Malia was able to make a paperclip float on the surface of water. What will most likely happen to the paperclip if a drop of dishwashing detergent is added near it?
Soap is a surfactant that increases the intermolecular forces of water allowing the paperclip to continue to float.
Soap makes the water less viscous making the paperclip sink.
Soap is a surfactant that disrupts the intermolecular forces of water making the paperclip sink.
Soap makes the water more viscous allowing the paperclip to continue to float.

The continents of today contain remnants of their distant history. The presence of glaciers, fossils, and complementing coasts provides evidence of how the plates originally interacted. Plants and animals used to exist, and fossils when and where they did.

Any surviving remnants, impression, or evidence of a once-living creature from a previous geological epoch is referred to as a fossil. Examples include fossilized bones, shells, exoskeletons, animal or microbe impressions in stone, amber-preserved artifacts, hair, petrified wood, oil, coal, and DNA traces.

There are four basic categories of fossils, each generated in a unique method and useful for conserving various kinds of animals. These include true form fossils, mold fossils, cast fossils, and trace fossils.

In river valleys, cliffs, hillsides, and man-made exposures like quarries and road cuts, sedimentary rocks of the appropriate age are exposed, and these are the places where fossils are most commonly found.

Thus,  Plants and animals used to exist, and fossils when and where they did.

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Answer:

Average Atomic Mass= 63.5 amu

Explanation:

Average Atomic Mass Equation:

(Mass 1)(% Abundance) +(Mass 2)(% Abundance)

Plug in Variables:

Make sure to convert the percentages into decimals. (Left two places)

Use the order of operations when solving.

(62.9)(0.692) + (64.9)(0.308) = AAM

Multiply each side

43.5268 + 19.9892 = AAM

Add the products together

63.516 = AAM

Add proper unit and satisfy the 3 significant figures needed

63.5 amu

Answer:

The free neutron has a mass of 939,565,413.3 eV/c2, or 1.674927471×10−27 kg, or 1.00866491588 u. The neutron has a mean square radius of about 0.8×10−15 m, or 0.8 fm, and it is a spin-½ fermion.

Mass: 1.67492749804(95)×10−27 kg; 939.56542052(54) MeV/c2; 1.00866491588...

Composition: 1 up quark, 2 down quarks

Electric charge: 0 e; (−2±8)×10−22 e (experimental limits)

Magnetic polarizability: 3.7(20)×10−4 fm3

The kinetic energy J of the eagle is mathematically given as

K.E=1350

Question Parameters:

A 12-kilogram eagle is flying at 15 meters/sec.

Generally, the equation for the kinetic energy  is mathematically given as

K.E=1/2mv^2

Therefore

K.E=1/2(12)(15)^2

K.E=1350J

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Answer:

18,000

Explanation:

Answer:

The wind knocked it over.

Explanation:

This is true because in many storms, there are very high wind speeds.

Explanation:

21 piece =45 mins

100 pieces= x

on cross multiplication

21x=45×100mins

21x =4500mins

x =4500mins÷21

=214.3mins or 3.57hrs

The correct answer is element

Answer:

Temperature

Explanation:

.

Answer:

a

Explanation:

I just took the test

Answer:

The average pH today is 8.1, with 7.9 × 10-9 moles per liter of hydrogen ions. The original average pH was 8.2, with 6.3 × 10-9 moles per liter of hydrogen ions.

Using the formula, the percent increase in the number of hydrogen ions from then to now would be computed this way:

The hydrogen ion concentration and acidity of the ocean has increased by 25%.

Explanation:

There is a [tex]25%[/tex] % increase in acidity of the ocean when compared to the past.

An acid is a chemical species that can donate a proton or accept a lone pair of electron.

The average pH of ocean for the last 300 million years is 8.2.

The current pH of the ocean is 8.1.

Percent increase in acidity =

[tex]\frac{initial concentration of H^+ ions - final concentration of H^+ ions}{Initial concentration of H^+ ions}[/tex]   ×[tex]100[/tex]

Therefore, percent increase in acidity = [tex]\frac{7.9-6.3}{6.3}[/tex]×[tex]100[/tex][tex]=25[/tex]%

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Answer:

2.3 mol of N2

Explanation:

mol N2 = 3.5 mol O2 x. 2 mol N2  

3 mol O2. = 2.3 mol N2.

Based on the item bank, the various classification for each item are:

Both (Kinetic energy and  Potential energy):

Potential energy:

Energy can be defined as the ability to do work. Thus, energy must be possessed or transferred to an object or physical body before it can be used in doing a work or heating a system.

In Science, there are different forms of energy and these include the following;

Both (Kinetic energy and  Potential energy):

Potential energy:

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A

I m not sure ...........................

Answer: The spleen plays multiple supporting roles in the body. It acts as a filter for blood as part of the immune system

Explanation:

Answer:

The Pancreas is an organ located in the abdomen. It is not a part of the human digestive system, although it does produce the pancreatic juices that act as enzymes to HELP in digestion. In other words, the Pancreas plays an important role in converting the food we eat into fuel for the body's cell.

