How many meters are in 21.5 km?

Answers

Answer 1

Answer:

21500m

Explanation:

Answer 2

Answer:

21, 500 meters

Explanation:

There are 1000 meters in a kilometer. Muliply 21.5 x 1000 to find this.

Hope it helps!


Related Questions

Name the most abundant compound found in air?

Answers

Answer:

The two most abundant compounds in air are the gases carbon dioxide, CO2, and water vapor, H2O

Answer:

Nitrogen

Explanation:

Nitrogen is the most abundant compound found in the air. It accounts for about 78% of the air that we breath. It is closely followed by oxygen that accounts for about 21% of the air.

Please answer correctly nobody answers questions like this on brainly. BTW ITS STEM.



Which of the following choices describes an accurate relationship?


Descriptive research typically follows from explanatory research

Experimental research may lead to understanding descriptive research

Case study research typically follows from descriptive research

Observational research may lead to understanding explanatory research

Answers

Answer:

I believe your answer is B. Experimental research may lead to understanding descriptive research.

Generally, experimental research is a trial and error method that tests the hypothesis of descriptive research. Descriptive research being the theoretical or studied characters of a topic.

Please let me know if I had this wrong, and I'll do some extra research for you.

2. Calculate the number of moles of propane you have in 5.78 x1024 molecules of propane = CH

Answers

Answer:

Molar mass of C3H8 = C 3 (12.01 g/mol) = 36.03 (g/mol)

H 8 (1.008 g/mol) = 8.064 (g/mol)

44.09 (g/mol)

74.6 g propane x 1 mole propane x 6.022 x 10

23

molecules

44.09 g propane 1 mole propane

= 1.02 x 10

24 molecules propane

Explanation:

What mantle is forced down and begins to melt?


HELP!

Answers

Answer:

magma

Explanation:

Answer:

magma rises through it.

Explanation:

Has 3 valence electrons and 4 energy levels ?

Answers

You are looking for an element in the fourth period and a transition metal. As most have about 3 valence electrons. Gallium and Scandium work perfectly.

Answer:

Gallium is the Answer.

Explanation:

What is the process where plants make seeds that grow into new plants

Answers

This Process is called fertilization

Answer:

Plant fertilization

Explanation:

Hope this helps:) Have a great day

Please give Brainliest if could

what is mean by constituent assembly​

Answers

It’s a body or assembly of popularly elected representatives which is assembled for the purpose of drafting or adopting a constitution or similar document.

Answer:

its a body or assembly of popular elected represenatives

Explanation:

which the purpose of this is to form a representative democracy

hope this helps

When she placed her hand on the side of the container, it felt really cold, but it didn't feel that way before. The temperature had dropped by about 30 degrees Celsius. The substance was now grey and crystallin in structure.
Was this a chemical reaction?
Answer the question (in a complete sentence) Provide evidence to support your claim and describe (reasoning/justify) how the evidence supports the claim.

Answers

Answer:

this is a physical reaction

Explanation:

Answer:

this is a physical reaction

Explanation:

What kind of scientist would study the the force of a car running into a wall

A. A Chemist
B. A physicist
C. A Botanist
D. A Biologist

Answers

Answer:

B. A Physicist

Explanation:

HELLPPPPP i need to know ASAPPPPPPPP

Answers

It has to be one of the options with glucose(sugar)

what form of matter has a definite shape and takes up space?​

Answers

Answer:

If something is in a solid state of matter, it has a definite shape and volume. The volume of an object is the amount of space it occupies. A block of wood placed on a table retains its shape and volume, therefore, it is an example of a solid. If a liquid is poured on that same table, there are very different results

Explanation:

Hello

Answer:

The reliable and correct answer to this question is Solid

Explanation: If something is in a solid state of matter, it has a definite shape and volume. The volume of an object is the amount of space it occupies. A block of wood placed on a table retains its shape and volume, therefore, it is an example of a solid.

The following diagram shows a view of earth . What do the arrows represent

Answers

Answer:

how the earth rotates

Explanation:

Answer:

The Diagram shows Earth's rotation! ^^

Explanation:

Orbit and revolution is when the Earth goes around the sun and I'm sure it's not seasons because seasons isn't a movement of Earth.

