Which of the following did you include?

The atoms in each ion are bonded together covalently to form a single unit.

The charge is distributed over the entire ion.

The formula of ammonium fluoride is NH4F.

The formula of potassium sulfate is K2SO

Answer:

-security hardware

- artificial intelligence

wifi, internet, phones, voice assistants, drones.

Explanation:

decrease T = eq shifts left, because youre taking energy from the system and this is an endothermic reaction, it needs energy to make products = co2 concentration decreases

add CO = eq shifts right, because you're adding reactants in the equilibrium = i2o5 concentration decreases

increase i2o5 = same = can't affect T

decrease co2 = eq shifts right, because by

decreasing co2 you'll have less of this product than you normally have in the equilibrium, then eq will shift toward making more product = both reactants, CO and I2O5 decrease their concentration because they're being used to shift equilibrium right

The mass percent of water in IrBr₃･4 H₂O is  14.4%.

To find the mass percent of water in  IrBr₃･4 H₂O, first determine the mass of water present in the compound and then divide it by the total mass of the compound and multiply by 100 to express the answer as a percentage.

Let's assume that the molecular weight of IrBr3•4 H2O is 500 g/mol. In that case, the mass of water present in the compound would be 4 x 18 g/mol (the molecular weight of water) = 72 g. The total mass of the compound is 500 g, so the mass percent of water in  IrBr₃･4 H₂O can be calculated as follows:

(72 g / 500 g) x 100 = 14.4%

So, the mass percent of water in IrBr₃･4 H₂O is 14.4%.

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To create 100 mL of solution with a concentration of 1.5 M, 6.00 grams of NaOH are required.

The amount of NaOH needed to make 100. mL of solution with a concentration of 1.5 M can be calculated using the formula:

mass = molarity x volume x molar mass

where:

molarity = 1.5 M (given)

volume = 100. mL = 0.1 L (given)

molar mass of NaOH = 40.00 g/mol (from periodic table)

Substituting the values, we get:

mass = 1.5 mol/L x 0.1 L x 40.00 g/mol

mass = 6.00 g

Therefore, 6.00 grams of NaOH are needed to make 100. mL of solution with a concentration of 1.5 M.

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when a chemical change is complete the reactant before the chemical reaction and the product after the chemical reactant will weigh same.

According to the law of mass of conservation : the mass in the chemical reaction is neither be created nor be destroyed. This means the the total mass of the reactant before the chemical reaction and the mass of the product after the reaction is same. we can say that atoms in the reactant side is equal to the atoms in the product side.

Thus, when a chemical change is complete the reactant before the chemical reaction and the product after the chemical reactant will weigh same.

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Answer:

is there a picture or something?

Explanation:

Explanation:

Your question is incomplete please update it.

Answer:

An increased population in younger women. Studies show that younger women may have more children.

I can't put too much complex information or brainly will delete this.

I hope this answers your question! Thanks, and have a wonderful day.

In an ecosystem with an increase in population of young women there can be an increase in the number of births.

Ecosystem is defined as a system which consists of all living organisms and the physical components with which the living beings interact. The abiotic and biotic components are linked to each other through nutrient cycles and flow of energy.

Energy enters the system through the process of photosynthesis .Animals play an important role in transfer of energy as they feed on each other.As a result of this transfer of matter and energy takes place through the system .Living organisms also influence the quantity of biomass present.By decomposition of dead plants and animals by microbes nutrients are released back in to the soil.

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Answer:

False

Explanation:

Answer:

Answer is letter B

Explanation:

The first one is wrong because acids release H+, not bases.

The third one is wrong because the pH is exactly 7, not greater.

The last one is wrong because it is vague and does not fit a neutralization reaction.

11.70KJ is the amount of heat needed to raise the temperature of 350 g of water from 20ºC to 100ºC.s the amount of heat needed to raise the temperature of 350 g of water from 20ºC to 100ºC.

Heat is the energy that moves through one body to another if the temperatures are different. Energy is transmitted when two bodies with differing temperatures come in contact; heat moves from the warmer object to the cooler.

