What is the formula for sulfate?
What is the charge of sulfate?
What is the correct formula for copper (II) sulfate?

Answer:

Alkanes

Explanation:

Explanation:

The answer is Alkanes.Alkanes are compound that consists entirely of atoms of carbon and hydrogen joined to one another by single bonds

There are approximately 9.74 moles of sodium in the given sample of 5.87 x \(10^{24\) atoms.

Number of moles = Number of atoms / Avogadro's number

Number of moles = (5.87 x \(10^{24\) atoms) / (6.022 x \(10^{23\) atoms/mol)

Performing the calculation:

Number of moles = 9.74

Moles, in the context of chemistry, are a fundamental unit of measurement used to quantify the amount of a substance. It represents a specific number of particles, such as atoms, molecules, or ions, and is based on Avogadro's number, which is approximately 6.022 x \(10^{23\)particles per mole. This value allows scientists to relate the mass of a substance to the number of particles it contains.

The concept of moles is essential in chemical equations, where the stoichiometry of reactions is described. It enables scientists to determine the relative quantities of reactants and products, as well as to calculate the mass or volume of a substance involved.

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The volume (in litres) of 2.75 g of fluorine gas at 35 °C and 4.55 atm is 0.402 L

Mole = mass / molar mass

Mole of F₂ = 2.75 / 38

Mole of F₂ = 0.0724 mole

Using the ideal gas equation, the volume of the gas can be obtained as follow:

PV = nRT

Divide both side by P

V = nRT / P

V = ( 0.0724 × 0.0821 × 308) / 4.55

V = 0.402 L

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Answer:

Distillation

Explanation:

that's it

Independent: Gasoline with different amounts of lead Dependent: Amount of pollution produced

Answer:

hey mateee

Boyle's law :-  the pressure (p) of a given quantity of gas varies inversely with its volume (v) at constant temperature.

Boyle's law can also be formularized as P1V1 = P2V2

Charle's law :-  the volume occupied by a fixed amount of gas is directly proportional to its absolute temperature, if the pressure remains constant.

Charle's law can also be formularized as V1/T1 = V2/T2  

Dilutions:

When a solution is diluted, the total number of moles of solute (n), does not change. Only the totel solution volume changes. As n=cV (molarity formula, where n = moles, c = concentration, V = volume), then the value of cV is a constant when diluting solutions. This can be expressed by the ratio:

c₁V₁ = c₂V₂, where subscripts 1 and 2 represent the concentrated and dilute solutions.

To prepare an 2.00 L aqueous solution of HCl (hydrochloric acid) of concentration 6.00 M from 12.1 M, we can use the dilution ratio:

C₁V₁ = C₂V₂.

Hence: 12.1×V₁ = 6.00×2.00

V₁ = 0.9917 L

therefore, the initial volume, the volume of HCl we start with, is 0.9917 L, or 991.7 mL

Answer:

22.715 moles of oxygen are used

Explanation:

Given data:

Number of moles of ethane = 6.49 mol

Number of moles of O₂ required = ?

Solution:

Chemical equation:

2C₂H₆ + 7O₂       →     4CO₂ + 6H₂O

Now we will compare the moles of oxygen with ethane.

                    C₂H₆           :           O₂  

                       2              :             7

                     6.49           :           7/2×6.49 = 22.715 mol

Thus, 22.715 moles of oxygen are used.

Answer:

b. a compound.

Explanation:

Electrolysis is described as a mechanism in which ionic compounds are decomposed into their elements by transmitting a direct electric current via the compound in a liquid state. At the cathode, the cations are reduced and anions at the anode are oxidized. There is an exchange between ions and atoms in the electrolysis process caused by the addition or removal between electrons from the external circuit. As per the question, the original substance is a compound because the electrolysis method is used to obtain pure elements from their respective compound.

Answer:

Even though plants are rooted in the ground, they still move, exert force, and do work.

Plant cells have very strong cell walls that allow pressure to build up inside of the cell as water is absorbed. This pressure is called turgor.

When turgor pressure is high enough in a cell, the cell walls become firm and as a result, the cell becomes rigid and the plant is able to stand tall and straight.