This question is about energy transfers. Which is the correct definition of conduction.'
(1 Point)
Transfer of thermal energy when particles in a heated fluid rise.
Transfer of thermal energy as a wave.
Transfer of thermal energy by the vibration of particles.

Answers

The answer is 1 :)))))))))))))))))))))))

Water boils at 100°C. What is that temperature on the Kelvin scale? 333 K 213 K 373 K 325 K​

Answers

Your answer is C It’s 373 K

Answer:

I can confirm that 100 degrees Celsius is 373 degreed Kelvin

Explanation:

To be exact, 100°C = 373.15°K, but rounding down would then give us 373.

please help me need it fast ​

Answers

Answer:

Do you need 3 ways or just one?

1. Temperature.

2. Pressure.

3. Polarity.

Explanation:

Eh hope these help, Idr understand the question but those are 3 ways to increase the solubility of a solid in water.


What is the formula for nickel || dichromate

Answers

Answer: Cr2NiO7 is the molecular formula for nickel II dichromate.

Which one of the following is an incorrect orbital notation?
B. 4f
C. 2d
D. 3s
E. 2p
(no 'A')

Answers

Bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb 4f

The answer option which is an incorrect orbital notation is: C. 2d.

A sublevel refers to an energy level that is typically associated with the valence electrons found outside an atomic nucleus.

In Chemistry, there are four (4) main types of sublevel and these includes:

s orbital (sublevel): 3sp orbital (sublevel): 2pd orbital (sublevel): 3df orbital (sublevel): 4f

However, it is impossible for any atom of a chemical element to have a 2d orbital because electrons are generally located in the s and p orbitals (sublevels) in the second energy level.

Read more: https://brainly.com/question/24403297

How many moles are contained in 539.2 grams of Al(NO3)3

Answers

Answer; 2.531 moles

Explanation:

_____ grams = 9.3 kilograms

Answers

The answer is 9,300 grams!!

Answer:

9300 grams = 9.3 kilograms hope it helps

Find the mass of 11.37 mol of BaO. Round to the nearest whole number.

Answers

Answer:

1,354

Explanation:


Identify the type of reaction
CaCl2 + AgNO3 --> AgCl + Ca(NO3)2

Answers

Answer:

It is Double Replacment

Explanation:

They traded bonds.

Balanced Equation is 2AgNO3 + CaCl2 = 2 AgCl +1Ca(NO3)2

In metallic bonds, electrons are referred to as electrons.​

Answers

Answer:

Metallic bonding may be described as the sharing of free electrons among a lattice of positively charged metal ions. The structure of metallic bonds is very different from that of covalent and ionic bonds. ... In metallic bonds, the valence electrons from the s and p orbitals of the interacting metal atoms delocalize.

During spontaneous fission, a nucleus of 25498Cf can produce 11846Pd, four neutrons, and what other nuclide?

Answers

Answer: 52Te - Tellurium

Explanation: Radioactivity occurs when an unstable nucleus of an element decompose into a stable element by emitting particles or forms of eletromagnetic energy. There are types of radioactivity and Spontaneous Fission is one of them.

In Spontaneous Fission, the unstable, also called parent, nucleus splits into two smaller nuclei and emitts one or more neutrons.

The reaction spontaneous fission of Cf is represented below.

25498Cf ⇒ 11846Pd + 4n + X

The characteristics of each element of the equation are:

1) The element Cf has atomic mass 254 and atomic number 98.

2) Element Pd has atomic mass 118 and atomic number 46.

3) Neutron is represented as n, has no atomic number and atomic mass 1.

Given these properties, to determine the other nuclide, we have to find out the nuclide's atomic number, as each element in the periodic table has its own atomic number.

At the left side of the equation, atomic number is 98. At the right side, element X's atomic number is

98 - 46 + 0 = 52

In the periodic table, the element with atomic number 52 is Tellurium, whose symbol is Te.

The other nuclide for the spontaneous fission is Tellurium (Te).

Draw a physical model that shows the reaction of zinc metal and hydrochloric acid (hydrogen chloride).

Zinc + Hydrochloric Acid Zinc Chloride and Hydrogen Gas
Zn + 2HCI - ZnCl2 + H2

“Be sure to label your model to clearly show how you are representing the atoms, how they are rearranged and
that mass is conserved in the reaction.”

