Use the information given to calculate the average atomic mass of element Z. Z- 56 is 70% abundant and Z-59 is 30% abundant.​

Answers

Answer 1

Answer:

56.9 amu

Explanation:

Depending on the number of isotopes an element has, the Average atomic mass of isotopes of an element can be calculated using:

(atomic mass of isotope1 × decimal abundance of isotope1) + (atomic mass of isotope2 × decimal abundance of isotope2)

According to this question, two isotopes of element Z were given

- Isotope Z- 56 with atomic mass 56 is 70% abundance. This means that its decimal abundance is 0.70

- Isotope Z- 59 with atomic mass 59 is 30% abundance. This means that its decimal abundance is 0.30

Therefore, average atomic mass of element Z is:

= (56 × 0.70) + (59 × 0.30)

= (39.2) + (17.7)

= 56.9


Related Questions

need a top pick for another slide to talk about crystals

Answers

Answer:

tigers eyes

Explanation:

During which phase of the moon do neap tides occur?

A: full

B: gibbous

C: new

D: quarter

Plz I need help I think it’s A plz tell me before time runs out

Answers

The answer is A!!!!!!!!!!!!!!!

IT IS NOT A

the full moon is incorrect I just don know the right answer sorry

when water changes state from a liquid to a solid is energy absorbed or lost?

Answers

Answer:

Loses

Explanation:

liquid changes into solid, heat is released. The energy released upon freezing, known as the enthalpy of fusion, is a latent heat, and is exactly the same as the energy required to melt the same amount of the solid.

Answer:

Matter either loses or absorbs energy when it changes from one state to another. For example, when matter changes from a liquid to a solid, it loses energy. The opposite happens when matter changes from a solid to a liquid. For a solid to change to a liquid, matter must absorb energy from its surroundings.

Explanation:

Which element would be the least similar to magnesium

Answers

Answer:

Chemistry Q&A Library decide which element probably forms a compound with chlorine that has a chemical formula most and least similar to the chemical formula of the compound formed by chlorine and magnesium most and least similar to magnesium:strontium,rubidium,phosphorus, cesium

Explanation:

hope this helped ❤✨

Yup listen to the person above

Which of the following occurs when a liquid becomes a gas

Answers

Answer:

Boiling occurs when a liquid changes to a gas below its surface as well as at the surface. The temperature at which a liquid boils is called its boiling point. The opposite of vaporization is called condensation. Sublimation occurs when the surface particles of a solid gain enough energy that they form a gas.Boiling occurs when a liquid changes to a gas below its surface as well as at the surface. The temperature at which a liquid boils is called its boiling point. The opposite of vaporization is called condensation. Sublimation occurs when the surface particles of a solid gain enough energy that they form a gas.Boiling occurs when a liquid changes to a gas below its surface as well as at the surface. The temperature at which a liquid boils is called its boiling point. The opposite of vaporization is called condensation. Sublimation occurs when the surface particles of a solid gain enough energy that they form a gas.Boiling occurs when a liquid changes to a gas below its surface as well as at the surface. The temperature at which a liquid boils is called its boiling point. The opposite of vaporization is called condensation. Sublimation occurs when the surface particles of a solid gain enough energy that they form a gas.

During a change in state, energy is transferred in the form of
heat

light

moisture

motion

Answers

Answer:

heat I think.....

Hope it will help you......

During a change in state, energy is transferred in the form of heat.

Hence, Option (A) is correct.

What is States of matter ?

When energy is added or removed to matter in the form of heat, it changes state to form a state of matter.

A state of matter is defined as one of the ways in which matter can interact with itself to form a homogeneous phase.

Therefore , During a change in state, energy is transferred in the form

of heat. Hence, Option (A) is correct.

Learn more about States of matter here ;

https://brainly.com/question/9402776

#SPJ2

How can we gather more evidence about weather lava or water formed the channel on Mars

Answers

you can do that by scientific studies

Science investigation skills

(I need to have 5 answers )


Answer 1.

Predict



Answer 2.

Use variable


Answer 3.

