Acid rain is caused by which of the following?
excess carbon dioxide
deforestation
nitrogen compounds in the soil
nitrogen compounds in the air

Answers

Answer 1

Answer:

nitrogen compounds in the air

Explanation:


Related Questions

10. Two primary sites for the
polio virus replication?

Answers

Answer:

the cytoplasm

protein 3b more commonly called vpg

12. Consider the system PCl3(g) + Cl2(g) PCl5(g) at equilibrium at 25°C, for which H° = –92.5kJ at 25°C. When some Cl2(g) is added at constant volume and temperature, the ratio of the partial pressure of PCl5 to the partial pressure of PCl3 wil

Answers

For a system PCl3(g) + Cl2(g) PCl5(g) at equilibrium at 25°C, for which H° = –92.5kJ at 25°C, the ratio of the partial pressure of PCl5 to the partial pressure of PCl3 is will increase

What is the ratio of the partial pressure of PCl5 to the partial pressure of PCl3?

Generally, the equation for chemiecal reaction is mathematically given as

PC3 (g) + C₁₁₂ (g) = PC15 (g) 3

Assuming the addition of some Cl2 gas. The reaction will shift to the right at the invariant volume temperature, maintaining equilibrium. This results in a rise in P9Cl5(g) and a fall in PpCl3(g).

PpCl (g) /PpCl (g) will increase

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The ratio of the partial pressure of PCl₅ to the partial pressure of PCl₃ is will increase for a system PCl₃ (g) + Cl₂ (g) --> PCl₅ (g) at equilibrium at 25°C, for which H° = –92.5kJ at 25°C when some Cl₂ (g) is added at constant volume and temperature.

What is the ratio of the partial pressure of  PCl₅ to the partial pressure of  PCl₃?

Generally, the equation for chemical reaction is mathematically given as ;

PCl₃ (g) + Cl₂ (g) --> PCl₅ (g)

Assuming the addition of some Cl₂ gas,

The reaction will shift to the right at the constant volume and temperature, maintaining equilibrium.

This results in a rise in PCl₅ (g) and a fall in PCl₃(g).

Hence, the ratio of the partial pressure of PCl₅ to the partial pressure of PCl₃ is will increases

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just need help with one question pls

Answers

Answer:

A large absorption at 2950 cm⁻¹ indicates that there is likely an sp³C-H functional group somewhere in the molecule. The "sp³" designation means that this is a single bond because these atoms have 4 orbitals available (s + p + p + p) for hybridizing, meaning only single bonds are possible.


What is the IUPAC name of the following compounds i. CO₂ ii. NO₂ iii. HNO3 iv. H₂SO4 v. K-Cr₂O vi. [Fe(CN)

Answers

Explanation:

I) carbon dioxide

ii) nitrogen dioxide

iii) nitric acid

iv) sulphric acid

v) Potassium dichromate

vi) hexacyanoferrate (III) ion( not sure)

Use Table B in your Student Guide to answer the questions about ion concentrations.
A solution with a pH = 13 has approximately how many moles of OH ions per liter?
How many moles of H* would this same solution have per liter?
(Use the decimal form of your answer.)
A different solution with an H+ concentration of 1.0 x 10-4 would have a pH =

Answers

Question 1

[tex]\text{pH}=-\log(\text{H}^{+})\\\\13=-\log(\text{H}^{+})\\ \\ \text{[H}^{+}]}=1 \times \boxed{10^{-13} \text{ moles per liter}} \\ \\ \text{[H}^{+}] \times \text{[OH}^{-}] =1 \times 10^{-14} \text{ M}\\\\\text{[OH}^{-}]=\boxed{1 \times 10^{-1} \text{ moles per liter}}[/tex]

Question 2

[tex]\text{pH}=-\log(\text{H}^{+})\\\\\text{pH}=-\log(1.0 \times 10^{-4})=\boxed{4}[/tex]

Number of molecules in .99 mol C6H5NO2

Answers

Answer:

5.96 * 10^23 molecules

Explanation:

Don't start counting up the number of CsHsNs and Os there are Counting up the atom ions will get a wrong answer.  The question is asking for the number of molecules. That means you do not break down each molecule to  find the number of molecules. You modify 1 mol to find out how many molecules are in 0.99 mols. Do that using a proportion.

