In order to perform an experiment, a chemist needs an element that has similar properties of sodium (Na) but has a lower atomic mass. Which element should the chemist select for the experiment?
A. Rubidium (Rb)
B. Potassium (K)
C. Lithium (Li)
D. Calcium (Ca)

Answers

Answer 1
D calcium I looked it up
Answer 2
D. Calcium learned this last year lol

Related Questions

One organism benefits while another is unaffected. This statement best describes _____________________.



Commensalism

Mutualism


Parasitism

Answers

Answer:

Hello There!!

Explanation:

The answer is=>Commensalism.

hope this helps,have a great day!!

~Pinky~

Commensalism hope this helps

Which of the following examples BEST describes the life characteristic of movement?
Human skin and lungs release carbon dioxide.
The oak tree takes in water and minerals for food.
The starfish cells divide and multiply to increase its size.
A cheetah races across the plain.

Answers

Last one a cheetah races

The statement that best describes the life characteristic of movement is human skin and lungs release carbon dioxide.

What do you understand by movement?

Movement is an action of moving of any thing from one part or place to another part.

Life characteristic of the movement is shown by the human skin and lungs as skin opens and closes their pores time to time for the removal of gases and lungs also contracts and expands for the conversion of oxygen into carbon dioxide.

Hence, human skin and lungs release carbon dioxide is the life characteristic of movement.

To know more about movement, visit the below link:
https://brainly.com/question/12234

#SPJ2

How is the King Midas story related to chemistry?

Answers

Answer:

After conducting further archaeological research on the tomb, Rose concluded the clothing on Midas was treated with a chemical. The chemical made the clothing look golden, and he hypothesized this is why Midas is known as the king with the golden touch.

Explanation:

this has nothing to do with the question but real quick I've just got to say this...      

JUST BECAUSE FORTNITE HAS A SKIN ON IT DOES NOT MEAN FORTNITE MADE IT!

Any one can you help me with this from 8 to 10 all plz HURRY TO ME

Answers

I’ll get back to u on this

Answer:

its not clear i would help u but i can't see it correctly

Explanation:

A person’s genotype is pp. p=five fingers. What is this person’s phenotype?

Answers

Answer:

25

Explanation:

5×5 =25

no link need right answer

Answers

Answer:

cutting down the rainforest destroys the habitat for a number of species

Explanation:

please mark this answer as brainlest

D. no guaranteed....

Helppp!!!
Plants use energy from sunlight, water, and carbon dioxide to produce sugar. Which structure is found only in plant cells and helps plants capture energy from sunlight?

A) Vacuole
B) Nucleus
C) Chloroplast
D) Cell Membrane

Answers

Answer:

c

Explanation:

Answer:

C

Explanation:

Chloroplast helps plants capture energy from sunlight, so it is C.

Jennifer and Cody are mixing substances during a lab experiment. They observe the four effects listed below. Which of these effects indicates that a chemical reaction has taken place between two substances?

A pink powdered substance turns water pink when they are mixed together.

A piece of shiny metal begins to bubble when placed in a clear liquid.

A white solid disappears when mixed with water.

A clear, lemon-scented liquid continues to smell like lemon when it is mixed with water.

Answers

Answer:

number 2

Explanation:

What is the literal meaning of the term "Binomial Nomenclature?" What taxonomic levels are included in a scientific name? Why is it beneficial to use the scientific name of an organism?
PLS HELP UNIT TEST SCIENCE

Answers

Answer:

Binomial nomenclature definition is - a system of nomenclature in which each species of animal or plant receives a name of two terms of which the first identifies the genus

Explanation:

Why is it beneficial to use the scientific name of an organism? The binomial nomenclature has a number of advantages over using the common names.

