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In your school’s chemistry lab, you use a U-shaped apparatus with a semipermeable membrane at the bottom to test the osmotic pressure of two different substances dissolved in water. The substances you test are 1.0 molar ammonia (NH3) and 1.0 molar hydrochloric acid (HCl). As a control, you also test the osmotic pressure of pure water.
Which substance produced which result?

Answer: B 8.40 g

Explanation:

Answer:

the one that has more power to it

i) diffusion, concentration differences in gas and fluid disappears when particles of sugar are evenly spread in solution

ii)  Heating the solution, mixing the solution

b)  Distillation, solution is heated until water is vaporized and water vapour condenses in another part of apparatus.

Sugar is separated from water by evaporation of the sugar solution to dryness.

i) The process of that causes the sugar to spread throughout the water is called solvation.  Solvation simply refers to the interaction of a solute and a solvent.

ii) To make the sugar to dissolve quicker;

b)To obtain pure water from sugar, the sugar is evaporated to dryness. This is done by heating the sugar in a set up as shown in the image attached.

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Answer:

Because Sulphuric acid(H2SO4) is one of the substance which have a very high vigourous reaction if mix with chemicals thats why we take the same sulphuric acid but having lighter effects known to be as Dil.Sulphuric And so it is generally use for precaution while during experimentations Thats why we use it.

Hope it helps

Answer:

you diba ikaw ang nagpamalimali diba no

Answer:

2 iron atoms in Fe2O3

Answer:

CO2; succinyl-SCoA

Explanation:

Citric acid cycle, also called Krebs cycle is the second stage of aerobic cellular respiration, which occurs in the mitochondrion. The kreb's cycle is made up of 7 distinct steps, with each involving series of enzymatic reactions.

According to this question, step 3 and 4 of the citric acid cycle involves an oxidation and decarboxylation reaction to produce 2 molecules of carbon dioxide (CO2) and a 4-carbon compound called succinyl group. A coenzyme A binds to the succinyl group to form succinyl-SCoA.

it's 75 k bro thats the answer

Answer:

its a

Explanation:

a

Answer:

48 °C

Explanation:

q = 90J

m = 15 g

C = 0.126 J/gºC

q = mct

90 = (15)(0.126)t

t = 47.62 °C = 48 °C

Answer:

Explanation:

Formula

E = m * c * Δt

Δt is what you seek.

Givens

E = 90 joules

m = 15 grams

c   = 0.126

Solution

90 = 15 * 0.126 * Δt         Divide by 15

90/15 = 15/15 * 0.126 * Δt

6 = 0.126 * Δt                  Divide by 0.126

6/0.126 = Δt

47.619 = Δt

Δt = 48 oC

it is held every 4-5 years

Answer:

[tex]26.25mL \ O_2[/tex]

Explanation:

¡Hola!

En este caso, dado que se nos da reacción de combustión del benceno, primero debemos balancearla como se muestra a continuación:

C₆H₆ + ¹⁵/₂ O₂ → 6CO₂ + 3H₂O

Vemos que hay una relación molar entre el benceno y oxígeno de 1:¹⁵/₂, por lo que la relación de volúmenes es:

[tex]3.5 mL\ C_6H_6*\frac{15/2\ mL\ O_2}{1mL\ C_6H_6} \\\\=26.25mL \ O_2[/tex]

¡Saludos!

Answer:

D. control rods are

I hope dis helps :3

Brakers are to a car as control rods are to a nuclear-fission chain reaction. The correct option is D.

A chain reaction occurs when neutrons generated during fission cause subsequent fission in at least one more nucleus.

This nucleus creates neutrons, and the cycle continues.

The process can be either controlled (nuclear power) or uncontrolled (nuclear weapons) (nuclear weapons).

Thus, the correct option is D. control rods are.

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Answer:

100.14°C

Explanation:

The boling point elevation is a colligative property that describes the increasing in boiling point of a solution regard to the boiling point of the pure solvent. The equation is:

ΔT = Kf*m*i

Where ΔT is boiling point elevation

Kf is boiling point elevation (0.51°C/m for water)

m is molality of the solution (7moles Ba(NO3)2 / 75kg = 0.09333m

i is Van't Hoff factor = 3 for Ba(NO3)2 (Because its dissolution produce 3 ions = Ba²⁺ and 2 NO₃⁻

Replacing:

ΔT = 0.51°C/m*0.09333m*3

ΔT = 0.14°C is the boiling point elevation

As the boiling point of water is 100°C, the boiling point of the solution is:

100°C + 0.14°C =

Answer:

it's A.

