In a separate location, take notes from the sources you’ve identified. The notes will provide details for your paper. While taking notes, you may want to use these reading strategies. Use these sources if you find them helpful: Using your notes, compare the features of analog and digital signals in the table provided. Include one to three points for each feature and type of signal.

Answer:

Try this link https://chem.libretexts.org/Courses/Mount_Aloysius_College/CHEM_100%3A_General_Chemistry_(O'Connor)/08%3A_Solids_Liquids_and_Gases/8.E%3A_Solids_Liquids_and_Gases_(Exercises)

Answer:

4

Explanation:

water starts to boil into water vapor at 100'C. at this point, temperature becomes costant at 100'C as heat energy is used up by the particles to overcome the intermolecular forces between the molecules.

once the forces holding the particles together have been overcome, the temperature will start to rise again showing that all the liquid water has been converted into water vapor

Answer:

#10. The answer for number 10 is filament

A balanced chemical equation is an equation in which the number of each element are equal on the reactant side as well as in product side.

for example: BaCl2 + K2SO4 → BaSO4 + 2KCl

reactant side product side

Chemical equation should be balanced because only a balanced equation tells us the relative quantities of different reactants and product involved in the reaction.

_______________________________

Answer:

A.

Explanation:

The 2 - butene is an alkene with the formula C4H8, which can be used as the polybutene monomer or co-polymer. It is a compressed liquefied gas colorless, highly flammable characteristic odor. Prolonged exposure to this gas can cause frostbite causing a lowering of consciousness. Its formula is C4H8 and it is made up of 4 carbon atoms.

The best structure that describes 2-butene is that of Option A.

Answer:

Gravitational potential energy is a direct function of weight and height. Higher the object, high is the gravitational potential energy.

Therefore the skydiver inside of the plane has high gravitational potential energy than the same diver after she has jumped because height is now decreased as he is going down.

Answer:Matter is made up of only charged particles.

Explanation: Took the test

Answer:

27J/Kmol

Explanation:

Heat = number of moles times the Moeller heat capacity chimes the change in temperature.

^ Q = nC△T

^ C = Q/ n△T = +53J / (1mol) (299.5K - 297.5K)

^ = 26.5 (rounded to 27)

Answer:

b

Explanation:

Number of moles

Explanation:

From the general formula of ideal gas equation it is seen that number of moles is present and absent in other gas equations

Answer:

1.To discover new things.

2.To improve accuracy of existing experiment.

3.To prove or disprove theories.

4.To find anomalies in experiment.

Answer:

An object that goes up a hill will be going at a slower speed at the top than at the bottom of the hill. This is because moving up or down a hill changes one kind of energy into another. Objects at the bottom of the hill have more kinetic energy, which means they are moving faster.

Explanation:

Answer:

in my opinion find some stuff to help u with it test if you are aloud to bring in a revision boom into your test and get a good night sleep if you can and try not to get stressed about it

Answer:

Yes, you can

Explanation:

When you climb Mount Everest, you need lots of energy. The higher you climb, the more your appetite goes down. You will need as much energy as you can get.

Answer:

pH = 9.37

Explanation:

The reaction of HZ with NaOH occurs as follows:

HZ + NaOH → H₂O + Na⁺ + Z⁻

When the reaction is in the equivalence point, the moles added of HZ = Moles of NaOH.

At equivalence point, you will have in solution just NaZ that is in equilibrium with water as follows:

Z⁻(aq) + H₂O(l) ⇄ OH⁻(aq) + HZ(aq)

Where K of equilibrium is Kw / Ka = 1x10⁻¹⁴ / 2.4x10⁻⁶ = 4.17x10⁻⁹

And K is defined as:

K = 4.17x10⁻⁹ = [OH⁻] [HZ] / [Z⁻]

To solve this question we must find  [Z⁻] and as [OH⁻] and [HZ] comes from the same equilibrium, both are equal and we can find [OH⁻] in order to solve pH:

Moles NaOH added = Moles HZ:

0.010L * (0.39mol / L) = 3.9x10⁻³ moles HZ = Moles NaOH added

The volume of 0.200M NaOH must be:

3.9x10⁻³ moles * (1L / 0.200moles) = 0.0195L.