Plan and conduct investigations

Answer 4.
Draw conclusions


Answer 5.

Hypothesize


Answer 6.

Measure


Answer 7.

Classify and order




Answer 8.

Record and display data


Answer 9.

Use time and space relationships




Answer 10.

Use numbers

Answers

Answer:

Explanation:

-------Choices  ---------------

Predict

Use variable

Plan and conduct investigations

Hypothesize

Measure

Classify and order

Record and display data

Use time and space relationships

Use numbers

=================

Selection:

These are in approximate order:

Hypothesize:  Build an explanation of the observation.  The hypothesis should be done after a thorough review of existing information.  Library database searches and researcher interviews are suggested.Predict:  prediction of what would happen if the explanation were correct.  E.g., If an atom is homogenous and has no internal structure, then bombarding it with with neutrons will result in most neutrons going right through the atom, and none would be reflected backwards.

Plan and conduct investigations:  Design experiments that test the hypothesis.  E.g., see if any neutrons are reflected backwards.  If they are, the hypothesis needs to be changed.

Measure:  Do the work.  Calibrate the equipment and record everything.

Record and display data:  Publish the results and conclusions for peer review.  Seek other's input in order to generate general agreement that the data, procedure, and conclusions are warranted.

===

Use numbers?  Nah.  Not if they are not required to reach a conclusion.(e.g., the precipitate will be pink or the reaction will stink).

Use Time and Space Relationships:  Yes, but only if the hypothesis depends on them.

Classify and Order:  OK, especially if you are a biologist, but not always necessary.

Use variable:  usually, but what and how depends on the experiment.

Blame:  Place blame on the lab partner (Just kidding).

Which statement best describes a physical change?

Changes can occur to certain chemical properties of the substance, but the overall shape of the substance will remain the same.
Changes can occur to certain physical properties of the substance, but the overall shape of the substance will remain the same.
Changes can occur to physical properties of a substance, but the chemical composition of the substance remains the same.
Changes can occur to chemical properties of a substance, but the chemical composition of the substance remains the same.

Answers

Answer:

Changes can occur to physical properties of a substance, but the chemical composition of the substance remains the same.

Explanation:

Answer:

Changes can occur to physical properties of a substance, but the chemical composition of the substance remains the same.

Explanation:

im smart

Gases ___ out and fill their container completely

Answers

Answer: Gases have the lowest density of the three, are highly compressible, and completely fill any container in which they are placed. Gases behave this way because their intermolecular forces are relatively weak, so their molecules are constantly moving independently of the other molecules present. Solids, in contrast, are relatively dense, rigid, and incompressible because their intermolecular forces are so strong that the molecules are essentially locked in place.

Explanation:

Put the following scientists in order of their discoveries: 1. Dalton, 2. Bohr, 3. Rutherford, 4. Democritus, 5. Thomson
Please help me I really need the answer

Answers

democritus, dalton, thomson, rutherford, bohr

Which statement is not
true?
A. Protons are positive and neutrons are
neutral
B. Electrons have the most mass of the
subatomic particles
C. Protons and Neutrons are found in the
nucleus
Electrons are found outside the nucleus
and have a negative charge

Answers

Answer:

B. Electrons have the most mass of the

subatomic particles

Compared to the mass of neutron and proton, mass of electron is negligible.

Answer:

B

Explanation:

when creating a Bohr model, you will usually mark protons + or P and neutrons are usually 0 or N.

Electrons are on the rings surrounding the nucleus, but everything else is inside.

Electrons are typically represented by - or E

What is the freezing point on this graph?

Answers

Answer:

Point a becuse it is the closest to -5*

Explanation:

Answer:

-5

Explanation:

Negative numbers get you confused.

- = Negative

5 = Number

You know 5 right?

I I I I I - 5

5 is a really less number already.

If you add a negative it will be double small.

Now lets figure out the problem:

What is the freezing point on this graph?

-5 is the smallest number

5 is bigger than -5

15 is bigger than 5 and -5

25 is bigger than all the numbers.

