How many individual oxygen atoms are contained in a sample of P2O5 that also
contains 0.620 moles of P? (Input your answer with scientific notation using "e-

Answer:

Some examples of solutions are salt water, rubbing alcohol, and sugar dissolved in water. ... In our example of salt water, the solute is the salt. Solvent: this is the substance that makes up the majority of the solution. This is the part where the solute is dissolved.

Explanation:

I hope they should be right answer

Answer:

See Explanation

Explanation:

The reactivity of a metal towards water depends on the position of the metal in the electrochemical series. Metals that are high up in the series do react violently and spontaneously with water. Metals that are lower in the series are sometimes unreactive in water.

Hence, potassium reacts very rapidly with water to yield KOH and hydrogen gas while gold does not react with water.

SO2 react with water to form sulphuric acid hence SO2 is called an acid anhydride.

The reaction occurs in the following steps;

2SO2(g) + O2(g) ------->2SO3(g)

SO3(g) + H20(l) ------>H2SO4(aq)

The concentration of the nitric acid solution is 0.0862 mol/\(dm^3\) and the concentration of the nitric acid in g/\(dm^3\) is 5.431 g/\(dm^3\).

A titration is a technique where a solution of known concentration is used to determine the concentration of an unknown solution.

According to the neutralization law,

\(n_1M_1V_1 = n_2M_2V_2\)

\(n_1\)is the basicity of \(HNO_3\) =1

\(M_1\) is the molarity of \(HNO_3\) =0.05 mol/\(dm^3\)

\(V_1\) is the volume of \(HNO_3\) solution = 25\(cm^3\)

\(n_2\) is the acidity of NaOH =1

\(M_2\) is the molarity of NaOH =?

\(V_2\) is the volume of NaOH solution =14.5\(cm^3\)

Putting in the values we get:

\(n_1M_1V_1 = n_2M_2V_2\)

1 x 0.05 mol/\(dm^3\) x 25cm^3 = 1 x \(M_2\) x 14.5\(cm^3\)

\(M_2\) = 0.0862 mol/\(dm^3\)

Hence. the concentration of the nitric acid solution in  0.0862 mol/\(dm^3\) and the concentration of the nitric acid in g/dm3 is 0.0862 x63.01 g/\(dm^3\)= 5.431 g/\(dm^3\).

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Boyle's law states that If the pressure on a gas is increased, then its volume will decrease because the gas molecules will gets closely packed at high pressure.

According to Boyle's law, at constant temperature the volume of a gas is inversely  proportional to the pressure. Therefore, as the pressure is increased, volume of the gas is decreased.

The volume of a gas is the total space it occupied . The gaseous particles can diffuse anywhere at low pressure and they not collide each other at this maximum spreading condition.

When the pressure is increased, the force of intermolecular attraction  increases make them more compressed and the space occupied by them that is the volume of the gas reduces.

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Answer:

What is the effect of ✔ pressure on the volume of a gas?

Explanation:

edge 2023

Answer: The second reaction took place at a higher temperature

Explanation:

Rate is affected by temperature, as higher temperatures cause the reacting molecules to have more energy.

Collision theory states that in order for a reaction to occur, each reacting molecule must collide with one another in the correct orientation and with enough energy, called the activation energy.

A higher energy caused by a higher temperature will cause the molecules to collide much more frequently, leading to a higher chance of a successful collision, and with more energy to satisfy the activation energy.

Therefore, the second reaction must have taken place at a higher temperature, since the molecules had more energy than the first reaction leading to a higher rate of reaction, and a higher rate constant.

Answer:

Yes

Explanation:

In the activity or reactivity series of metals it turns out that calcium and magnesium are above aluminium

The molarity of chloride ions in the solution is 0.712 M.

Molarity (M) is the amount of a substance in a certain volume of solution.

Molarity is also known as the molar concentration of a solution.

For NaCl, we use the following equation to determine the number of moles:

Given mass / Molar mass = number of moles

NaCl is assumed to weigh 1.50 g.

NaCl has a molar mass of 58.5 g/mol.

Using the values in the equation above, we obtain:

NaCl moles are equal to 1.50g/58.5g/mol, or 0.0256mol.

Both sodium and chloride ions are produced in one mole of sodium chloride (NaCl).

0.0256mol = moles of chloride ions

Regarding calcium chloride:

The following equation is used to determine the number of moles for a given molarity:

Molarity of the solution is calculated as follows: moles of solute * 100 / volume of solution (in ML).

(1)

Calcium chloride solution has a molarity of 0.100 M.

50.0 mL is the solution's volume.

Equation 1 is solved with the following values: 0.100M = Moles of CaCl2 * 1000 / 50

CaCl2 moles = 0.100M x 50

Moles of CaCl2 are equal to 0.100M*50/1000, or 0.005 mol.

One mole of calcium chloride yields two moles of chloride ions in addition to one mole of calcium ions.

Chloride ion moles equal (2 x 0.005) = 0.01 moles.

Now, we use equation 1 to determine the molarity of chloride ions in the final solution:

(0.0256 + 0.01) = 0.0356 moles of chloride ions are present in total in the solution.