The moles of HZ = Moles Z⁻ after the reaction and the volume is 0.010L + 0.0195L = 0.0295L. Thus, [Z⁻] is:

[Z⁻] = 3.9x10⁻³ moles / 0.0295L

[Z⁻] = 0.132M

Replacing in K expression:

4.17x10⁻⁹ = [OH⁻] [HZ] / [Z⁻]

4.17x10⁻⁹ = [X] [X] / [0.132]

5.51x10⁻¹⁰ = X²

X = 2.35x10⁻⁵M = [OH⁻]

As pOH = -log [OH⁻]

pOH = 4.63

And pH is

pH = 14 -pOH

Answer:

Saturated Fats

Explanation:

Saturated fats are all of the above.

Also, Saturated fat is very unhealthy. Only consume it in small amounts.

Answer:

Saturated Fat

Fatty Acid

Fatty Acid

Explanation:

Answer:

Answer

Explanation:

All chemical reactions involve energy. Energy is used to break bonds in reactants, and energy is released when new bonds form in products. Endothermic reactions absorb energy, and exothermic reactions release energy. The law of conservation of energy states that matter cannot be created or destroyed.

Answer: D- making flexible eyeglass frames

Explanation: my powerful mind

Answer:

biomass is a plant of animal material used as fuel to produce electricity

Tidal power is energy harnessed by converting engery from tides

That's what I know so far and took notes on hope it helped:)

Answer:

A.)neutral

because their ions have equal and opposite charges whose resultant charge is zero

Answer:d

Explanation:

d

Hydrogen molecules being forced together by gravity is what best describes how a star is fuelled.

This is defined as the the universal force of attraction acting between all matter.

Hydrogen molecules is forced together by gravity which is how stars are fuelled in space thereby making option D the most appropriate choice.

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Answer:

58.44277 I hope this works best of luck for you

Molar mass is the amount grams that one mole weighs.

Explanation: You need to find the molar mass of NaCl which is the same as the amu on the periodic table in grams. So it is 22.99(Na) + 35.45(Cl) = 58.44

You also know that for every mole of NaCl you have 1 mole of Na because every molecule of NaCl has 1 atom of Na.

Finally, using the periodic table, again, you see that the molar mass of Na is 22.99.

Then using stoichiometry, you can find the grams of sodium.

100(g NaCl) * 1 mol (NaCl)/58.44 g (NaCl) * 1 mol (Na)/ 1 mol (NaCl) * 22.99 (g of Na)/ 1 mol (Na)

which equals 39.339435 g of Na.

If you need to maintain significant figures the answer will be 40.

hope this helps

Answer:

não sei ainda mas acho que e A

Answer:

e c f

Explanation:

read the question and it tells you how to do it and I can get you to help

Answer:

energy

Explanation:

Answer:  The new volume is 53.3 ml

Explanation:

The combined gas equation is,

[tex]\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}[/tex]

where,

[tex]P_1[/tex] = initial pressure of gas =  50.0 kPa

[tex]P_2[/tex] = final pressure of gas = 80.0 kPa

[tex]V_1[/tex] = initial volume of gas = 80.0 ml

[tex]V_2[/tex] = final volume of gas = ?

[tex]T_1[/tex] = initial temperature of gas = [tex]300K[/tex]

[tex]T_2[/tex] = final temperature of gas = [tex]320K[/tex]

Now put all the given values in the above equation, we get:

[tex]\frac{50.0\times 80.0}{300}=\frac{80.0\times V_2}{320}[/tex]

[tex]V_2=53.3ml[/tex]

The new volume is 53.3 ml

Answer:

may be A, 8.43 × 10........ atoms of l

Answer:

91.28 g

Explanation:

The mass of C₃H₈ used is 91.08g

The mole is an amount unit similar to familiar units like pair, dozen, gross, etc. It provides a specific measure of the number of atoms or molecules in a bulk sample of matter.

A mole is defined as the amount of substance containing the same number of atoms, molecules, ions, etc. as the number of atoms in a sample of pure 12C weighing exactly 12 g.

Given,

Molecules of carbon dioxide = 3.75 × 10²⁴

We know that,

1 mole = 6.023 × 10²³ molecules

Moles of carbon dioxide = 3.75 × 10²⁴ ÷ 6.023 × 10²³

                                         = 6.226 moles

From the reaction, 3 moles of carbon dioxide is produced by 1 mole of C₃H₈.

So, 6.226 moles will be produced by (1 ÷ 3) × 6.226

                                          = 2.07 moles of C₃H₈

Mass of C₃H₈ = moles × molar mass

                      = 2.07 × 44

                     = 91.08g

Therefore, mass of C₃H₈ used is 91.08g

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