Calculate the free [ag+] in a solution that contains 0. 620 m agno3and 1. 20 m nh3?(ans. 0. 02)ag2 + nh3→ [ag(nh3)2] + kf= 1. 6 × 107

The pressure that is develops in the container when the water is reaches this higher temperature is 2.03 × 10³ psi.

According to the law of mass of conservation , wet :

Density (40 °C) × V = Density ( 100 °C ) × (V + ΔV)

ΔV/ V = ( Density (40 °C) / Density ( 100 °C ) ) - 1

ΔV/ V  = 1.940 / 1.927

ΔV/ V = 0.00675

The change in volume and bulk modulus relation given as :

K = - ΔP / ( ΔV/ V)

ΔP = - 300000 × - 0.00675

ΔP =  2.03 × 10³ psi

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Answer:

28 years

Explanation:

the information is literally in the question.

The density of mercury in SI units is 13600 kg/m3.

1 kg of weight is equal to 1000 grams of weight [SI to CGS conversion].

Thus, it can be written as,

1kg=1000 gm

1gm=1kg/100

Now, 1 meter is equal to 100 centimeters [SI to CGS conversion].

1 m =100 cm

1 cm=1 m/100

Thus, it can be written as

 1\(m^{3}\) =\((10^{2})^{3}\) \(cm^{3}\)

1\(cm^{3}\)=\(\frac{1m^{3}}{(10)^{6}}\)

  so  13.6  gm/\(cm^{3}\)    = 13.6 *    \(\frac{\frac{1kg}{1000}}{\frac{1m^{3}}{(10)^{6}}}\)  

                                 =13.6 * (10^6)/(10^3)

                                = 13.6 * (10^3) = 13600kg/\(m^{3}\)

so, the value of density of mercury in SI unit is 13600 kg/\(m^{3}\)\

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Answer: The Kinetic Molecular Theory of  Matter

Explanation: The answer is: B. Collisions between gas particles are elastic; there is no net gain or loss of kinetic energy.

The Kinetic Molecular Theory of  Matter

The calculated molar ratio of iron to oxygen in BIFs is 1.452.

Comparing this ratio to the molar ratios of Hematite (1:0.75) and Magnetite (1:0.67), we can see that the calculated value of 1.452 is closest to the Hematite molar ratio of 1:0.75. Therefore, Hematite is the more dominant iron component in BIFs.

To calculate the mass of oxygen contained within BIFs, we'll use the given information:

Total mass of the modern atmosphere = 5.01×10¹⁸ kg

Percentage of oxygen in the modern atmosphere = 21%

Mass of oxygen contained within the modern atmosphere = (5.01×10¹⁸ kg) × (0.21) = 1.051×10¹⁸ kg

Percentage of oxygen contained in BIFs = 6.6% (given)

Mass of oxygen contained within BIFs = (6.6% of 1.051×10¹⁸ kg) = 6.6/100 × 1.051×10¹⁸ kg = 6.9166×10¹⁶ kg

Therefore, the mass of oxygen contained within BIFs is 6.9166 × 10¹⁶ kg.

To calculate the number of moles of oxygen contained within BIFs, we'll use the molecular mass of O₂:

Molecular mass of O₂ = 0.032 kg/mole

Number of moles of oxygen contained within BIFs = (Mass of oxygen in BIFs) / (Molecular mass of O₂)

= (6.9166×10¹⁶ kg) / (0.032 kg/mole) = 2.1614375 × 10¹⁸ moles

Therefore, the number of moles of oxygen contained within BIFs is 2.1614375 × 10¹⁸ moles.

Next, let's calculate the mass of iron in BIFs:

Total mass of BIFs = 5.0×10¹⁷ kg

Percentage of iron in BIFs = 35%

Mass of iron contained within BIFs = (35% of 5.0×10¹⁷ kg) = 35/100 × 5.0×10¹⁷ kg = 1.75×10¹⁷ kg

To calculate the number of moles of iron contained within BIFs, we'll use the atomic mass of iron:

Atomic mass of iron = 0.0558 kg/mole

Number of moles of iron contained within BIFs = (Mass of iron in BIFs) / (Atomic mass of iron)

= (1.75×10¹⁷ kg) / (0.0558 kg/mole) = 3.1367419 × 10¹⁸ moles

Therefore, the number of moles of iron contained within BIFs is 3.1367419 × 10¹⁸ moles.

