what will be the final result (how much ice/water/steam and what temperature) when you mix together equal parts ice at 0o c and steam at 100o c?

The following equation can be used to determine the equilibrium constant (Keq) for this reaction: Keq is equal to [SO3]2/[SO2][O2].

Since the concentration of SO3 in this situation is 0.250M at equilibrium, the Keq value is calculated as 0.2502 / (0.500 x 0.400) = 0.4.

Given that the Keq value is more than 1, this indicates that the reaction is marginally biassed in favour of the products.

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Answer:

pa brainliest answer po pa heart pa follow me and back

Explanation:

SUMMURY

Radiation is energy. It travels in the form of energy waves or high-speed particles. Radiation can occur naturally or be man-made. ... Ionizing radiation, which includes ultraviolet radiation, radon, x-rays, and gamma rays.

Radiation is energy that comes from a source and travels through space at the speed of light. This energy has an electric field and a magnetic field associated with it, and has wave-like properties. You could also call radiation “electromagnetic waves”.

DIFFENITION :

radiation

1a: the action or process of radiating

b: the process of emitting radiant energy in the form of waves or particles

c(1): the combined processes of emission, transmission, and absorption of radiant energy

(2): the transfer of heat by radiation

— compare CONDUCTION, CONVECTION

2a: something that is radiated

b: energy radiated in the form of waves or particles

3: radial arrangement

4: ADAPTIVE RADIATION

Answer: 0.27 M

Explanation:

molarity = (0.350)/(1.30) = 0.27 M

Answer:

1. Measuring the weight of an apple- scale.

2. Studying a distant object- telescope.

3. Studying a very small object- microscope.

4. Measuring the length of a book- ruler.

5. Measuring the temperature of a cup of tea- thermometer.

Explanation:

1. A scale or measuring scale is used to measure or take the weight of any object. It can be either an analog or digital scale as long as the measurements can be taken from it. So, measuring the weight of an apple can be done on a measuring scale.

2. A telescope is an instrument that is used in scientific, especially in space explorations, to study a distant object in the universe/ sky. It gives a clear image and enables a person to view things closer than they are. So, a telescope can be used to study distant objects.

3. A microscope is used to study very different small objects, such as microbes and other organisms. It enlarges the objects to be viewed and thus, enables them to be studied in detail.

4. A ruler may be used to measure the length of a book. It has indications or marks by which the lengths can be taken.

5. A thermometer is an instrument that is used to measure the temperature of anything, be it a person or even other things such as food and even a cup of tea.  

Answer:

Match each tool on the left with its most likely use on the right by choosing the correct number.

4

ruler

1

scale

2

telescope

5

thermometer

3

microscope

Explanation:

Elements are now organized by increasing atomic mass. Hence, option B is correct.

The periodic table is a tabular array of chemical elements organized by atomic number.

Mendeleev's periodic table orders the elements based on their atomic mass whereas the Modern periodic table orders the elements based on their atomic number.

Hence, option B is correct.

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In this question, we have photons with 0.237 J and 659 nm, now we need to find out how many photons there are in this situation, we can do that by looking at the energy of one single photon with the following formula:

E = h*f, since we don't have the f (frequency), we can use the relationship of frequency with speed of light and wavelength

E = h * c/λ

h is Planck's constant = 6.626*10^-34 J*s

c is the speed of light = 3.0*10^8 m/s

λ is the wavelength = 659*10^-9 m

E = 6.626*10^-34 * (3.0*10^8/659*10^-9)

E = 3.02*10^-19 J, this is the energy of a single photon

Now we can take the total energy, 0.237 J and check how many photons we have:

0.237/3.02*10^-19 = 7.85*10^17 photons

An example of how engineers have contributed to society is option D. The seven-mile bridge that spans across the Gulf of Mexico to connect two cities of the Florida Keys.

It is an example of how engineers have contributed to society. Engineers played a crucial role in designing, planning, and constructing the bridge, which provides an essential transportation link between the two cities.

The bridge enables efficient and safe travel, connecting communities, promoting economic development, and improving accessibility for residents and visitors. Engineering expertise is necessary to address various challenges such as designing a structure capable of withstanding environmental conditions, ensuring structural integrity, and incorporating appropriate safety measures.

This example showcases how engineers contribute to society by creating infrastructure that enhances connectivity and supports the growth and well-being of communities. The correct answer is option d.

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Since the dipole moment of gaseous AgCl is 11.5 D and the ionic character of AgCl is 78.1%, we can assume that the magnitude of the partial charge is 0.781.

