How to treat stream water for drinking

The average atomic mass of her sample is 114.54 amu

Let the 1st isotope be A

Let the 2nd isotope be B

From the question given above, the following data were obtained:

The average atomic mass of the sample can be obtained as follow:

\(Average \: atomic \: mass \: = \frac{mass \: of \: A \times A\%}{100} + \frac{mass \: of \: B \times B\%}{100} \\ \\ Average \: atomic \: mass \: = \frac{113.6459\times 59.34}{100} + \frac{115.8488\times 40.66}{100} \\ \\ Average \: atomic \: mass \: = 114.54 \: amu \\ \\ \)

Thus, the average atomic mass of the sample is 114.54 amu

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Answer:

Mass number is a whole number because it is the sum of number of proton and number of neutrons whereas atomic mass is fractional because it is the average relative mass of its atoms as compared with mass an atom of C-12 isotope taken as 12.

hope it helps you

Answer:

Calm down is this what you need?

Answer:

calm down, what kind of container and things do you need?

Explanation:

The ideal gas relationships among the variables are PV = nRT

An ideal gas is a theoretical gas composed of many randomly transferring factor particles that aren't difficult to interparticle interactions. the best gasoline idea is beneficial because it obeys the precise gas law, a simplified equation of country, and is amenable to evaluation under statistical mechanics.

Volume is a degree of occupied three-dimensional space. it's far more frequently quantified numerically the usage of SI-derived gadgets or by way of diverse imperial gadgets. The definition of length is interrelated with the extent.

An ideal gas is described as one for which both the extent of molecules and forces between the molecules are so small that they have got no effect on the behavior of the gas. The real gas that acts almost like a really perfect gasoline is helium. that is due to the fact helium, in contrast to maximum gases, exists as an unmarried atom, which makes the van der Waals dispersion forces as low as viable

relation

PV = nRT

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Answer:

sorry i dont know

Explanation:

The following is involved in bonding between atoms is electron

There are four type of chemical bonds essential for life to exist and it is ionic bond, covalent bond, hydrogen bond, and Vander wall interaction and all of these are different kind of bond to play various role in biochemical interaction and the electron on the outermost energy level of the atom are called valence electron and the valence electron are involved in bonding one atom yo another

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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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By focusing on certain fields, precision management can assist farmers in using less fertiliser. Option D is the right choice as a result.

In 1994, Precision Management was founded with the express purpose of offering customers comprehensive, effective, and personalised property management services while concentrating on and achieving their goals and objectives. Precision has developed friendships as well as commercial ties during the past 25 years. Our clients value Precision's distinctive, hands-on management approach and the company's overall commitment to their assets. By focusing on certain fields, precision management can assist farmers in using less fertiliser.

Therefore, the correct option is option D.

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you can use this method to balance any equation,

write you elements down , then start balancing them one after the other,

starting from metals , to non metals

it's better to balance hydrogen and oxygen the last and in most cases , they are automatically balanced

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The required partial pressure of argon gas present in the mixture is 1.02 atm.

Dalton's law of gas states that total pressure of any mixture of gas is sum of the partial pressure of all the gases present in that mixture.

Given that,

Total pressure of mixture = 2.4 atm

Partial pressure of argon = ?

Partial pressure of oxygen = 128 mmHg = 0.168 atm

Partial pressure of helium = 167.5 mmHg = 0.220 atm

Partial pressure of neon = 760 mmHg = 1 atm

On putting all these values according to the definition we get the partial pressure of argon gas as:
Partial pressure of argon = 2.4 - (0.168 + 0.22 + 1) = 1.02 atm

Hence required partial pressure of argon gas is 1.02 atm

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Your answer is FE, or iron!

Answer:The pressure exerted by the gas is 100kPa

Explanation:Let's apply the Charles Gay Lussac law, to solve the question.

At constant volume, the pressure varies proportionally with the temperature.

P initial / T° initial = P final / T° final

50kPa / 20°C = P final / 40°C

Temperature has increased the double, so the pressure will be increased, the double too.

100 kPa

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The object's mass is 2.756 g/mL as a result.

Give the object's density Do and water's density Dwater. The object's weight in the air is then given by Mair = Do * V. Mwater = (Do - Dwater) times V is the formula for calculating an object's weight in water. Volume V cancels out when one equation is divided by the other, and the ratio of the two measurements is Mair/Mwater = Do/.(Do - Dwater).

The following formula can be used to determine an object's density:

Density = Mass / Volume

where the object's mass is specified as 13.1045 g, and the volume is the amount of water that has been moved.

