins and makes electricity.
Particles from the reaction collide with ELECTRONS, directly creating electricity.

Answers

Answer:

Particles from the reaction collide with a turbine,which spins and makes electricity hope this answer helps

How does 250 mL of water compare to 500 mL of water?
Group of answer choices

They have the same melting point, but different boiling points.

They have the same boiling point, but different melting points.

They have the same density, but different volumes.

They have the same volume, but different densities.

Answers

they have the same density but different volumes
The have the same density but different volumes

In some parts of the world hurricanes are called typhoons. The map below shows where typhoons form and the paths they usually follow. Typhoons do not generally form in the area at X. What is missing in area X that would allow typhoons to form there?

Answers

Answer:c warm ocean water

Explanation:

Answer C salty ocean water

help ill give brainliest need help with number 8

Answers

Answer:

the sun goes away and takes heat with it

Explanation:

the hotter it is in the morning the hotter the rock will be, the cooler it is at night the cooler the rock will be

Please help me with this answer correct

Answers

Answer:

hope this helps :)

Explanation:

for the first one, you can look at the periodic table and look at the atomic number and it will show you how many protons there are giving you the answer because protons and electrons are equal in a pure element

a- carbon

b- neon

c- boron

d- oxygen

e- helium

f- hydrogen

g- lithium

h- beryllium

i- nitrogen

1- sulfur

2- S

3- 16

4- 32.066

5- 16

6- 16

7- 16.066

8- draw circles and put 16 dots like on the other page and in the middle put 16 nuetrons and electrons

9- 6 i think

Trust in God and he will guide you throughout life, trust me without God life sucks and is meaningless! Jesus was there for you when other hurt and abandoned you he was with you comforting you, don’t neglect him trust and love him! Repent of your sins and live by the Bible!

Question: Explain how each of the three types of energy transfer occurs in a solar oven while it cooks a bowl of soup.
Read below for some ideas of the answer and if you answer please make your answer reasonable.


To remove a metal pan from a hot oven, you must use an insulated pad or glove. If you do not, energy will transfer quickly to your hand by conduction. The pan is much hotter than your skin, so its particles have a lot more thermal energy. When the particles of the metal bump into the particles of your skin, energy is transferred.

When the hot pan is on top of the stove, you can tell that it is hot by holding your hand above the pan. The moving air around the pan absorbs energy and carries it to your skin by convection. You can also absorb energy by holding your hand to the side of a stove’s heating element. Energy is transferred through radiation to your skin.

Energy in the form of heat can be transferred by conduction, convection, and radiation. During all three types of energy transfer, the thermal energy of the warmer object decreases and the thermal energy of the cooler object increases. In all three types of energy transfer, energy is being transferred to a cooler object.

Answers

Answer:

Converting light energy to heat energy: Solar cookers concentrate sunlight onto a receiver such as a cooking pan. The interaction between the light energy and the receiver material converts light to heat and this is called conduction. This conversion is maximized by using materials that conduct and retain heat.

Explanation:

Solar cookers focus sunlight onto a recipient, like a cooking pan, to convert light energy into thermal energy.

What is energy?

Energy is the ability to perform work in physics. It could exist in several different forms, such as potential, kinetic, electrical, chemical, thermal, electrical, radioactive, etc. Additionally, there is heat and work, which is energy being transferred from one body towards another. Energy is always assigned based on its nature once it has been transmitted.

Motion is a property of all energy types. For instance, if a body is moving, it possesses kinetic energy. Even while at rest, a tensioned object like a spring or bow has the ability to move; this is because of its design, which includes potential energy. Solar cookers focus sunlight onto a recipient, like a cooking pan, to convert light energy into thermal energy. Conduction is the process by which light energy is transformed into heat by interacting with the receiver material. Utilising heat-conducting and heat-retaining materials will maximise this conversion.

Therefore, Solar cookers focus sunlight onto a recipient, like a cooking pan, to convert light energy into thermal energy.

To know more about energy, here:

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what is mostly made up of solid water?

Answers

Answer:

ice

Explanation:

FREEZE WATER, YOU GET ICE

1. Which layers from North America are the same age as layers from Europe? Use the number or letter of the layer to identify it.

Answers

answer:

1 with A, 3 with D

explanation:

look at the images they have inside them and see ones match
1 with A and 3 with D

what is the property of every heterogeneous mixture

Answers

Answer:

The property of ever heterogeneous mixture is a solid dissolved into a liquid.

Explanation:

A student wants to heat a piece of iron so that its temperature rises by 20 degrees C. What information does she need about the iron to plan the experiment? A.)Temperature.
B.) Mass. C.) Conductivity. D.) Surface area.

Answers

Mass................
The answer would be B: Mass. :-)

which best describes the relationship between the direction of energy and wave motion in a transerve wave?

(answer choices are in picture)

Answers

I think the answer is c I may be wrong but let me know
The correct answer is D

A galaxy contains stars, gas, and dust. This matter must be held together or the galaxy will break apart. What is responsible for holding the stars, gas, and dust together in a galaxy?

Answers

gravity is responsible !

help i'll give brainliest help with number 13 and 14 please

Answers

Answer:

ice:1

iceberg:2

water:3

lake:4

boiling water:5

Explanation:

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