8Li
8 Be
0e
What type of radioactive decay is this?

Answers

Answer 1

Answer:

emitted i think  

Explanation:

To determine the type of radiation (alpha, beta or gamma), first determine the background count rate, then the source count rate with no absorber. Next, place a sheet of paper between the source and the monitor. If the counts are significantly reduced, the source emits alpha particles.

Answer 2

Answer:

Plasma Levels of IL-8 and TGF-β1 Predict Radiation-Induced Lung Toxicity in Non-Small Cell Lung Cancer: A Validation Study

Explanation: got it from sources


Related Questions

name one state of matter

Answers

Answer:

solid

Explanation:

Answer:

Gas

Explanation:

What happens when you touch two hot bowls made of different materials? The wooden and metal bowl are both at the same temperature and HOTTER than your finger. Compare the direction and speed of the heat arrows for the wooden and metal bowl. Explain WHY and what affects HOW the arrows move from the wooden and metal bowl to the finger.

Answers

Answer:

Explanation:

Both metal and wooden bowls are at the same temperature . But wood is non-conductor of heat whereas metal is conductor of heat .

If we touch the wooden bowl , heat flows from hot to cold object . Since the finger is at higher temperature , heat flows from finger to wooden bowl . But , since wood is non conducting , it does not allow heat to be conducted through it . Hence very less heat will be conducted from our finger .

On the other hand , if we touch a metal bowl , heat flows from finger to the metal bowl , without any hinderance . Hence rate  of heat flow will be fast in case of metal bowl . As a result of it , we feel cool in touching metal bowl . This feeling will be absent in case of wooden bowl.

A hypothetical element has two main isotopes with mass numbers of 59 and 62. If 73.00% of the isotopes have a mass number of 59 amu, what atomic weight should be listed on the periodic table for this element? Answer in units of amu.

Answers

since 73% of the isotope is given, take 100%-73% to get the remaining % of the isotopes which is going to be 27%.

hence,

atomic weight= (73×59) + (27×62)

=4307+1302

=5609 amu

Write down the answer. Make sure to use the correct number of sig figs or
spots after the decimal. 987.22 - 377.1*

Answers

Answer:

610.1

Explanation:

When we add or subtract the values, the number of significant figures after decimal in result must be equal to the given measurement having less number of decimal places.

In given values 377.1 has only decimal place thus in result after decimal there should be one digit only.

987.22 - 377.1 = 610.1

When we multiply or divide the values the number of significant figures must be equal to the less number of significant figures in given value.

Now we will calculate the difference between 7.69 and 4.0.

7.69 - 4.0 = 3.69

In given values 4.0 have less number of significant figures thus result must have only two significant figures . So we would round the result.

3.7

Pls help me here, thanks in advance

Answers

Answer:

What's the problem???

an object sitting on the floor can have potential energy true or false

Answers

Answer:

True

Explanation

Any object that's still, has potential energy

Answer:

True

Explanation:

it just depends on an object's weight and its height above the ground

Which of the following is measured in Newtons?
Mass
Acceleration
Weight
Momentum

Answers

Mass is a newtons and it will not be weight because it’s mass

Answer:

Mass is measured in kg

Acceleration is measured in m/s^2

Weight is measured in Newtons

Momentum is measured in kg/m^2

Why are atoms neutral?
A They have neutrons in the nucleus
B. They have the same number of protons and electrons
They tend to have 8 valence electrons
D
None of the above

Answers

Answer:

B. They have the same number of protons and electrons

Explanation:

Protons have a charge of +1, electrons have a charge of -1, and neutrons have no charge, making them neutral. When there are the same number of protons as there are electrons, the charges balance out, leaving you with a neutral atom.

ALL OF THESE ARE FORMS OF MIXTURES EXECPT...

A. ALLOYS
B. NEON
C. COLLOIDS
D. SOLUTIONS

Answers

Answer:

B. NEON.

HOPE IT HELPED

An increase in which of the following would increase the boiling point of a
liquid?

Answers

Answer:

The boiling point increases with increased pressure up to the critical point, where the gas and liquid properties become identical.