If anyone could maybe send me a drawing it’ll be so appreciated! God bless you all :)

Answers

Answer:

Zinc + Hydrochloric Acid Zinc Chloride and Hydrogen Gas

Zn + 2HCI - ZnCl2 + H2

Explanation:

Be sure to label your model to clearly show how you are representing the atoms

blance: Mg + HNO2 → Mg(NO2)2 + H2

Answers

Explanation:

Mg + 2HNO2 → Mg(NO2)2 + H2

Answer:

Mg + 2HNO2 → Mg(NO2)2 + H2

Explanation:

_______ mL = 500 cm^3

Answers

Answer:

500 mL

Explanation:

500 cm is equal to 500 mL

0.6 sample an unknown organic acid found in muscle cells is burned in air and found to contain 0.24g of carbon, 0.04g of hydrogen with the rest being oxygen. If the molecular weight of the substance is 90g/mol what is the emperical and molecular formula

Answers

Answer:

Molecular formula is, C₃H₆O₃

Empirical formula (with the lowest subscript) → CH₂O

Explanation:

We assume that the organic acid's mass is 0.6 g. We know that, in 0.6 g of compound we have 0.24 g of C and 0.04 g of H, then, we have

(0.6 - 0.24 - 0.04) = 0.32 g of O.

We determine each mol:

0.24 g /12 g/mol = 0.02 mol of C

0.04 g/ 1g/mol = 0.04 mol of H

0.32 g/ 16 g/mol = 0.02 mol of O

1 mol of acid weighs 90 g/mol.

In 0.6 g of acid, we have, (0.6 g / 90g/mol) = 0.0067 moles

Let's find out the formula with rules of three:

0.00667 mol of acid have 0.02 moles of C

1 mol of acid may have (0.02 /0.00667) = 3 mol of C

0.00667 mol of acid have 0.04 moles of H

1 mol of acid may have (0.04 /0.00667) =  6 mol of H

0.00667 mol of acid have 0.02 moles of O

1 mol of acid may have (0.02 /0.00667) = 3 mol of O

Molecular formula is, C₃H₆O₃

We confirm by the molar mass: 12g/mol . 3 + 6 . 1g/mol + 32g/mol . 3 = 90

Empirical formula (with the lowest subscript) → CH₂O

PLEASE PLEASE HELP ITS PAST DUE AND IM CLUELESS ILL GIVE BRAINLIEST TO THE FIRST CORRECT ANSWER

Which of the following would be the evidence of a physical change?

a. change in state of matter
b. precipitate was formed
c. unexpected change in odor
d. formation of bubbles

Answers

Answer:

[tex]\boxed {\boxed {\sf A. \ Change \ in \ state \ of \ matter}}[/tex]

Explanation:

A physical change occurs when only the physical properties change. They are generally reversible and no new substances are formed.

However, in a chemical change, the chemical structures and properties change, plus new substances are formed.

Let's analyze each answer choice.

1. Change in state of matter

The state of matter is a physical property, so this is a physical change.

2. Precipitate was formed

A precipitate is a solid formed in a liquid solution. This is a new substance and a chemical change.

3. Unexpected change in odor.

A change in odor is a sign of chemical change.

4. Formation of bubbles

Bubbles signify the formation of gas or a new substance.

So, the best answer choice is A. change in state of matter

Question:

Which of the following would be the evidence of a physical change?

a. change in state of matter

b. precipitate was formed

c. unexpected change in odor

d. formation of bubbles

Answer:

A. Change in state of matter!

Explanation:

How to know it evidence of physical change!

EXPECTED color change.Change in SIZE or SHAPE.Change in state of matter.Reversible.No NEW substance formed!

How does fog rising off water compare to plant growth?

Answers

The humidity in the air affects the evapotranspiration rate from the leaf surfaces. ... The use of fog and mist at this time can reduce the air temperature and increase the humidity within the plant canopy without saturating the plant medium. With more oxygen in the root zone, faster rooting occurs.

The humidity in the air affects the evapotranspiration rate from the leaf surfaces. ... The use of fog and mist at this time can reduce the air temperature and increase the humidity within the plant canopy without saturating the plant medium. With more oxygen in the root zone, faster rooting occurs.