What taxonomic levels are included in a scientific name? The Taxonomic levels, are a way of classifying species. In taxonomy, there are eight levels: domain, kingdom, phylum, class, order, genus and species.

whos good at the periodic table cus im not help

Answers

the answer should be C. 35
Yep it’s 35.45 aka Chlorine. So C

Students in an art class are assigned to make a miniature animal sculpture using materials of their own choice. Students who choose copper and aluminum as the materials for their sculpture will have no difficulty bending the materials into different shapes and angles. However, students who choose wood as sculpting materials will find that the food must be cut, glued, and sanded to form different shapes because it is lacking in -

A. Conductivity
B. Luster
C. Malleability
D. Ductility

Answers

C. Malleability

can i get brainiest?

i think it would be C. Malleability

Which of the following is an example of the characteristic of movement?
1 The kitten shivers like she’s cold.
2 The moss on the rock is active even though it looks still.
3 Animal kidneys produce urine.
4 Nutrients provide living organisms with energy to manage other life processes.
PLZZZ DO NOT PUT LINK TO ANSWER

Answers

A. The kitten shivers like she’s cold

those link share ppl are SOOOOOO ANNOYING

10 points!!! PLEASE HELP I WILL GIVE BRAINLIEST TO CORRECT ANSWER WITH EXPLANATION!
The table below shows two types of electromagnetic waves and three random applications of electromagnetic waves.

Type of Wave Applications of Wave
X-rays 1. Show the heat released by astronomical objects
Ultraviolet rays 2. Study stars having high temperature
3. Detect collection of gas, dust, and plasma

Which of these best matches the waves with their applications?

Select one:
a. X-rays—2 and ultraviolet rays—3
b. X-rays—3 and ultraviolet rays—2
c. X-rays—1 and ultraviolet rays—2
d. X-rays—2 and ultraviolet rays—1

Answers

Answer:Answer is C

Explanation:

Answer:

C

Explanation:

When a plant bends to get more sunlight, which of these characteristics of life is it. A demonstrating?
B respiration
C reproduction
D sensitivity
E excretion

Answers

Not A not D, pretty sure not E, I don’t think it’s B so I think it’s C. Hope this is correct
The answer is c hope that helps

Pls help me with this question!!

Answers

Maybe it’s c I’m not sure

Answer: A

Explanation:

Respiration occurs in humans when an egg cell from a female combines with a sperm cell from a male. True or false?
true
false

Answers

[tex] \huge \bold \pink{Question}[/tex]

Respiration occurs in humans when an egg cell from a female combines with a sperm cell from a male. True or false?

[tex] \huge \bold \pink{Answer}[/tex]

False

Answer:

im pretty sure its false, i think its Fertilisation that occurs

Explanation:

what do ammonium ion, and hydroxide ions make if put together

Answers

Answer:

They would form an ionic compound. Ammonium Hydroxide or (NH_4)(OH).  

Explanation:

The underscore represents a superscript.

I'm not sure what the answer is but i think it's F please tell me kf i'm right or not.

Answers

Answer:

I think it might be 'F'

Explanation:

Because lobsters do eat snails so try 'f'

2C4H10 + 13O2 --> 8CO2 + 10H2O

Which is true about the reaction shown above?

The reaction has two elements that combine to form a compound.

The reaction releases energy.

The reaction is a single replacement.

The reaction has negative ions in two of the compounds that switch places.

Answers

this is the combustion reaction of butane which releases energy

no link need right answer

Answers

Explanation:

Advantage of coal

1) It is easy to burn.

Disadvantages of coal

1) The use of coal releases sulfur dioxide ,a harmful substance linked to acid rain.

Advantage of natural gas

1)Natural gas is nonrenewable resource.

Disadvantages of natural gas

1)Natural gas is toxic.

Advantage of nuclear

1)Nuclear energy is reliable.

Disadvantages of nuclear

1)It also has one of the smallest carbon footprints.

Advantage of hydroelectric

1)Hydroelectric energy the most commonly used renewable energy source in the world.

Disadvantages of hydroelectric

1)It is expensive.

Advantage of petroleum

1)It is a high density fuel.

Disadvantages of petroleum

1)petroleum is thick and flammable which is why it make such efficient resource for fuel .

Advantage of solar wind

1) It will give us cold air.

Disadvantages of solar wind

1)A lot of electricity bill.

Amniotic egg is an egg that contains a f fluid-filled nucleus and a yolk sac

True or False
PLS HELP THIS IS FROM A UNIT TEST
science 30 points pls help

Answers

So for that one I’m going to go with True
the answer for this is TRUE

Which word is used to describe a flow of electrons through a conductor?
a discharge
a spark
an electron flow
a current

Answers

Electric current is flow of electrons in a conductor. The force required to make current flow through a conductor is called voltage and potential is the other term of voltage.

