Nuclides below the valley of stability can become more stable through which of the following processes?

(a) neutron bombardment
(b) gamma emission
(c) positron emission
(d) beta emission
(e) neutron emission

Answers

Answer 1

The Correct option is C.

Nuclides below the valley of stability can become more stable through the process of positron emission.

What is Positron emission?

Positron emission tomography (PET) is a technique that measures physiological function by looking at blood flow, metabolism, neurotransmitters, and radiolabelled drugs. PET offers quantitative analyses, allowing relative changes over time to be monitored as a disease process evolves or in response to a specific stimulus.

This technique is based on the detection of radioactivity emitted after a small amount of a radioactive tracer is injected into a peripheral vein. The tracer is administered as an intravenous injection usually labelled with oxygen-15, fluorine-18, carbon-11, or nitrogen-13.

Nuclides below the valley of stability can become more stable through the process of positron emission.

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Related Questions

How do I perform a titration on coca-cola or Pepsi, when I cannot see the color change because the color is too dark. The indicator is phenolphthalein.

Answers

Answer: maybe you need to do very dilute solution?

Explanation: you should have an pH meter instead of indicator.

Phosphoric acid H3PO4 have three ekvivalent points.

Another way could be using a conductivity meter.

For dark reactants, use a pH meter.
For colorless WEAK reactants(acids/bases), use phenolpthalein..
For colorless STRONG reactants, use methyl orange.

What does the mole ratio represent

Answers

Answer:

A mole ratio is a conversion factor that relates the amounts in moles of any two substances in a chemical reaction

Explanation:

If a sound wave refracts, what happens to it? Select all that apply.
It changes its speed and wavelength when it bounces off of a solid surface.
B
It changes direction when it passes through an opening
С
It changes its speed and wavelength when it passes through an opening
D
It changes direction when it passes from one medium to another
E
It changes its speed and wavelength from one medium to another.
F
It changes direction when it bounces off of a solid surface.

Answers

The answer is a and c and d

If a sound wave refracts,It changes its speed and wavelength when it bounces off of a solid surface,It changes its speed and wavelength when it passes through an opening, and It changes direction when it passes from one medium to another. Therefore, option A, C and D are correct.

What is refraction of sound wave ?

An important case in which sound waves change form or spread out is called refraction. This phenomenon affects the bending of a sound wave owing to changes in the wave's speed.

Refraction is the reason ocean waves near a shore parallel to the beach and why glass lenses can be used to focus light waves.

If the air above the earth is warmed than that at the surface, sound will be change shape back downward toward the surface by refraction. Sound propagates in all directions from a point source.

Thus, option A, C and D are correct.

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Viruses are not considered organisms, because they lack many of the characteristics of living things. A virus is essentially a string of genetic material in
a protein coat. Some viruses contain DNA, while others, called retroviruses, contain RNA. One example of a retrovirus is HIV, which causes AIDS
How is RNA different from DNA? Choose the 2 statements that apply
A. DNA and RNA use different sets of nitrogen bases.
B
DNA has 1 strand of genetic material while RNA has 2 strands
C. DNA contains deoxyribose sugar and RNA contains ribose sugar,
D. DNA and RNA are proteins

Answers

Answer:

well, I think the answer is C

The difference between RNA and DNA are:

A. DNA and RNA use different sets of nitrogen bases.

C. DNA contains deoxyribose sugar and RNA contains ribose sugar.

What are RNA and DNA?

DNA and RNA, both are genetic materials, but DNA is double-stranded and RNA is single-stranded.

DNA is present in all animals and plants, and RNA is present in viruses and bacteria.

Both are made up of nitrogenous bases and sugar.

Thus, the correct options are A and C.

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Microorganisms have a major role in maintaining soil biodiversity. They recycle nutrients in ecosystems and decompose organic matter in soil. Organic matter contains dead and living plant and animal materials. Microorganisms convert these materials into simpler compounds that maintain soil quality and help with plant growth.

Which solution could best help to restore or increase microorganisms and soil biodiversity?
A.
adding manure or compost to the soil
B.
spraying chemical weed-killers and fertilizers on the soil
C.
removing all ground-covering plants from the soil
D.
adding sewage containing synthetic materials to the soil

Answers

Answer:

A i think

Explanation:

The solution that could best help to restore or increase microorganisms and soil biodiversity is adding manure or compost to the soil.

What are microorganisms?