I know what your thinking. 25 is totally not the answer. Its the biggest number. Freezing is a very low number. What number is the lowest out of -5, 5, 15, 25. You see -5.

Therefore, -5 is freezing.

BE FIRST TO ANSWER PLEASEEE ASAP! :D

Answers

Answer:

I want to say E or B

Explanation:

HELPP
A monatomic ion always have one unit of charge. (+1 or -1) on the species

true or false

Answers

Answer:

No, this is invalid. The term mono in front of monoatomic simply refers to the number of atoms that are present in a compound or simply by itself it has no relationship with respect to the overall charge of the compound.

Explanation:

For instance Ca is considered as a monoatomic ion but it has a charge of +2.

Explain the law of conservation of mass.

Answers

Answer:

The law of conservation of mass or principle of mass conservation states that for any system closed to all transfers of matter and energy, the mass of the system must remain constant over time, as the system's mass cannot change, so quantity can neither be added nor be removed.

Explanation:

Your answer should be- that in a chemical reaction mass is neither created nor destroyed.

Explanation:

Is that good?

Explain why the gamma rays do not bend.

Answers

they are electrically neutral, they are not deflected by magnetic fields

the human eye has three types of cones cells. damage to any one of the types of cone cells doesn't cause total blindness because of the
A. presence of rod cells
B. other two functional Cone cells
C. presence of optic nerves

Answers

they have rod cells - this helps them be able to see colors through a spectrrum located in the retina

What is the correct lewis dot structure for
24
12Mg 2+?

Answers

Answer:

Mg with 2 dots

Explanation:

Mg: as the valnce shell of Mg has 2 electrons only

presented by 2 dots

40POINTS AND BRAINLIEST Discuss the orders in which electrons are filled in the s and d subshells of the first three elements in group11​

Answers

Step 1: add electrons to fill the 1s subshell (maximum of 2 electrons), when this is full, go to step 2. Step 2: add electrons to fill the 2s subshell (maximum of 2 electrons), when this is full, go to step 3. Step 3: add electrons to fill the 2p subshell (maximum of 6 electrons), when this is full, go to step 4. Step 4: add electrons to fill the 3s subshell (maximum of 2 electrons), when this is full, go to step 5. Step 5: add electrons to fill the 3p subshell (maximum of 6 electrons), when this is full, go to step 6. Step 6: add electrons to the 4s subshell (maximum of 2 electrons), when this is full, go to step 7. Step 7: add electrons to the 3d subshell (maximum of 10 electrons), when this is full, go to step 8. Step 8: add electrons to the 4p subshell (maximum of 6 electrons), when this is full, go to step 9. etc

So for Cu would be: 1s^22s^22p^63s^23p^63d^9

Ag would be: 1s^22s^22p^63s^23p^63d^104s^24p^64d^105s^1

Au would be: 1s^22s^22p^63s^23p^63d^104s^24p^64d^105s^25p^64f^145d^106s^1

Why does a planet stay in orbit?

Answers

Answer:

Gravity

Explanation:

A planet is gravitationally pulled around the sun.

Answer:

beause of gravitys pull and because the atmosphere of the beyond lol also bcs this i hope this helps your welcome boo >3

Explanation:

Newton realized that the reason the planets orbit the Sun is related to why objects fall to Earth when we drop them. The Sun's gravity pulls on the planets, just as Earth's gravity pulls down anything that is not held up by some other force and keeps you and me on the ground.

name the gas formed when metals react with dilute hcl​

Answers

Answer:

im maybe 80% sure it's hydrogen gas

Answer:

When a metal reacts with dilute hydrochloric acid, it forms a metal chloride salt and hydrogen gas.

Which changes involve forming or breaking chemical bonds?

A.burning and digesting

B.boiling and melting

C.burning and melting

D.rusting and cutting

Answers

Answer:

d

Explanation:

i took the test

How can you tell if an element is a metal or a nonmetal??