Answer:

an electron flow !

Explanation:

an electron flow is the flow of electrons in a conductor. The force required to make current flow through a conductor is called voltage and potential is the other term of voltage.

You were rushing to get to school on time and dropped your breakfast food! Choose one atom in that food item and explain the story of how it got there in the first place and what happened to it next, if no human picks it up and it remains in the environment.
Follow your atom through at least one plant, one animal, and one decomposer.
There are possibly multiple paths your atom can take, but you only need to choose one for your story.
Explain how your atom gets from one point to the next.
You can use evidence from your notebook to help you tell your story.
You can use words and pictures to tell your story.



and dont just put a random answer

Answers

Answer:

I am going to chose your apple on your breakfast plate. Somebody plantes the apple seed. The apple tree takes time to grow. Once the apples are ready to be picked they are picked. Then the apples are sorted and go off to different schools like your school. Which is where you pick the apple up and put it on your plate.

Explanation:

The ___ of this mineral is conchoidal; its breakage resembles the ripples of a mussel shell.

Answers

Answer:

Conchoidal Fracture

Explanation:

PLZ HELP! WILL GIVE BRAINLIEST, 5 STARS, AND A THANKS!!
What are the similarities between "boiling" and "condensation"?
**Explain your thinking below using quotes from the text.**
~You will get reported if you answer with something else~

Answers

they occur at the same temperature.
the correct answer is boiling point and condensation point both are temperatures during which state of matter changes




hope it helps

PLZ HELP! WILL GIVE BRAINLIEST, 5 STARS AND A THANKS!!
What is the relationship between "freezing point" and "melting point"?
**Explain your thinking below using quotes from the text.**
~You will get reported if you answer with something else~

Answers

Answer:

The freezing point of a substance is the same as that substance's melting point. At this particular temperature, the substance can exist as either a solid or a liquid. At temperatures below the freezing/ melting point, the substance is a solid.

Explanation:

edge 2021

Answer: The relationship between freezing point and melting point is that freezing point is at the temperature of when a liquid freezes and melting point is at the temperature when a solid melts which are both at the same temperature

Some quotes from the text to support this is that: "Freezing point is the temperature at which a liquid freezes and melting point is the temperature at which a solid melts.

Okay So Blink your eyes. Was work done? Explain your answer.
I don't need you telling me this isn't a real question also I need this kind of work so please don't put anything that isn't useful for my assignment .


In physics, work is defined as a force causing the movement—or displacement—of an object. In the case of a constant force, work is the scalar product of the force acting on an object and the displacement caused by that force. Though both force and displacement are vector quantities, work has no direction due to the nature of a scalar product (or dot product) in vector mathematics. This definition is consistent with the proper definition because a constant force integrates to merely the product of the force and distance.

Answers

Answer:

no work was needed. Blinking does not require using energy sometimes we blink without thinking.

Explanation:

Answer:

Yes work was done because muscles in your body contract and relax to make you move and blink. To just smile you use 32 or 36 muscles. The simplest movements are also sometimes to most complex.

Explanation:

20 points and brainiest if you answer in 5 mins with the right answer
How does a convex mirror form an image?
A) It bends the light toward a focal point.
B) It bends the light away from a focal point.
C) It bounces the light toward a focal point.
D) It bounces the light away from a focal point.

Answers

B) it bends the light away from a focal point

Imagine that scientists have found a planet with an outer layer divided into plates made of hard, solid rock, but the mantle below the plates is made of hard, solid rock instead of soft, solid rock as it is on Earth.

Do you think plate motion would take place on that planet? Why or why not?

Answers

No because the way the plates move is because earth has soft rock under the surface

The layer of planets is made of crust, mantle, and core. The tectonic plate motion on the newly found planet will not occur as it has a hard and solid mantle.

What are tectonic plates?

Tectonic plates are defined as sold rocks that make up the mantle layer of the lithosphere of the planet. They are massive and irregular in shape that can move under high pressure and temperature conditions to form mountains and landscapes.

The plate tectonic of the planet is composed of hard, solid rock that will not be able to move or solid like that of Earth as they are hard enough to show the movement of sliding over each other unlike the soft, solid rock of Earth's lithosphere.

Therefore, the plate tectonic of the planet with hard, solid rocks will not show any movements.

