Se tiene un litronde solucion de agua con alcohol con una consentracion del 4.5% v/v ¿Cuanto alcohol se tiene en la solución

Answer:

caca123

Explanation:

UM

Answer:

Neon

(if you want a thorough explanaion, just ask for one)

It is C! <3

The reason it's C because pt3 is Sugar science name get it?

Answer:

Answer is meter. ~~~~~~

Answer:

Explanation:

To find the pressure in kPa we use the conversion

If 1 atm = 101.3 kPa

400 atm = 400 × 101.3 = 40520 kPa

Expressing it in standard form we have the final answer as

Hope this helps you

Answer: 3.04 x 10 mm Hg

Explanation:

Answer:

carbon dioxide makes up the variety of greenhouse gas emission from the sector but smaller amount of methane nitrous oxide are also emmited and all these gases are released during the combustion of fossil fuels, such as coal,oil and natural gas, to produce electricity

Answer:

Suppose a piece of iron with a mass of 21.5 g at a temp of 100.0 °C is dropped into an insulated container of water. The mass of the water is 132.0 g and its temperature before adding the iron is 20.0 °C. What will be the final temp of the system? Specific heat of iron is 0.449 kJ/kg K.

Solution:

1) Since

qlost, metal = qgained, water

we write

(mass) (Δt) (Cp, metal) = (mass) (Δt) (Cp, water)

2) Substituting:

(21.5) (100 − x) (0.449) = (132.0) (x − 20) (4.184)

Some explanation:

a) 100 − x is the Δt for the metal; it starts at 100.0 °C and drops to some unknown, final value.

b) x − 20 is the Δt for the water; it starts at 20.0 °C and rises to some unknown, final value.

c) Since both metal and water wind up at the same ending value, we need to use only one unknown for the two Δt expressions.

3) A wee bit of algebra:

(2150 − 21.5x) (0.449) = (132x − 2640) (4.184)

965.35 − 9.6535x = 552.288x − 11045.76

561.9415x = 12011.11

To 3 sig figs, the answer is 21.4 °C.

Explanation:

hope its correct!

Answer:

En la imagen adjunta.

Explanation:

¡Hola!

En este caso, dados los lineamientos IUPAC que tenemos en cuenta para dibujar la estructura de hidrocarburos cíclicos, para el 1,4-ciclohexadieno, es posible determinar que esta estructura viene dada por hexágono que representa el ciclohexano y dos dobles enlaces en los carbonos 1 y 4 al ser un dieno. Por lo anterior, en la imagen adjunta, puede encontrar la estructura requerida.

¡Saludos!

Answer:

I do not know how to solve this bit i THINK 38.56

Explanation:

Answer:

The thermal energy (heat) needed, to raise the temperature of oil of mass  'm' kilogram and specific heat capacity 'c' from 20°C to 180°C  is  160·m·c joules

Explanation:

The heat capacity, 'C', of a substance is the heat change, ΔQ, required by a given mass, 'm', of the substance to produce a unit temperature change, ΔT

∴ C = ΔQ/ΔT

ΔQ = C × ΔT

C = m × c

Where;

c = The specific heat capacity

ΔT = The temperature change = T₂ - T₁

∴ ΔQ = m × c × ΔT

Therefore, the thermal energy (heat) needed, ΔQ, to raise the temperature of oil of mass 'm' kilogram and specific heat capacity, 'c' from 20°C to 180°C  is given as follows;

ΔQ = m × c × (180° - 20°) = 160° × m·c

ΔQ = 160·m·c joules

Answer:The video shows the electric circuit inside a flashlight. The battery provides power to the circuit. A metal strip is connected to the negative end of the battery. When the flashlight’s switch is pressed, the metal strip moves forward. It touches the metal connected to the bulb near the front. This motion closes the circuit, which creates a path for the electricity and causes the bulb to glow.

Explanation: plato

The electric circuit within a flashlight is powered by the battery. See below for more information.

A circuit is a route that allows an electrical current to flow between two or more paths.

An electronic circuit comprises electronic components such as resistors or diodes joined by a metallic wire that conducts electricity and through which current flows.

From the video in the content;

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Answer:

fluid D

Explanation:

Fluid D has the highest viscosity because it is more difficult for it to move which makes it hit the table at 15 seconds

while fluid C has the lowest Viscocity which makes it move easily and it hit the table fastest

Answer:

i'm thinking 27.6 not sure

Explanation:

The stable nuclei can be identified if the count of proton and neutron are same then nuclei will be stable.

That kind of nuclei which posses identical number of proton and neutron as well can be referred as stable nuclei. For example: The isotope of carbon [tex]C^{12}[/tex] has 6 proton and 6 neutron as well. Hence it might be considered as stable nuclei.

A hydrogen atom's nucleus contains positively charged protons. Protons, electrons, as well as neutrons, make up an atom.

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The percentage of CO2 increased 48 percent. Hope this helped!

Another type of weathering that attacks rocks is chemical weathering, a process that breaks down rock through chemical changes. The causes of chemical weathering include action of water, oxygen, carbon dioxide, living organisms, and acid rain. Chemical weathering can produce new minerals as it breaks down rock.