Answers

Answer:

Elements to the left of the line are considered metals. Elements just to the right of the line exhibit properties of both metals and nonmetals and are termed metalloids or semimetals. Elements to the far right of the periodic table are nonmetals. The exception is hydrogen (H), the first element on the periodic table.

Explanation:

Answer:

looking at its metallic luster

Explanation:

Elements may be classified as either metals or nonmetals based on their properties. Much of the time, you can tell an element is a metal simply by looking at its metallic luster, but this isn't the only distinction between these two general groups of elements. Most elements are metals.

Does Magnesium or Carbon have similar properties to Beryllium ? Which one ?

Answers

Answer:

Yes, Magnesium

Magnesium has similar properties

Question 1
Why can't wee see atoms?

Answers

Answer:

They're too small

Explanation:

Atoms are smaller than the wavelength of visible light

Answer:

too small

Explanation:

PLS HELP!!! ASAP!! 10 POINTS!!

Which of the subatomic particles are most responsible for the identity of an element?

neutrons
electrons
atoms
protons

Answers

Protons

Protons are the subatomic particle that determines the identity of an element.

Answer:

Explanation:Protons and neutrons are located in the nucleus of an atom and determine the mass of an atom. Protons have a positive electrical charge and electrons have a negative electrical charge. Atoms that have the same number of protons and electrons do not have an electrical charge.

NH3 is a _______________

Answers

Answer:

compound

Explanation:

Answer:

your answer would be compound

The distance of the Kentucky Derby, a classic horse race, is 1.25 miles. How is this distance expressed in furlongs ?

Answers

So to convert from miles to furlongs you need to multiply by 8 so you do
1.25 x 8
Which is 10 furlongs

HELP ME THIS IS DUE TODAY PLEAS HELP SO I DONT FAIL

Answers

For the first one it’s 69 just count the little lines from the side.
Other Questions
why virus is imortal? A truck drives 80 km in 2 hours. The truck stops for 1 hr and continues driving for 100km in 2.5 hrs. What was the truck's average speed for the entire trip? (round to theneared 10th As a student, how can we avoid fake news or fake information? In this letter, Hamilton seems to be what The greatest comen factor of 21, 30,49 according to "the writing on the wall" which of the following factors made it difficult for people to find the poems on the walls of angel island There were 3 boys for every 4 girls in the group. If there were 20 girls, how many students in all went on the field trip? any one ? Which elements would readers likely find in an American gothic story? Check the four best answers.a tone of dread or dark forebodinga rational understanding of eventssuspensean appeal to emotioneerie sights and soundsa belief in the innate goodness of human nature Determine the x-intercept of theequation below. Write your answer asan ordered pair.-3x + 5y = 15 Although a small amount of ATP has been formed in the Krebs cycle, it is the _______________ molecules that represent the most energy for the cell.Question 9 options:NADHFADH2ATPBoth A and B 6.333 x 10^2HHHEEEEELLLLLLLPPPPP! A customer told the restaurant manager that the salad tastes too sour, so he asked the chef to examine the recipe. The quantities of whichIngredient should the chef adjust?The label of the dressing reads "Chef's Special Salad DressingIngredients:Olive oilMinced garlicSalt & pepperCider vinegarFinely chopped onion Please Help Me =(Let f(x) = 7x + 9. Suppose you add 2 to the input of f to create a new function g, then multiply the output of function g by 3 to create function h. What are the slope and y-intercept of the graph of function h?slope = ? y-intercept = ? Someone pls answer I will give branliest to either the first or the best answer Always thinking about food, Scooby-Doo and his crew went out to eat. Their total bill was about $82. If the group wanted to leave a 20% tip, how much will the tip cost? (Can you also show your work?) 6th grade reading I mark as brainliest zoom in if needed Use the Slope Formula to find the slope of the line with points (1,-4) and (-3,3) convert 8.51 into a fraction Pls help! I dont get this, 7th grade math, Lesson 8 Unit 2 Which statement is true of the electric field at a distance from the source charge?A it is independent of the source charge B It is directly proportional to the source chargeC it is inversely proportional to the source charge D it is directly proportional to the distance