You are standing at position X. Choose the diagram that shows your position when you perceive a sound lower than the actual pitch of the siren.

Answers

Answer:

The answer is the second picture.

Explanation:

When you perceive a sound lower than its actual pitch, then you must have been further from the actual position.

What is pitch of a sound?

The pitch of a sound is a perceptual property of sounds that allows sound of similar frequencies to be distinguished.

Pitch is the quality of sound, that makes it possible to judge sounds as "higher" and "lower" in the sense associated with musical notes.

Thus, when you perceive a sound lower than its actual pitch, then you must have been further from the actual position.

Learn more about pitch of sound here: https://brainly.com/question/61859

#SPJ2

Calculate the average atomic mass of unknown element X. You determine that isotope 127X makes up 80%, isotope 126X makes up 17%, and isotope 128X makes up 3%.

A. 127.10 amu
B. 126.86 amu
C. 127.54 amu
D. 126.20 amu

Answers

Answer:

Option B. 126.68 amu

Explanation:

The following data were obtained from the question:

Isotope A (¹²⁷X):

Mass of A = 127

Abundance (A%) = 80%

Isotope B (¹²⁶X):

Mass of B = 126

Abundance (B%) = 17%

Isotope C (¹²⁸X):

Mass of C = 128

Abundance (C%) = 3%

Average atomic mass of element X =.?

Th4 average atomic mass of X can be obtained as follow:

Average atomic mass = [(Mass of A × A%)/100] + [(Mass of B × B%)/100] + [(Mass of C × C%)/100]

= [(127 × 80)/100] + [(126 × 17)/100] + [(128 × 3)/100]

= 101.6 + 21.42 + 3.84

= 126.68 amu

Therefore, the average atomic mass of X is 126.68 amu

Which element is an inner transition metal?


uranium (U)

osmium (Os)

radium (Ra)

hafnium (Hf)

Answers

Answer:

Os

Explanation:

Atoms of different element can not have same atomic number because only same type of atoms combine to form element. Atoms belonging to different element can have different atomic number. Therefore, the correct option is option A.

What is element?

Element generally consist of atoms or we can atoms combine to form element. Atoms of an element is always same, means all the properties of all atoms of one type of element is same. Two or more than two atoms with different physical or chemical properties can not combine together to form an element.

Among all the given options, uranium (U) is an inner transition metal. Inner transition metal are the metals that belongs to f block of periodic table as their last electron goes into f subshell.

Therefore, the correct option is option A.

To know more about element, here:

https://brainly.com/question/8460633

#SPJ2

what is potiential and kinetic engergy? pls someone answer my question

Answers

Answer:

Potential Energy is stored energy or energy of position (gravitational). The object isn't moving. For example, a ball being held is potential energy because the object isn't moving but it has the potential of turning into kinetic energy.

Kinetic Energy is the energy of motion. For example, running. You are moving, and there is clear action and activity

Energy stored in an object due to its position is Potiential energy . Energy that is moving object has due to its motion is Kinetic energy .

What’s science in science

Answers

Answer:

Science is the pursuit and application of knowledge and understanding of the natural and social world following a systematic methodology based on evidence. Scientific methodology includes the following: Objective observation: Measurement and data (possibly although not necessarily using mathematics as a tool)

Explanation:

Answer:

Modern science is typically divided into three major branches that consist of the natural sciences (e.g., biology, chemistry, and physics), which study nature in the broadest sense; the social sciences (e.g., economics, psychology, and sociology), which study individuals and societies; and the formal sciences

Please help!!

What colors do acids and bases turn litmus paper?

Answers

Answer:

acid turns blue litmus red and base turns red litmus blue

Answer:

turns red or pink if it is acid and turns green if it is a base

Explanation:

litmus paper is blue

An atom is the simplest substance known and provides the building block from which all matter is composed.
True or false

Answers

It is true but jejdjdjenbebebrjrjjrbbr

On July 4, 2020, America turned 7.69 x 10^9
seconds old. On that day, how old was America
in years? (Assume 365 days in a year)

Answers

America's age = 243.85 years

Further explanation

When converting units, list and multiply all the units until you find the unit you want

Time unit conversion

1 year = 365 days

1 day = 24 hours

1 hour = 3600 s

7.69 x 10⁹ seconds to years :

[tex]\tt =7.69\times 10^9~s\times \dfrac{1`hour}{3600~s}\times \dfrac{1~day}{24~hours}\times \dfrac{1~years}{365~days}\\\\=\dfrac{7.69\times 10^9}{3600\times 24\times 365}\\\\=\boxed{\bold{243.85~years}}[/tex]

In Ionic compounds the charges of the cation and anion should cancel out.