Usually, but just not always, this energy transfer results in a rise inside the temperature of something like the colder body as well as a fall inside the temperature of something like the hotter body.

q = m×c×ΔT

q = 350×4.18×(100- 20)

    =350×4.18×80

    =11.70KJ

Therefore, 11.70KJ is the amount of heat needed to raise the temperature of 350 g of water from 20ºC to 100ºC.

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Answer:

6144

Explanation:

There are 5.43 x 10²³ present in  187 grams of XeF₄

The mole is the number of particles(molecules, atoms, ions) contained in a substance  

1 mol = 6.02.10²³ particles

Can be formulated

N=n x No

N = number of particles

n = mol

No = Avogadro's = 6.02.10²³

Moles can also be determined from the amount of substance mass and its molar mass

\(\tt n(mol)=\dfrac{mass(m)}{MW}\)

mass of XeF₄ = 187 g

mol XeF₄ (MW=207,2836 g/mol) :

\(\tt mol=\dfrac{187}{207,2836 g/mol}=0.902\)

Number of molecules :

\(\tt N=0.902\times 6.02\times 10^{23}\\\\N=5.43\times 10^{23}\)

The final temperature of the water after the ice melts, given that the water has an initial temperature of 62.39°C, is 63.06 °C

We can obtain the final temperature of the water after the           ice melts as follow:

Heat of cold = -heat of warm

ML + MC(T – Tᵢ) = -MᵥᵥC(T – Tᵥᵥ)

(12.68 × 334) + [12.68 × 4.184 (T - 0)] = -316.81 × 4.184 (T - 62.39)

4235.12 + 53.05312T = -1325.53304T + 82700.0063656

Collect like terms

53.05312T + 1325.53304T = 82700.0063656 + 4235.12

1378.58616T = 86935.1263656

Divide both sides by 1378.58616

T = 86935.1263656 / 1378.58616

T = 63.06 °C

Thus, from the above calculation, we can conclude that the final temperature is 63.06 °C

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Answer:

(1). Mole fraction = 0.152 for sulfur tetrafluoride gas.

Mole fraction = 0.848 For dinitrogen monoxide gas.

(2). Partial Pressure for dinitrogen monoxide gas = 187 kPa

Partial Pressure for sulfur tetrafluoride gas = 33.4 kpa.

(3). Total Partial Pressure = 220.4 kpa.

Explanation:

So, we are given the following data or parameters or information in the question above;

• Volume of the tank = 5.00L per tank;

• Temperature of the tank = 7.03°C;

• The mass of the content in the tank =

17.7g of dinitrogen monoxide gas and

7.77g of sulfur tetrafluoride gas.

So, we will be making use of the formulae below to calculate the MOLE FRACTION:

Moles, n= mass/molar mass and mole fraction = n(1)/ n(1) + n(2) per each constituents.

Moles, n1 = 17.7g of dinitrogen monoxide gas/ 44 grams per mole. =0.4023 moles.

Moles, n2 = 7.77g of sulfur tetrafluoride gas/ 108.1 grams per mole. = 0.07188 moles.

Total numbers of moles = n1 + n2 = 0.47415 moles

Mole fraction =0.4023 / 0.47415 = 0.848 of dinitrogen monoxide gas.

Mole fraction = 0.07188/0.47415 = 0.152 of sulfur tetrafluoride gas.

PART TWO: CALCULATE THE PARTIAL PRESSURE AND TOTAL PRESSURE BY USING THE FORMULA BELOW;

pressure × volume = number of moles × gas constant, R × temperature.

Pressure = n × R × T/ V.

For dinitrogen monoxide gas. ;

Partial Pressure = 0.4023 × 8.314 × 280.03 / 5 × 10^-3 = 187 kPa.

For sulfur tetrafluoride gas

Partial Pressure = 0.07188 × 8.314 ( × 280.03 / 5 × 10^-3. = 33.4 kpa.

(3). Total pressure = (187 + 33.4)kpa = 220.4 kpa

Answer:

5.00 moles O₂

General Formulas and Concepts:

Chemistry - Atomic Structure

Explanation:

Step 1: Define

3.01 × 10²⁴ molecules O₂

Step 2: Convert

\(3.01 \cdot 10^{24} \ mc \ O_2(\frac{1 \ mol \ O_2}{6.022 \cdot 10^{23} \ mc \ O_2} )\) = 4.99834 moles O₂

Step 3: Check

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

4.99834 moles O₂ ≈ 5.00 moles O₂

Answer:

\(T_f=72.5\°C\)

Explanation:

Hello!