Magnitude is a measure of the size, strength, or intensity of something. It can refer to physical objects, such as earthquakes, or abstract concepts, such as numbers or emotions. In physical sciences, magnitude is typically used to measure an object's size, intensity, or speed. In mathematics, magnitude is often used to indicate the size of a number, usually expressed as the absolute value. Magnitude is also used to describe the size of an emotion or feeling, such as happiness or sadness.

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This statement is true.

The dry adiabatic lapse rate is the average temperature dereses with heigh of 6.5 degree celsius.

What is adiabatic lapse?

The rate of decrease of temperature experienced by a parcel of air when it is lifted in the atmosphere under the restriction that it cannot exchange heat with its environment. For parcels that remain unsaturated during lifting, the (dry adiabatic) lapse rate is 9.8°C per kilometer.

it averages about 6.5 °C per kilometre (18.8 °F per mile) in the lower atmosphere (troposphere). It differs from the adiabatic lapse rate, which involves temperature changes due to the rising.

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For liquids smaller than water: Float lower than position in clear water, for liquids denser than water: In pure water and a liquid with the same density as water, it floats higher than the position: It floats in the same position as pure water.

A hydrometer or lactometer is an instrument used to measure the density or specific gravity of liquids, based on the concept of buoyancy. They are usually calibrated and graduated with one or more scales such as specific gravity. For liquids smaller than water: Float lower than position in clear water , for liquids denser than water: In pure water and a liquid with the same density as water, it floats higher than the position: It floats in the same position as pure water.

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H3O+ is overexposed before the equivalency point. By deducting the amount of additional OH- from the amount of starting H3O+ then dividing by the total volume, you may determine the [H3O+].

The capacity of an object is expressed in terms of volume. A cup's capacity is described as 100 ml, for instance, if it can hold 100ml in its brim. The quantity of space a three-dimensional item takes up can also be referred to as volume.

A three-dimensional object's volume, which is expressed in cubic units, is the amount of space it takes up. The cubic units cm3 and in3 are two examples. On the other hand, mass is a measurement of the amount of matter in an item. How much an object weighs is frequently used to determine mass.

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Answer:

Lots of people set the alarm with the best of intentions, knowing that's the time they need to get up to meet the day's demands. But then the alarm clock seems to ring way before they're ready to rise, so they're hitting snooze and, eventually, running late. Something's got to give.

The key lies inside your body. "An important factor in being able to wake up easily at the desired time in the morning is the timing of one's circadian rhythm, or 'body clock,'" says sleep researcher Leon C. Lack, PhD, professor emeritus in the school of psychology at Flinders University in Adelaide, Australia. Much of what you need to do to wake up on time starts by planning your sleep schedule the day and the evening before — and by making your mornings count.

How do our internal clocks work, and how much can we control them? According to the National Institutes of General Medical Sciences (NIGMS), the body’s master clock, located in the brain, produces and regulates our circadian rhythms, which help determine sleep patterns over the course of a 24 hour period. Environmental signals, such as daylight and darkness, affect circadian rhythms, too. When incoming light hits the optic nerves, information is passed along from the eyes to the brain. When there is little or no light — at night — your clock tells the brain to make more melatonin, a hormone which makes you sleepy.

Our sleep-wake cycles, hormone levels, metabolism, and body temperature are all affected by our circadian rhythms, notes the National Institute of Neurological Disorders and Stroke. When your rhythm is off, you may be at risk for more than just a few groggy days you drag yourself through. Irregular rhythms, the NIGMS notes, have been linked to chronic health conditions, such as obesity, diabetes, depression, bipolar disorder, and seasonal affective disorder.

But there are ways to recalibrate your system to get the sleep you need and wake up feeling refreshed and ready for the day ahead. Physiological and psychological factors come into play, and it’s not always easy to get a good night’s rest or adhere to a schedule so that you consistently go to sleep and get up around the same time each day.

is going on

Answer:

High melting point.

Explanation:

An example of a high melting point would be: 4215 K (3942 °C, 7128 °F).

Answer:

High melting point.

Explanation:

Explanation:

The periodic table brings order to information about the chemical elements. It helps chemists to understand why elements react as they do. Elements in the same group have similar chemical properties. This is because they have the same number of outer electrons and the same valency

Using the formula for Graham's law, we can calculate that the molar mass of the unknown gas is 91.93 g/mol.

Graham's law establishes the connection between rates of effusion of two gases (RoE) and their molar masses (M):

\(\frac{R o E (A)}{RoE(B)} = \sqrt{\frac{M(B)}{M(A)} }\)

We know that:

\(\frac{R o E (N_{2} )}{RoE(X)} =1.812= \sqrt{\frac{M(X)}{M(N_{2} )} }\)

The molar mass of nitrogen gas is calculated by using the relative atomic mass of the nitrogen atom (14 amu).