True
False

Answers

true i looked it up

describe the purpose of using a chemical equation.

Answers

Answer:

The purpose of using a chemical equation is to keep track of elements and the number of atoms of each of the elements on each side of the equation. ... They use symbols and formulas to show the chemical reaction so that chemical names do not need to be written out.

Answer:

:0

Explanation:

Sample Response: Chemical equations show how chemicals interact when a reaction occurs. They use symbols and formulas to show the chemical reaction so that chemical names do not need to be written out. They also help keep track of all elements and the number of atoms of each element on each side of the equation.

which order system shows the levels of organization from largest to smallest

organism, organ system cell organ tissue
organism tissue organ system organ cell
organism organ organ system cell tissue
organism organ system organ tissue cell

Answers

Answer:

cell → tissue → organ → organ system → organism

Explanation:

Answer:

The correct answer is cell → tissue → organ → organ system → organism.

Explanation:

I know this because I am smart

How long will it take for 500.0g of radium decay to 2.0g

Answers

Therefore, the elapsed time must be triple the length of one half-life. 24.33=8.10 , so it is 8.10 hours.

Plz help! :) :D I will mark you as BRAINLIEST for the best answer!!! ( I actually mean it)
Physical and Chemical Properties of Magnesium

Here is an EXAMPLE of how it has to be like. Instead of Mercury, you HAVE to do Magnesium

Physical Properties of Mercury: ”I’m a highly stable element, so you can count on me”

Chemical Properties of Mercury: ”I love to travel but I do corrode aluminum so we won’t be flying off on adventures in airplanes planes anytime soon”

Answers

huuuuuuh??
explanation

The electron configuration of an element is 1s^ 2 2s^ 2 2p^ 2 How many valence electrons does the clement have? (1 point )

Answers

Answer:

:)

Explanation:

Question 5

1 pts

Chloroethene,C2H3C1, reacts with oxygen according to the equation below.

2 C2H2Cl (9) + 5O2(g) + 4CO2 (g) + 2 H20 g) + 2 HCl (9)

What is the amount, in mol, of H2O produced when 10.0 mol of C2H3Cl and 10.0 mol of

O2 are mixed together, and the above reaction goes to completion?

08.00

10.0

04.00

20.0

Lo

Answers

Answer:

4.00 moles of water

Explanation:

The equation of the reaction is:

2 C2H2Cl (9) + 5O2(g) -------> 4CO2 (g) + 2 H20( g) + 2 HCl(g)

To find the limiting reactant,  we find the species that yields the lowest number of moles of water.

From the reaction equation;

2 moles of C2H2Cl  yields 2 moles of water

10 moles of C2H2Cl  yields 10 * 2/2 = 10 moles of water

Similarly;

5 moles of oxygen yields 2 moles of water

10 moles of oxygen will yield 10 *2/5 =4 moles of water

Hence oxygen is the limiting reactant.

10 moles of oxygen yields 4 moles of water.

4
The element bromine at room temperature is a liquid with a density of 3.12 g/nl.
Calculate the mass (wanted measurement) of 125 mL (given measurement) of bromine.
(use the given density as the conversion factor to calculate the wanted measurement).
Sign out

Answers

Given : Density of Bromine = 3.12 g/mL
Formula : Density = Mass / Volume

Part A :
Given Volume = 125 mL
Density = Mass / Volume
So, Mass = Density x Volume
= 3.12 x 125
= 390 grams

Part B :
Given mass = 85.0 gm
Density = Mass / Volume
So, Volume = Mass / Density
= 85 / 3.12
= 27.24 mL

3. Two boxes need to be moved. Box A is 10 kg. Box B is 3 kg. Which box will 1 point
require more force to move?
BOXA
BOX

Answers

Answer:

box A

Explanation:

10 is bigger than 3 since 10 is bigger it has more force in it

Two reasons photosynthesis is important

Answers

Answer:

Gives us oxygen to live, and if produces products such as, rubber, timber, herbs, and medicines.