1 mol contains 6.01 * 10^23 molecules

0.99 mol contains x

1/0.99 = 6.02 * 10^23 / x molecules

x = 0.99 * 6.02 * 10^23

x = 5.96 * 10^23

TUTOR Determining Molecular Weight
What is the molecular weight of Cr3(ASO4)2? amu

Answers

The molecular weight of Cr3(AsO4)2 is 433.827.

Is molecular weight the same As molar mass?

Furthermore, the primary distinction between each is that molar mass gives the mass of a mole of a selected substance. While molecular weight is the mass of a molecule of a particular substance. At an equal time as the definition and devices are splendid for molar mass and molecular weight, the value is the same.

The sum of the atomic hundreds of all atoms in a molecule is based totally on a scale wherein the atomic loads of hydrogen, carbon, nitrogen, and oxygen are 1, 12, 14, and 16, respectively.

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When 50.0 g of calcium carbonate are reacted with sufficient hydrochloric acid, how many grams of calcium chloride will be produced

Answers

Answer:

55.5g of calcium chloride is produced in the reaction.

Explanation:

To calculate the amount of calcium chloride.

The reaction of calcium carbonate with hydrochloride acid gives calcium chloride

CaCO₃ +  2HCl  →  CaCl₂  + CO₂  +  H₂O

Mass of calcium carbonate (CaCO₃)= 50.0g

Molecular mass of CaCO₃ = Ca + C + O₃

                                             = 40+ 12 + 3(16) = 100g

No of moles of calcium carbonate CaCO₃ = given mass / molecular mass

                                                                          = 50g/ 100

                                                                            = 0.5 moles

Molecular mass of calcium chloride = 40+ 2(35.5)=(40+71.0)= 111g/mol

1 mole of calcium carbonate gives = 1 mole of calcium chloride

0.5 moles of calcium carbonate gives= 0.5 × 111g/mole

                                                                = 55.5g

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hello can you please help me
define x-ray with examples and it's uses?​

Answers

Answer:

an x-ray a photographic or digital image of the internal composition of something, especially a part of the body, produced by X-rays being passed through it and being absorbed to different degrees by different materials.

examples

Abdominal x-ray.

Barium x-ray.

Bone x-ray.

Chest x-ray.

Dental x-ray.

Extremity x-ray.

Hand x-ray.

Joint x-ray.

Explanation:

its uses

An X-ray is a common imaging test that's been used for decades. It can help your doctor view the inside of your body without having to make an incision. This can help them diagnose, monitor, and treat many medical conditions.


The properties of an element depend on the electron structure within its atoms. The electrons are arranged in different
orbitals, at different energy levels and sublevels. Match each sublevel to the maximum number of electrons it can
accommodate?

Answers

S=2, p=6, d=10, and f=14 the maximum number of electrons it can

accommodate.

What are orbitals?

The probability of finding an electron around the nucleus.

The principal number (n), is the number of the shell, it goes from 1 to 7 and is represented by the letter K, L, M, N, O, P, Q. The maximum number of electrons in the shells are, K = 2, L = 8, M = 18, N = 32, O = 32, P = 18, Q =8.

The secondary number (l) is the subshells, and it goes from 0 to 4 and is represented, in order, for the letter, s, p, d, f. The maximum number of electrons permitted in each subshell is s = 2, p = 6, d = 10, f = 14.

The magnetic number (ml), is represented by orbitals, and it goes from -l to +l, passing by 0. The maximum number of electrons is 2 for each one.

The spin number (ms) refers to the rotation of the electron, and it can be +1/2 or -1/2.

Hence, S=2, p=6, d=10, and f=14 the maximum number of electrons it can

accommodate.

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PLEASEEEE HELP MEEEEE

Answers

Answer:

3.82 x 10²¹ molecules As₂O₃

Explanation:

To find the amount of molecules arsenic (III) oxide (As₂O₃), you need to (1) convert kg to lbs, then (2) convert g As₂O₃ to moles As₂O₃ (via molar mass), and then (3) convert moles to molecules (via Avogadro's number).