Learn more about tectonic plates, here:

https://brainly.com/question/28259981

#SPJ2

The author of Space Systems: All About Eclipses makes the point that seeing a total solar eclipse is rare. How does the author use evidence to support this point?
A. The author describes how often, on average, a solar eclipse happens in the same spot on earth]
B. The author shows what happens during a lunar eclipse.
C. The author provides a visual that shows how often total solar eclipses happen
D. The author states that lunar eclipses happen at night.

Answers

Answer:

C is the correct answer I think

Other Questions
1. Market demand is given by P = 500 - 4Q. The monopolist who serves the market has MR = 500 - 8Q and its MC = Q + 50. Its ATC = .5Q + 50.a. If the monopolist could perfectly price discriminate, what would be its producer surplus?2. In a perfectly competitive market, market demand is P = 200 - 5Q and market supply is P = Q + 8. Each identical firm has MC = 10Q and ATC = 5Q.a. In equilibrium, how much will each firm produce?b. Suppose that minimum average total cost is $5. How many firms will there be in long run equilibrium?c. If this market were served instead by a monopoly with MR = 200 - 10Q, what would be the deadweight loss compared to perfect competition?(Please give an explanation so I can understand how to answer the questions). What nominal interest rate should you be looking for if you wantto turn $800 into $1000 in two years? Assume it is compoundingmonthly. Round your answer, as a percentage, to two decimalplaces.(b) as an auditor would you be more likely to find risk in supplier groups with large total amounts and large number of orders or large total amounts and small number of orders? why? Use Fermat's little theorem to find 82035 mod 17 noah is baking a two-layer cake, in which the bottom layer is a circle and the top layer is a triangle. segment ab = 10 inches and arc ab arc ac, what does noah know about the top layer of his cake? there are ten teams in a high school baseball league. how many different orders of finish are possible for the first If 66 2/3% of 2400 employees favored a new insurance program, how many employees favored the new insurance program? All of the following are possible characteristics of a monopoly except:A) there is a single firm.B) the firm is a price taker.C) the firm produces a unique product.D) the existence of some advertising Which best describes the poet's attitude in the last two lines of the stanza? A. sarcastic. B. disruptive. C. indecisive. D. determined. D. determined. Book Value of Fixed AssetsCannington, Inc., designs, manufactures, and markets personal computers and related software. The following information was taken from a recent annual report of Cannington industries:Property, Plant, and Equipment:Current YearPreceding YearLand and buildings$682,240$395,699Machinery, equipment, and internal-use software648,128511,680Office furniture and equipment102,33688,691Other fixed assets related to leases825,510620,838Accumulated depreciation and amortization866,445723,174a. Compute the book value of the fixed assets for the current year and the preceding year.Current year book value$Preceding year book value$b. Would you normally expect the book value of fixed assets to increase or decrease during the year?Fixed Asset Turnover RatioMaster's Communications is a telecommunications company. Master's balance sheet disclosed the following information regarding fixed assets:Year 2(in millions)Year 1(in millions)Plant, property, and equipment$228,400$217,997Less accumulated depreciation137,404130,095$90,996$87,902Master's revenue for Year 2 was $116,284 million. Assume the fixed asset turnover for the telecommunications industry averages approximately 1.32.a. Determine Master's fixed asset turnover ratio for Year 2. Round to two decimal places. (1-3) P7-L04 1-Present the Difference financial reporting principles and international differences for international companies. -Different Financial Reporting Principles and international differences The Federal Insurance Contributions Act requires employers to withhold FICA taxes from employees' earnings. Which of the following is/are true regarding FICA?a.Medicare provides disability benefits.b.The tax rate for both Social Security and Medicare is 6.2% on maximum earnings of $110,100.c.Social Security provides pensions and health insurance benefits.d.FICA taxes include amounts for both Social Security and Medicare programs. Red Star Restaurants Chain owns and operates a variety of casual dining restaurants in three cities: Tail includes four restaurants, each built in early 2003. The Madinah division consists of three restaurants, each Al-Madinah, and Makkah. Each geographical market is considered a separate division. The Taf division built in 