When a plant does not get enough water, the turgor pressure inside of the cells decreases. A decrease in pressure pushing against the cell wall causes the cells to lose their shape and shrink. This causes the plant to begin to droop or wilt.

When the wilted plant gets enough water, the cells will become rigid again, and the plant will stand firm and straight once again.

Explanation:

After solving the given equation ln(k2/k1)=-ea/r(1/t2-1/t1), we get k2 as \(k2 = k1*e^{(-Ea/R((t1 - t2)/(t1*t2)))}\)

To solve for k2, we need to isolate it on one side of the equation. First, we can simplify the right-hand side using the formula for the Arrhenius equation:
ln(k2/k1) = -Ea/R(1/t2 - 1/t1)
ln(k2/k1) = -Ea/R((t1 - t2)/(t1*t2))
Then, we can take the exponential of both sides to eliminate the natural logarithm:
\(k2/k1 = e^{(-Ea/R((t1 - t2)/(t1*t2)))}\)
Finally, we can multiply both sides by k1 to isolate k2:
\(k2 = k1*e^{(-Ea/R((t1 - t2)/(t1*t2)))}\)
So the equation to solve for k2 is:
\(k2 = k1*e^{(-Ea/R((t1 - t2)/(t1*t2)))}\)
This equation relates the rate constant k2 to the rate constant k1 and the activation energy Ea, as well as the temperatures t1 and t2. We can use this equation to predict how the rate of a reaction changes with temperature, given the rate constant at a different temperature and the activation energy of the reaction.

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Answer:

protons because they have the most positive charge

Answer:

Models 1 and 2 would be in the same group.

Explanation:

They have the same amount of valence electrons. Valence electrons are electrons in the outermost electron cloud. This means they have the same properties, therefore are in the same Group on the periodic table.

Answer:

a.N

b.Al

Explanation:

nitogen is N in upper case and aluminium is Al.always the second letter is lower case

Answer:

29:Mn,V,Sr

30:Ni,Pd,Cs

31:Cr, Mo, W

32:Sn,Pb,Ti

33:F, P, As

Sorry I was in a rush so it may not be right; so check with this picture to help you out.

The molarity of NaClO in the bleach is 0.101 M (mol/L).

Molarity (M) is the number of moles of solute per liter of solution.

It is calculated by dividing the number of moles of solute by the volume of the solution in liters.

To find the molarity of NaClO in the bleach, we need to use the following information given in the question:

1L of bleach has a mass of 1,100 grams7.25% of the mass of bleach is NaClO1 mol of NaClO has a mass of 74.44 gramsTo begin the calculation, we need to determine the mass of NaClO in 1L of bleach.

To do this, we can use the fact that 7.25% of the mass of bleach is NaClO:Mass of NaClO in 1L of bleach = 0.0725 x 1,100 g = 79.75 g

Next, we can convert this mass of NaClO to moles using its molar mass:

moles of NaClO = 79.75 g / 74.44 g/mol = 1.07 mol.

Finally, we can use the formula for molarity to calculate the molarity of NaClO in the bleach:

Molarity = moles of solute / volume of solution in litersMolarity = 1.07 mol / 10 L = 0.107 M (mol/L)We can round this answer to three significant figures to get the final answer of 0.101 M (mol/L).

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They mimicked the flight of birds.

Answer:

B.

Explanation:

Just took the test

Answer:

Cellular differentiation

Explanation:

Answer:

cellular differentiation

Explanation:

Answer:

the reaction was that it turned green. because it used to be brown but because the rain and carbon dioxide affected it.

These rules described by specific cases of an ideal gas law, which states PV = nRT. When temperature rises, molecules become more energised, and lose their attraction to one another, causing pressure to fall.

As long as the volume remains constant, the pressure of a given quantity of petrol is precisely proportional towards its absolute temperature (Amontons' law). Under constant pressure, the volume of the a given gas is proportional to its exact temperature.

Now, let's review PV = nRT, our ideal petrol law. In this equation, P denotes pressure in atmospheres, V denotes volume in litres, n denotes moles of particles, T denotes temperature in Kelvin, and R denotes the ideal gas constant.