A microorganism, or microbe, is an organism of microscopic size, which may exist in its single-celled form or as a colony of cells. The possible existence of unseen microbial life was suspected from ancient times, such as in Jain scriptures from sixth century BC India.

Microorganisms are minute organisms that are invisible to the normal eye.” Microorganisms are so small that they can only be seen under a microscope. These include a huge range of organisms such as bacteria, viruses, fungi, algae, protozoa, etc.

Given options are-

A. adding manure or compost to the soil

B. spraying chemical weed-killers and fertilizers on the soil

C. removing all ground-covering plants from the soil

D. adding sewage containing synthetic materials to the soil

Therefore, The solution that could best help to restore or increase microorganisms and soil biodiversity is adding manure or compost to the soil.

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What is the ratio of the number of molecules in 1 L of CO2(g) to the number of molecules in 1 L of CH4(g) at the same temperature and pressure? * 2 points 1:1 3:5 1:2 2:4

Answers

Answer:

1:1

Explanation:

Based on Avogadro's law, the volume of an ideal gas is directly proportional to the moles (Or number of molecules) presents of this gas under constant temperature.

The volume of the gas is independent to the nature of the gas

Using this law, we can change the state as:

X number of molecules of CO₂ in X number of molecules of CH₄ (Because are occupying the same volume). That means the ratio of molecules is:

1:1

Help me pretty please

Answers

The answer is c ..................

1. An unknown compound was found to have a percent composition of: 47.0%
potassium, 14.5% carbon, and 38.5 % oxygen. What is its empirical formula? If
the true molar mass of the compound is 166.22 g/mol, what is its molecular
formula?

Answers

Answer:The empirical formula is KCO2

Explanation:

The spreading of a mechanical wave into the region behind an obstruction is called --------- what ?

Answers

Diffraction occurs whenever a portion of a wavefront is obstructed by some opaque object.

what happens to the rate of a reaction as the reaction progresses

Answers

The rate of a reaction decreases as the reaction progresses.

The Moon only emits light at night.
True
False - does not emit light at all

Answers

Answer:

It's trueeeeeee:))))))

Answer:

TRUE

Explanation:

which of the following describes the properties of a substance?

A. how it reacts with other chemicals.
B. how it behaves.
C. all of these.
D. how it looks​

Answers

The answer is A how it react with other chemicals


❤️
C all of them because all these can describe peoperties like color or texture or reactions or different behavior

Convert 160g to mg.

Answers

Answer:

160 grams is equal to 160,000 milligrams.

Explanation:

Please like and mark brainliest!

Hope it helps!

Answer:

1g=1000mg

160g=160000

PLEASE HELP I LITERALLY CAN'T
What volume does 1 mol of Ar(g) occupy at 25 C and 100 kPa?
a) 24.8 L
b) 1.0 L
c) 22.4 L
d) 40.0 L

What volume is occupied by 1 mol of Cl2(g) at SATP?
a) 12.4 L
b) 11.2 L
c) 22.4 L
d) 24.8 L

Answers

I think the answer is B for 1. And D for 2.

The amount of volume will be (1) 23.10 L and ( 2) 22.4 L by using gas law.

What is gas law?

Gas law gave the relation between pressure, volume and temperature.

It can be expressed as:

PV = nRT.

where, P is pressure, R is gas constant and T is temperature.

Calculation of volume by using gas law.

1) Given data:

n = 1 mol

T = 25 degree C = 25 + 273 =

P = 100 kpa

Volume can be determined by the gas law.

PV = nRT

V = nRT/P

V = 1 × 8.31 × 278 / 100

V = 23.10 L

2) It is known that at STP 1 mol of any gas volume will be 22.4 L.

Therefore, the correct answer will be option (c).

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What is the mass of 4.57 x 1021 molecules of ammonia (NH3)?

Answers

Answer:

4665.97

Explanation:

ng.
3. Connect to Technology How do probes,
including landers and rovers, improve our
ability to make observations of other planets?
s

Answers

They make finding things easier so we plug abs don’t need to go on the other planets and can just send the -robots

Most large mountains are the result of a(n)?

River
Volcano
Earthquake
Hurricane

Answers

Answer:

C.) Earthquake

Explanation:

Most mountains occur due to the movement of tectonic plates. They slowly push into each other, and the earth's crust rises over time forming mountains.