The degree of hydrolysis of 02.M solution of NaHCO₃ = 2.33 * 10⁻⁸

Given data :

Concentration of NaHCO₃ = 0.2 M

Ka1 = 4.3 * 10⁻⁷

Ka2 = 4.8 * 10⁻¹¹

NaHC0₃  ----> Na⁺ + HCO₃

where : Na⁺ is a stronger and HCO₃ is weaker

Therefore;

hydrolysis will occur at HCO₃

HCO₃ + excess water --> H₂CO₃ + OH⁻ --- kh

kh = hydrolysis constant

Also

Kh = Kw / Ka1

where ; Kw = ionic product of water ( 10⁻¹⁴ ) , Ka1 = dissociation constant

Finally the degree of hydrolysis is

Kh = ( 10⁻¹⁴ ) / 4.3 * 10⁻⁷

    = 2.33 * 10⁻⁸

Hence we can conclude that The degree of hydrolysis of 02.M solution of NaHCO₃ = 2.33 * 10⁻⁸

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Answer:

Atomic number.

Because 2 values given here are 0.05g and one is 5.20g. So there are 2 atoms of one element or compound and one atom of another element or compound.

I am thinking there is an error in or sign. it is supposed to be  ± instead of st + as in 5.20 g  ± 0.05g.

0.05 g indicates the Measurement of Uncertainty

The mass of an object is reported as 5.20 g  ±0.05g.

 Here , the  Measurement of Uncertainty  ±0.05g. explains that Random error always occur when taking measurements reading with any scale.This tells us that the object's correct reading is between 5.15 g and 5.25 g from 5.20 g- 0.05g. and 5.20 g + 0.05g respectively.

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Not letting me add answer

Refer to the attachment

kinetic energy

Explanation:

energy associated with motion is kinetic energy

Answer: Kinetic Energy

Explanation: Kinetic energy is the energy of mass in motion. The kinetic energy of an object is the energy it has because of its motion. ... Note that energy is a scalar quantity, i.e., it does not depend on direction, and it is always positive.

Answer:

Development of synthetic drug and fabric

Nuclear energy and bomb testing

Increased nitrogen fixation

Explanation:

This is because these things help global warming and animal extinction

Answer:

A molecular formulae________

will tell you how many and what

kinds of atoms are in a molecule, but not how they are

arranged.

Answer:

Answer: C3H8 + 5O2 → 3CO2 + 4H2O.

Explanation:

I believe the answer is (B) as molten Kevlar when spun into fiber, its polymers have a crystalline arrangement.

Hope that helped!

Answer:

The molecules stack together in crystal-like structures

Explanation:

i've taken the test

The given reaction describes the decomposition of glucose into ethanol and carbon dioxide. This process is called fermentation. The reactant of this reaction is glucose.

Fermentation is the process of conversion of sugar molecule into other substance b the action of microbes such as yeast. In cellular respiration the glucose molecule is converting to carbon dioxide and water. Where as, in fermentation, the glucose is converting to carbon dioxide and ethanol.

The balanced chemical equation of the breaking of glucose into carbon dioxide and water is written as follows:

[tex]\rm C_{6}H_{12}O_{6} \rightarrow 2CO_{2} + 2C_{2}H_{5}OH.[/tex]

According to this reaction, one mole of glucose molecule gives 2 moles of carbon dioxide and 2 moles of ethanol. Hence, reactant in this reaction is glucose.

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Answer:

Your answer would be:
C.) Praire Grass

Explanation:

In a prairie ecosystem, the population (grass, sun, etc.) with the most amount of stored energy for use by other organisms would be the prairie grasses. The grasses will gather the energy from the sun storing it. A herbivore would come along and eat it gaining energy from it. Unfortunately, the herbivore will only gain an amount of energy that is 10x less than the plant had. If a carnivore ate the herbivore then the carnivore would gain energy but 10x less than the carnivore had gained.
(Example)

Plant: 1,000,000 *gathers energy from the sun*

Herbivore: 100,000 *gains energy but, 10x less than the plant gained*

Carnivore: 10,000 *gains energy but, 10x less energy than the herbivore gained*

Fungus: 1,000 *in a process called decomposition the fungus will gather energy from a dead organism* *the energy it gets may vary because it depends if it is a herbivore or carnivore that has decomposed* *In this example however it is a carnivore*

Animals that eat fungus: 100

Animals that eat the animal up above: 10

And it's important to see that as the energy is dispersed more and more it, becomes less energy given to each organism.


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Answer:

False

Explanation:

A gas has neither a definite shape nor a definite volume.

Answer:

11.647g of water may be produced.

Explanation:

chemistry of the reaction:

2O2 + 2H2 ----> 2H2O + O2

64g + 4g yields 36g of water,

20g + 2g yields 11.647058824g of water