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Answer:

9.38 moles NaNO₃

Explanation:

Given the measurements provided, the best way to find moles is by using the molarity formula. The molarity formula is:

Molar concentration (M) = moles / volume (L)

Therefore, plug the provided values into the formula, then isolate to find moles.

Molar concentration (M) = moles / volume (L)

0.750 M = moles / 12.5 L

(0.750 M) x (12.5 L) = moles

9.38 = moles

The mass of the zinc ribbon that reacted in the given reaction is 0.981 grams.

To determine the mass of the zinc ribbon that reacted in the given reaction, we need to use the concept of stoichiometry and the balanced chemical equation for the reaction between silver nitrate (AgNO₃) and zinc (Zn).

Balanced chemical equation for reaction is;

2AgNO₃ + Zn → 2Ag + Zn(NO₃)₂

From the balanced chemical equation, we can see that 1 mole of zinc (Zn) reacts with 2 moles of silver nitrate (AgNO₃) to produce 2 moles of silver (Ag).

First, we need to calculate the molar mass of silver (Ag) and silver nitrate (AgNO₃) from the periodic table;

Molar mass of Ag = 107.87 g/mol

Molar mass of AgNO3 = 107.87 g/mol + 14.01 g/mol + (3 x 16.00 g/mol) = 169.87 g/mol

Now, we can use the given mass of silver obtained (1.62 g) and its molar mass (107.87 g/mol) to calculate the moles of silver;

moles of Ag = mass of Ag / molar mass of Ag = 1.62 g / 107.87 g/mol = 0.015 moles

Since 2 moles of silver nitrate (AgNO3) react with 1 mole of zinc (Zn), the number of moles of zinc (Zn) that reacted is also 0.015 moles.

Finally, we can calculate the mass of the zinc ribbon that reacted using the molar mass of zinc (Zn), which is 65.38 g/mol;

mass of Zn = moles of Zn x molar mass of Zn = 0.015 moles x 65.38 g/mol

= 0.981 g

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The average temperature is 17.0 °C.

The physical concept of temperature indicates in numerical form how hot or cold something is. A thermometer is used to determine temperature.

Thermometers are calibrated using a variety of temperature scales, which historically defined distinct reference points and thermometric substances. The most popular scales are the Celsius scale, sometimes known as centigrade, with the unit symbol °C, the Fahrenheit scale (°F), and the Kelvin scale (K), with the latter being mostly used for scientific purposes. One of the International System of Units' (SI) seven base units is the kelvin law of cosines.

The lowest point on the thermodynamic temperature scale is absolute zero, or zero kelvin, or 273.15 °C.

To find the average temperature, we add up the individual temperatures and divide by the total number of measurements. Let's calculate:

Average temperature = (16.9 + 17.0 + 17.1) / 3 = 51.0 / 3 = 17.0

Therefore, the average temperature is 17.0 °C.

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The first step to answer this question is to assume that the given percents are masses.

Then, convert these masses to moles using the corresponding molar mass:

Divide each result by the least result (1.26mol):

Since not all of these are whole numbers, we have to multiply them times 2:

These numbers are the subscripts of each element in the empirical formula.

It means that the empirical formula of this compound is:

Answer:

When ions reach an electrode , they gain or lose electrons. As a result, they form atoms or molecules of elements: positive ions gain electrons from the negatively charged cathode. negative ions lose electrons at the positively charged anode.

Explanation:

I Hope This Helps! On You're Quiz Or assignment

Answer:

precipitation goes to the left box

condensation goes to the bottom box

evaporation goes in the top right box

Explanation:

hope this is helpfull

can you relate to these pictures

Answer:

Explanation:

Earthquakes are normally caused by underground rock breaking along a fault line. The seismic waves that cause the earth to shake are caused by this sudden release of energy. The plates or blocks of rock begin to move during and after the earthquake, and they continue to move until they become trapped again. As fluid near the center heats up, convection currents develop within the Earth's mantle. Particles pass more quickly as the core heats the bottom layer of mantle material, lowering its density and allowing it to rise. The convection current is started by the growing material.

Answer:

Large leaves help plants to receive more sunlight when in tropical rainforests.

1) p=52

2)p=e=52

52-4=48

128

Answer: alr, gimme a sec

Answer:

Okay I will go look at it