2. 03 Conservation of Mass Activity Worksheet

Answer:

They have different DNA and different physical appearance

Explanation:

Because if the sperms fertilize two different eggs the DNA will be different too and if the sperms are different the physical appearance will be different also

The half life is the time taken for only one of the half  of the radioactive substance to remain.

The half life is the time taken for only one of the half  of the radioactive substance to remain. We can see the half life by looking at the graph and observing the point at which the sample decreases to half its original number.

Since the half life of carbon-14 is 5700 years, after ten half lives, almost 60000 years has elapsed thus there is little or no carbon-14 left. As a result of this carbon-14 can not be used if the sample is over 60000 years old.

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In order to calculate molar mass of C4H5N302BrF, we have to add molar mass of each element, multiplied by number of moles)

0. Molar Mass Carbon = (4*12, 0107 )= 48.0428

1. Molar Mass hydrogen = (5*1,00784)= 5.0392

2. Molar Mass nitrogen =( 3* 14,0067)= 42.0201

3. Molar Mass Oxygen = ( 2 *15,999) = 31.998

4. Molar Mass Bromine = (1*79,904) =79,904

5. Molar Mass Flourine =(1*18.998403 ) = 18.998404

• Molar MassC4H5N302BrF =( 48.0428 + 5.0392+42.0201+31.998 +79,904 +18.998404)g/mol

= 226.002g/mol

Butane < acetone < 1-propanol  is a list of the compounds in order of increasing boiling points.

The intermolecular interactions between molecules in a compound play a major role in boiling point. Higher boiling temperatures are a result of greater intermolecular interactions, bigger masses, and less branching.

The highest boiling point is for HF. As we go from HF to HI, the van der Waals forces of attraction between all hydrogen halides get stronger.

Boiling point rises as the difference in electronegativity grows. Additionally, the bp grows as the molecule's size does. So the sequence is CO2, CS2, CCl4, and then H2O.

Van der Waals attraction and dipole-dipole attraction draw acetone molecules together.

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2 electrons are transferred from each Hg^2+ ion to each NO molecule, for a total of 4 electrons transferred.

To balance the equation under acidic conditions, we need to add H+ ions and water molecules. The balanced equation is:

2NO + 2Hg^2+ + 4H+ --> 2HNO3 + 2Hg + H2O

Water appears in the balanced equation as a product with a coefficient of 1.

To determine the number of electrons transferred in the reaction, we need to calculate the oxidation states of the elements involved.

The oxidation state of N in NO is +2, in HNO3 it is +5. The oxidation state of Hg in Hg^2+ is +2, and in Hg it is 0.

Therefore, 2 electrons are transferred from each Hg^2+ ion to each NO molecule, for a total of 4 electrons transferred.

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Radiation is the emission and propagation of energy in the form of waves, rays, or particles. There are three main types of radiation Non-ionizing radiation , Ionizing radiation, and Neutrons.

Non-ionizing radiation is the release of energy from the lower-energy region of the electromagnetic spectrum. Ionizing radiation is radiation with sufficient energy to remove an electron from an atomic orbital, forming an ion. Neutrons are particles found in the atomic nucleus.

Radiation includes the emanation of any portion of the electromagnetic spectrum, plus it includes the release of particles. An example is a burning candle that emits radiation in the form of heat and light. Radiation is the release of energy, whether it takes the form of waves or particles. Radioactivity refers to the decay or splitting of an atomic nucleus. A radioactive material releases radiation when it decays.

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Answer:

Explanation:4

where is the directions here?

I cannot answer this if no directions

I hope this helps.

the first line would be SN, 50, 50, 69

second line would be PT, 78, 78, 117

third line would be MO, 42, 42, 54

fourth line would be NI, 28, 28, 31

fifth line would be U, 92, 92, 146

To solve this question we will assume that the moles of gas do not change and that the gas behaves like an ideal gas.