1 kilogram = 2.2 lb

Molar Mass (As₂O₃): 2(74.992 g/mol) + 3(15.998 g/mol)

Molar Mass (AsO): 197.978 g/mol

Avogadro's Number:

6.022 x 10²³ molecules = 1 mole

0.0146 g As₂O₃            1 kg                  189 lb
------------------------  x  ---------------  x  ------------------  x   ................
         1 kg                     2.2 lb          

       1 mole                6.022 x 10²³ molecules
x  ------------------  x  ---------------------------------------  = 3.82 x 10²¹ molecules As₂O₃
      197.978 g                        1 mole

3.82 x10^21 molecules As2O3

PLEASE HELP ASASP!!!!!!!

Answers

Answer:

B

Explanation:

I took the test

Assume that you measured exactly 2.0 mL of the sodium chloride solution into a small test tube. How many moles of
sodium chloride are in the tube?

Answers

The are about 89 miles of sodium chloride in the tube.

Help me pleaseeeeeeeee​

Answers

Answer:

Make life easy for your customers and they are more likely to come back and buy again.

Explanation:

For example, you have to hire the right talent. You don't want somebody on the job that doesn't know how to do anything.

What is the percent yield for the reaction below when
705.0 g SO2 and 80.0 g 0₂ produce 586.0 g SO3?
2SO2(g) + O2(g) → 2SO3(g)

Answers

The percent yield would be 68.3%

Percent yield

This is given as:

Percent yield = yield/theoretical yield x 100%

From the equation:

[tex]2SO_2(g) + O_2(g) -- > 2SO_3(g)[/tex]

The mole ratio of the reactants is 2;1

Mole of 705 g SO2 = 705/64 = 11.02 moles

Mole of 80 g O2 = 80/32 = 2.5 moles

O2 is limiting.

Mole ratio of O2 and SO3 = 1:2

Mole equivalent of SO3 = 2.5 x 2 = 5.0 moles

Mass of 5 moles SO3 = 5 x 80 = 400 grams

Percent yield = 400/586 = 68.3%

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Which of the following industries is leaching used in?
To separate a metal from its ore using acid and preserving desirable products such as gold.
To separate a mixture of ethanol and water
To separate a slurry containing chalk and water
None of the above.

Answers

Answer:

To separate a metal from its ore using acid and preserving desirable products such as gold.

Explanation:

please make brainiest

Which of the following alkali metal is expected to melt if the room temperature
rise to 30oc (a) Na (b) K (c) Rb (d) Cs

Answers

The answer is the first option that is Na

Which is the most likely to be reduced?
OA. Cu²+
OB. Zn²+
OC. Fe³+
OD. Fe2+

Answers

Answer:

OC. Fe³+

Explanation:

Greater reduction potential (bigger positive E value) means that things wants to get electrons. For this, you have to look at the chart that I have attached. Since, Fe3+ has highest E value out of other options, it will likely be reduced.

The species which is most likely to get reduced is Fe³⁺.

What is Reduction?

Reduction is the process of the addition of electrons and loss of oxygen atoms. It is part of redox reactions.

Redox reactions are the type of reactions in which oxidation and reduction simultaneously take place. Oxidation is the addition of oxygen atoms. Reduction is the removal of oxygen atoms.

Redox reaction can be represented as:

PbO (s) + H₂ (g) → Pb(s) + H₂O (l)

In the above reaction, PbO is getting reduced and H₂ is getting oxidized.

Fe³⁺ is most likely to get reduced because the more positive the value of reduction potential, the more will be its tendency to get reduced.

In the given four species, the value of the reduction potential of Fe³⁺ is the highest.

Values of the reduction potential of four species are:

Cu²⁺ = 0.34Zn²⁺ = - 0.76Fe³⁺ = 0.77Fe²⁺ = -0.45

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How many molecules in HNO3?

Answers

HNO3 is Hydrogen, Nitrogen and oxygen. Total number of atoms = 3+1+1=5 atoms are present in 1 molecule of HNO3.