M(N₂) = 2 * 14 g/mol

M(N₂) = 28 g/mol

Now, if we square both sides of Graham's law equation, we can say that:

(1.812)² = M(X) / 28 g/mol

M(X) = 28 g/mol * (1.812)²

M(X) = 91.93 g/mol

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The Earth's atmospheric CO2 concentration was around 280ppm before human activities, but since the Industrial Revolution, burning fossil fuels has increased it to above 400ppm, well outside the range.

The concentration of CO2 in the Earth's atmosphere prior to significant human influences was 280ppm.

Before human activities, such as burning fossil fuels, deforestation, and industrial processes, the concentration of carbon dioxide in the atmosphere was relatively stable for thousands of years. This pre-industrial concentration of CO2 was around 280 parts per million (ppm).

To put it into perspective, 280ppm means that for every million molecules of air, around 280 of them were CO2 molecules. This level was maintained through a balance between natural sources of CO2, like volcanic activity and respiration, and natural sinks, such as photosynthesis and ocean absorption.

Since the Industrial Revolution, the burning of fossil fuels has significantly increased the concentration of CO2 in the atmosphere. Currently, the concentration is above 400ppm, which is considered to be well outside the range seen in the past 800,000 years.

In summary, the concentration of CO2 in the Earth's atmosphere prior to significant human influences was approximately 280ppm.

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Answer:

it is a chemical process

Explanation:

rusting is the formation of reddish-brown ferric oxides on iron by low-temperature oxidation in the presence of water.

The chemical formula for rust is Fe2O3 and is commonly known as ferric oxide or iron oxide. The final product is a series of chemical reactions simplified below as- The rusting of the iron formula is simply 4Fe + 3O2 + 6H2O → 4Fe(OH)3. The rusting process requires both the elements of oxygen and water.

A cell containing 97% h₂o is placed into a 90% h₂o  solution. the solution is to the cell and there the size of the cell will shrink .

             Solute + Solvent = Solution

The cell will cremate because the water in the solution will gets released and there the state of equilibrium exists and that can be determined as Hypertonic solution.

A liquid that has a higher concentration of dissolved particles than regular cells and blood do, like salt and other electrolytes. For instance, wounds are soaked in hypertonic liquids.

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Rectal temperature is deducted from the average body temp of 98 farenheit since the algorithm estimates that body loses 1.5 degrees every hour.The period since death is roughly calculated by dividing the differences between the two by 1.5.

The Glaister Equation determines the number of hours that elapse after dying as a linear model of the decedent's body temperature.(98.7 degrees Fahrenheit - the deceased's body temperature).

Skin and bone cells can continue to function for several days.A human body takes about 12 hours so cool to the feel & 24 hours too cool completely.Following three hours, rigor mortis begins and lasts for 36 hours following death.

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Answer: Changing the number of electrons will change the overall charge on an atom.

Explanation:

An atom that loses electrons will become positively charged and an atom with added electrons will become negatively charged. ... A charged atom is called an ion.

Answer:

That's kind of a weird question. A lot though.

Explanation:

lot

goofy ahhAnswer:

a

Explanation:

Answer:

Explanation:

h

In a 2.50-L container with 56 g each of nitrogen and carbon dioxide gases added at 25°C, the partial pressure of nitrogen gas is 4.89 atm. The root mean square speed of an A₂ molecule at 0°C is approximately 8.65 m/s. None of the given options are correct.

Q1. We need to find the partial pressure (atm) of nitrogen gas in a 2.50−L container into which 56 g of each nitrogen and carbon dioxide gases are added at 25°C. Let's begin:
56g of N₂ will be equal to moles of N₂ = (56/28) = 2 mol N₂
56g of CO₂ will be equal to moles of CO₂ = (56/44) = 1.27 mol CO₂

Total moles of gas = 2 + 1.27 = 3.27 moles
Molar mass of N₂ = 28 g/mol
Ideal Gas equation = PV = nRT
Partial pressure of N₂ = P_N₂ = (n_N₂ * RT) / V
Where,
n_N₂ = number of moles of N₂ = 2 mol
R = gas constant = 0.08206 L atm K⁻¹ mol⁻¹
T = temperature in kelvin = (25 + 273.15) K = 298.15 K
V = volume of container = 2.50 L

Substituting the values in the formula, we get:
P_N₂ = (2 mol * 0.08206 L atm K⁻¹ mol⁻¹ * 298.15 K) / 2.50 L
P_N₂ = 4.89 atm

Therefore, the partial pressure (atm) of nitrogen gas in a 2.50−L container into which 56 g of each nitrogen and carbon dioxide gases are added at 25°C is 4.89 atm.

