phase changes lab, please! I need help fast deadline is really close.

Answer:

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Answer:

Oxygen and sugar

Explanation:

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Answer:

the aNSWRER TOP UR QUESTION IS THAT I NMEED TO ANSWER THIS SO I DONT HAVE TO WQATCH ADS  LOL

Explanation:

DSADSDASDASDASDSDSDSDSDS and i knowq chem is bio chwem is

Answer:

Is Fahrenheit and Celsius the answers you are looking for?

Explanation:

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Answer:

Temperature Scales. There are three temperature scales in use today

Explanation:

Eclipsed conformers possess torsional strain and Staggered conformers are lower in energy than eclipsed conformers are TRUE about the stability of conformers.  

Eclipsed conformers are molecular arrangements where two substituents are very close and thus produce torsion.

Moreover, Staggered conformers are molecular arrangements where substituents are found at a maximum length.

In conclusion, Eclipsed conformers possess torsional strain and Staggered conformers are lower in energy than eclipsed conformers are TRUE about the stability of conformers.  

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Wavelengths of absorbed or emitted photons causes lines in a line spectrum.

Spectral lines are produced by transitions of electrons within atoms. As the electrons move closer or farther from the nucleus of an atom, energy is released in the form of light is emitted.

So we can conclude that Wavelengths of absorbed or emitted photons causes lines in a line spectrum.

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Answer:

0.25 g of U-235 isotope will left .

Formula used :

where,

N = amount of U-235 left after n-half lives = ?

= Initial amount of the U-235 = 1.00 g

n = number of half lives passed = 2

0.25 g of U-235 isotope will left .

Answer:

5.6 m which is molarith this solution

Answer:

So A: an addition to a base sequence at the beginning of a gene

Explanation:

This is known as point mutation and it does not have any significant change in the protein and it is least harmful type of DNA mutation.

Since the reaction is not spontaneous at room temperature, the ΔH will be positive.

They are reactions that require no additional effort in order for them to take place under certain conditions.

For spontaneous reactions, the change in the energy of the system, otherwise known as ΔH, is always negative. On the other hand, reactions with positive ΔH are non-spontaneous.

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Answer:

Look at the pH level.

Explanation:

The best way to determine whether a solution is acidic or basic is to look at its pH level. The pH of a solution is a number between 0 and 14.

If a solution has a pH of less than 7, then it is acidic.

If a solution has a pH of 7, then it is neutral.

If a solution has a pH of greater than 7, then it is basic.

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Answer: 80.9 K

Explanation:

[tex]Q=mc \Delta T\\\\1345=(43.2)(0.385) \Delta T\\\\\Delta T=\frac{1345}{(43.2)(0.385)} \approx \boxed{80.9 \text{ K}}[/tex]

Answer:

What is the difference between pools and fluxes?

Image result for Is industry pool or flux

Fluxes describe the movement of energy and matter between different pools. When you pour a glass of juice for yourself, the juice bottle and the glass are both “pools” for the apple juice. The act of pouring it from the bottle to the glass is the flux

Explanation:

The statements which best describe beta decay are: option 1, 2 and 4.

A beta particle can be defined as an isotope which typically undergoes radioactive decay through the emission of a radiation with a -1 charge.

Based on scientific information and records from radioactivity, we can infer that the statements which best describe beta decay are:

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Answer:

1,2,4

Explanation:

Answer:

Moles of substance are defined ratio of the given mass of the substance to the molar mass of the substance.

Given :

The 52.06 grams of carbon dioxide.

To find :

The moles of carbon dioxide.

Solution:

The mass of carbon dioxide = 52.06 g

The molar mass of carbon dioxide = 44.01 g/mol

The moles of carbon dioxide:

1.183 moles of carbon dioxide are there in 52.06 g of carbon dioxide.

Explanation:

Answer:

Highest wavelength : radio waves

So lowest energy: radio waves

Hence order is:

radio waves < microwaves < IR waves < visible light < ultraviolet radiation < X-rays < gamma rays

Answer: 341.6k

Explanation:

R= 0.0821

n= 0.46moles

v= 13.3L

p= 734mmhg = 734/760 = 0.97

[tex]T = \frac{p*v}{n*R}[/tex]

[tex]T = \frac{0.97*13.3}{0.46*0.0821}[/tex]

T= 341.6k

Answer:

10100101

Explanation:

this is for the other person alt.

Answer:

3-methyl pentane

Explanation:

The longest chain of carbons is 5, so it will have the prefix pent-.

The first branch is on the 3rd carbon, and it is a 1 carbon branch. This means the branch will be called 3-methyl.