PLEASE HELP CHEMISTRY!!!! Will give brainiest
Show work pls.

Answers

2 moles of ZnO are produced if 1 mole of Zn and 2 moles of [tex]O_2[/tex] is required.

What are moles?

A mole is defined as 6.02214076 × [tex]10^{23}[/tex] of some chemical unit, be it atoms, molecules, ions, or others. The mole is a convenient unit to use because of the great number of atoms, molecules, or others in any substance.

Balanced equation:

[tex]2 Zn + O_2[/tex] → [tex]2 ZnO[/tex]

For 2 moles of Zinc, we need 1 mol of Oxygen to produce 2 moles of Zinc oxide

For 1 mole Zn, we need 2 mol [tex]O_2[/tex] to produce 2 moles ZnO only.

Hence, 2 moles ZnO is produced.

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Fill in the coefficients that will balance the following reaction:

(Note: Use 1 as coefficient where appropriate)

Fe(HCO3)3 + CaO → Fe2O3 + Ca(HCO3)2

Answers

Answer:

2 Fe(HCO₃)₃ + 3 CaO ---> 1 Fe₂O₃ + 3 Ca(HCO₃)₂

Explanation:

The unbalanced equation:

Fe(HCO₃)₃ + CaO ---> Fe₂O₃ + Ca(HCO₃)₂

Reactants: 1 iron, 3 hydrogen, 3 carbon, 10 oxygen, 1 calcium

Products: 2 iron, 2 hydrogen, 2 carbon, 9 oxygen, 1 calcium

As you can see, the reaction is clearly unbalanced because the number of each element on both sides is different. The best way to go about balancing an equation is by trying to first balance an element located in only one molecule on either side. For example, I started trying to balance  iron. After balancing iron, I looked to balance other elements that would have been affected by the new coefficient (i.e., hydrogen, carbon).

The balanced equation:

2 Fe(HCO₃)₃ + 3 CaO ---> 1 Fe₂O₃ + 3 Ca(HCO₃)₂

Reactants: 2 iron, 6 hydrogen, 6 carbon, 21 oxygen, 3 calcium

Products: 2 iron, 6 hydrogen, 6 carbon, 21 oxygen, 3 calcium

Now, with these coefficients, the quantity of each element on both sides is the same.

examples of molecular compound

Answers

Answer:

Molecular compounds are inorganic compounds that take the form of discrete molecules. Examples include such familiar substances as water (H2O) and carbon dioxide (CO2). These compounds are very different from ionic compounds like sodium chloride (NaCl).

a specialist that study substance obtained by attained mining is called a what​

Answers

Answer:

Explanation:

Mining:

   

   

    Mining is when certain substances are removed from the Earth, usually in large quantities. Mining can occur below the surface of the Earth via tunnels and caves. It can also occur at surface level through methods such as strip mining, which removes huge amounts of soil in the process


If the earth were the size of an apple, which piece would best represent the amount of mass of the
atmosphere?
O the skin
O the meat
O the stem
O Oops..... I am sorry. I just ate the Pacific Ocean by mistake.
O a seed

Answers

The answer to the question would be the skin.

Choose the correct option.
1. A chain of small chemical units combined to form a large single unit is called ______
a) Polymer
b) Poly
c) Polythene
d) None of the above

2. Polythene and PVC are examples of
a) Bio degradable substance
b) Thermosetting plastics
c) Thermoplastics
d) Rayon

3. Plastics which when moulded once, cannot be softened by heating. Such plastics are called __ a) Polythene
b) Thermoplastics
c) Polyster
d) Thermosetting plastics

4. Polycot is made by mixing two types of fibres namely
a) Silk + Cotton
b) Polythene + cotton
c) Silk + Polyester
d) Polyester + Cotton

5. The 4 R Principle is
a) Reduce, Reuse, Recycle, Recover
b) Remember, reduce, Recycle, Rejoice
c) Repeat, Rejoice, recycle, reduce
d) None of the above

6. _____________ is an example of natural polymer
a) Rayon
b) Cellulose
c) Nylon
d) All of the above

