______elements that have a longer half-life are more _______ than those that have a shorter half-life.

Answers

Answer 1

Answer:

Radioactive elements

Stable

Explanation:

Radioactive elements that have a longer half-life are more stable than those that a shorter half-life.

Half-life is the time taken for half of a radioactive element to decay by half of its original composition.

Now, if a substance have a long half-life, it is more stable and takes time to break down. For atoms with a short life, they are highly unstable and breaks down readily and easily.


Related Questions

which is not a redox reaction?

a. Formation of ammonium sulphate from ammonia and sulphuric acid
b. formation of nitrogen monoxide from ammonia
c. formation of sulphuric acid from sulphur
d. formation of zinc from zinc sulphide ​

help me please

Answers

Answer:

D. formation of zinc from zinc sulphide ​

Explanation:

A redox reaction could be explained as an artificial reaction in which electrons are moved between two reactants partaking in it. This substitution of electrons can be recognized by examining the variations in the oxidation states of the reacting classes. The generation of hydrogen fluoride is an illustration of a redox reaction. We can crack the reaction down to investigate the oxidation and loss of reactants.

how to know the unknown metal in flame test

Answers

Explanation:

The flame test is used to visually determine the identity of an unknown metal or metalloid ion based on the characteristic color the salt turns the flame of a Bunsen burner. The heat of the flame excites the electrons of the metals ions, causing them to emit visible light

Which type of bond will chromium atoms likely to form with other chromium atoms
A:ionic
B:covalent
C:metallic

Answers

Answer: B

Explanation: Covalent bonds where electrons are not shared equally between two atoms are called polar covalent bond. As shown above, the electrons in a covalent bond between two different atoms (H and Cl in this case) are not equally shared by the atoms. This is due to the electronegativity difference between the two atoms.

There are two types of chemical compound one is covalent compound and other is ionic compound in chemistry. The covalent bond will be formed between two chromium atoms. the correct option is option B.

What is chemical Compound?

Chemical Compound is a combination of molecule, Molecule forms by combination of element and element forms by combination of atoms in fixed proportion.

Covalent bond formed by sharing of electron and ionic bond formed by complete transfer of electron.

Element with same electronegativity difference combine together by covalent bond whereas ionic bond is formed by elements whose electronegativity difference is high.

As two chromium is combining that is two two element with same electronegativity is combining therefore, formation of covalent bond is the only possibility.

Therefore covalent bond will be formed between two chromium atoms. the correct option is option B.

To learn more about chemical compound, here:

https://brainly.com/question/26487468

#SPJ2

What color are the stars on the diagram with the lowest surface temperatures?

Answers

Answer:

red supergiants is the answer

How did the substance oxygen change the world??

Answers

Answer: The atmosphere of Earth wasn't always full of oxygen. ... An accidental mutation would some day change the world forever as these organisms would become able to feed off of the sunlight around them, and produce oxygen in a process known as photosynthesis. This oxygen, which none of these organisms could use, was toxic.

12.
Contrast and compare:
a) ionic and covalent bonding​

Answers

Answer:

Ionic bonds - an intramolecular force exist in a nonmetal and metal compounds such as NaCl. The Na donate 1 electon to Cl to complete its octet rule.

Covalent bond - an intramolecular force exist in a nonmetal and nonmetal compounds such as bonds O2, Cl2, CO2, sugar, proteins and most of organic compounds and biomolecules by sharing electrons to bond.

There are two types of covalent bonds: polar and nonpolar. Polar bond is a bond between two different nonmetal atoms of different electronegativities. While nonpolar bond is a bond between the same atom or two differenct atoms of the same electronegativities (if there is). Their electronegativities pull will cancel so that their overall polarity is zero.

Which of the following most likely happens when thermal energy is removed from a chemical reaction?

Answers

Answer:

fewer collisions occur between particles or lowering the temperature

Explanation:

What will happen to the flow of blood in blood vessels (pulse) if heart beat rate increase

Answers

Answer:

"Low levels of the hormone epinephrine, also called adrenaline, cause blood vessels to relax and widen. High levels of this same hormone, along with the hormone norepinephrine, cause the blood vessels to narrow and the heart rate to rise, increasing blood pressure."