50.0 mL is the total amount of solution.

Equation 1 is solved for the following values:

Chloride ion molecular weight = 0.0356 * 1000 / 50.0

The solution's molarity is 0.712M.

Consequently, the solution's molarity of chloride ions is 0.712 M.

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Answer:

To name an ionic compound, you simply need to find the names  of the cation and anion present in the compound and make sure to revise the ends of metal names as needed. First, write out the name of the metal, followed by the name of the non-metal with its new ending.

Explanation:

Write the name of the cation, and then write the name of the anion, changing the ending to "-ide" if it's a single element and leaving it as it is if it's a polyatomic ion.

The concentration of the NaOH solution is approximately 0.00624 M.

To find the concentration of the NaOH solution, you can use the titration formula:

M1V1 = M2V2

where M1 is the concentration of HCl (0.010 M), V1 is the volume of HCl (15.6 mL), M2 is the concentration of NaOH (unknown), and V2 is the volume of NaOH (25.0 mL).

0.010 M * 15.6 mL = M2 * 25.0 mL

Now, solve for M2:

M2 = (0.010 M * 15.6 mL) / 25.0 mL
M2 ≈ 0.00624 M

So, the concentration of the NaOH solution is approximately 0.00624 M.

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First of all, Z is unknown. I hope it is a mistake.

        Now, it is given that the element X has nineteen electrons. This proves that X is actually Potassium.

        As per the periodic table, both Potassium and Lithium belongs to group 1 as their valency is 1 because of the presence of only one electron in the outermost shell of electrons i.e., they lose an electron during a chemical reaction to form a stable compound. Furthermore, both are metallic.

        Magnesium belongs to group 2 and hence its valency is two, which is different from potassium though it is metallic. Similiarly, bromine belongs to group 17 and gains one electron during a reaction in contrast to potassium.

( No internal links available for reference. For clarification, check the periodic table).

Materials generally become warmer when they are "absorbed" by light, this statement is more detailed. So, the correct answer is "absorbed by them."

Explanation: When a material absorbs light, it receives energy from the light, which leads to an increase in temperature. When light is absorbed by a material, the energy of the light is transformed into internal energy in the material. The temperature of a material can increase as a result of this energy absorption.

This is due to the fact that the increased internal energy of the molecules in the material causes them to vibrate more quickly and hence results in a temperature rise.

The light reflects or transmits when it passes through the material. When light reflects off a surface, it bounces back in the opposite direction. Transmitted light travels through a material without being absorbed by it.

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Answer: Same I would fall asleep too.

Explanation: Class is too boring

Answer:

If the earth had on Axis, there will be no seasons.

When something about the size of mars clashed with Earth about 4.5 billion years ago, it hit off a piece that became the moon.

Answer:

Oc. Y is your correct answer

Answer:

k Nishant

Explanation:

the answer is oC . Y

The correct nuclear equation for 24195Am's alpha decay is a, as it involves a nucleus releasing an alpha particle, transforming into a different nucleus. Other options represent beta, electron, and neutron decays. Correct answer is a. 241 95 Am yields 4 2 He + 237 93 Np

The nuclear equation for the alpha decay of 24195Am is a. 24195Am yields 42He + 23793Np. This is because alpha decay is a type of radioactive decay in which a nucleus releases an alpha particle (a helium nucleus) and thereby transforms (or decays) into a different nucleus. The mass number of the parent nucleus decreases by four and the atomic number decreases by two when an alpha particle is emitted.

To balance the equation, the mass and atomic numbers of the products must add up to the mass and atomic numbers of the reactant. Therefore, the correct nuclear equation for the alpha decay of 24195Am is:24195Am → 42He + 23793Np

(a)The other options (b-e) represent different types of nuclear decay, such as beta decay (b, d), electron capture

(c), and neutron capture

(e). Beta decay involves the emission of a beta particle (an electron or positron), while electron capture involves the absorption of an electron by a nucleus. Neutron capture involves the absorption of a neutron by a nucleus, while alpha decay involves the emission of an alpha particle (a helium nucleus).Therefore, the correct answer is option a.

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Answer:

Explanation:

The acceleration of an object given it's mass and the force acting on it can be found by using the formula

\(a = \frac{f}{m} \\ \)

f is the force

m is the mass

From the question we have

\(a = \frac{8}{2} \\ \)

We have the final answer as

Hope this helps you

Answer:

1 ppm :)

Explanation: i was guessing and 1 ppm was the answer :)

According to the given statement 0.3345 M  is the molarity of the Ba(OH)₂ solution.

The quantity of a substance in a specific solution volume is known as its molarity (M). The amount of moles of a solute every litre of a solution is referred to as molarity. The molecular concentration of a solution is another name for molarity.

Ba(OH)₂+  2HCl ⇒ BaCl₂ + H₂O

Ratio of moles Ba(OH)₂ ,  

HCl  = 1:2

Amount of HCl consumed

= 0.500/1000*66.90

= 0.03345 mol

So Ba(OH)₂ reacted = 1/2 * 0.03345 mol

If  molarity of Ba(OH)₂ is x then

x/1000*50 = 1/2 * 0.03345

x =  0.3345 M.