For an ideal gas we have that its behavior will be according to the following equation:

Where,

P is the pressure of the gas, in atm

V is the volume of the gas, in liters

n are the moles of the gas

T is the temperature of the gas, in Kelvin

R is a constant, 0.08206 atm.L/mol.K

We have for this gas two states, an initial state (1) and a final state (2), so for each state we can apply the ideal gas law, we will have:

Initial state:

Final state:

Since nR are constants, we can equate both equations:

For each state the conditions of pressure, volume and temperature will be:

P1=1.00atm

V1=195mL = 0.195L

T1=20°c = 293.15K

P2= 600mmHg=0.79atm

T2=60°C=333.15K

V2=Unknown

We clear V2 and replace the known data:

Answer: The final volume of the gas will be 280mL

Provider Information is not required (for secondary containers used in the workplace) on a hazardous material label.

The following components need to be on a label to be GHS compliant:

Identification of the product

warning or danger as a signal word

Risk pictograms

Advisory statements

Statements of caution

Provider Information (not required for secondary containers used in the workplace)

If the primary container fails, secondary containment acts as a backup barrier to prevent leaking into an exposed area. It is necessary to store all containers of hazardous waste and liquid hazardous materials in an appropriate secondary containment system. Systems for secondary containment may include

What information must be on labels for chemicals used at work?

The warning or signal phrase "Danger," "Warning" pictograms, "Hazmat" or "Precautionary" remarks, and "Product" and "Supplier" identification signs (supplier identification is not required for secondary containers used in the workplace)

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As a lead-acid battery is discharged, the pH of the solution in the battery decreases.Additionally, the voltage of the cell decreases as the battery discharges.

As a lead-acid battery is discharged, the pH of the solution in the battery decreases. This is because the overall reaction of the battery results in the production of hydrogen ions (H+) at the negative electrode and the consumption of hydrogen ions at the positive electrode. The accumulation of H+ ions at the negative electrode causes the pH to decrease.

Additionally, the voltage of the cell decreases as the battery discharges. This is because the availability of reactants decreases as the reaction progresses, resulting in a decrease in the driving force for the reaction. The voltage of a lead-acid battery is directly proportional to the concentration of sulfuric acid (H2SO4) in the electrolyte. As the battery discharges, the concentration of sulfuric acid decreases, leading to a decrease in voltage.
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Answer:

NO2=Nitrogen dioxide

KCL=potassium chloride

NH3=Ammonia

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  

Answer:

because it does not cost much and can be found easily.  due to their low resistance and excellent conductivity.

Explanation:

To provide you with an accurate answer, I would need more information about the specific reaction and starting material. However, I can still help you understand the terms and concepts involved in an aromatic organic reaction.

1. Aromatic: An aromatic compound is a molecule that contains a ring of atoms with alternating single and double bonds, which follow Huckel's rule (4n + 2) for the number of π electrons. These compounds are generally stable and exhibit unique properties, such as strong odors. Benzene is the simplest and most common example of an aromatic compound.
2. Organic product: An organic product is a compound that is formed as the result of an organic reaction. It typically consists of carbon, hydrogen, oxygen, nitrogen, or other elements bonded together in a specific arrangement.
3. Reaction: A reaction refers to the process in which chemical substances (reactants) are transformed into different substances (products) by breaking and forming chemical bonds.
To draw the correct aromatic organic product for a given reaction, follow these steps:
Step 1: Identify the starting material and any reagents or catalysts involved in the reaction.
Step 2: Analyze the reaction mechanism, which will determine the types of bonds that will be broken and formed during the reaction.
Step 3: Use the reaction mechanism to predict the product(s) formed from the starting material, making sure that the product retains its aromatic properties.
Step 4: Draw the product(s) using proper chemical notation, such as skeletal or Lewis structures.
If no reaction occurs, simply draw the starting material as it remains unchanged. Remember that I would need specific information about the reaction to provide you with a detailed answer.

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The ability of microbes to utilize N2 as a nitrogen source is called Nitrogen fixation.

