QUICKKK
Use the combined gas law. The pressure of a gas is raised from 1 atm to 3 atm and the temperature is raised from 100 K to 200 K. The volume of the gas will
a. remain the same
b. increase by two times
c. increases by four times
d. decrease by half
e. increase by six times

Dispersive forces act on intermolecular interactions between Ar and Ar, Ne, and Kr.

define atom ?

Every atom is made up of a nucleus and one or more electrons that are attached to the nucleus. One or more protons and a number of neutrons make up the nucleus. Only the most prevalent kind of hydrogen is neutron-free.

Every solid, liquid, gas, and plasma is made up of atoms that are either neutral or ionised. Atoms are incredibly tiny, measuring around 100 picometers across. Because they are so tiny, it is impossible to precisely anticipate their behaviour using classical physics, as if they were tennis balls, due to quantum phenomena.

The nucleus contains more than 99.94% of an atom's mass. Protons have a positive electric charge, electrons have a negative electric charge, and neutrons have none.

Dispersive forces act on intermolecular interactions between Ar and Ar, Ne, and Kr

Because their other electrons are placed in shells further from the nucleus, heavier atoms interact more strongly than lighter atoms because they are more easily deformed by external influences.

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Based on the given reactions, the compounds are as follows:

A: The specific product formed from the reaction between prop-1-yne and either 2HBr or H2O2.

B: The product formed when compound A reacts with 2H2O.

C: The product formed when compound B reacts with K2CO3(aq).

D: The product formed from the heat-induced reaction of compound C.

E: The product formed when compound D reacts with HBr.

Based on the given reactions, let's analyze the compounds involved:

Reaction 1: prop-1-yne + 2HBr/H2O2 = A

The reactant prop-1-yne reacts with either 2HBr or H2O2 to form compound A. The specific product formed will depend on the reaction conditions.

Reaction 2: A + 2H2O = B

Compound A reacts with 2H2O (water) to form compound B.

Reaction 3: B + K2CO3(aq) = C

Compound B reacts with K2CO3(aq) (potassium carbonate dissolved in water) to form compound C.

Reaction 4: C + heat = D

Compound C undergoes a heat-induced reaction to form compound D.

Reaction 5: D + HBr = E

Compound D reacts with HBr (hydrobromic acid) to form compound E.

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Answer:

The wallet is falling from a height of 1450 m

We are given that:

downward acceleration (a) = 10 m/s/s

downward displacement (s) = 1450 m

downward initial velocity (u) = 0 m/s (Since the wallet was dropped, it had no initial velocity)

horizontal initial velocity (v) = 13 m/s

Since there is no external force being applied on the wallet except the force of gravity, the wallet will keep moving at a constant velocity of 13 m/s

To calculate the horizontal distance travelled by the wallet, we need to know how long the wallet was airborne

To calculate how long the wallet was airborne, we have to find out that how long it took the wallet to hit the ground

Time taken for the wallet to hit the ground:

From the second equation of motion:

s = ut + 1/2 at² ------------(for vertical motion of the wallet)

1450 = (0)(t) + 1/2 (10)(t)²

1450 = 5t²

t² = 290

t = 17 (approx)

Time taken for the wallet to hit the ground = 17 seconds

Horizontal distance travelled by the wallet:

Since the wallet hits the ground after 17 seconds, it will move horizontally at a constant velocity of 13 m/s for 17 seconds

horizontal acceleration = 0 m/s/s

From the second equation of motion:

s = ut + 1/2at²

s = ut + 1/2 (0)t²

s = ut

here, u is the horizontal initial velocity of the wallet and the time taken by the wallet to hit the ground is 't'

s = (13)(17)

s = 221 m

Hence, the horizontal distance travelled by the wallet while falling from a height of 1450 m is 221 m

The value of Kc for the given reaction is 0.0579 (rounded to four decimal places).

The formula for the equilibrium constant, Kc, of a reaction is given by the ratio of the product of the concentrations of the products raised to their respective stoichiometric coefficients to the product of the concentrations of the reactants raised to their respective stoichiometric coefficients.

The stoichiometric coefficients are the coefficients in the balanced chemical equation.

To determine the value of Kc for the reaction given by the following chemical equation:N2(g) + 3 H2(g) ⇌ 2 NH3(g)

we first need to write the expression for Kc.

