what is the ion concentration of 0.05 M Cacl2?

The correct equation for impulse is FΔt. The third option.

In mechanics, the impulse is the amount of force applied to an object for a certain amount of time leading to a change in the momentum of the object.

The impulse is mathematically expressed as:

Impulse = FΔt

Where F is the amount of force applied in Newton and Δt is the changes in the time spent applying the force. In other words, impulse is the product of force in Newtons and time in seconds.

Thus:

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The number of atoms in 29.0grams of sodium, Na is 7.58 × 10²³ atoms.

The number of atoms of a substance can be calculated by multiplying the number of moles in the substance by Avogadro's number; 6.02 × 10²³.

no of atoms = no of moles × 6.02 × 10²³

According to this question, there are 29.0 grams of sodium (Na). The number of moles can be calculated as follows:

moles = 29.0g ÷ 22.99g/mol = 1.26mol

No of atoms = 1.26 mol × 6.02 × 10²³

no of atoms = 7.58 × 10²³ atoms

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The speed of the sound would increase as the wave speed increase.

We have to know that the speed of the sound is dependent on the wavelength and the relationship is a direct relationship if the frequency of the sound has been kept as a constant.

We can now be able to write that;

v = λf

v = wave speed

f = frequency

λ = wavelength

Now we can see that is we increase the wavelength of the sound then the wave speed of the sound would also increase .

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The mass of Fluorine in grams in the second sample is 2066 g. The concept law of definite proportions is used here to obtain the mass of Fluorine in the second sample.

This law was stated by a French chemist, Louis Proust. It states that 'a chemical compound always contains the same elements combined together in the same proportion by mass'.

The mass of Mg in sample 1 is 1.66 kg and that of F is 2.56 kg. The mass of Mg in sample 2 is 1.34 kg and we have to find out the mass of F in second sample.

The mass of Fluorine in sample 2 can be obtained by using the mass ratio of the elements in sample 1.

In sample 1:

Mass of magnesium ÷ Mass of Fluorine = 1.66 kg ÷ 2.56 kg

In sample 2:

By using dimensional analysis,

Mass of Fluorine = 2.56 kg Fluorine ÷ 1.66 kg Magnesium × 1.34 kg Magnesium

Therefore the mass of Fluorine = 2.066 kg

The mass in kilogram can be converted into grams as:

Mass of Fluorine = 2.066 kg × 1000 g ÷ 1 kg = 2066 g

Thus the mass of Fluorine in the second sample is 2066 g.

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Mountains can evolve in a variety of ways over time. They are susceptible to erosion from rain and wind, as well as landslides caused by flooding. Volcanic activity causes some mountains to change. They may also change as a result of earthquakes and tectonic plate movement.

A volcanic eruption occurs when lava and gas are expelled from a volcano, sometimes violently. A 'glowing avalanche,' which occurs when freshly erupted magma flows down the sides of a volcano, is the most dangerous type of eruption.

The heat from the mantle plume melts and thins the crust, resulting in surface volcanic activity.

Thus, In figure 3 there are two images one is millions of years ago and another is present day image. In both the images mountains are different because of erosion from rain and wind, as well as landslides caused by flooding.

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Insulation is the process of constructing a barrier between hot and cold objects that prevents heat from transferring between them by either reflecting thermal radiation or reducing conduction and convection.

What reduces thermal energy transfer?

The prevention of heat transfer between surfaces that are in thermal contact or within a radiative influence zone is known as thermal insulation. In addition to using the right item forms and materials, specially engineered technologies or processes can also be used to provide thermal insulation.

Thermal insulation prevents heat from moving from one substance to another when they are in thermal contact.

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A brewed black tea generally has 81.30 milligrams of TA per 100 mL of water (which is to say it is at equilibrium). If a tea bag is steeped in 150. mL of water, 54.2 is the concentration of TA at equilibrium.

A substance's concentration is the amount of solute present in a given amount of solution. Molarity is the number of moles of solute in one liter of solution and is used to express concentrations.

Given:

M₁ = 81.30 milligrams

M₂ = ?

V₁ = 100ml

V₂ = 150ml

M₁V₁ = M₂V₂

By substituting given values in this equation and we get,

81.30 × 100 = M₂ × 150

M₂ = 81.30 × 100 / 150

= 54.2

Thus,  54.2 is the concentration of TA at equilibrium.

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3.68*10-5 m/s is the average reaction speed for this time frame. a single rate that is a weighted average of the different rates that are applicable to property in various locations.

It is described as "the ratio of change in reactant or product concentration to change in time in a chemical process." The average rate of the reaction will be negative as the rate of reactant concentration declines. The average rate of reaction will be favorable as the rate of product concentration rises.