In this case, since this a problem in which the cold water is heated by the hot water, we can write:

\(Q_{hot}+Q_{cold}=0\)

Thus, by plugging in the mass, specific heat and temperatures, we obtain:

\(m_{hot}C_{hot}(T_f-T_{hot})+m_{cold}C_{cold}(T_f-T_{cold})=0\)

Now, we can also write:

\(m_{hot}(T_f-T_{hot})+m_{cold}(T_f-T_{cold})=0\)

Then, after applying some algebra, it is possible to obtain:

\(T_f=\frac{m_{hot}T_{hot}+m_{cold}T_{cold}}{m_{hot}+m_{cold}}\)

If we plug in, we obtain:

\(T_f=\frac{350.0g*95.0\°C+150.0g*20.0\°C}{350.0g+150.0g}\)

\(T_f=72.5\°C\)

Best regards!

Answer:

Explanation:

Convection currents are driven by differences in temperature and density of materials. In the case of the Earth's weather patterns, uneven heating of the Earth's surface by the Sun creates temperature and density differences in the air, causing convection currents to form. Hot air rises and cool air sinks, creating a continuous flow of air that results in the movement of air masses, the formation of weather systems, and the distribution of heat across the Earth. This is why there are hotter and colder parts of the Earth, as well as weather patterns such as storms and winds.

Convection is a process by which heat is transferred through a fluid or gas (such as air). In the case of the Earth's atmosphere, this means that heat from the Sun is absorbed by the Earth's surface, which in turn heats up the air in contact with it. However, not all parts of the Earth's surface are heated equally - for example, the equator receives more direct sunlight than the poles. This leads to temperature and density differences in the air, which in turn create convection currents.

The basic process of convection works like this: when air is heated, it becomes less dense and rises. As it rises, it cools and becomes more dense, eventually sinking back down to the surface. This creates a circular motion of air, with hot air rising and cool air sinking, that we call a convection current.

In the context of the Earth's weather patterns, convection currents play a major role in the distribution of heat around the planet. For example, warm air rising from the equator creates a low-pressure zone, which draws in cooler air from the poles. This circulation pattern is what creates the trade winds, which blow from east to west in the tropics. Similarly, cold air sinking at the poles creates a high-pressure zone, which draws in warmer air from the tropics. This circulation pattern is what creates the westerlies, which blow from west to east in the mid-latitudes.

Convection currents also play a role in the formation of weather systems such as storms and cyclones. When warm, moist air rises rapidly, it can create a low-pressure area that draws in more warm, moist air. As the air rises, it cools and water vapor condenses into clouds, which can release large amounts of energy in the form of precipitation and wind. This is how thunderstorms and hurricanes form - they are essentially massive convection currents driven by the unequal heating of the Earth's surface.

So in summary, convection currents are driven by differences in temperature and density of materials, and are responsible for the distribution of heat and the formation of weather patterns on the Earth.

Answer:

CuBr

Mn2O3

Hg2I2

Mg3(PO3)2

Explanation:

When writing the formula of an ionic compound, we use the exchange method.

The symbol of each element or ion is written with it's charge as a superscript. The charges are then interchanged, the signs are dropped and the figures are written as subscripts. This gives the formula of compound.

The student's method for preparing pure crystals of copper sulfate contains errors and does not produce the desired outcome.

Use copper oxide instead of calcium carbonate: The student should add copper oxide (CuO) to the hydrochloric acid instead of calcium carbonate. Copper oxide reacts with hydrochloric acid to form copper chloride, which can then be converted to copper sulfate through a subsequent reaction with sulfuric acid.

Add sulfuric acid to the copper chloride solution: After the copper chloride solution is formed, the student should add sulfuric acid to it. This reaction between copper chloride and sulfuric acid will yield copper sulfate and hydrochloric acid. The student should ensure that the correct stoichiometric ratio is maintained to maximize the yield of copper sulfate crystals.