Explanation:

2. How can glass be a liquid if it's so hard?

Answers

Explanation:

Glass is not a liquid in the strictest sense of the word. But it is also not a standard solid. The chemistry of glass is complex and research is ongoing, but the current consensus is that glass is a phase of matter all its own, known as an "amorphous solid". Scientists refer to any amorphous solid as a "glass". Glass transitions are highly complex and cannot be treated in the same way as traditional phase transitions.

Answer:

It's a liquid state before its cooled.

please help me..........​

Answers

Answer:

4/6

6/9

8/12

Explanation:

What is Jadi? is it goat? what language is Jadi?

Momentum is mass times

A. acceleration
B. velocity
C. distance

Answers

B. velocity

This is the answer

Below is a phase diagram for Carbon Dioxide. Use this diagram to answer the following question.
In this example we will start the Carbon Dioxide out at a temperature of -20oC and 1 atm of pressure. If the pressure was raised to 100 atm of pressure while still staying at -20oC, what phases would the Carbon Dioxide change between?

Answers

If you mark those points on the phase diagram it appears to be moving from vapor to liquid. If you can’t see how I determined that please let me know and I can further explain.

Vapor to liquid is the same as saying gas to liquid, which I believe to be the correct answer.

A bus travels a distance 150km
in 5 hours where as another bus travel 200km in
6 hours which bus travel fast

Answers

Answer: The bus traveling 200km in 6 hours is traveling the fastest.

Explanation:

Bus 1

150km/5hrs

Simplify -> 30km/hr

Bus 2

200km/6hrs

Simplify -> About 33.333km/hr

Which of the following best describes a hypothesis?
A. An explanation that is supported by scientific data
B. A proven explanation for experimental results
c. A possible answer to a scientific question
D. A question about the natural world
please help i will give brainliest

Answers

It’s C because hypothesis is what u think would happen in the experiment
It is most definitely C, A hypothesis is a prediction before an experiment occurs

Which screw would create a strong hold?

A: The screw with 9 wraps.
B: The screw with 2 wraps.
C: The screw with 10 wraps.
D: The screw with 6 wraps.

Answers

Answer:

The screw with 10 wraps is the correct answer

Explanation:

The screw with 6 wraps would create a strong hold.

What do you mean by screw?

The strongest member of the family of wood screws is a lag screw. It is a reliable and sturdy fastener that frequently has a square head or an externally powered hex drive.

In general, lag screws are significantly stronger and heavier than standard wood screws. They have a tapered point and coarse threads.

Thus, The screw with 6 wraps would create a strong hold.

To learn more about Screw, refer to the below link:

https://brainly.com/question/24168324

# SPJ5

BRAINLEST WILL BE GIVEN TO A RIGHT ANSWER!!!!

Potassium (K) has a charge of +1, and sulfur has a charge of –2. Which best describes the compound they make?

A) The chemical formula is K2S, and the name is potassium sulfide.

B) The chemical formula is KS2, and the name is potassium sulfide.

C) The chemical formula is K2S, and the name is sulfur potassium.

D) The chemical formula is KS2, and the name is sulfur potassium.

Answers

Answer:

A) The chemical formula is K2S, and the name is potassium sulfide. Explanation:

edge

3.) All matter has both physical and chemical properties. A physical property is one that does not change the chemical nature of matter. Which of these choices is a physical property?
A.) height
B.) flammability
C.) ability to rust
D.) reaction with water

Answers

Answer:

D

Explanation:

It would be D because you are observing the reaction and don’t change anything

What separation method collects vapor

Answers

Answer:

evaporation and distilation

Explanation:

Distillation. In distillation, components of a liquid mixture are separated on the basis of the differences in their boiling temperatures. In its simplest form, distillation involves boiling the mixture and collecting the vapor in a condensation vessel, where it turns back into a liquid.

SOMEONE HELP ME PLEASE ILL GIVE BRAINLY!

Is the following picture an example of a chemical change or a physical change?

A chemical change, because the atoms are rearranging to form new molecules.

A physical change, because the molecules are staying the same.

A chemical change, because the molecules are staying the same.

A physical change, because the atoms are rearranging to form new molecules.

Answers

Answer:

It would be a physical change, because the atoms are rerranging to form new molecules!

Explanation:

After pollen grows on a tube down the style,___

Answers

Answer:

as soon as the pollen reaches the stigma after the pollen grain descends down the style when the pollen tube grows into the ovule when the seed germinates

Explanation:

Under a certain set of conditions, the percent yield of a reaction that produces carbon dioxide is 75.0%. What mass in grams of CO2 will actually be recovered if the theoretical yield is 26.7 grams?

Answers

Answer:

Actual yield = 20.03g

Explanation:

[tex]% yield = 100.\frac{actual yield}{theoretical yield}[/tex]% [tex]yield[/tex] = [tex]100. \frac{actual \ yield}{theoretical \ yield}[/tex]

Actual yield = % yield.(theoretical yield) / 100

Actual yield = 75.26.7/100

Actual yield = 20.025

Answer: I got 20.025 and then I rounded it to 20.0

Explanation:

We can change the substance chemically by
freezing it.
True or false​

Answers

The answer for the forgiving question above hypothetically speaking they a screen with imagination is going to be true
It’s mostly going to be true

1. What part of the human body has the same role as the power source in a computer?

2.What part of the human body has the same role as the keyboard or the mouse on a computer?

Answers

Answer:

The heart

Hand

Explanation:

The part of the human body that has the same role as the power source in a computer is the heart. A power source in a computer provides energy that powers the whole system.

The human heart provides the pumping action for the circulatory system. Just like current passes through wires in a computer by energy from the power source, the human heart pumps blood throughout the body in a like manner. Without the pumping action of the heart, the human body is dead.

Also, keyboard and mouse are input devices. They are used to give instruction and perform certain tasks on the computer system.

The human body can also carryout tasks by using the hand. Objects are moved from one place to another just as you drag an icon using the mouse. We type word processors using information from the keyboard, also, we are able write using pen on paper.

What is the number of protons for the following?
190
+2
Os
76

Answers

Answer:

190+2=192

Explanation:

192 add it 192 added

Answer: they are right

Explanation:

Why is NCl3 not soluble in water?

Answers

Answer:

Explanation:

NCl3 does not dissolve in water because it is a nonpolar molecule which is different with water. NCl3 is nonpolar due to the difference in electronegativities between 3 atoms of Cl and 1 atom if N2.

Answer:

A polar solute dissolves into a polar solvent and a non-polar compound dissolves into a non-polar solvent, this rule is known as "like dissolves like".

Help me with homework.

Answers

The chemical equation is said to be balanced if the number of atoms in the reactants and products is the same

Further explanation

Equation balanced ⇒ total number of atoms in reactants(on the left)= total number of atoms in products(on the right)

H₂+O₂---> H₂O

Reactants : H₂, O₂

Products : H₂O

not balanced

H₂O₂ ---> H₂O+O₂

Reactants : H₂O₂

Products : H₂O, O₂

not balanced

Na+O₂ ---> Na₂O

Reactants : Na, O₂

Products :  Na₂O

not balanced

N₂+H₂ ---> NH₃

Reactants : N₂, H₂

Products :  NH₃

not balanced

P₄+O₂---> P₄O₁₀

Reactants : P₄, O₂

Products :  P₄O₁₀

not balanced

Fe+H₂O ----> Fe₃O₄ + H₂

Reactants : Fe, H₂O

Products :  Fe₃O₄

not balanced

A wave is a _____that transfers _____ through a ______
A.) medium, disturbance, energy
B.) disturbance, energy, medium
C.) energy, disturbance, medium
D.)disturbance, medium, energy

Answers

The correct answer is B.) disturbance,energy,medium

A wave is a  disturbance that transfers energy through a medium. There

are types of  such as sound and light waves.

A wave involves the transfer of energy such as sound, light waves etc

through a medium. The medium could be through liquids , solids or air and

they have characteristic waves which pass through them.

When a wave transfers energy through a medium, the matter involved

doesn't experience any type of movement.

Read more on https://brainly.com/question/19210453

How many grams are equal to 0.11 mole of copper(I) chromate?

Answers

Mass of Copper(I) chromate( CuCrO₄) = 19.75 g

Further explanation

The mole is the number of particles contained in a substance

1 mol = 6.02.10²³

Moles can also be determined from the amount of substance mass and its molar mass

[tex]\tt \large{\boxed{\bold{mol=\dfrac{m(mass)}{MW(molecular~weight)}}}[/tex]

0.11 mole of Copper(I) chromate( CuCrO₄) ⇒ MW=179.54 g/mol, so mass :

[tex]\tt mass=mol\times MW\\\\mass=0.11\times 179.54\\\\mass=19.75~g[/tex]

Please help me what is the answer

Answers

There are 20.8 moles of propanol

Further explanation  

The mole is the number of particles(molecules, atoms, ions) contained in a substance  

1 mol = 6.02.10²³ particles

Can be formulated

N=n x No

N = number of particles

n = mol

No = Avogadro's = 6.02.10²³

1.2 x 10⁵ molecules of propanol

[tex]\tt \dfrac{1.25\times 10^{25}}{6.02\times 10^{23}}=20.8~moles[/tex]

Two individual atoms of the same element are slightly different. One has one more proton than it has electrons. The other has one more electron than it has protons. These atoms are both

ions
isotopes
freons
xenons
phlogistons

Answers

Answer:

ions

Explanation:

Individual atoms of the same element but having slightly different number of protons and electrons are called ions.

Ion is a charged particle.

An atom is made up of three fundamental subatomic particles. Protons are the positively charged particles Electrons are the negatively charged particles Neutrons do not carry any charges.

When the number of protons > electrons the body is positively charged.

When the number of electrons > protons the body is negatively charged.

Charged particles are called ions.

Other Questions
Plzzzzzzzz help Which species is a index fossil at Southside middle School 40% of the students play an instrument there are 305 students how many students play an instrument option a is 40 students option b is 140 students option c is 122 students option d is 256 students a. y = 3/4x - 5 I'm confused on how I'm suppose to find the slope and y-intercept. yousef typed a 36-word paragraph in 2/3 minute. What is his typing speed, in words per minute?plsss help 1The main purpose of the Declaration of Independence was to-*(1 Point)explain the advantages of republican governmentpersuade the British king to change his policiesestablish a new central government in the coloniesannounce the colonists' reasons for separating from Great Britain Pick two of the gods or goddesses of Greek mythology described in the Article. Tell how they are the same and different. Also, explain why you chose them. Use facts and details from the Article in your answer.The article: Before there was a world, there was only Chaos, the goddess of nothingness. Then, other immortals surfaced. One is Gaia, the goddess of Earth. Others include Thanatos, the god of death, and Eros, the god of love.From these deities came powerful forces: night and day, fate and doom. They, in turn, created fierce beings. There were giants called Titans and one-eyed monsters called Cyclopes. There were also creatures with 100 hands and 50 heads. These were called Hecatoncheires.The gods often battled each other. In the end, 12 gods and goddesses remained. They ruled the universe from a mountain in the sky.Does this sound like the latest sci-fi adventure? It isn't. These characters from Greek mythology are thousands of years old.Ancient people once built great temples to win the favor of these gods and goddesses. More recently, household items, illnesses, and trips to outer space bear their names. And so, the characters demand attention.Zeus and HeraThere's the mythological deity of Zeus, the king of the gods. He rides a horse with wings and throws thunderbolts when he's angry. He's the lord of justice, yet he can be terribly unfair. In fact, he's a god of many contradictions. He's kind yet cruel. He's playful yet stern. He's a leader yet small-minded. Zeus often pretends to be an animal and drops in on the human world, where he's got a few girlfriends.According to the myths, this angers Zeus's wife Hera. (She's the goddess of marriage after all.) Hera gets jealous and is mean to Zeus's girlfriends and their children. She especially hates Zeus's son Heracles, a super strong warrior. When Heracles was born, Hera sent two snakes to kill him in his crib. It didn't work, according to the stories, And it made Hera try to think of other ways to kill him.Sci-fi action-adventure? How about dysfunctional family?The BrothersIn Greek mythology, Zeus rules the world with his two brothers. One is Poseidon, the god of the sea. The other is Hades, the god of the underworld. (Zeus and Poseidon clearly got the better deal.) Poseidon is as moody as Zeus. Every time he bangs his spear, an earthquake strikes. He may allow seafarers safe passageor not. He is said to be especially hard on a great war hero named Odysseus, who blinded Poseidon's sona big mistake if you need to get home by wooden boat.Hades is also responsible for the seasons. Blame it all on love. He's smitten with Persephone, the goddess of grains, so he takes her to the underworld. In her absence, Earth's temperature plunges. When Persephone revisits the living world for six months of the year, spring and summer reportedly return.The OthersThere are other mythological deities. Athena is the goddess of wisdom. She sprang out of her father Zeus's head fully grown. Apollo is the god of the sun, who lights the world each day when he rides across the sky in a carriage drawn by fiery horses. There's Hermes, the god of speed and travel; Ares, the god of war; and Artemis, the goddess of the hunt. Many more oversee the world and turn it into their playground.Sure, they fall in and out of love, seek revenge, and rage over every problem. They plan ways to get what they want. But they also laugh and cry. They suffer and celebrate. If they were any more human, they wouldn't be deities at all.Maybe that's why Greek myths have lasted for thousands of years. In the gods and goddesses, we see parts of ourselvesthe good and the bad. 16.9 and 1.7 and 0.17 and 2.0 round to nearest tenth Find the inverse of the function f(x) = 2x - 4 A turtle is 20 5/6 inches below the surface of the pond. It dives to a depth of 32 1/4. What is the change of the turtles posistion. HELP ASAP PLEAS AND THEANK YOU! Explain the difference between a Polynomial and a Monomial, and how do you add/subtract and multiply and factoring them? Can somebody give an introduction paragraph only 3 sentences? for an essay title The negative effects of the global pandemic. (i can't think of one)WILL M|RK BRAINLIEST We had a science teacher who's style of teaching was very effective. He had to teach studentsus whose understanding of science was hazy. To us science was a subject whose main attraction10 ABPRACTICE F1WhenclauseUnderline the incorrect sentences and rewrite them correctly.EXAME1st pmainsutT2the chance to mess around in the laboratory. Previous science teachers thought of us as a noisy buswhose hope of passing the subject was zero.Our new teacher'sfirst lesson with us was on a topic that its principle we never could grasp. Hemade one of us try to move a table whose legs were fixed to the floor. After a while he scolded thepanting boy whose efforts was all useless: Lazy boy! Didn't do any work! We all thought we had ateacher who was insane. Then we suddenly realised the principle of 'work done' whose point hadescaped us before: if the object doesn't move, there's no 'work done!! We progressed fast under ourteacher who his unusual methods aroused our interest.i We had a science teacher whose style of teaching waswas veryeffectiveHe had to teach students like us whose understanding of science was Plants have an added layer that animal cells do not. What is that added layer called? Aretha Foster, single, is marketing director forThe Canterbury Community, a senior living center. She is paida weekly salary of $735.00. If her weekly federal income taxwithholding is $66.84, find the number of withholding allowancesshe claims if the tax is computed using the percentage method. which of the following is an important step in the formation of a fossila.) the organism must be a reptile b.) the organism must be buried quickly c.) the organism must die of natural cause d.) the organism must not have any fur How are the jamb statues different from any other wall/architectural carvings? What mood best describes the figures outside the Cathedral What two consecutive odd integers have a sum of 88? Can someone help me ASAP plz? 75 points B.Choose the correct answer.1. Equatorial region falls in the ________ region of the Earth.a. Torridb. Temperatec. Frigidd. Polar Early American leaders designed the Articles of Confederation to create a nationalgovernment that:XA. could stop state governments from passing unfair laws.B. would not be powerful enough to become a tyranny.c. would regulate the economy to protect the poor.D. could enforce laws through a powerful court system.