None of the given options are correct.

Q2. We need to find the root mean square speed (m/s) of an A₂ molecule (atomic mass =6amu ) at 0°C. Let's begin:

The root mean square speed (v rms) of an ideal gas is given by the formula:
v rms = √(3RT / M)
Where,
R = gas constant = 8.314 J/mol K
T = temperature in kelvin = 0 + 273.15 K = 273.15 K
M = molar mass of the gas = 6 g/mol = 6 / 1000 kg/mol = 0.006 kg/mol

Substituting the values in the formula, we get:
v rms = √(3 * 8.314 J/mol K * 273.15 K / 0.006 kg/mol)
v rms = √(3 * 8.314 J/mol K * 273.15 K / 6 * 10⁻³ kg/mol)
v rms = √(74.81)
v rms = 8.65 m/s (approx.)

Therefore, the root mean square speed (m/s) of an A₂ molecule (atomic mass =6amu ) at 0°C is 8.65 m/s (approx.).

None of the given options are correct.

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Complete Question:

Q24: What is the partial pressure (atm) of nitrogen gas in a 2.50-L container into which 56 g of each nitrogen and carbon dioxide gases are added at 25°C ? A) 39.00 B) 39.10 C) 17.90 D) 19.55 B) 15200

Q25: Calculate the root mean square speed (m/s) of an A2 molecule (atomic mass =6amu) at 0°C. 4) 1506 B) 1.135×10⁶ C) 1065.0 D) 1065.3 E) 753

The most likely formula for the solid formed is [Cr(OH)3].

When NaOH is added to a solution of chromium (III) ions at a pH of 4 until the pH reaches 7, a solid powder is formed. The most probable formula of the formed solid is [Cr(OH)3].

Explanation: Chromium (III) ions contain a +3 charge; thus, the addition of NaOH solution produces a precipitate of chromium hydroxide. When a base like NaOH is added to the solution of chromium ions, it reacts with the hydrogen ions (H+) from the acid to produce water and hydroxide ions (OH-).Cr3+ + 3OH- → Cr(OH)3

The formula for the solid formed can be determined by the charge balance of the ions in the chemical reaction.

Chromium (III) hydroxide is formed by the combination of three hydroxide ions (OH-) and one chromium (III) ion (Cr3+). Therefore, the correct formula of the solid formed is [Cr(OH)3].

Finally, it can be concluded that when a solution of chromium(III) ions at a pH of 4 is treated with NaOH until pH reaches about 7, the most likely formula for the solid formed is [Cr(OH)3].

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Mass of magnesium ribbon is 0.21 g.

Mass of oxygen gas reacts with magnesium is 0.11 g

Number of moles of magnesium is 0.00875

Number of moles of oxygen is 0.0068.

Ratio of moles of magnesium and oxygen = 1.2 : 1

The number of moles of a substance equals the ratio of its given mass in a chemical reaction to the mass of one mole of that substance. One mole of any substance equals Avogadro's number, that is, 6.023 × 10²³.

we know that mass of crucible and lid = 35.56 g

mass of crucible and lid and magnesium = 35.77 g

Thus mass of magnesium = 35.77 - 35.56 = 0.21 g

mass of crucible and lid and magnesium oxide = 35.88 g

thus, mass of oxygen = 35.88 - 35.77 = 0.11 g

Now, Number of moles of magnesium = 0.21/24 =  0.00875

         Number of moles of Oxygen = 0.11/16 = 0.0068

Ratio of Number of moles of magnesium to Number of moles of Oxygen = 0.00875/0.0068 = 1.2 : 1.

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Answer:

highly unstable

Explanation:

also, due to repulsion of lone pairs and instability it breaks and can't form PI5

hope that helps....

The table is based on the periodic table and is to be filled by finding out various elements of periodic table

Disclaimer:

The table given below is not clear and hence only general idea can be provided

The table is based on the idea of periodic table where various constituents such as mass number, overall charge , total particles, number of protons have been asked to be labelled.

Sodium has been solved as an example and various postulates of Cu is being provided to solve accordingly

In the constituents of element Cu

Name- Cuprous and Cupric

Atomic number-29

Mass number-63

overall charge-+2 for Cuprous and +3 for Cupric

Total particles in nucleus-63

number of protons -29

number of neutrons-34

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Answer:

Pupa Stage

Explanation:

Silk worm consists of four stages- the adult, the egg, the larva (caterpillar) and the pupa stage.