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Answer:

(Hope this helps can I pls have brainlist (crown)☺️)

Explanation:

Because the atoms in metals form a matrix through which outside electrons may easily travel, metals are good conductors of electricity and heat. They generate a sea of electrons around the positive nuclei of the interacting metal ions, rather than circling their particular atoms.

The free flow of shared electrons can carry an electric current through a metal. Carbon atoms join with iron atoms to create bonds.

The term carbon skeleton is defined as the pattern in which the carbon atoms are bonded together in a molecule, disregarding atoms of other elements and differences between single and multiple bonds. In the given carbon skeleton there are 5 primary carbon, 5 secondary carbon and 3 tertiary carbon.

According to the carbon skeleton given in the question given above, there are,

5 primary carbon

5 secondary carbon

3 tertiary carbon

0 quaternary carbon

Primary carbon are defined as those which is attached to one other carbon atom only, secondary carbon are those which is attached to two other carbon atoms, tertiary carbon are those which is attached to three other carbon atoms, and quaternary carbon are those which is attached to four other carbon atoms.

The diagram of the carbon skeleton is attached in the image given below.

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The given number is written incorrectly because in the integer part of the number there should be a number between 1 and 10, here it is 423, which is not in this interval.

To write it properly, put the decimal dot two place to the left and add 2 to the power of 10. This way:

The mass percent of realgar in the mixture is 5.44%.

Given the percent by mass of As in realgar (70.029%) and orpiment (60.903%), the percent by mass of As in the mixture (61.4%) can be represented as follows:

0.70029x + 0.60903(1 - x) = 0.614

Now we just need to solve this equation for x to find the percent by mass of realgar in the mixture.

0.70029x + 0.60903 - 0.60903x = 0.614

0.09126x = 0.614 - 0.60903

0.09126x = 0.00497

x = 0.00497 / 0.09126

x = 0.0544

So, the mass percent of realgar in the mixture is 5.44%.

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Answer:

Option 3, The attraction between the can and the magnet is a pull.

Explanation:

The complete question is

Mr. Wang works in a recycling center. Recyclable materials arrive at the

center mixed together. Workers use magnets to separate steel cans from

other items. Which two statements are true about the force between a steel can and a magnet?

1 Gravity pushes the can toward the magnet.

2 The force between the can and the magnet is a noncontact force.

3 The attraction between the can and the magnet is a pull.

4 The attraction between the can and the magnet is a push

Solution

The force exerted by magnet on steel is the pull force. In magnets unlike poles attract each other (pull force) while the like poles repel (push force). Now, the steel or any ferrous object in the garbage when experience magnetic field develop magnetic field of their own in such a way that their north always faces the south of the external magnet or vice versa.

Hence, the force between a steel can and a magnet is pull force

The freezing point depression of a solution is dependent on the number of solute particles in the solution. The greater the number of solute particles, the greater the freezing point depression.

Assuming all three salts are fully soluble in water, the one that will lower the freezing point by the greatest amount will be the one that dissociates into the greatest number of ions in solution.

For example, if one of the salts is sodium chloride (NaCl), it will dissociate into Na+ and Cl- ions in solution, creating two particles per formula unit. If another salt is calcium chloride (CaCl2), it will dissociate into Ca2+ and 2Cl- ions in solution, creating three particles per formula unit.

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The water from inside the test tube most likely came from the blue copper sulfate crystal which is a hydrated salt.

Hydrated salts contain water of hydration.

A blue copper sulfate crystal contains water of hydration.

When heated, the water evaporates off to give an anhydrous salt which appears colorless.

The equation of the reaction is as follows:

CuSO4•5H2O -----> CuSO4 + 5H2O(g)

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Answer:

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Explanation:

Answer:

V₂ = 5.97 L

Explanation:

Given data:

Initial temperature = 9°C (9+273 = 282 K)

Initial volume of gas  = 6.17 L

Final volume of gas = ?

Final temperature = standard = 273 K

Solution:

Formula:

The Charles Law will be apply to solve the given problem.

According to this law, 'the volume of given amount of a gas is directly proportional to its temperature at constant number of moles and pressure'

Mathematical expression:

V₁/T₁ = V₂/T₂

V₁ = Initial volume

T₁ = Initial temperature

V₂ = Final volume  

T₂ = Final temperature

Now we will put the values in formula.

V₁/T₁ = V₂/T₂

V₂ = V₁T₂/T₁  

V₂ = 6.17 L ×  273K /  282  k

V₂ = 1684.41 L.K / 282 K

V₂ = 5.97 L

Answer:

Look in explanation:

Explanation:

The definition of temperature is the measure of kinetic energy(which is the energy used to measure motion). Since phase changing is only changing the energy, the kinetic energy will not change. There is only energy used to separate the molecules. You can see on a phase change graph that the temperature stays constant during a phase change and will ONLY change after the change has already been done.