Explanation:

Answer:

C

Explanation:

First there is no chemicals involved so cross out B and D. Wind turbines are made to create energy not to convert it so A is crossed out as well. The remaining answer is C.

The energy is transformed from mechanical to electrical when the blades are spinning, as shown.

Wind turbines are large fans that convert the kinetic energy of wind into electrical energy.

The blades run by winds and generate electricity.

They are helpful, but they are a threat to birds and bats.

Thus, the correct option is C, mechanical to electrical energy.

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Answer:

Its when like two pure substances are like combined into one.

Explanation:

Answer:

True

Explanation:

US. With an installed capacity of 3,639MW in 2018, the US is the leading producer of geothermal energy across the world, producing 16.7 billion kilowatt hours (kWh) of geothermal energy throughout the year. More recently, extensive direct heat utilization projects have been undertaken in many European countries, and electric power developed extensively in Italy and Iceland. Geothermal heat pumps became extensively used in Austria, Switzerland, Germany and Sweden (Antice, Miklos and Sanner, Burkhard, 2007).

Answer:

20 Liters

Explanation:

Boyles Law => ΔP ∝ 1/ΔT => P₁V₁ = P₂V₂ => V₂ = P₁V₁/P₂

P₁ = 2 atm

V₁ = 10 Liters

P₂ = 1 atm

V₂ = ?

V₂ = 2atm x 10L / 1atm = 20 Liters

Answer:

There are 0.311 moles of  gas in the tank

Explanation:

Complete question

A 4.00g sample of gas is found to exert a pressure of 1.71 atm when confined in 3.60L container at a temperature of 241 K. Find the number of moles of the gas

Solution

As we know

[tex]PV = nRT[/tex]

where P is the pressure of the gas in atm

V is the volume in liters

n is the number of moles

R is the gas constant = 0.08206 L·atm/K·mol

and T is the temperature in Kelvin

Substituting the given values in above equation, we get -

[tex]1.71 * 3.60 = n * 0.08206 * 241\\n = 0.311[/tex]

There are 0.311 moles of  gas in the tank

Answer:

the molecular formula of a compound is P₄O₁₀.

M(P₂O₅) = 2 · Ar(P) + 5 · Ar(O) · g/mol.

M(P₂O₅) = 2 · 31 + 5 · 16 · g/mol.

M(P₂O₅) = 142 g/mol; molar mass of empirical formula.

M(PₓOₙ) = 284 g/mol; molecular mass of unknown compound.

M(PₓOₙ) : M(P₂O₅) = 284 g/mol : 142 g/mol.

M(PₓOₙ) : M(P₂O₅) = 2 : 1.

Explanation:

The  empirical formula is [tex]P_{2}O_{5}[/tex]  and The molecular formula is [tex]P_{4}O_{10}[/tex]

[tex](\frac{47.3g}{1})( \frac{1 mol}{30.97g})= 1.41 moles[/tex] of Phosphorus.

[tex](\frac{56.3}{1})(\frac{1 mol}{16}) = 3.51 moles[/tex] of Oxygen

3.51/1.41 = 2.49 (rounded off 2.5)

1.41/1.41 = 1

2.5 *2 = 5 (Oxygen)

2 *1 = 2 (Phosphorus)

Hence  [tex]P_{2}O_{5}[/tex]  is Empirical formula

and [tex]P_{4}O_{10}[/tex] is Molecular Formula

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Answer:

0.00331M

Explanation:

Molarity of a solution can be calculated as follows:

Molarity = number of moles (n) ÷ volume (V)

In the information provided in this question, the volume = 502mL = 502/1000 = 0.502L, mass of caffeine = 0.322g

Molar mass of caffeine (C8H10N4O2), where C = 12, H = 1, N = 14, O = 16 is as follows:

Molar mass = 12(8) + 1(10) + 14(4) + 16(2)

= 96 + 10 + 56 + 32

= 194g/mol

Using, moles = mass/molar mass

moles = 0.322/194

moles = 1.66 × 10-³ moles

mole = 0.00166mol

Molarity = number of moles ÷ volume

Molarity = 0.00166mol ÷ 0.502L

Molarity = 0.00331M.

A solute is a substance that is dissolved in another substance (option A).

A solute is any substance that is dissolved in a liquid solvent to create a solution.

This means that a solute + solvent = solution. For example; sugar (solute) is dissolved in water (solvent) to form a sugary solution.

Therefore, a solute is a substance that is dissolved in another substance.

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A solute is any substance that is dissolved in another substance (Option A).

A solute is any type of substance whose molecules are able to form chemical bonds with molecules of solvent in a solution.

Solutes include, for example, hydrophilic substances that dissolve into water such as glucose, cellulose, aminoacids , etc.

In conclusion, a solute is a substance dissolved into another (Option A).

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Answer:

Mass of Oxygen is equal to 0.005566 grams

Explanation:

As we know,

ppm=(grams of solute/grams of solution)*1,000,000

Substituting the given values, we get -

23 ppm = (grams of solute/242.0066 grams)*1,000,000

1 ml = 1 gram

On solving the above equation, we get -

grams of solute = (23 * 242.0066)/1,000,000

= 0.005566 grams

Mass of Oxygen is equal to 0.005566 grams