Chemistry High School

Make the following conversion.

60 dkm = _____ km

6,000
0.060
60,000
0.60

Answers

Answer 1

Answer:

0.6

Explanation:

Related Questions

Metal oxides are in which state?

Answers

Answer:

Metal oxides are crystalline solids that contain a metal cation and an oxide anion. They typically react with water to form bases or with acids to form salts.

Explanation:

Hope this helps!

What is the difference between the chemical symbols CI and Cl2?

Answers

Cl refer to chlorine atoms. They don't exist naturally in that form. Rather, Cl2 refer to chlorine molecules, and they exist as that form in nature.

If you have 1.26 x 1024 molecules, how many moles do you have?

Answers

Answer:

2.09 moles

Explanation:

1 mole=6.022*10^23 moles --> 1.26×10^(24)/(6.022*10^23)=2.09 moles

Will give 50 points, If a decrease in temperature accompanies a reaction, what occurred?


Energy was released.


Energy was destroyed.


Energy was created.


Energy was absorbed.

Answers

Answer:

A.

Explanation:

Answer: Energy is Being absorbed

Calculate the mass in grams of carbon dioxide produced from 11.2 g of octane (C8H18) in the reaction above.

18 + 25 O2 --> 16 CO2 + 18 H2O


89.6 g
17.3 g
34.5 g
46.2 g

Answers

Answer:

34.6g

Explanation:

Given parameters:

Mass of Octane  = 11.2g

  Reaction expression;

      2C₈H₁₈  + 25O₂  →  16CO₂  + 18H₂O

Mass of octane = 11.2g

Unknown:

Mass of carbon dioxide produced  = ?

Solution:

From the balanced reaction equation;

         2 mole of octane produced 16 moles of carbon dioxide

From the given specie, let us find the number of moles;

    Number of moles  = [tex]\frac{mass}{molar mass}[/tex]  

 Molar mass of C₈H₁₈   = 8(12) + 18(1) = 114g/mole

Number of moles of octane  = [tex]\frac{11.2}{114}[/tex]   = 0.098mole

   

    2 mole of octane produced 16 moles of carbon dioxide

    0.098 mole of octane will produce [tex]\frac{0.098 x 16}{2}[/tex]   = 0.79mole of CO₂

Mass of CO₂ = number of moles x molar mass

           Molar mass of CO₂ = 12 + 2(16)  = 44g/mol

Mass of CO₂  = 0.79 x 44  = 34.6g

I have similar chemical and physical properties to calcium but my molecular mass is lower, what element am I?
-Potassium
-Scandium
-Magnesium
-Strontium

Answers

Potassium is the answer

HELP ME PLEASE!!

Density (D) is defined by mass/volume .

Which item increases as heat is applied?

D
m
V

Answers

Answer:

volume

Explanation:

things expand when heat is applied taking up more space hence volume

The melting point of table salt is 801.Is this a physical or chemical property

Answers

Physical property
Physical properties include density, harness, color, melting and boiling points

Answer:

Physical

Explanation:

When something melts it is still the same substance.

For example:

Ice and water are still both water, so that would be a physical change.

If a reaction changes the substance into a new/different substance then it is a chemical change.

Please help me with this question. What are two elements that will react similarly to beryllium ?

Answers

Probably the two elements with properties most like beryllium are magnesium and aluminum.

According to the electronic configuration elements that will react similarly to beryllium  are magnesium and calcium.

What is electronic configuration?

Electronic configuration is defined as the distribution of electrons which are present in an atom or molecule in atomic or molecular orbitals.It describes how each electron moves independently in an orbital.

Knowledge of electronic configuration is necessary for understanding the structure of periodic table.It helps in understanding the chemical properties of elements.

Elements undergo chemical reactions in order to achieve stability. Main group elements obey the octet rule in their electronic configuration while the transition elements follow the 18 electron rule. Noble elements have valence shell complete in ground state and hence are said to be stable.

Learn more about electronic configuration,here:

https://brainly.com/question/29757010

#SPJ6

What describes using organisms that were only alive during a specific time period to estimate the unknown age of items

A radioactive dating
B law of superposition
C relative dating
D index fossil

Answers

Answer:

c i just took the test

Explanation:

What factors do you think should be considered in selecting a metal to use to reclaim copper? Which factor do you think is the most important? Explain.