Earthquakes occur due to the shift of tectonic plates. It sends seismic waves throughout the earth's crust, and causes the ground to shake temporarily.

1. What is a common example of a converging mirror?
2. Where must you (the object) stand in front of a converging mirror if you want to see an upright,
virtual image of yourself? What is the size of the image compared to the object?
3. A converging mirror produces no image when the object is at
4. If the centre of curvature in a converging mirror is at 10cm, the focal point will be at
om

Answers

1)Concave mirrors are called converging mirrors because as light falls on the mirror, it collects the light and refocuses the parallel incoming rays.

2)The image produced by a convex mirror is always virtual, and located behind the mirror. When the object is far away from the mirror the image is upright and located at the focal point.

3)When the object is located at the focal point, no image is formed. As discussed earlier in Lesson 3, light rays from the same point on the object will reflect off the mirror and neither converge nor diverge.

sorry I don't know 4one

i HOPE IT'S HELP

A 10.150g sample of a compound known to contain phosphorus and oxygen yields 5.717 g of oxygen. Find the empirical formula of the compound

Answers

Answer: The empirical formula is [tex]P_2O_5[/tex]

Explanation:

Mass of O = 5.717 g

Mass of P= (10.150-5.717) g = 4.433 g  

Step 1 : convert given masses into moles.

Moles of O =[tex]\frac{\text{ given mass of O}}{\text{ molar mass of O}}= \frac{5.717g}{16g/mole}=0.357moles[/tex]

Moles of P=[tex]\frac{\text{ given mass of P}}{\text{ molar mass of P}}= \frac{4.433g}{31g/mole}=0.143moles[/tex]  

Step 2 : For the mole ratio, divide each value of moles by the smallest number of moles calculated.

For O = [tex]\frac{0.357}{0.143}=2.5[/tex]  

For P =[tex]\frac{0.143}{0.143}=1[/tex]

The ratio is to be converted to whole number

Thus whole number ratio of O : P = [tex]2.5\times 2:1\times 2=5: 2[/tex]

Hence the empirical formula is [tex]P_2O_5[/tex]

How would I make a biodegradable mask

Answers

Answer:

Explanation:

Go to a craft store and buy so me material that are biodegradable

Which is a property of a covalent compound?

A.being shaped easily

B.good electrical conductivity

C.low melting point

Answers

Answer:

c: low melting point

Explanation:

melting point is dependent on intermolecular forces. in covalent compounds, electrons are shared more equally. this means there is less separation of positive and negative charges within the molecules.

A. How do the following factors affect the spontaneity of a reaction?
i. Enthalpy
ii. Entropy ​

Answers

The more negative the enthalpy is, the more spontaneous the reaction will be, because a negative enthalpy releases heat. The more positive the entropy is, the more spontaneous the reaction will be, because a positive entropy increases disorder.

2. What percentage of the offspring
will have the red flowers?

Answers

Answer:

1/4 of the offspeing will have the red flowers

A gas has an initial volume of 15 L. If the temperature increases from 330 K to 450 K, what is the new volume.

Answers

Answer:

20.(45)L or about 20.4545L

Explanation:

PV = nRT

Where:

P - pressure

V - volume

n - number of particle moles

R - a constant

T - temperature in K

We can assume the P and n (and definitely R) stay the same, so we infer that

[tex]V_1 = \frac{nRT_1}{P} = 15L\\V_2 = \frac{nRT_2}{P}\\V_1 / V_2 = \frac{nRT_1}{P} / \frac{nRT_2}{P} = \frac{T_1}{T_2}\\\\15L / V_2 = \frac{330K}{450K} = \frac{11}{15}\\\\V_2 = 15L \cdot \frac{15}{11} = 20.(45)L[/tex]

Bloc ate 1 craft craft had 3 crafts. How much crafts are there?

Answers

If he had 3 and then ate 1 them that would mean that he has 2 crafts left

If yeast is given more sugar will they undergo more
cellular respiration than yeast that is given less sugar?

Answers

Answer:

True

Explanation:

Cellular respiration is a metabolic pathway that allows cells to take apart food molecules and use their atoms as an energy source. This pathway takes electrons from food molecules and transfers them to oxygen, has energy transferred to ATP and arranges molecules into water, carbon dioxide and waste.

A student suggests that the colorless liquid collected in the U‐tube is water.
Describe how to test the colorless liquid to show it contains water.