It maintains the concentration of atmospheric carbon dioxide and oxygen.

2)To make food from sunlight carbon dioxide and water

What tectonic plate boundary caused the formation of Mount Fuji?

Answers

Answer:

the Amurian plate, the  the Okhotsk plate, and the Filipino plate all converge in the region beneath Mount Fuji.

Explanation:

Please choose the best description, or definition of Faunal Succession.

principle stating that specific groups of organisms lived and died within a specific

time frame due to the ice age

principle stating that specific groups of fawns lived in a specific region and are

found in the rocks shoing fawns onl live in specific areas.

principle stating that specific layers of the earth have contain fauna of different

types showing biodiversity.

rinciple stating that specific groups of organisms have followed, or succeeded.

one another in a definite sequence through Earth history

Answers

Answer:

Principle stating that specific groups of organisms have followed, or succeeded one another in a definite sequence through Earth history

Explanation:

Principle stating that specific groups of organisms have followed, or succeeded one another in a definite sequence through Earth history describe Faunal succession because it is a principle that indicate that fossil plants and animals succeed each other in a sequential manner even if they occur in different places. Successive strata and faunas are linked together to form composite section in the Earth's history.

Answer:

the last one

Explanation:

Other Questions
Which of the following functions best describes this graph 8. Write down the definition for the term "cross section ? write a letter to your friend in another town deceiving not less than four interesting things in you home 4x12 -8 Anyone know I need help Two elements in the same period have the same number of _____ _____ in their electron clouds. Question 2 (1 point)Identify which of the following situations does not representcausation:ObKryptonite causes Superman to lose all his powers.Temperatures of less than 32F cause water to freeze.Umbrellas cause rainstorms.Stepping on the gas pedal causes a car to move faster.OdNext PageOnce you click Next Page you will not be able to change your answerType here to searche-) In the following sentence the verb is a (verb phrase or single word)Her flowers are blooming now. I NEED HELP WITH THIS A metal block, 2.0cm x 2.5cm x 3.0cm, has a mass of 40.5g. What is the density of the sample? What type of metal is the metal block composed of? Aluminum - 2.699Copper - 8.92Iron - 7.874Lead - 11.43Nickel - 8.908Tin - 7.265Zinc - 7.14 2. Solve in two ways1/2 +1/4 can you help me with this question I need the answers,please. When the midpoints of a polygon with 14 sides are joined by the mid-segments, the resulting inscribed polygon will have how many sides? What if you inscribed another polygon inside the second polygon? How many sides would this new polygon have? Which of these is an example of an Anti-Federalist position? A. The Constitution places too much power in the central government. B. The national government should be broken into three different branches. C. The state governments should not be able to pass their own laws. D. The president should have power over the laws passed in Congress. While the Legislative Branch is charged with writing the laws and the Executive Branch with enforcing the laws, it is left to the Judicial Branch to do which of the selections listed below? Select one: A. Enact the laws B. Argue in favor of the laws C. Interpret the laws D. Constrict the laws How many valence electrons does carbon have? Is this atom satisfied? Explain. 5. A factory produces 24532 bulbs in a month. What is its annualproduction? 1) List the necessary components of an introduction paragraph, in the correct order in which they should be presented.2) List the necessary components of a body paragraph, in the correct order in which they should be presented. the act of training for a particular joba. paleolithic ageb. technologyc. domesticate d. neolithic agee. specialization 100 POINTS!!!!!!!!!!! ( I NEED FAST ANSWERS ) Evaluate the function, find f(-2):f(x) = 2x2 + 3x-2-142-10 The state that we now call __________ was ceded by Spain to the United States as a result of the Adams-Ons Treaty.a.Texasb.Louisianac.Mississippid.Florida