What is the mass of 1.9 x 10^22 molecules of CaCO3?

Answers

Answer:

3.2 g CaCO₃

General Formulas and Concepts:

Math

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Chemistry

Atomic Structure

Reading a Periodic TableAvogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.

Stoichiometry

Using Dimensional AnalysisExplanation:

Step 1: Define

1.9 × 10²² molecules CaCO₃

Step 2: Identify Conversions

Avogadro's Number

[PT] Molar Mass of Ca - 40.08 g/mol

[PT] Molar Mass of C - 12.01 g/mol

[PT] Molar Mass of O - 16.00 g/mol

Molar Mass of CaCO₃ - 40.08 + 12.01 + 3(16.00) = 100.09 g/mol

Step 3: Convert

Set up:                              [tex]\displaystyle 1.9 \cdot 10^{22} \ molecules \ CaCO_3(\frac{1 \ mol \ CaCO_3}{6.022 \cdot 10^{23} \ molecules \ CaCO_3})(\frac{100.09 \ g \ CaCO_3}{1 \ mol \ CaCO_3})[/tex]Multiply/Divide:                                                                                                    [tex]\displaystyle 3.15794 \ g \ CaCO_3[/tex]

Step 4: Check

Follow sig fig rules and round. We are given 2 sig figs.

3.15794 g CaCO₃ ≈ 3.2 g CaCO₃

Other Questions
Describe 2 characteristics of the spring tide. * Ammonium chloride, ammonium sulfate and ammonium nitrate are used in fertilisers.Ammonia reacts with nitric acid to make ammonium nitrate.NH3 + HNO3 NH4NO3Calculate the mass of ammonia required to make 5.0 g of ammonium nitrate.relative formula mass of NH3 = 17relative formula mass of NH4NO3 = 80 In circle o, which term correctly identifies line XY?tangentB chord secantD diameter The musician Atif Aslam has agreed to visit your school for an hour and meet the students in person. Your Principal has asked you to record the preparations of his visit in the form of a report Describe one type of factor that controls cell division.Describe how damage to one of these factors can affect the cell division process.Thanks! What do you think Congress should do to address the legal status of undocumented immigrants?? Is it right or I have mistakes?. Ok so,I have a theater assignment and I don't know how to do it...I have to design a 1980's living room and I don't know what website to use. someone help me please! Keshia's restaurant bill is $27.00. She wants to leave a 15% tip. How much money will Keshia need in all What kind of tissue connects muscle to muscle? what complex sentences a clay ball with a mass of 0.35 kg hits another 0.35 kg ball at rest and the two stick together. The first balls intial speed us 4.2m/s. What are the balls final speed? A chemist prepares a solution of silver(I) perchlorate by measuring out of silver(I) perchlorate into a volumetric flask and filling the flask to the mark with water. Calculate the concentration in of the chemist's silver(I) perchlorate solution. Be sure your answer has the correct number of significant digits. Who were the record keepers of Sumerian societies? Assume that lines that appear to be tangent are tangent. O is the center of the circle. What is the value of x? Can somebody please help me with 36, 37, 38, & 39 What are the coordinates of Image A (-2,7) after a dilation with a center at the origin and a scale factor of 3? A. A prime (-5,4) B. A prime (2,-7) C. A prime (-6,21)D. A prime (1,10) Nora: I may tell you that there is something that is called,in business, quarterly interest, and another thing calledpayment in installments, and it is always so dreadfullydifficult to manage them. I have had to save a little hereand there, where I could, you understand. I have not beenable to put aside much from my housekeeping money, forTorvald must have a good table. I couldn't let my childrenbe shabbily dressed; I have felt obliged to use up all hegave me for them, the sweet little darlings!-A Doll's House,Henrik IbsenWhich lines from the passage support the inference thatNora has skills beyond her duties as a homemaker?Check all that apply."there is something that is called, in business,quarterly interest""and another thing called payment in installments"I have had to save a little here and there, where Icould""for Torvald must have a good table""the sweet darlings!" Solve for xUsing the pytheogram therom ANSWER THIS QUESTION FOR 10 POINTS AND BRAINLEST