2NO(g)+O2(g) -> 2NO_2(g)

Rate = -1/2 d[No]/dt

Average Rate = -1/2[0.0225-0.0700/650-5]

            = 3.68*10^-5 m/s

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Answer:

no one can really be sure who was the very first human in america, but the Clovis people were the 1st type of people to populate the US. If you meant the person who founded america then Christopher Columbus would be your answer.

Also, not part of the answer, but this is marked in chem? not sure its supposed to be.

Gold (atomic mass=197) is plated from a solution clauric acid H4UCl4, It deposits on the cathode. The time to deposit 0.50g of gold passing a current of 0.10 is 2.4 hour.

The movement of electrons through a wire is referred to as electric current. The number of charges that move through the wire per second is measured in amperes (amps).

One mole of gold require 3 mole electron

Mass of gold deposited = 0.50g

Molar mass of gold = 197g

No of mole of gold = 0.50g/197g

= 0.0025

No of electron required = 3 × 0.0025

= 0.0076

1mole of electron having the charge of 96485C

Therefore, Columns for 0.0076 mole of electron = 940.43C

0.1 A current means 0.1 Columbs per second

Therefore, time to deposit 0.50g of gold = 940.44/0.1

= 9404.4second

= 2.4 hour

Thus, the time to deposit 0.50g of gold passing a current of 0.10 is 2.4 hour.

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Answer:

The ground state electron configuration of Sr (Strontium) is 1s22s22p63s23p64s23d104p65s2. This means that the electrons in the Sr atom occupy the lowest possible energy levels available to them. The electron configuration is written as a series of numbers and letters that indicate the number of electrons in each orbital. In this case, the first electron goes in the 1s orbital, the next two electrons go in the 2s orbital, the next six electrons go in the 2p orbital, the next six electrons go in the 3s orbital, the next six electrons go in the 3p orbital, the next ten electrons go in the 4s orbital, and the final two electrons go in the 5s orbital. When Sr is heated and its electrons are excited, they absorb enough energy to jump to higher energy levels. When these electrons then return to the ground state, they emit light of a specific frequency or color.

Not enough information man

To convert from Celsuis to Kelvin, add 273 or vice versa to convert from Kelvin to Celsuis.

So 60 Celsius + 273 = 333K

and 25 + 273 = 298K

Therefore we can see the decrease in temperature in units of degrees and Celsuis is 35.

When baffles are present, the liquid becomes more turbulent and power is used more effectively. A sparger is a tool used to introduce air into the fermentor vessel below the liquid level.

In order to ensure that bubbles are distributed equally throughout the flotation cell or leach tank, industry tools called spargers are used to inject gas into these tanks. Isostatic pressing is used to create sparger elements from sintered metal powder. The material is subsequently compressed in a vessel with a solid steel core that is under pressure and filled with 900°C liquid.

An essential component of the vessel's mixing mechanism, a baffle encourages greater fluid flow for maximum effectiveness. By transforming the swirling into the correct flow pattern.

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According to law of conservation of mass, the mass  of the liquid is 7.10 grams.

According to law of conservation of mass, it is evident that mass is neither created nor destroyed rather it is restored at the end of a chemical reaction .

Law of conservation of mass and energy are related as mass and energy are directly proportional which is indicated by the equation E=mc².Concept of conservation of mass is widely used in field of chemistry, fluid dynamics.

According to law, mass of liquid= mass of flask and liquid-mass of liquid= 102.551-95.451=7.1 00 g.

Thus,  the mass  of the liquid is 7.10 grams.

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Answer:

false

Explanation:

Significant figures are the meaningful digits in a number that convey its precision. In scientific and technical calculations, the number of significant figures is used to express the level of accuracy of a measurement or calculation.

a. 225.0 - 4 significant figures

c. 0.0003210 - 5 significant figures

b. 1000.0 - 4 significant figures

d. 0.0067 - 3 significant figures

e. 1,000,000. - 7 significant figures

f. 2.00001 - 5 significant figures

Rounding to three significant figures:

a. 15.9994 -> 16.0

c. 0.6654 -> 0.67

e. 87,550 -> 87,000

b. 1.0080 -> 1.01

d. 4885 -> 4,900

f. 0.027225 -> 0.0272

Arithmetic operations rounded to the appropriate number of significant figures or decimal places:

a. 77.981 x 2.33 = 182.0 (3 significant figures)

b. 4 x 0.0665 = 0.266 (3 significant figures)

c. 17.344.900 + 23.1 = 17.345 million (1 decimal place)

d. 9.80 - 4.762 = 5.038 (3 significant figures)

e. 3.9 x 6.05 x 420 = 9,658 (3 significant figures)

f. 14.1 / 5 = 2.82 (3 significant figures)

g. 1001 + 16.23 = 1017 (3 significant figures)

h. 424.5 + 2.8461 = 427.3 (3 significant figures)

i. 9.9 - 9.54 = 0.36 (2 significant figures)

j. 7.3778 - 0.000265 = 7.378 (4 significant figures)

k. (24.358)(6.4) = 155 (2 significant figures)

l. (48.6)(0.6959) = 33.7 (2 significant figures)

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CO2(g) + H2(g) CO(g) + H2O(g) Initial no. of moles: 0.45 0.45 0 0 No. of moles

A chemical reaction is said to be in a state of chemical equilibrium when both the reactants and the products have reached a concentration that does not change with time. The rate of forward reaction is the same as the rate of backward reaction in this state.