Crystal formation: The student should allow the solution to cool slowly after the reaction with sulfuric acid. This promotes the formation of larger, well-defined copper sulfate crystals.

Filtration and drying: Once the crystals have formed, the student should filter the solution to separate the solid crystals from the remaining liquid. The filtered crystals should then be thoroughly dried to remove any remaining water, resulting in pure copper sulfate crystals.

By following these improvements, the student can obtain pure crystals of copper sulfate.

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The second ionization energy is always greater than the first one. So, the answer is between 1450and 6900 kJ/mol.

Each ionization energy means the energy that it takes to separate the outer electron from the atom. In this case, the best estimation of the second ionization energy is 6900 kJ/mol because it would take more than double the first ionization energy.

Therefore, the answer is d.

Answer:

true

Explanation:

hydrogen and carbon make hydrocarbons

Answer:

water - Yes because the do drink water

Air - yes they need to breath or alse they would not do good

warmth - yes or they die from coldness

Light - yes to get there food

soil - yes nution for there roots

Explanation:

Hopes it helps

we would need 2625.13 grams (or 2.62513 kilograms) of NaCl.

To calculate the mass of NaCl required to produce a 26.4 mol/L solution with a 1.7 L volume, we need to use the formula that relates the mass of solute, moles of solute, and molarity:Molarity (M) = moles of solute / liters of solution Rearranging this formula, we get:moles of solute = Molarity (M) x liters of solutionWe can use this formula to find the moles of NaCl needed:moles of NaCl = 26.4 mol/L x 1.7 L = 44.88 molNow, we can use the molar mass of NaCl to convert from moles to grams. The molar mass of NaCl is 58.44 g/mol:mass of NaCl = moles of NaCl x molar mass of NaClmass of NaCl = 44.88 mol x 58.44 g/mol = 2625.13 gTo produce a 26.4 mol/L solution with a 1.7 L volume.

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The rock sample on the left is basalt, a type of igneous rock. Heat and intense pressure changed the basalt into blueschist, a type of metamorphic rock glaucophane schist

Blueschist facies is determined by the particular temprature and pressure condition required to metamorphose basalt to form blueschist and felsic rock and pelitic sediment which are subjected to blueschist facies condition will form different mineral assemblages then metamorphosed and blueschist facies rock are generally formed in subduction zones where oceanic crust is being stuffed into a trench that will become true blueschist once they were pressure cooked and also called glaucophane schist and is a metavolcanic rock that with similar composition at high pressure and low temprature

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Answer:

The answer is:

\(PART \ A: CH_4\\\\PART \ B: CH_30H\\\\PART \ C: H_2CO\)

Explanation:

Parts A:

The vapor pressure is higher in \(CH_4\) because it is non-polar, while \(CH_3Cl\) is polar. \(CH_4\) has a lower molar weight as well.

Part B:

Although hydrogen bonding is found in both commodities, the vapor pressure is higher because of the smaller molar mass of \(CH_30H\).

Part C:

\(H_2CO\) does not show hydrogen due to the increased vapor pressure

\(CH_3OH\) bonding.

The only true statement about an exterior angle of a triangle from the above is that it forms a linear pair with one of the interior angles of the triangle.

A triangle can be defined as a one of the plane shapes which has three sides and three angles

So therefore, the only true statement about an exterior angle of a triangle from the above is that it forms a linear pair with one of the interior angles of the triangle.

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Answer:

it will be the same on both sides of the membrane

When the pure water is separated from the aqueous sugar solution when the sugar cannot pass through the semipermeable membrane. So the water moves through the membrane to the sugar solution. Therefore, the concentration of sugar solution will be decreased.

Osmosis can be described as the spontaneous net movement or diffusion of solvent molecules through a permeable membrane from a region of lower solute concentration to a higher solute concentration in a direction that tends to balance the solute concentrations on both sides.

A physical process in which any solvent moves across a selectively permeable membrane separating two solutions of different concentrations.

Osmotic pressure can be described as the external pressure needed to be applied so that there is no net movement of a solvent across the membrane. Osmotic pressure can be defined as a colligative property because it depends on the molar concentration of the solute but not on its identity.

Therefore, option (A) is correct.

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