7. Which of the following is Non-biodegradable ?
a) Woolen clothes
b) Plastic bag,
c) Cotton cloth
d) Wood

8. Bakelite and Melamine are examples of
a) Thermosetting plastics
b) Silk
c) Nylon
d) Rayon

9. Fire proof plastic uniform worn by fire fighters has a coating of _____ to make it fire resistant. a) Nylon
b) Rayon
c) Melamine plastic
d) silk

The coating on modern non- stick cookware and electric iron is of

a) Terrycot
b) Rayon

c) Polyester
d) Teflon​

Answers

1 None of the above
2 Thermoplastic
3 Thermosetting plastics
4 polyester + cotton
5 Reduce, reuse, recycle, recover
6. Cellulose
7 wood
8 thermosetting plastic
9silk
10 Teflon

A cup of water is warmed from 29 °C to 97 °C. What is the difference between these two temperatures, in kelvins

Answers

Answer:

I believe it is 68

Explanation:

to convert Celsius to kelvins you must add it to 273.15 for example 29 + 273.15 is 302.15

im so very sorry if im wrong.

What happens as a result of the photoelectric effect? A.light is produced

Answers

Answer:

photoelectric effect, phenomenon in which electrically charged particles are released from or within a material when it absorbs electromagnetic radiation. The effect is often defined as the ejection of electrons from a metal plate when light falls on it.

What is the molar concentration of Zn2+ ions in a solution, if the electrode potential value is 59mV less than the standard electrode potential value at 298 K?

Answers

Molar concentration of Zn2+ions in a solution is 3.481 mol/lit

The electrode potential value is 59mV

Temperature=298k

What is electrode potential?

It is a force of galvanic cell. basically it is the difference between an electrolyte and electrode.

equation formed- Zn → Zn2+ + 2e

              from Nernst equation-

E=E cell - 0.059 log [Zn2+]

[zn2+]=3.481 mol/lit

hence, Molar concentration of Zn2+ions in a solution is 3.481 mol/lit

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determine how many grams of N2 are produced from the reaction of 8.73
g of H2O2 and 5.16
g of N2H4.

Answers

Taking into account the reaction stoichiometry, 4.515 grams of N₂ can be produced from 8.73 grams of H₂O₂ and 5.16 grams of N₂H₄.

Reaction stoichiometry

In first place, the balanced reaction is:

N₂H₄ + 2 H₂O₂ → N₂ + 4 H₂O

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

N₂H₄: 1 mole H₂O₂: 2 molesN₂: 1 mole H₂O: 4 moles

The molar mass of the compounds is:

N₂H₄: 32 g/moleH₂O₂: 34 g/moleN₂: 28 g/moleH₂O: 18 g/mole

Then, by reaction stoichiometry, the following mass quantities of each compound participate in the reaction:

N₂H₄: 1 mole ×32 g/mole= 32 gramsH₂O₂: 2 moles ×34 g/mole= 34 gramsN₂: 1 mole ×28 g/mole= 28 gramsH₂O: 4 moles ×18 g/mole= 18 grams

Limiting reagent

The limiting reagent is one that is consumed first in its entirety, determining the amount of product in the reaction. When the limiting reagent is finished, the chemical reaction will stop.

Limiting reagent in this case

To determine the limiting reagent, it is possible to use a simple rule of three as follows: if by stoichiometry 34 grams of H₂O₂ reacts with 32 grams of N₂H₄, 8.73 grams of H₂O₂ reacts with how much mass of N₂H₄?

[tex]mass of N_{2} H_{4} =\frac{8.73 grams of H_{2} O_{2}x 32 grams of N_{2} H_{4} }{34grams of H_{2} O_{2}}[/tex]

mass of N₂H₄= 8.22 grams

But 8.22 grams of N₂H₄ are not available, 5.16 grams are available. Since you have less mass than you need to react with 8.73 grams of H₂O₂, N₂H₄ will be the limiting reagent.

Mass of N₂ formed

Considering the limiting reagent, the following rule of three can be applied: if by reaction stoichiometry 32 grams of N₂H₄ form 28 grams of N₂, 5.16 grams of N₂H₄ form how much mass of N₂?