The water level rises by 4.75 mL when the object is submerged, which means that the volume of water displaced is 4.75 mL.

Density = 13.1045 g / 4.75 mL = 2.756 g/mL

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Answer:

The water falls to the earth as precipitation, such as rain, hail, sleet, and snow. When precipitation reaches the earth's surface, some of it will flow along the surface of the land and enter surface water like lakes, streams, and rivers, as runoff. The rest of it soaks or percolates into the soil, called

Answer:

Explanation:

m= 80.0 g

Cp=0.8 J/gc

Change in T= 25

q=Cp X m X T  =0.8 X 80.0 X 25 =1600J

Postive q or enthalpy makes it endothermic.

a. To ensure that the acid hydrolysis of an ester proceeds to completion, an excess of dilute hydrochloric (or sulfuric) acid is utilized.

Esters require an acid catalyst to hydrolyze since they are typically less reactive than carboxylic acids.

To ensure that there are enough acid molecules to interact with every ester molecule and cause complete hydrolysis, there is an excess of acid.

b. The equation for the acid hydrolysis of methyl propanoate is:

CH3CH2COOCH3 + H2O ⇌ CH3CH2COOH + CH3OH

The products are propanoic acid and methanol.

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The term that refers to the passing of a wave through an object is "transmission."

Transmission refers to the process by which a wave passes through an object or medium. In the context of sound, transmission occurs when sound waves travel through different substances, such as air, water, or solids.

When a sound wave encounters an object, it can be transmitted through it, reflected off it, or absorbed by it, depending on the properties of the object and the medium through which the sound is traveling.

For example, when you speak into a microphone, the sound waves produced by your voice travel through the air and are transmitted to the microphone's diaphragm. The diaphragm converts the sound waves into electrical signals, which can then be amplified and reproduced as sound through speakers.

In summary, transmission is the term used to describe the passage of a wave, such as a sound wave, through an object or medium. It is an essential concept in understanding how waves interact with their surroundings and how sound propagates through different materials.

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Two correct answers which describe how water mixes in a thermohaline current are A. Cold water sinks under warmer water. And D. Saltier water sinks under less salty water.

Thermohaline Current is caused by variations in the seawater's surface density from pole to equator. Variations in temperature (thermal) and salinity (haline) affect the equator-to-pole surface. On Earth's climate, the thermohaline ocean currents have a significant impact on circulating heat across the planet.

In the thermohaline current, warmer, fresher water masses are less dense and float, while colder, saltier water masses are more dense and sink. Due to its higher density, this cold, salty water sinks.

So, it is obvious that the correct answers are:

A. Cold water sinks under warmer water.

D. Saltier water sinks under less salty water.

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Answer:        HHHHHHHHHHHHHHHHHHHHHHAHAHHAHAHHAHHAHHAHHAHHAHAHAHHHAHAHAHHAHAHHA

DON"T KNOW?

Explanation:

hey sisterrrrrrrrrr its ginger charles here i hear you looking for the answer well this is your lucky day the answer is

Explanation:

The concentration of Bovine Hb with absorbance 0.7 at 570 nm has been 2.264 \(\mu\)M.

According to Beer's law, the absorbance of the sample can be given by:

Absorbance = Extinction coefficient \(\rm \times\) concentration \(\times\) path length

The Bovine Hb has the extinction coefficient = 30910 L/mol/cm

The absorbance = 0.7

The path length has been 1 cm.

The concentration of the Bovine Hb can be given as:

0.7 = 30910 \(\times\) concentration \(\times\) 1

The concentration of Bovine Hb = 2.264 \(\rm \times\;10^-^6\) moles/L

The concentration of Bovine Hb = 2.264 \(\rm \mu\)moles/L

The concentration of Bovine Hb = 2.264 \(\mu\)M.

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Answer:

4.54g of Tris base,25mL of the 0.25M stock solution of glucose and 7.5mL of the 5M stock solution of NaCl must be added and complete the volume in a volumetric flask to 250.0mL

Explanation:

To prepare the single solution we need to find the moles of each solute (Tris, glucose and NaCl) from the stock solutions anf the solid:

Moles Tris:

0.250L *(0.150mol / L) = 0.0375moles Tris * (121.1g/mol) = 4.54g of Tris base must be added

Moles glucose:

0.250L * (0.025mol/L) = 6.25x10⁻³mol glucose * (1L / 0.25mol) = 0.025L = 25mL of the 0.25M stock solution of glucose must be added

Moles NaCl:

0.250L * (0.150mol / L) = 0.0375mol NaCl * (1L / 5mol) = 0.0075L =

7.5mL of the 5M stock solution of NaCl

You must add:

4.54g of Tris base,25mL of the 0.25M stock solution of glucose and 7.5mL of the 5M stock solution of NaCl must be added and complete the volume in a volumetric flask to 250.0mL

The addition of \(O_2(g)\) will shift the equilibrium towards the right side of the reaction and will consume \(Cl_2(g)\).