Finally, let's calculate the molar ratio of iron to oxygen in BIFs:

Molar ratio of iron to oxygen = (Number of moles of iron) / (Number of moles of oxygen)

= (3.1367419 × 10¹⁸ moles) / (2.1614375 × 10¹⁸ moles)

≈ 1.452

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33.12 moles of oxygen atoms are present in 4.14 moles of magnesium phosphate, Mg₃(PO₄)₂.

Molecular weight of magnesium phosphate = 262.87 g/mol

Number of moles of magnesium phosphate = 4.14 moles

Since,

1 mole of magnesium phosphate contains 8 moles of oxygen atom

therefore,

4.14 moles of magnesium phosphate will contain 4.14 × 8 oxygen atoms.

                                                                                       1

Hence, 33.12 oxygen atoms are present.

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Answer:

157 grams magnesium chloride

Explanation:

1.  We must first find the molar mass (g/mole) of magnesium chloride.  The molecular formula is MgCl2.

Add the elemental atromic weights for one molecule of the material:

1 Mg = 24.3

2 Cl = 2*(35.45) = 70.9

Total = 95.2 grams/mole

We can use this as a conversion factor by multiplying it times the moles we are asked to convert:  (1.65 moles MgCl2)*(95.2 grams/mole MgCl2).

The moles cancel, leaving us with 157 grams of magnesium chloride.

Answer:

YEESSS

Explanation:

Because that seems like the only logical answer.

Answer:

YES

Explanation:

YES

Answer:

ATP

Explanation:

Bronze is an example of an alloy. Hence, option A is the right answer.

    Bronze is an alloy that is the composition of two metals, Copper (Cu) and Tin (Sn). It contains 88% copper and 12% tin. Bronze is harder than copper such that it is readily meltable. Bronze cannot be separated in its physical state and hence it is called a mixture.

    Some properties of Bronze include,

    Bronze is used in the production of bearings, clips, and springs. It is also used in the Piano and Guitar strings.

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Distance and speed are scalars while displacement and velocity are vector quantities, scalars are not concerned with direction while vector are conscious with direction.

1. Distance and speed are scalars while displacement and acceleration are vector quantities.

2. The quantity that is ignorant of the direction is referred to as a scalars quantity.

3. A quantity that is conscious with direction is Vector quantity.

Distance vs Displacement,

The displacement is the shortest distance between the final and the initial position of the body while the distance is the actual distance covered by the body.

The displacement has direction from initial to final position, while distance has no direction.

The distance can never be zero while the displacement can be zero, negative or positive.

Negative displacement state that the direction of displacement of the body is in negative direction.

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Answer: 44.0095.

Explanation:

Answer:

Explanation:

Here, two molecules of ammonia \((NH_3)\) will be produced.

Here we are given that when two atoms of nitrogen and six atoms of hydrogen as reactants and we could observe that the product also has the same number of atoms of each element.

Since one atom of nitrogen combines with three atoms of hydrogen to form one molecule of ammonia, after that, we are left with another atom of nitrogen and three other atoms of hydrogen, which will again combine with themselves to form another ammonia molecule because after N-N bond is broken, single N atom would have three lone electrons in its outermost shell and each H atom would get joined to N, to attain a stable state.

Hence, at last, we are left with two molecules of ammonia.

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Answer:

Sulfate loses 2 electrons to sulphur dioxide.

The atomic number of an element represents the number of protons in an atom of that element. Since the isotope given is Mn-59, the atomic number of manganese (Mn) remains the same, which is 25.

If an atom of Mn-59 has a charge of +5, it means that it has lost 5 electrons. The number of protons in an atom is equal to its atomic number, and the number of electrons is equal to the number of protons in a neutral atom. Therefore, if the atom has lost 5 electrons, the number of protons remains the same, which is 25.