Explanation:

have uh good day ma :)))))))

Answer:

Synthesis Reaction

Explanation:

A synthesis reaction occurs when two or more reactants combine to form a single product. In a decomposition reaction, one reactant breaks down into two or more products. This is the reverse of a synthesis reaction. Replacement reactions occur when elements switch places in compounds.

Answer:

Explanation:

The chemical formula of nitrogen is N2

A mol of Nitrogen atoms = 14 grams

So N2 will have a molar mass of 14 * 2 = 28 grams

number of moles of N2 = given mass / molar mass

number of moles of N2 = 12 / 28

number of moles of N2 = 0.4286 mols

Answer:

The model cannot show how light bends.

Explanation:

Answer:

   ‏‏‎ ‎

Explanation:‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎

Answer:

A) covalent bond

Explanation:

Covalent bonding generally happens between nonmetals.

Answer:

Molecular formula => C₃H₈O₃

Explanation:

From the question given above, the following data were obtained:

Carbon (C) = 39.12%

Hydrogen (H) = 8.75%

Oxygen (O) = 51.12%

Molar mass of compound = 92.09 g/mol

Molecular formula =?

Next, we shall determine the empirical formula of the compound. This can be obtained as follow:

C = 39.12%

H = 8.75%

O = 51.12%

Divide by their molar mass

C = 39.12 / 12 = 3.26

H = 8.75 / 1 = 8.75

O = 51.12 / 16 = 3.195

Divide by the smallest

C = 3.26 / 3.195 = 1

H = 8.75 / 3.195 = 2.7

O = 3.195 / 3.195 = 1

Thus, the empirical formula is CH₂.₇O

Finally, we shall determine the molecular formula of the compound. This can be obtained as follow:

Empirical formula = CH₂.₇O

Molar mass of compound = 92.09 g/mol

Molecular formula =?

Molecular formula = Empirical formula × n

Molecular formula = [CH₂.₇O]ₙ

92.09 = [12 + (2.7×1) + 16] × n

92.09 = 30.7n

Divide both side by 30.7

n = 92.09 / 30.7

n = 3

Molecular formula = [CH₂.₇O]ₙ

Molecular formula = [CH₂.₇O]₃

Molecular formula = C₃H₈O₃

Answer:

los metales alcalinotérreos: berilio (Be), magnesio (Mg), calcio (Ca), estroncio (Sr), bario (Ba) y radio (Ra).

o simplemente llamado grupo 2A

Explanation:

Answer:

600 mL

Explanation:

molarity 1 * volume 1 = molarity 2 * volume 2. So this means 12 * 250 = 3000 and divide that by 5 to get 600 mL.

A blue light is shined on objects X and Y. Object X appears to be blue, and object Y appears to be black when Object X reflects blue light, and object Y absorbs blue light. Hence option B is correct.

Visible light spectrum is nothing but the range of wavelength of radiation from 4000 angstrom to 7000 angstrom(Violet to Red). light is a energy packet. Every Photon having different wavelength travels with same velocity c (velocity of light). When we focus numbers of colors from visible spectrum to a point, that point appears as a white light. hence white light is composed of numbers of Colors in it.

When we pass white light through a prism, as white light enters in the prism all the colors having different wavelength travels with different velocity in the prism due to that there is separation of colors from the white light. Therefore we get different colors of white light in the prism this phenomenon is know as dispersion of light.

Light can be reflected, absorbed, transmitted diffracted and scattered etc.

α + β + ν = 1 where α, β, ν are coefficient of absorption, reflection and transmission.

When any object appears to be black it means that radiation has been absorbed by that body, it has high absorption coefficient. and when a body appears to be colored, it means that object has reflected the particular color, it having high reflection coefficient.

Hence option B is correct.

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#SPJ2.

Answer:

Deci trebuie sa te aplici cu 2 din3 pe suprafata pamanyului chinez

Explanation:

Deci 1287+2086+2762+7:5

Answer:

[tex]p_2=2.655kPa[/tex]

Explanation:

Hello there!

In this case, according to the Dalton's law, which states that the total pressure is equal the sum of the pressures of the gases in the mixture, we write the following for this system:

[tex]P_T=p_1+p_2[/tex]

Thus, we solve for the partial pressure of the gas #2 as shown below:

[tex]p_2=P_T-p_1\\\\p_2=5kPa-2.345kPa\\\\p_2=2.655kPa[/tex]

Best regards!

Answer: D. The number of protons in the nucleus changes.

Explanation:

Transmutation occurs due to a change in the number of protons in the nucleus as this will cause the element to either become another isotope of the same element or an entirely new element altogether.

There are two types of transmutation; Natural and Artificial. Natural transmutation happens as unstable elements such as Uranium-238 try to find stability. They decay until they become a stable element. Artificial transmutation happens when atoms are collided with particles that cause them to change.