Answers

Answer:

How would you confirm that a colourless liquid given to you is pure water? A very easy solution is to take a sample of the colourless liquid and put it on the stove if it starts boiling exactly at 100 ºC then it is pure water. Any other colourless liquid such as vinegar always has a different boiling point.

(12) Magnesium metal burns very brightly to produce heat and a white solid.
What type of chemical reaction is taking place?
An endothermic
B exothermic
C reduction
D thermal decomposition

Answers

Answer:

exothermic

Explanation:

heat/energy is released when it burns.

Which best describes the products of a
chemical equation?
A. Chemicals before the reaction starts
B. Chemicals after the reaction ends
C. Chemicals on the left of the arrow
D. Chemicals on the right of the arrow

Answers

Answer:

b?

Explanation:

Chemicals after the reaction ends during chemical equation. Therefore, the correct option is option B among all the given options.

What is chemical equation?

In chemistry, you will frequently come across a chemical equation. It is a textual depiction of the procedure that takes place throughout a chemical reaction using numbers and symbols.

The reactants are placed on the left side of such an arrow in a chemical equation, while the reaction's products are placed on the right. Though certain equations may imply equilibrium with the reaction occurring in both directions simultaneously, the tip of the arrow normally heads toward the right or product side of the equation. Chemicals after the reaction ends during chemical equation.

Therefore, the correct option is option B.

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Compare the drops of wax that harden in hot water and Cold water.

Answers

Answer: They are are simular because when the wax cools down its not hot  or it cools down it is the same with hot water it cools after along while.

Explanation:

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What is the true purpose of the 2nd Amendment? suppose you have taken out a $125,000 fully-amortizing fixed rate mortgage loan that has a term of 15 years and an interest rate of 6%. after your first mortgage payment, how much of the original loan balance is remaining? The following histogram shows the number of items sold at a grocery store at various prices:Histogram titled Items Sold with Price Range on the x axis and Number of Items Sold on the y axis. Bar 1 is 0 to 2 dollars and 50 cents and has a height of 2. Bar 2 is 2 dollars and 51 cents to 5 dollars and has a height of 4. Bar 3 is 5 dollars and 1 cent to 7 dollars and 50 cents and has a height of 0. Bar 4 is 7 dollars and 51 cents to 10 dollars and has a height of 1.Which of the following data sets is represented in the histogram? {0.50, 2.00, 2.52, 3.37, 4.53, 5.00, 8.99} {2, 4, 0, 1} {2.50, 2.51, 5.00, 5.01, 7.50, 9.00, 10.00} {0.50, 2.50, 2.50, 5.00, 5.00, 5.00, 7.51} Sectionalim became prevalent not only between the North and South, but the Wet a well. Explain how the purchae of the Louiiana Territory and wetern expanion contributed to increaed ectionalim in the United State. Do we till have ectionalim in the US today? Give example and explain your anwer. What is the main purpose of a political action committee PAC )? How many bonds can chlorine make? a new security system has a price-tag of $8,000, but should save your company $3,600 each year for the next 10 years in reduced thefts. what is the profitability index of the security system? use a discount rate of 10.7%. analyze how the courts should balance the need for order and safety in society with the ideal of free expression Can a clam live without its shell? What kind of claim is made with whole grains? green, cpa, was engaged to audit the financial statements of essex co. after its fiscal year had ended. the timing of green's appointment and the start of fieldwork made confirmation of accounts receivable by direct communication with the customers not feasible. however, green applied other procedures and was satisfied as to the reasonableness of the account balances. green's auditors' report most likely contained a(n) What is the genotypic ratio if a heterozygous yellow seed YY and homozygous green seed YY are crossed? (a) The equation for the complete combustion of butane is given below. Insert themissing volumes.2CH(g) + 130(g) 8CO(g) + 10HO(g)volume of gas/cm list two ways in which the film version departs from the play. (what is different?)midnight summer dream when bottom turns into a donkey which of the following statements best predicts the effect of increasing the concentration of substrate (ethyl alcohol), while keeping the concentration of the inhibitor (methyl alcohol) constant? What does Wilson want to happen to Germany? What is the formula of cutoff wavelength? A top-down strategic plan generally takes place in which type of organization? How do you find holes and asymptotes? Timothy is planning the pricing strategy for his companys products. He is directed by the management to add a premium (amount added to the actual market price of a product) to the price of their product. How can Timothy justify this premium price to the customer without making them feel cheated?