So, an atom of Mn-59 with a charge of +5 has 25 protons.

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Answer:

Explanation:

The trick here is to realize that if you know the volume of a gas at STP, you can use the fact that

1

mole of any ideal gas occupies

22.7 L

under STP conditions to calculate how many moles of gas you have in your sample.

Under STP conditions:

1 mole of an ideal gas = 22.7 L

−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−

In your case, you know that your sample of gas occupies

2.28 L

under STP conditions, which are currently defined as a pressure of

100 kPa

and a temperature of

0

∘

C

.

This means that your sample will contain

2.28

L

⋅

molar volume of a gas at STP



1 mole gas

22.7

L

=

0.10044 moles gas

Now, the molar mass of the gas is the mass of exactly

1

mole of the gas. In your case, you know that you get

3.78 g

for every

0.10044

moles, which means that you have

1

mole

⋅

3.78 g

0.10044

moles

=

37.6 g

Since this is the mass of

1

mole of gas, you can say that the molar mass of the gas is

molar mass = 37.6 g mol

−

1

−−−−−−−−−−−−−−−−−−−−−−−

Answer:

Explanation:

Ground state electron configuration of potassium (K) is 1s2 2s2 2p6 3s2 3p6 4s1. The valency of the element is determined by electron configuration in the excited state. This electron configuration shows that the last shell of the potassium atom has an unpaired electron (4s1). So the valency of potassium is 1.

Answer:

hydrogen bond are found between nucleotides

The electron configuration of Iron is:

[Ar] 3d⁶4s²

It will take 28.57 mL of HCl to complete the reaction. The quantity of space that anything occupies is measured by its volume. Various items, including cups of wheat, gallons of milk, and cubic feet of helium

What does a liquid's volume mean?

The volume of liquid that a vessel holds is measured in standard units as the liquid measurement. It is sometimes referred to as the vessel's "volume" or "capacity."

What are mass and volume?

A three-dimensional object's volume is the area it takes up, and it is expressed in cubic units. Cm3 and in3 are two examples of cubic units. The amount of substance in an item may be determined by its mass, on the other hand.

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Percent yield = 78.7% , the correct answer is D) 78.7%, which represents the percent yield of NaCl in the reaction.

To calculate the percent yield of NaCl in the given chemical equation, we need to compare the actual yield of NaCl with the theoretical yield. The theoretical yield is the amount of NaCl that would be produced if the reaction went to completion based on stoichiometry.

First, we need to determine the theoretical yield of NaCl. By examining the balanced equation, we can see that the stoichiometric ratio between CuCl2 and NaCl is 1:2. This means that for every 1 mole of CuCl2, 2 moles of NaCl are produced.

Step 1: Convert the mass of CuCl2 to moles using its molar mass.

Molar mass of CuCl2 = 63.55 g/mol (atomic mass of Cu) + 2 × 35.45 g/mol (atomic mass of Cl)

Molar mass of CuCl2 = 134.45 g/mol

Moles of CuCl2 = 31.0 g / 134.45 g/mol ≈ 0.231 mol

Step 2: Use the stoichiometry to calculate the theoretical yield of NaCl.

Since the stoichiometric ratio between CuCl2 and NaCl is 1:2, the moles of NaCl produced will be twice the moles of CuCl2.

Moles of NaCl (theoretical) = 2 × 0.231 mol = 0.462 mol

Step 3: Convert the moles of NaCl to grams using its molar mass.

Molar mass of NaCl = 22.99 g/mol (atomic mass of Na) + 35.45 g/mol (atomic mass of Cl)

Molar mass of NaCl = 58.44 g/mol

Theoretical yield of NaCl = 0.462 mol × 58.44 g/mol ≈ 26.96 g

Now, we can calculate the percent yield using the formula:

Percent yield = (Actual yield / Theoretical yield) × 100

Percent yield = (21.2 g / 26.96 g) × 100 ≈ 78.7%

Option D

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Answer:

c

Explanation:

I'm pretty sure it's C. If it is not then it might be d

The correct option is D) electronic vibrational and rotational transitions.