The ratio of the concentrations of the substances on the right to those on the left equals a constant appropriate for that specific reaction in any equilibrium reaction. It is worth noting that the ratio is always written with the products preceding the reactants.

In chemistry, however, solution concentration is often expressed as a "molarity" (a molar concentration), which is defined as the number of moles of solute divided by the number of litres.

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9.49 x 10^21 atoms of Cu is equivalent to 1.58 x 10^-2 moles of Cu.

To convert the number of atoms of copper (Cu) to moles, we need to use Avogadro's number. Avogadro's number is defined as the number of atoms, ions, or molecules in one mole of a substance. It is equal to 6.022 x 10^23.

The number of moles of Cu can be calculated as follows:

9.49 x 10^21 atoms / (6.022 x 10^23 atoms/mol) = 9.49 x 10^21 / 6.022 x 10^23 mol = 1.58 x 10^-2 mol

If the small amount of MnS is combined with the large amount of HCl, The mass of any excess reactants will also be included in this total is the mass of the beaker with the small amount of MnS(s) and HCl(aq) after reaction is 504.35g.

A balanced chemical equation is one that has the same number of atoms of each type in the reaction on both the reactant and product sides. In a balanced chemical equation, both the mass and the change are equal.

The balance chemical equation is as follows:

MnS(s) + 2HCl(aq) ⟶ MnCl₂(aq) + H₂S(g)

Thus, The mass of any excess reactants will also be included in this total the mass of the beaker with the small amount of MnS(s) and HCl(aq) after reaction is 504.35g.

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Answer:

7.77×10^4=77,700

Explanation:

10^4 is 10,000, since there are 4 zeros in 10,000, move the decimal in 7.77 4 spaces to the right.

1: 77.7

2: 777.

3: 7,770.

4 77,700.

Side note: This trick ONLY works with +/-10^x value. If the value is positive the decimal moves to the right, and if the value is negative the decimal moves to the left.

Example: 7.77×(-10)^3=.00777

(-10)×(-10)×(-10)=(-10)^3= -1000

1: .777

2: .0777

3: .00777

The amount of carbon dioxide produced by the reaction of 8 grams of oxygen with an excess of carbon monoxide is 16 grams.

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Answer:

False

Explanation:

 In a chemical reaction, only the atoms present in the reactants can end up in the products.

No new atoms are created, and no atoms are destroyed.

In a chemical reaction, reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products.

3.26 mL of a solution of 18.4 M H2 SO4 would be required. Therefore, 3.26 ml of that concentrated stock solution is what we need, and it seems like that is the right answer.

Water has been removed from a concentrated liquid to increase its strength. Use honey or concentrated apple or pears juice sparingly to sweeten food. Synonyms: rich, concentrated, undiluted, and reduced More definitions of concentrated.

to guide or draw to a common core or goal: focus. one's attention, concentrate. The lenses concentrate light, which means to collect into one entity, mass, or force. Only a select few skilled hands had all the power.

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Answer:

One Faraday is the charge of one mole of electrons, which is approximately 96,500 coulombs. To calculate the number of Faradays needed to reduce 127 grams of copper to the cuprous form in chlorine, we need to know the balanced chemical equation for the reaction and the equivalent weight of copper.

Explanation:

Answer: 3.61 × 10²³

Explanation:

For the given reaction, increasing the volume of the reaction system will shift the equilibrium to forward reaction. Decreasing the pressure will shift the equilibrium to the reverse direction.

The state of a reaction at which, the back ward and forward reaction takes place in equal rates is called equilibrium state. According to Le -Chatlier's principal, if any disorder imbalance the system, the system will balance it and shift to a new equilibrium state.

When the volume of reactants is increased, the reaction changes to the forward direction in which the increased volume is decreased.  Hence, as the volume increases, forward reaction takes place.

When the pressure is decreased, the reaction will shift to the direction in which the number of moles of gas is increasing to increase the pressure. Here, the reactant side haves the 4 moles of gases and product side have 2 moles of gas.

Hence, decrease in temperature make a shift to the reverse reaction.

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Answer:

40.0L

Explanation: