The period of time needed for a radioisotope to lose one-half of its activity is known as that isotopes

Answers

Answer 1

Explanation:

The radioactive scattering technique is called radioactive degradation. For each radioactive isotope, the natural radioactive cycle is special and is determined by a period of time termed a half-life. One half-life was its time needed to experience radioactivity for half of both the radioactive nuclei.


Related Questions

fill in the blank question














please help asap!!!!!!!!!!!!!!

Answers

Answer:

since unlike charges attract, negative side of another water molecule, neutral

What is the balanced equation of Na2S+CuSO4=CuS+Na2SO4?​

Answers

what you were given is the balanced chemical equation

In the cycle, after a new moon, _______________ means light appears on the _____________ side of the moon and continues to ________________.

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Answer:

Explanation:

In the cycle, after a new moon, waxing means light appears on the right side of the moon and continues to increase.

Which statement correctly describes acetyl-CoA?
It connects glycolysis to the citric acid cycle.
It connects the citric acid cycle to the electron transport chain.
It is the product of catabolism of proteins.
It is the product of catabolism of fats.

Answers

A. It connects glycolysis to the citric acid cycle.

Explanation: Right on edge

How many grams of Sn will be created when 114 grams of SnO2 react with excess H2? SnO2 + H2 ->Sn + H2O
I

Answers

Explanation:

CNN vfbtgnynynynynyuybunujy

18)
Have you ever noticed things move or change in nature without the help of a human? Think about patterns of ripples formed in
sand on the playground, and a hole or dip formed in soit under a rain gutter. What is the BEST explanation of how things like this
happen?
A)
Soitand-rocks make changes tech season like teaves on trees
B)
Water and/or wind make changes to soil and/or rocks over time
C)
Gravity causes dirt on the playground and under gutters to move
D)
The Moon causes rocks and soil to move, like the tides of oceans
16)
Which process causes hillsides and mountains to gradually get smaller?
-)
rch
O
Oop

Answers

Answer:

B)

Explanation:

because the wind is moving the sand and the rain moves the soil

16) weathering and erosion

How many atoms of tin are found in 3.50 moles of tin?

Answers

Answer:

2.11x10²⁴ atoms

All three types of worms that undergo asexual reproduction use which process?
binary fission
budding
fragmentation
spore formation

Answers

Answer:

binary fission

Explanation:

i just took the quiz

10. Which of these elements is the most electronetative?
(10 Points)
Nitrogen
Calcium
Bromine
O Aluminum

Answers

it would be nitrogen
Out of the four Nitrogen is the most electronegative. Electronegative is basically determined by whichever atom is closest to F (the most electronegative)

Nitrogen is only a few electrons difference than Fluorine. Bromine is still quite electronegative but it has whole extra valence shells making it not as electronegative as nitrogen

2. When two oppositely charged particles are brought near each other, they produce a torceted the stone
shows the force around two changed particles
Which force do the arrows represent?
A an unbalanced force
B. a frictional force
C.an electrical force
D.a gravitational force

Answers

Answer:

A

Explanation:

An unbalanced force is your answer.

Which of the following is NOT a clue that could indicate a chemical change?

A. Change in color
B. Mixing of reactants
C. Change in energy
D. Release of a gas
E. Formation of a precipitate

Answers

Answer:

i think its C, but im not 100% sure. if not c, then D, but C sounds more right.

Explanation:

everything else sounds like sure fire sighs of a chem change. good luck

Question 1 of 10
What do biologists study?
A. Living things
B. The properties of light
C. The properties of matter
D. How matter and energy interact
SUBMIT

Answers

Answer:

A

Explanation:

Biology is the study of living things.

Define unbalanced forces(giving Brainly)

Answers

Answer:

Unbalanced forces are forces whose net amount is not zero.

This can take place when two equal forces are acting in the same direction or opposite direction but with different forces.

Unbalanced forces make some change in the position of the object on which force is exerted.

Answer:

This can take place when two equal forces are acting in the same direction or opposite direction but with different forces.

Unbalanced forces make some change in the position of the object on which force is exerted.

What human actions contributed to the nutrient pollution of Lake Okeechobee?
PLZ HELP MEEEEEEEEEEEEEEEE I BEG YOU

Answers

Answer:

These trends were attributed to both the increased external loads and to a reduction in the lake sediment's ability to assimilate nutrients from the water column. The main sources of external nutrient inputs are animal waste and fertilizers applied to food and forage crops.

What type of energy does most energy end up as?
O heat
O chemical
light
O electrical

Answers

Answer:

Heat

Explanation:

PLEASE HELP ASAP I'LL MARK BRAINLIEST
Thank you :)
8. A meteor moving 468 km per minute traveling in a south-to-north direction passed near Earth in 2013.

Does this statement describe the meteor’s speed or velocity? 1pt


9. Why did you choose the answer above (explain why)? 1pt

Answers

Answer:

Its velocity was 7.8 km/s northward.

Explanation:

Because the meteor was only 45 m wide and was 27,700 km above Earth's surface it was not visible with the aid of a telescope.

What would be the correct answers

Answers

Answer:

A chemical bond is formed and energy is absorbed I do believe

Explanation:

Which layer over time due to chemical and physical weathering leads to the other layers?

Answers

Answer:

chemical weathering occurs on the surface of minerals, the water and acids that control chemical weathering require access to the surface. Physical weathering breaks the rock to provide that surface

5. How would the food web in Figure 7 change if the numbers of red foxes were
greatly reduced by hunters?
Help meee

Answers

Answer:

I cant help you because you didn't provide a picture for the graph

Explanation:

How can a colorless substance be made visible on a chromatography

Answers

Explanation:

s f colourless substances can be followed by the use of fluorescent adsorbents. Ultra-violet light of a wavelength absorbed by the adsorbed substance is employed. The part of the column containing adsorbed substance then appears as a dark band.

HOPE THSI HELPS HAVE A NICE DAY!

Answer:

Colourless substances can be followed by the use of fluorescent adsorbents. Ultra-violet light of a wavelength absorbed by the adsorbed substance is employed. The part of the column containing adsorbed substance then appears as a dark band.

Water can exist in all three states of matter.
Describe the arrangement and movement of particles in each of the three states of matter. Explain what happens to the particles in a liquid during boiling.

I'll give someone brainly and thanks if they answered the question correctly. 30 points!!

Answers

Answer:

The particles in a liquid move very quickly due to heat while it is boiling and gradually turns to gas

What type of energy does each ball have before it falls

Answers

As the ball falls towards the ground, its gravitational potential energy is transformed into kinetic energy.

9. Do all enzymes function at the same pH?

Answers

Each enzyme has an optimum pH but it also has a working range of pH values at which it will still work well. This depends on the type of enzyme. The enzyme pepsin breaks down proteins in the acidic conditions of the stomach. ... Catalase has an optimum pH of 9 and a working range of between pH 7-11.        Hope this was helpful

Explanation:

Why do surface waves break along the shore?​

Answers

As waves reach the shore, the energy in front of the wave slows down due to friction with the shallow bottom. ... The wave breaks, and it usually does so in water depth that is 1.3 times the wave height.

Answer:

because the global sea level rises while the poles temperature increases

Explanation:

The atomic size of zirconium is smaller than
a. niobium
b. Yttrium
c. Molybdenum
d. None of the above

Answers

Answer:

b

Explanation:

because hahamaskdjdjskskskskkssksksks

Since I'm a tomboy, does that mean I'm gender non-conforming?

Answers

i guess so? ur basically just breaking gender roles/ stereotypes. do what makes u happy :p

Answer:

Hello

Explanation:

I am a girl,not a tomboy.

Will we talk about something?

Explain why the elements in group 7 have 7
valence electrons.

Answers

Answer:

The periodic table was made that way by the scientists who created it

Explanation:

to make things easier for the users.

Given the reaction: 2 H2 + O2 => O2 = 2 H2O.
What is the total mass of water formed when 497.80 g of oxygen reacts with hydrogen?

Answers

Mol of oxygen = mass / Mr = 15.556
1:2 mol ratio so multiple by 2
= 31.1125 mol of water
Mass = mol x Mr
= 31.1125 x 18 = 560.025g

hiii please help i’ll give brainliest

Answers

Answer:

the applied force is greater than the force of friction

Explanation:

Why does lowering the pressure cause a liquid to boil?
A. It becomes easier for molecules to escape.
B. It pushes molecules out of the liquid.
C. It causes the temperature to rise.
D. It changes the volume of the liquid.

Answers

Lowering the pressure in a container will cause the liquid in the container to boil faster because it becomes easier for the molecules to escape.

What causes boiling?

Boiling happens when the vapor pressure of a liquid equals the atmospheric pressure.

By lowering the atmospheric pressure, the vapor pressure of a liquid takes a lower time to equal the atmospheric pressure.

Thus, it becomes easier for the molecules of the liquid to escape from each other.

More on boiling and pressure can be found here: https://brainly.com/question/2510654

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