Please it’s due today at 6:00pm please help me will mark the brainiest and more points please help me

Answer:

C. A law passed by the British parliament that prohibited colonial movements west of the Appalachian Mountains.

Explanation:

Answer:

✔ Cumberland Gap

was a natural mountain pass through the Appalachian Mountains.

This is the Correct Answer!

This might not be the same Question. This is history 5th Unit.

Answer:

9.91 X 10^-5 or 0.000099 mol

Explanation:

Explanation:

1.17×10^24 molecules of co2

Answer:

20.4g NaOH

Explanation:

Because, trust the drip, trust the drip

Answer:

Hope this isnt dumb!

Explanation:

Earth rotates on a axle this causes us to experience a day and night moment but however Earth's axis is tilted 23.5 degrees the and angled to measure between Earth's equatorial plane in the plane in which orbits are sun.

Answer:

The Earth rotates on it's axis, and it takes 24 hours for the Earth to go all the way around. When the part of the Earth you're on is facing the sun, you have daytime. When the part of the Earth you're on is not facing the sun (facing the moon instead), you have nighttime.

I hope this helps!

Answer:

3.72 mol Hg

General Formulas and Concepts:

Chemistry - Atomic Structure

Explanation:

Step 1: Define

D = 13.6 g/mL

54.8 mL Hg

Step 2: Identify Conversions

Molar Mass of Hg - 200.59 g/mol

Step 3: Find

13.6 g/mL = x g / 54.8 mL

x = 745.28 g Hg

Step 4: Convert

[tex]745.28 \ g \ Hg(\frac{1 \ mol \ Hg}{200.59 \ g \ Hg} )[/tex] = 3.71544 mol Hg

Step 5: Check

We are given 3 sig figs. Follow sig fig rules and round.

3.71544 mol Hg ≈ 3.72 mol Hg

Answer:

Curd, lemon juice, orange juice and vinegar taste sour. These substances taste sour because they contain acids. The chemical nature of such substances is acidic. The word acid comes from the Latin word acere which means sour.

Answer:

It is D. a second set of chromosomes is produced

Explanation:

Hope this helped have an amazing day!

Answer:

300g of water because its a larger amount

Explanation:

Answer:

-3.82ºC is the freezing point of solution

Explanation:

We work with the Freezing point depression to solve the problem

ΔT = m . Kf . i

ΔT = Freezing point of pure solvent - freezing point of solution

Let's find out m, molality (moles of solute in 1kg of solvent)

15 g / 58.45 g/mol = 0.257 moles of NaCl

NaCl(s) → Na⁺ (aq) + Cl⁻(aq)

i = 2 (Van't Hoff factor, numbers of ions dissolved)

m = mol /kg → 0.257 mol / 0.250kg = 1.03 m

Kf = Cryoscopic constant → 1.86 ºC/m (pure, for water)

0ºC - Tºf = 1.03m . 1.86ºC/m . 2

Tºf  = -3.82ºC

Answer:

Balanced equation: 3HBr + Al(OH)3 → 3H2O + AlBr3

Hydrogen Bromide + Aluminum Hydroxide = Water + Aluminum Bromide

Explanation:

Hoped this helped you but I wasn't sure was this what you were asking for!!!

Have a great day!!

Answer:

The answer is 3

Explanation:

The nutrients from fertilizer runoff is the most probable answer, because the other 3 dont contribute to algae growth

Answer:

excess nutrients from fertilizer runoff.

Explanation:

Answer:

there gravitational force is very less to pull the weight of a person.

Two students who stand close to each other don't get pulled closer as a

result of gravitational force because the magnitude of the force is small.

Gravitational force acts on all objects on Earth but the force exerted is very

small as a result of the masses of the students being very small as to when

compared with that of the earth.

The large difference in mass of the student and earth is the reason why the

effect of the force is very little and unable to move them closer.

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Based on the octet rule, phosphorus most likely forms a P³⁻ ion; option D.

The octet rule is a rule which describes the way in which atoms of elements behave in terms of electron arrangement or distribution in order to achieve stability.

The octet rule states that atoms of elements achieve stability when they have eight electrons in their valance shells.

It explains that atoms of elements will gain, lose or share a certain number of electrons in order to achieve the stable electronic configuration of the noble gases.

Phosphorus has five electrons in its valence shell and will accept three electrons in order to have an octet.

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ANSWER: Surface Fresh Water

Humans only use 0.3% of the water on earth. The other 99.7 percent is in the oceans, soils, icecaps, and floating in the atmosphere.

Answer:

Plates

Explanation:

The Earth's crust is broken up into sections called plates. Tectonic plates are on the mantle which allow them to move.

Answer:

201 ÷ 3 = 67mph

Explanation:

let me know if you want me to explain more

If the plants in yellow light grow faster during her experiment, Lana should repeat the experiment to confirm the result. Option D.

In science, hypotheses are tested using experiments. Two hypotheses are usually formed during the course of experimentation:

The null hypothesis is set up to either be accepted is found to be true or rejected if found to be false. The alternate hypothesis is just there for guidance.

Hypotheses being found not to be true does not always mean that the reverse will be true.

Thus, if a complete opposite is obtained during testing, the next thing would be to repeat the experiment in order to be double sure there was not a mistake.

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Answer:

Since both hot and cold temperature extremes can negatively affect the enzymes, vitamins, and nutrients in lemons when making lemon water, room temperature water between 68 degrees to 79 degrees Fahrenheit is the best option.

Explanation:

hope it helps you

Answer:

A. Atmosphere

Explanation:

hope this helps

Answer:

D i think. Not sure.

Explanation:

I mean i just did it myself, and i dont really do chemistry, but I would say D sorrry if i made you get it wrong!!

Answer:

C. Heat transfers thermal energy from the student's hand to the ice.

Explanation:

I got it right on my test apix

Answer:

I havent the foggiest.

Explanation:

Answer:

Explanation:

I havent the foggies

Answer:

3

Explanation:

edge 2020

There are 3 hydroxide ions bonded to each aluminum ion.

Aluminum belongs to the 13th group of the periodic table. It has 13 electrons in the orbitals. According to the electron distribution rule, there are 3 valence electrons in the aluminum ion.

In the molecule of hydroxide, the oxygen has 5 valence electrons capable of the formation of the double bond. The bonding of the hydroxide ion with the aluminum ion will complete the octet of Aluminum and oxygen by the formation of the double bond.

So Aluminum can form 3 bonds with hydroxide ions. 2 double contributing to 4 electrons and 1 single bond completing the octet of Aluminum.

Thus Aluminum can form 3 bonds with hydroxide ions.

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Answer:

[tex]H_3PO_4(aq)+H_2O(l)\rightleftharpoons H_3O^+(aq)+H_2PO_4^{-}(aq); \ Ka_1[/tex]

[tex]H_2PO_4^{-}(aq)+H_2O(l)\rightleftharpoons H_3O^+(aq)+HPO_4^{-2}(aq); \ Ka_2[/tex]

[tex]HPO_4^{-2}(aq)+H_2O(l)\rightleftharpoons H_3O^+(aq)+PO_4^{-3}(aq); \ Ka_3[/tex]

Explanation:

Hello!

In this case, since the phosphoric acid is a triprotic acid, we infer it has three stepwise ionization reactions in which one hydrogen ion is released at each step, considering they are undergone due to the presence of water, thus, we proceed as follows:

[tex]H_3PO_4(aq)+H_2O(l)\rightleftharpoons H_3O^+(aq)+H_2PO_4^{-}(aq); \ Ka_1[/tex]

[tex]H_2PO_4^{-}(aq)+H_2O(l)\rightleftharpoons H_3O^+(aq)+HPO_4^{-2}(aq); \ Ka_2[/tex]

[tex]HPO_4^{-2}(aq)+H_2O(l)\rightleftharpoons H_3O^+(aq)+PO_4^{-3}(aq); \ Ka_3[/tex]

Moreover, notice each step has a different acid dissociation constant, which are quantified in the following order:

Ka1 > Ka2 > Ka3

Best regards!

Answer:

The density of tin is 7.31 g/cm³.

Explanation:

Given that the formula of density is D = m/v where m represents mass and v is volume :

D = 16.52/2.26

D = 7.31 g/cm³ (3sf)

Answer:

8kJ/mol

Explanation:

since the forward reaction is -8kJ/mol, the backward reaction has the same enthalphy but reversed

The enthalpy of the reaction is 8kj/mol because it is a reversed reaction.

Since the forward reaction is -8kj/mol, thebackward enthalpy will be 8kj/mol.

Enthalpy is refers to the total sum of the internal energy that is sum up to the product of the pressure and volume in a system of reaction.

Therefore, The enthalpy of the reaction is 8kj/mol because it is a reversed reaction. Since the forward reaction is -8kj/mol, the backward enthalpy will be 8kj/mol.

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