Answers

Answer:

Aluminum

Explanation:

Aluminum would be the best choice to reuse  copper from the copper chloride solution because it  In the aluminum–copper reaction, the chloride ions help remove the aluminum oxide coating so that a reaction can take place through the oxidation of aluminum and the reduction of copper ions.The aluminum–copper chloride reaction is a simplified version of a waste reclamation and reduction strategy for handling toxic-waste materials.

Over 30 species of dinosaur fossils with feathers have been discovered. Therefore, birds evolved from dinosaurs.

A.) Claim
B.) Evidence
C.) Reasoning

Answers

The awnser is C because if it was a claim it would be proven with facts and if it were evidence it would also be proven with facts

how many atoms are there in a 1 mol sample of water

Answers

Answer:

Explanation:

1 molecule has 2 hydrogens and 1 oxygen. That's 3 atoms.

1 mol of anything is 6.02 * 10^23 items. There are 3 atoms in 1 molecule

There are 6.02*10^23 * 3 atoms in a mol of water

Answer: 1.804 * 10^24 atoms in a mol of water.

Using your knowledge of symbols, determine which compound listed must contain both copper and oxygen.

1. malachite, Cu 2CO 3(OH) 2
2. calcite, CaCO 3
3. glucose, C 6H 12O 6
4. chalcopyrite, CuFeS 2

Answers

Answer:

The correct option is Malachite which has both copper nd oxygen.

Explanation:

As we the symbol of copper is Cu while the symbols of oxygen is O. As the chemical formula of malachite is Cu₂CO₃(OH)₂. So it has Cu as well as O.

Glucose has only oxygen but no copper

Chalcopyrite has copper but no oxygen

Calcite has oxygen but no copper.

So correct answer is only malachite.

pls give brainlist

HELP AND ILL PUT U ON BRAINLIEST ! -THANKS

Answers

Answer:

2Fe₂O₃

Explanation:

If the number of atoms of each element are the same on reactant and product sides, it is a balanced equation. This is not a balanced equation because the number of atoms of each element are not the same on reactant and product sides.

To balance an equation, let's first list the atoms:

FeO

Then, we count the number of atoms on both sides:

1 Fe 22 O 3

We multiply the number of atoms for each element on either side by the number of molecules (aka coefficient, or "big number"):

4 Fe 26 O 3

To balance the equation, we need the total number for Fe on the right side to be 4, and the total number for O on the right side to be 6. We can do that by adding a "big number", or coefficient in front, which when multiplied by the number of atoms for each element, makes a balanced equation.

2 is a good value: 2 × 2 = 4, and 2 × 3 = 6.

As such:

4Fe + 3O₂ → 2Fe₂O₃

Other Questions
What is the work done in lifting 60 kg of blocks to a height of 20 m estimate 2,072-581 by first rounding each number to the nearest hundred Analizeaz predicatele nominale din urmtoarele fragmente din nuvela Popa Tanda, dup modelul de mai jos."Toate sau schimbat; nu mai printele Trandafir a rmas verde, vesel i harnic."model: a ajuns pop predicat nominal, alctuit din verbul copulativ a ajunge, modul indicativ, timpul perfect compus, persoana a IIIa, numrul singular + numele predicativ pop, exprimat prin substantiv comun, simplu, genul masculin, numrul singular, cazul nominativ, nearticulat PART A: Which statement best expresses the central idea of the article?A. The Chicano Movement was well-intentioned but failed to have any lastingimpact.B. The Chicano Movement negatively impacted the progress of the AfricanAmerican Civil Rights Movement.C. The Chicano Movement successfully gained rights for Mexican Americans andpaved the way for future progress.D. While the Chicano Movement did help migrant workers, it failed to address theneeds of students who were being treated unfairly how do you get a 15 year old girl to like you when you're 13 and how to tell 8f they'll like you Please Help!crivons/Parlons Rponds aux questions d'aprs tes habitudespersonnelles. Utilise le pronom y dans tes rponses.1. Est-ce que ta famille fait ses courses au supermarch?2. Est-ce que tu aimes aller au supermarch avec ta famille?3. Qu'est-ce que vous achetez souvent au supermarch?4. Est-ce que tu vas souvent au march?5. Qu'est-ce qu'on peut acheter au march aux tats-Unis Which scientist established the law of octaves?Antoine LavoisierDmitri MendeleevHenry MoseleyJohn Newlands Alicia received the following seven scores on her math assignments.80, 90, 10, 75, 90, 95, 99Find the mean and median. Which measure of center best represents the data? commence means to:A(say out loud for the purpose of recordingB(obtainC(count againD(set in motion, cause to start Offsprings take on traits of their parents from? Out of magnesium, iron, calcium, mercury, copper, or aluminum which metal would be the most useful when transporting acids or water solutions? PLEASE HELP!!! Thank you Help plz:))) Ill mark u brainliest ASAP!!! The inner and outer surfaces of a cell membrane carry a negative and positive charge, respectively. Because of these charges, a potential difference of about 70 mV exists across the membrane. The thickness of the membrane is 8 nm. A) If the membrane were empty (filled with air), what would be the magnitude of the electric field inside the membrane? (Assume that this field would be constant in magnitude). B) If the dielectric constant of the membrane is K = 3, what would the field be inside the membrane?3) Cells can carry ions across a membrane against the field ("uphill") using a variety of active transport mechanisms. One mechanism does so by using up some of the cell's stored energy (converting ATP to ADP, for those who remember their biochemistry). How much work does it take to carry one sodium ion (charge = +e) across the membrane against the field? PERIODIC TABLE TEST WILL GIVE BRAINLIEST!Helium is a gas found in the earth.A.TrueB.FalseNeon is a gas from the earth. *A.TrueB.FalseElements are pure substances. *A.TrueB.FalseFamilies/Groups on The Periodic Table go in this direction. *A.verticalB.horizontalRows which are called _______ run horizontal on The Periodic Table. *A.pecansB.periodsC.perfectClick all that apply. Matter is found in ____________. *A.clothingB.humansC.plantsD.carsThe worlds most accurate clock is a _____________. *A.TimexB.RolexC.AtomicHumans are made of 99% elements. *A.TrueB.FalseA grain of sand is the same size as one atom. *A.trueB.falseThe Periodic Table has _______ elements. *A.112B.116C.96 Read this sentence: A disruption of the federal union, heretofore only menaced, is now formidably attempted. What is meant by a disruption of the federal union in this sentence Sentence one: Tell your patient what he or she needs to do first. Remember:Use one affirmative formal command.Use one body part.Sentence two: Tell your patient what he or she cannot do. Remember:Use one negative formal command.Use one body part.Sentence three: Give your patient advice to keep him or her from getting worse. Remember:Use one negative formal command.Use the correct form of the verb doler.Use one body part.Sentence four: Tell your patient how to take care of himself or herself while at home. Remember:Use one affirmative formal command.Sentence five: Tell your patient what happened. Remember:Use one preterite tense verb.this is my answer but I don't know if my answer is correct:Hola Kayla necesito que me digas en que parte de la pierna te duele. No puedes hacer ejercicio por un mes porque te causara dolor. Necesito que tengas cuidado cuando subas escaleras y si puedes siempre ten alguien contigo. Si te caste, necesitas a descansar. Where does stage two of cellular respiration take place?MitochondriaCytoplasmChloroplastNucleus A sample of 5.0 g of hydrogen gas reacts with 5.0 g of oxygen gas.2H2(g) + O2(g) > 2H2OPlease answer the questions in a b c d and e, or at least in any of the ones you know. Thank you. Harry was given an assignment. He had 42 days to get 336 tasks done at work.Which operation would he use to figure out how many tasks he needs to complete each day? Read the excerpt from A Black Hole Is NOT a Hole by Carolyn Cinami DeCristofano.Einstein's idea of gravity had big consequences. It helped explain some observations that Newton's idea didn't account for. It also opened our minds to amazing new possibilities. For example, taking his cue from Einstein's idea that space bends, scientist Karl Schwarzschild began to think about what would happen if a place in space were extremely distorted. His answer: light would follow the hyper-bent space, never to turn away from it. This was the first prediction of a black hole. At first, some scientists (including Einstein!) rejected Schwarzschild's ideas. Others were intrigued and began searching the skies for real black holes. Just decades later, they found the first of them. It just goes to show: sometimes, as Einstein himself once said, "Imagination is more important than knowledge."Which is an objective statement about the excerpt?Einstein was a more enlightened thinker than Isaac Newton.Einsteins ideas about gravity affected the way scientists viewed space.Karl Schwarzschild could never have succeeded without Einsteins assistance.Karl Schwarzschilds predictions were the most impressive scientific thinking in history.