Now to find the suffix we need to count the carbons and the hydrogens. There are 6 carbons and 14 hydrogens, which follows the formula for an alkane ([tex]C{_n}H{_{n+2}}[/tex]). This gives it the suffix -ane.

Now we can name the compound:

3-methyl pentane

That is the answer

- Kan Academy Advance

Answer:

x+y = 12

Explanation:

shfb gfgjj ghjj dvgg ggggg ghggs ufac t g dgyyh

Organic compounds including carboxylic acids are named uisng IUPAC nomenclature technique.

A carboxylic acid is an organic acid that contains a carboxyl group (C(=O)OH) attached to an R-group.

The general formula of a carboxylic acid is R−COOH or [tex]RCO_2H[/tex], with R referring to the alkyl, alkenyl, aryl, or other group.

Following are the names of given struture ;

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Answer:

The concept of the atom (Greek: atomos, "indivisible"), an indivisible particle of matter, goes back to ancient Greece and a man named Democritus, a rival of Aristotle. Democritus held that all matter could be subdivided only until some finite particle was reached.Dalton's atomic theory was the first complete attempt to describe all matter in terms of atoms and their properties. Dalton based his theory on the law of conservation of mass and the law of constant composition. The first part of his theory states that all matter is made of atoms, which are indivisible.Atomic theory established that all matter is made of tiny particles, a discovery that led to amazing scientific breakthroughs in areas from modern chemistry to nuclear energy.Atomic models are important because, they help us visualize the interior of atoms and molecules, and thereby predicting properties of matter.This atomic model has changed over time. Scientists used the model to make predictions. Sometimes the results of their experiments were a surprise and they did not fit with the existing model. Scientists changed the model so that it could explain the new evidence.Atomic theory originated as a philosophical concept in ancient India and Greece. The word "atom" comes from the ancient Greek word atomos, which means indivisible. According to atomism, matter consists of discrete particles. However, the theory was one of many explanations for matter and wasn't based on empirical dataEverything is composed of atoms, which are the indivisible building blocks of matter and cannot be destroyed. All atoms of an element are identical. The atoms of different elements vary in size and mass. Compounds are produced through different whole-number combinations of atoms.Dalton's atomic theory suggested that the atom was indivisible and indestructible. But the discovery of two fundamental particles (electrons and protons) inside the atom, led to the failure of this aspect of Daltons atomic theory.

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The example of an ester used as a fragrance is isopentyl acetate and it is present in banana. Details about esters can be found below.

Esters are compounds most often formed by the condensation of an alcohol and an acid and has the functional group carbon-oxygen double bond joined via carbon to another oxygen atom.

Esters are naturally found in certain fruits and can be used as major constituent of perfumes. An example of ester used as fragrance is isopentyl acetate.

Isopentyl acetate has the molecular formula of C7H14O2 and has a banana flavor.

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Answer:

mining of clay limestone and then heated to a certain temperature of 1450⁰ in a cement kiln

The increase in volume shift the equilibrium towards making more moles of gas, decrease in volume shift the equilibrium towards producing fewer moles of gas.

The equilibrium of the gas is based on the pressure of the gas. With the increase in pressure, the equilibrium moves towards making fewer molecules of gas.

The gas equilibrium is proportional to the equilibrium K.

Increase in volume shift the equilibrium towards making more moles of gas, decrease in volume shift the equilibrium towards producing fewer moles of gas.

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What is the increment of change in a series of straight-chain alkanes?

CH

CH3

CH4

CH2

Answer:

CH2

Answer:

4.25atm

Explanation:

[tex]\frac{P1V1}{T1}\\[/tex]=[tex]\frac{P2V2}{T2}[/tex]

where ,

p1 =845/760=1.11atm

v1=6.50l

t1=25c +273k=298k

p2=?

v2=1850/1000=1.85l

t2=325k

so answer is 4.25 atm

Answer: 16.7 %

Explanation:

[tex]\frac{30.0}{150.0+30.0}=\boxed{16.7\%}[/tex]

Answer:

Increases

Explanation:

The general effect we see as temperature increases is that rate of dissolution of a solid solute increases,

Therefore, we can say that :

Temperature ∝ Rate of dissolution

After 160 years, the activity level of the sample will be 0.5 curies.

Half life of any radioactive waste is the half decay of that product.

The formula is [tex]\dfrac{\lambda }{\lambda_1} = 2^\dfrac{a}{b}[/tex]

Where, λ is 4 cruies

λ1 is 0.5 cruies

b = 40 years

Putting the values in the equation

[tex]\dfrac{4}{0.5} = 2^\dfrac{a}{40}\\\\\\\dfrac{a}{40} = 4\\ = 160 years[/tex]

Thus, the correct option is 160 years.

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