2009. The Makkah division is the newest, consisting of three restaurants built 5 years ago and mostly operate as takeaway units. In the past, division managers were evaluated on the basis of ROI and then residual income (RI). The CEO is concerned that the focus on annual ROI could have an adverse long-run effect on the branches and the group's performance, in particular, it might cause managers to ignore emerging threats and opportunities The Group's management accountant recently has suggested to top management that the economic value added (EVA) approach might be a viable alternative for evaluating the performance of divisions. All divisions are assumed to face similar risks. Data for 2021follow Taif Revenues $4,200.000 Variable costs 1,650,000 Fixed costs 1.230,000 Operating income 1,320,000 Interest costs on long-term 368,000 debt at 8% Income before income taxes 952,000 (30%) Net income after tax $666,400 Al-Madinah $4,580.000 1.680,000 1,500,000 1,400,000 416,000 Makkah $3,330,000 1,005,000 930,000 1,395,000 440.000 Total $12,110,000 4,335,000 3,660,000 4,115,000 1,224,000 984,000 955,000 2,891,000 $ 688.800 $668,500 $2,023,700 Net book value at 2019 year-end: Current assets Long-term assets Total assets $1,330,000 4,925,000 6,255,000 $900.000 5,512.000 6,412,000 $650.000 6,885,000 7,535,000 $2.880,000 17,322,000 20,202,000 Current liabilities Long-term debt Stockholders' equity Total liabilities and stockholders' equity $380,000 4,650,000 1,225,000 6,255,000 $315,000 5,250,000 847,000 6,412,000 $134,000 5,550,000 1,851,000 7,535,000 $ 829,000 15,450,000 3,923,000 20,202,000 $4,750,000 2,500,000 $5,350,000 2,750,000 $5,800,000 2.650.000 $15,900,000 7.900.000 12% 10% Market value of debt Market value of equity Cost of equity capital Required rate of return Accumulated depreciation on long-term assets $2,200,000 $1,510,000 $220,000 Required: 1. Use the DuPont method of profitability analysis to evaluate the performance of the three Red Star divisions for the year 2020. Use the 2020 net book value of total assets as the investment base. Show your calculations and comment on the results UUSI TUFOOT 2. Comment on the potential strengths and weaknesses of using the DuPont method of profitability for measuring divisional performance at Red Star Restaurants What factors affecting ROI does the DuPont method of profitability analysis highlight? 3. Calculate the residual income (RI) for each of the three divisions using operating income as a measure of income and the net book value of total assets as the measure of investment. Commer on the differences of results of measurement of the DuPont method of profitability and RI Refer back to the original data. Calculate the WACC for Red Star Restaurants Chain 5. Refer back to the original data Calculate the EVA for each of the hotel branches, using netbook value of long-term assets. Use your preceding calculations to comment on the relative performance of each division 6. Why might Red Star Restaurants want to use EVA instead of RI for evaluating the performance of the three divisions? Convert 7% EAR to an APR with monthly compounding: 1 0.0723 (express as a decimal (not a percent) with 4 digits after the decimal) Answers 1-1 1. 0.0723 When a supply and demand model is used to analyze the market for labor,a. demand is generally no longer downward sloping. b. the wage rate is used on the vertical axis as the market price. c. employment is used on the horizontal axis as the market quantity. d. both b and c. find a basis for the eigenspace corresponding to each listed eigenvalue. A = [ 1 0 -1 ][ 1 -3 0 ][ 4 -13 1], = -2 adolescents require fewer hours of physical activity than adults. please select the best answer from the choices provided. TRUE/FALSE Suppose that you've budgeted $250 per month for a new car, but the salesperson goes into sales mode and talks you into one with a few extra snazzy features. Next thing you know, you have a car payment of $265 per month. Find the actual change and the relative change needed for our cur payment budget to accommodate our impulsive decision to go with the fancy car 8. If the total of all payments for the original budgeted amount is $12,000, how much extra would you end up paying for the snuzzy features? Do you think that would be worth it? Which agency or agencies oversee investigations of alleged research misconduct? A. Food and Drug Administration B. National Institutes of Health C. Office of Research Integrity D. Center for Drug Evaluation and Research E. All of the above Which of the following statements regarding triacylglycerols is not true? a. They are solid if they do not have alkene bonds. b. They are soluble in water. c. They are liquid if they have alkene bonds. d. They undergo alkaline hydrolysis to yield soaps.e. Some can be hydrogenated.