Nitrogen fixation refers to the process by which certain microorganisms convert inert atmospheric nitrogen (N2) into biologically useful forms of nitrogen. Nitrogen is a crucial component of amino acids, which are building blocks of proteins and nucleic acids (DNA and RNA) essential for life.Nitrogen fixation is classified into two categories: atmospheric and industrial. Nitrogen fixation by industrial processes includes Haber-Bosch and Ostwald processes while biological nitrogen fixation is a natural process. Biological nitrogen fixation is carried out by some free-living soil bacteria, symbiotic bacteria present in the root nodules of leguminous plants, and some other groups of bacteria that live in symbiotic associations with various types of plants.

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This problem is providing us with the mass (70 g), absorbed heat (96 J) and initial and final temperatures (293 K and 313 K, respectively) so the specific heat of the material is required and found to be 0.0686 J/(g*K) as shown below:

In chemistry, we can go over calorimetry by writing the following relationship among heat, mass, specific heat and temperature change:

\(Q=mC(T_f-T_i)\)

Thus, one can get the specific heat by solving for C in the previous equation:

\(C=\frac{Q}{m(T_f-T_i)}\)

Hence, we can plug in the given data to obtain:

\(C=\frac{96J}{70g(313K-293K)}\\ \\C=0.0686\frac{J}{g*K}\)

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Answer:

condenser is the answer

Answer:

condenser is the answer

Answer:

Fluorine

Explanation:

It is a non-metal does not conduct electricity

The poorest conductor of electricity is fluorine.

All of these are metals and metalloids so they are the good conductor.

Calcium

silicon

cobalt

sodium

Fluorine is a nonmetal so it is not a good conductor.

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it is a 0 degrees on the Kelvin scale

it is also the lowest on the thermometer

also the particles stop moving and all disorder disappears.

Carbon monoxide poisoning is a likely cause if a diver complains of a headache and nausea, and their lips are redder than normal after a dive.

Carbon monoxide poisoning occurs when a diver inhales exhaust fumes from a boat or poorly maintained compressor while filling their tanks with air. The symptoms of carbon monoxide poisoning include headache, nausea, and reddening of the lips, which can be mistaken for decompression sickness.

Carbon monoxide poisoning can be a serious condition and should be treated immediately by seeking medical attention. Divers can prevent carbon monoxide poisoning by ensuring that they only fill their tanks with air from a reputable source and by avoiding areas with exhaust fumes. Additionally, divers can use carbon monoxide detectors to test the air in their tanks before diving.

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Answer:

new substances

Explanation:

Atoms of different elements can combine to make new substances. A molecule is formed when two or more atoms join together chemically. If atoms combine that are of two or more different elements, we call that a compound. All compounds are molecules, but not all molecules are compounds.

As a result, the material with the lowest boiling point will have the maximum vapor pressure at ambient temperature. The material with the lowest vapor pressure is that which has the greatest boiling point.

What variables influence vapor pressure?

Vapor pressure is the name given to the force produced when liquids evaporate. Three factors that typically affect vapor press performance are surface area, intermolecular forces, and temperature. Molecules have variable vapor pressures depending on their temperature.

What is vapour pressure, for instance?

It is essential to remember that a liquid's vapor pressure is equal to the atmospheric pressure while it is boiling. For instance, water's vapor pressure when it boils at sea level is 1 atmosphere since the surrounding pressure is also 1 atmosphere.

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Answer:

The one with mass number 28

Explanation:

Because that's  the mass number the average mass is closer too

6. 75 g NaCl dissolved in water to make a solution with a total volume of 0. 452. The molarity of the NaCl solution is 2.84 M.

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

To find the molarity of a solution containing 75 g of NaCl in 0.452 L of water, we need to first calculate the number of moles of NaCl.

The molar mass of NaCl is 58.44 g/mol (22.99 g/mol for Na + 35.45 g/mol for Cl). Therefore, the number of moles of NaCl in 75 g can be calculated as:

75 g / 58.44 g/mol = 1.283 moles

Now, we can calculate the molarity of the solution by dividing the number of moles of NaCl by the volume of the solution in liters:

Molarity = moles of NaCl / volume of solution in liters

Molarity = 1.283 moles / 0.452 L

Molarity = 2.84 M

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