[tex]mass of N_{2} =\frac{5.16 grams of N_{2} H_{4} x28 grams of N_{2}}{32 grams of N_{2} H_{4} }[/tex]

mass of N₂= 4.515 grams

Then, 4.515 grams of N₂ can be produced from 8.73 grams of H₂O₂ and 5.16 grams of N₂H₄.

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If data from a clinical trial contains personal information about a study participant, which process should be used to separate identifying information from health information?

A. De-identification
B. Informed consent
C. ALCOA
D. Good documentation practices

Answers

If data from a clinical trial contains personal information about a study participant, De-identification process should be used to separate identifying information from health information. Thus, Option (A) is correct

What is De-identification process ?

De-identification is a process of detecting identifiers (e.g., personal names and social security numbers) that directly or indirectly point to a person (or entity) and deleting those identifiers from the data.

De-identification and anonymization are strategies that are used to remove patient identifiers in electronic health record (EHR) data.

Hence, De-identification process should be used to separate identifying information from health information. Thus, Option (A) is correct.

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Other Questions
This is part A to one of my questions to help answer the second one, the second question is posted if anyone can help Suppose a firm is allowed to operate as a monopoly due to the presence of large economies of scale. Social welfare can potentially gain if Multiple choice question. price is regulated at the socially efficient level. profits are regulated at the socially efficient level. the HHI exceeds 1,800. profits are forced to be negative Assessing the regression model on data other than the sample data that was used to generate the model is known as _____. Group of answer choices approximation cross-validation graphical validation postulation The function f(x)=5(x1) is shown on the coordinate plane.Select from the drop-down menus to correctly describe the end behavior of f(x). As x decreases without bound, the graph of f(x) ______1. approaches y=02. increases without bond3. decreases without bondAs x increases without bound, the graph of f(x) ______1. approaches y=02. increases without bond3. decreases without bond A competition to catch the most rainbow trout on Lake Rainbow pitched the men against the ladies. 16 men and 12 women participated. Each participant had a total of 15 attempts before they retired from the competition. It was predicted that the men would have a 9% chance of catching a rainbow trout at each attempt. One participant's experience resulted in 3 successful catches. The probability that this participant was a woman is 40%. Find the probability that a participant successfully catches 3 rainbow trout, given that the participant was a woman. Narrowing of the coronary arteries caused by a buildup of fatty deposits is called: Write and solve an inequality that means a number plus six is less than or equal to twenty-four. Add.(3+x3+3x2)+(2x324x2)Express the answer in standard form.Enter your answer in the box. How many molecules in HNO3? What is the radius for a circle whose equation is +=367O A 18OB. 1296O C. 6O D. 36 To give a child the best chance at a healthy birth and infancy, a pregnant woman should do all of the following EXCEPT (5 points)A. avoid fish such as swordfish and mackerelB. postpone vaccines and most medical treatmentsC. strive for at least two hours of exercise per weekD. take a prenatal vitamin with folic acid daily you began with a 544 g sample Which expression is equivalent to (1sin)(1+sin)/cos2 for all values of for which (1sin)(1+sin)/cos2 is defined?Select the correct answer below:tan2tan+sectansec21 what happened to the indigenous peoples who fought in the french and indian war? those who allied with britain gained land and power. all indigenous peoples gained land and power. those who allied with france gained land and power. all indigenous peoples lost land and power. Use the moving and additivity principles to explain and she weighs why the next triangle has an area of 1/2 (b*h) Square units for the given choices of B and H. One! If it naturally with the expression b*(1/2h) and the other should fit naturally with the expression 1/2(b*h) what is the motivation behind Napoleon's actions in this excerpt The Pequot War was an example of The Protestant Reformation helped start the Scientific Revolution by:Dbringing Europeans into contact with Islamic scholars.O encouraging trade.sponsoring the work of scientists.questioning the power of the Church. Which two species produce fewer offspring, each of which has a high chance of surviving to maturity?A. Specialist species B. Generalist species C. R-selected species D. K-selected species 7. Which word has the strongest connotations?scamperedskippedranmoved