Electromagnetic radiation in the range from 200 to 800nm causes electronic vibrational and rotational transitions in molecules, which have important implications in various fields of science.

Electromagnetic radiation in the range from 200 to 800 nm, also known as the visible spectrum, can cause a variety of effects depending on its wavelength and intensity. This type of radiation is characterized by its oscillating electric and magnetic fields, which propagate through space at the speed of light.

One of the primary effects of electromagnetic radiation in this range is electronic, vibrational, and rotational transitions in molecules. This is because the energy of the radiation is sufficient to excite electrons in atoms and molecules, causing them to move to higher energy levels.

Additionally, electromagnetic radiation in this range can also cause vibrational and rotational excitation in molecules. Vibrational excitation occurs when the radiation causes the bonds in a molecule to vibrate, while rotational excitation occurs when the molecule itself rotates due to the interaction with the radiation.

These effects are important in many fields, such as chemistry, physics, and biology. For example, the absorption of electromagnetic radiation in the visible spectrum by pigments in the human eye is what allows us to see color. Similarly, the absorption of radiation by molecules in photosynthesis is what allows plants to convert sunlight into energy.

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Answer:

The pan on the bottom right with the arrows pointing up.

Explanation:

conduction is the transfer of heat through touching surfaces, so when you place the pan on a hot stove, the heat heats up the bottom of the pan, and then the water in it.

The transfer of energy between systems through work is the expansion of gas in a steam engine. Therefore, the second diagram in the second row shows the correct direction of flow of heat.

Energy transfer is a phenomenon in which energy transfer from one matter to another matter. Energy can be transferred in two forms that are by doing work or by transferring heat.

Heat can be transferred by three ways conduction, convention and radiation. In conduction, when two object are in direct contact, transfer of molecules takes place. When heat flow through touching surfaces is called conduction. Heat flows in the upward direction from bottom in a pan.

Therefore, the second diagram in the second row shows the correct direction of flow of heat.

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Answer:-Science have researched more facts and cool things about it-It would have more facts and things to learn-The quality would be better and more understandingI just tried 3 quick ideas I hope it can help a bit

Explanation:

Answer:

the answer is you should know this already :)))))))))))))))))))))))))))))))))))))))))))))))))))

Answer:

1.78 g/L

Explanation:

Answer:

No

Explanation:

There is a chart made just for density. It finds whatever liquid you want based on the density. 2 liquids cannot have the same density.

Answer:

It can use a small amount of sunlight for photosynthesis

Explanation:

Seaweeds are a group of marine plants/algae that grow attached to rocks underwater. However, despite their depth underwater, they still perform photosynthesis, which is a process that requires energy from sunlight.

Seaweeds are able to perform photosynthesis underwater because they are efficient users of sunlight energy. Hence, they require only a small amount of sunlight that penetrates the ocean to perform photosynthesis.

Answer:

Activation energy is called the energy required to initiate a chemical reaction.

Explanation:

Ernest Rutherford’s model of the atom, first proposed in 1911, is one of the most important discoveries in the history of science. This model of the atom was revolutionary, as it improved upon J.J. Thomson’s “plum pudding” model and established a new understanding of the structure of the atom.

Rutherford’s model of the atom proposed that the atom was composed of a small, positively charged nucleus surrounded by negatively charged electrons. This structure was in contrast to Thomson’s model, which proposed that the atom was a homogeneous “plum pudding” composed of positive and negative charges. Rutherford’s model also proposed that the electrons orbited the nucleus in a manner similar to the way planets orbit the sun in the solar system, although the electrons did not have set orbits.

Rutherford also established that the alpha-particles (helium nuclei) are four times as heavy as a hydrogen atom. This discovery was made through the famous Gold Foil Experiment, in which Rutherford and his team of scientists sent alpha particles through a thin sheet of gold foil. The results of this experiment led Rutherford to conclude that the atom was not homogeneous.

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