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Answer:

A, Makes the leg move

Explanation:

To determine the original pressure of a 750 ml sample of helium (He) at 0 degrees Celsius, we can use the combined gas law, which relates the initial and final conditions of a gas sample. The combined gas law equation is:

(P1 × V1) / (T1) = (P2 × V2) / (T2)

Where:

P1 and P2 are the initial and final pressures, respectively.

V1 and V2 are the initial and final volumes, respectively.

T1 and T2 are the initial and final temperatures, respectively.

Let's assign the given values:

P1 = unknown (original pressure)

V1 = 750 ml (initial volume)

T1 = 0 degrees Celsius (initial temperature)

P2 = 2 atm (final pressure)

V2 = 500 ml (final volume)

T2 = 25 degrees Celsius (final temperature)

Before using the combined gas law equation, we need to convert the temperatures to Kelvin scale by adding 273.15 to both T1 and T2:

T1 = 0 + 273.15 = 273.15 K

T2 = 25 + 273.15 = 298.15 K

Now we can plug in the values into the combined gas law equation:

(P1 × 750 ml) / (273.15 K) = (2 atm × 500 ml) / (298.15 K)

To solve for P1, we can cross multiply and rearrange the equation:

P1 = (2 atm × 500 ml × 273.15 K) / (750 ml × 298.15 K)

P1 = 0.924 atm

Therefore, the original pressure of the 750 ml sample of helium at 0 degrees Celsius is approximately 0.924 atm.

Control of metal-support interactions (MSIs) in heterogeneous catalysts can enhance both activity and selectivity.

MSIs refer to the interactions between the metal catalyst and the support material it is placed on. By fine-tuning the MSIs, the activity of the catalyst can be increased by optimizing the distribution and dispersion of the metal particles. In addition, by controlling the MSIs, the selectivity of the catalyst can be improved, allowing for the production of specific products in a reaction. This is done by manipulating the electronic and geometric properties of the metal-support interface, which affect the adsorption and activation of reactant molecules.

In general, controlling MSIs is a powerful way to make heterogeneous catalysts work better.

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Mole measure the number of elementary entities of a given substance that are present in a given sample. Therefore, there are 8.41×10⁻¹⁸moles of oxygen in 5.07x10⁶atoms of oxygen.

The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity of amount of substance.

Given number of atoms= 5.07x10⁶atoms

we know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number.

mole =given number of atoms ÷ 6.022×10²³(Avogadro number)

Substituting the values

mole of oxygen=5.07x10⁶÷ 6.022×10²³

mole of oxygen =8.41×10⁻¹⁸

Therefore, there are 8.41×10⁻¹⁸moles of oxygen in 5.07x10⁶atoms of oxygen.

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If heat is going into the system, then energy must have come out from the surroundings.

If heat is entering a system, it means that the system is gaining thermal energy, which can lead to an increase in temperature, changes in state, or other effects depending on the nature of the system and the heat transfer mechanism.

The first law of thermodynamics, also known as the law of conservation of energy, states that the total amount of energy in a closed system remains constant, and energy can neither be created nor destroyed, only transferred or converted from one form to another.

When heat enters a system, it is either used to increase the internal energy of the system or to perform work, such as moving a piston or driving an electrical generator.

The amount of heat transferred to a system can be quantified using the equation Q = mcΔT, where Q is the heat transferred, m is the mass of the substance, c is its specific heat capacity, and ΔT is the change in temperature.

Therefore, if the system is gaining energy in the form of heat, then the surroundings (the rest of the universe) must be losing that same amount of energy. This is because energy is conserved.

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Answer:

B

Explanation:

neutrons + atomic number/proton/electron for a neutral atom = mass number

e.g

mass number of Chlorine 35.5

proton number 17

neutron number will be 35.5-17 = 18.5

Therefore.....

your question deduced says

atomic number is 5

mass number is 11

neutron number is however mass number minus atomic number 11-5 =6