The expression for Kc is given by the following formula:Kc = [NH3]² / [N2][H2]³.

We are given the equilibrium concentrations as follows:[N2]eq = 2.66 M[H2]eq = 0.64 M[NH3]eq = 3.34 M

We can substitute these values into the expression for Kc and obtain the following:Kc = (3.34)² / (2.66)(0.64)³ = 0.0579 (rounded to four decimal places).

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Answer:

There are five main types of chemical reactions. These are synthesis, decomposition, combustion, single replacement and double replacement.

Explanation:

So, the speed of the proton is approximately 2.30 x 10⁶ m/s.

The de Broglie wavelength is a concept in quantum mechanics that was introduced by Louis de Broglie in 1924. It refers to the wavelength associated with a moving particle, such as an electron, proton, or other type of particle, and is proportional to its momentum.

To find the speed of the proton (v): v = h/(mλ)

v = (6.626 x 10⁻³⁴ Js) / [(1.67 x 10⁻²⁷kg)(154 x 10⁻¹² m)]

= 2.30 x 10⁶ m/s

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Option B is the correct answer.

A disaccharide is a molecule which is made of two units of monosaccharide which is linked together by a glycosidic bond.

Example: Sucrose, lactose

Disaccharides, also called double sugar, is any substance that is composed of two molecules of simple sugars (monosaccharides) linked to each other. Disaccharides are crystalline water-soluble compounds.

Hence, option B is the correct answer.

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Answer:

Explanation:

MW of NaOH = 40 g/mol

MW of KCl = 74.55 g/mp;

250 mL = .25 L

100g NaOH / 40 g = 25 mol

100g KCl/ 74.55g = 1.34 mol

Molarity of NaOH: 25/.25 = 100M

Molarity of KCl: 1.34/.25 = 5.36 M

100M is the concentration of NaOH.

5.36 M is the concentration of  KCl.

Molarity (M) is the amount of a substance in a certain volume of solution. Molarity is defined as the moles of a solute per litres of a solution.

The scientific noun molarity describes the concentration of a substance as measured by the number of moles divided by the volume of the solution in litres.

\(Molality = \frac{Moles \;solute}{Volume\; of \;the \;solution \;in \;litres}\)

Molecular weight of NaOH = 40 g/mol

Molecular weight of KCl = 74.55 g/mp;

250 mL = .25 L

100g NaOH ÷ 40 g = 25 mol

100g KCl ÷ 74.55g = 1.34 mol

Molarity of NaOH: 25 ÷ .25 = 100M

Molarity of KCl: 1.34 ÷ .25 = 5.36 M

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Answer:

0.00536 moles Pb(NO₃)₂

Explanation:

To find the amount of moles, you need to (1) convert milliliters (mL) to liters (L) and then (2) calculate the number of moles (using the molarity ratio). It is important to arrange the conversions in a way that allows for the cancellation of units. The final answer should have 3 sig figs.

(Step 1)

1,000 mL = 1 L

 12.29 mL                1 L
-----------------  x  -------------------  =  0.01229 L
                            1,000 mL

(Step 2)

Molarity = moles / volume (L)                 <----- Molarity ratio

0.436 M = moles / 0.01229 L                 <----- Insert given values

0.00536 = moles                                    <----- Multiply both sides by 0.01229 L

Hydrophosphoric acid is generally known as phosphine and the formula for hydrophosphoric acid is PH3 P H 3

Hypophosphoric acid is a mineral acid with phosphorus in an oxidation state +4.It has a chemical formula H4P2O6.

Hypophosphorous acid is used as a decolorizing agent and for color stabilization during the manufacture of chemicals and several plastics including: nylon fibers, polyamides, polyester fiber, polyacrilonitrile, alkyd rsins, epoxies, fatty acid esters and glycerols.

Therefore, the formula of hypophosphoric acid is H4P2O6. It contains four P-OH bonds, Two P=O. bonds and one P-P bond.

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Answer:

14.57g

Explanation:

Given parameters:

Mass of dish + ball  = 15.6g

Initial volume of water in the cylinder  = 26.7mL  

Final volume of water in the cylinder  = 38.9mL

Mass of dish = ?

Unknown

Mass of the ball = ?

Solution;

 Since the mass of ball and dish is 15.6g,

 Mass of the ball  =Mass of ball + dish  - mass of the dish

 Insert the parameters and solve;

 Mass of the ball  = 15.6g  - 1.03g  = 14.57g

Answer:

\( \huge{ \boxed{111.30 \: \: \text{moles}}}\)

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

\( \bold{n = \frac{N}{L} \\ }\)

where

n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities.

From the question.

N = 6.7 × 10²⁵ \( \: H_2SO_4 \: \) molecules

\(n = \frac{6.7 \times {10}^{25} }{6.02 \times {10}^{23} } \\ = 111.2956...\)

We have the final answer as.

Explanation:

2x²=8

x²=8/2

x=√4

x=2

hope it helps.

Answer:

\(\huge \fbox \pink {A}\huge \fbox \green {n}\huge \fbox \blue {s}\huge \fbox \red {w}\huge \fbox \purple {e}\huge \fbox \orange {r}\)

\( {2x}^{2} = 8 \\ {x}^{2} = \frac{8}{2} \\ {x}^{2} = 4 \\ x = \sqrt{4} \\ x = 2\)

ʰᵒᵖᵉ ⁱᵗ ʰᵉˡᵖˢ

\( \huge\purple{ \mid{ \underline{ \overline{ \tt ꧁❣ ʀᴀɪɴʙᴏᴡˢᵃˡᵗ2²2² ࿐ }} \mid}}\)

Answer:

The reaction CO₂ + H₂O → C₆H₁₂O₆ + O₂ is exothermic because it releases energy. The energy is released because the bonds in the products (C₆H₁₂O₆ and O₂) are stronger than the bonds in the reactants (CO₂ and H₂O). Specifically, the reaction releases energy because the bonds between carbon and oxygen in CO₂ and the bonds between hydrogen and oxygen in H₂O are weaker than the bonds between carbon, hydrogen, and oxygen in C₆H₁₂O₆ and the bonds between oxygen atoms in O₂

The volume of the acid that we are going to need in this case is 27000 mL.

We know that we have to know the reaction equation as this is the first step to solve the problem that we have here;

We know that;

CaCO3 + 2HCl → CaCl2 + H2O + CO2

Then we have that;

Molarity of the acid = Antilog (-1.55)

= 0.028 M

Number of moles of the base;

38 g/100 g/mol

= 0.38 moles

If 1 mole of the base reacts with 2 moles of the acid;

0.38 moles of the base reacts with 0.38 * 2/1

= 0.76 moles

Then;

Number of moles = Concentration * volume

Volume = Number of moles/Concentration

= 0.76/ 0.028

= 27 L or 27000 mL

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Answer:

The H—C—H bond angle in methane is the tetrahedral angle, 109.5°. This angle is obtained when all four pairs of outer electrons repel each other equally. The bond angles in ammonia and in water are less than 109.5° because of the stronger repulsion by their lone pairs of electrons.

Explanation:

hope it helps!

The liquid in Titan's lake is believed to be composed of liquid methane and ethane, which are thought to be supplied by geological processes such as cryovolcanism and seepage from the surrounding terrain. Over time, the liquid in Titan's lake can evaporate, change due to geological or meteorological processes, or be affected by the changing seasons on the moon.

Answer:

A. They must be kept separate from moisture and oxygen

Explanation:

Alkali metals refers to a group of chemical elements in the periodic table. It is the common name given to Group 1 elements (excluding hydrogen). They are generally metallic in nature with physical properties like shining lustre, silvery in appearance etc. Alkali metals include lithium, Pottasium, Sodium, Rubidium etc.

One important chemical property of alkali metals is their high reactivity i.e. they tend to react quickly with other substances. For example, alkali metals react vigorously with water to form hydroxides. They also react with oxygen to form oxides. Due to this highly reactive properties, they are kept or stored away from moisture (water) and oxygen (present in air).

Answer:

A reaction rate is generally the speed (or rate) at which a chemical reaction takes place. It is usually expressed in terms of volume or a unit of time.

Answer:

the speed at which a chemical reaction takes place

The result would be the production of 0.149 grammes of hydrogen gas. At STP, 1.64 litres of hydrogen gas will be created.

Simply put, STP is 0 °C (273.15 K) and 1 atm of pressure (the old standard). You may determine the volume of an ideal gas at STP by entering those numbers into the ideal gas law and using exactly 1 mole of gas. It has a 22.4 L volume.

The chemical equation for the reaction of sodium and water is as follows:

2Na + 2H2O → 2NaOH + H2

Determine how many moles of sodium are contained in 3.4 grammes:

sodium (Na) has a molar mass of 22.99 g/mol.

3.4 g/22.99 g/mol (moles of Na) is equal to 0.148 mol.

Na = 1/2 moles, H2 = 1/2 moles, 0.148 mol, and 0.074 mol, respectively.

Calculate the volume of hydrogen gas at STP using the ideal gas law:

PV = nRT

V = nRT/P

= (0.074 mol) × (0.0821 L·atm/mol·K) × (273 K) / 1 atm

= 1.64 L

Therefore, 1.64 liters of hydrogen gas will be produced at STP.

hydrogen (H2) has a molar mass of 2.02 g/mol.

moles of H2 = 0.074 mol

mass of H2 = moles of H2 × molar mass of H2

= 0.074 mol × 2.02 g/mol

= 0.149 g

Therefore, 0.149 grams of hydrogen gas would be produced.

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Explanation:

Respuesta: La masa atómica del carbono (C) es 12 g/mol; para el oxígeno (O) es de 16 g/mol. Esto significa que 6.022 x 1023 átomos de carbono pesan 12 gramos. Según esto, el peso molecular del CO2 es: 12 g/mol [C] + 2 x 16 g/mol [O2] = 44 g/mol

The event described when wind blows up the windward side, sand grains may be picked up and blown toward the top is  Dune movement.

The sand mass of dunes can move either windward or leeward, depending on if the wind is making contact with the dune from below or above its apogee.

If wind hits from above, the sand particles move leeward; the leeward flux of sand is greater than the windward flux.

Thus, the event described when wind blows up the windward side, sand grains may be picked up and blown toward the top is  Dune movement.

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Answer:

To convert joules to calories, you can use the conversion factor:

1 calorie = 4.184 joules

To find out how many calories are in 4,180 joules, divide the given value by the conversion factor:

4,180 joules / 4.184 joules per calorie = 0.9 calories (approximately)

Therefore, there are approximately 0.9 calories in 4,180 joules.

Answer:

58.94 mL

Explanation:

V1 = 48.3 mL             V2 = v mL

T1 = 22 degree celsius OR 295 k         T2 = 87 degree celsius OR 360 k

We will use the gas equation:

PV = nRT

Since the Pressure (p) , number of moles (n) and the universal gas constant(R) are all constants in this given scenario,

we can say that

V / T = k , (where k is a constant)

Since this is the first case,

V1 / T1 = k --------------------(1)

For case 2:

Since we have the same constants, the equation will be the same

V / T = k (where k is the same constant from before)

V2 / T2 = k (Since this is the second case) ------------------(2)

From (1) and (2):

V1 / T1 = V2 / T2

Now, replacing the variables with the given values

48.3 / 295 = v / 360

v = 48.3*360 / 295

v = 58.94 mL

Therefore, the final volume of the gas is 58.94 mL

The volume of the sample at the final temperature is 58.94mL

CHARLE'S LAW EQUATION:

V1/T1 = V2/T2

Where;

According to this question,

48.3/295 = V2/360

295 × V2 = 48.3 × 360

295V2 = 17388

V2 = 17388 ÷ 295

V2 = 58.94mL

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Answer:

potential of hydroxide

Explanation:

The period of the pendulum is defined as  time it takes the pendulum to make one full back-and-forth swing

The pendulum is a device that could be used to demonstrate oscillatory motion. We know that the pendulum has a long string that is fastened to a support. The bulb is displaced at a small angle and the period is the time that is taken to complete the cycle.

The kind of motion that is undergone by a pendulum is what we define as the oscillatory motion. It is a regular repeating motion and the acceleration is directed always towards the center of the motion.

We can tell that the pendulum swings from one side to the other and we could use the stop clock to measure the movement of the pendulum. Thus it follows that the period of the pendulum is defined as  time it takes the pendulum to make one full back-and-forth swing.

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