Hello! I am taking chemistry in Acellus and I'm looking for someone to sign in and help me catch up. I'm willing to give credits, money etc. I just need to pass and be done with it SOON.

Answer:          gugygy

Explanation:

The name given to the container that holds hazardous waste is a hazardous waste drum.

A hazardous waste drum, also known as a Hazdrum, is a container specifically designed to store, transport and dispose of hazardous materials. Hazdrum containers are typically made of a safe and durable material like high-density polyethylene (HDPE) or other approved polymer. They are designed to be strong, leakproof and corrosion resistant, and may also have additional features such as a built-in lid or venting system to help manage pressure build-up. Hazdrum containers may also be labeled with the type of hazardous material being stored, and can be disposed of properly in accordance with local regulations.

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Using the change of base rule to find the logarithm to four decimal places. the correct answer is 11.4235.

To find the logarithm of 143.2 using the change of base rule, we can choose any base we prefer. Let's use base 10 and natural logarithm (base e) for this calculation.

First, we'll use the change of base formula, which states that log(base b) x = log(base c) x / log(base c) b. In this case, we'll calculate log(base 10) 143.2.

We'll use the natural logarithm (ln) as our intermediary step. The natural logarithm of 143.2 can be calculated as ln(143.2).

Using a calculator, we find that ln(143.2) is approximately 4.9628.

Next, we need to calculate log(base 10) e, which is the logarithm of e with base 10. Using a calculator, we find log(base 10) e is approximately 0.4343.

Finally, we apply the change of base formula:

log(base 10) 143.2 ≈ ln(143.2) / log(base 10) e
                ≈ 4.9628 / 0.4343
                ≈ 11.4235

Rounding to four decimal places, the logarithm of 143.2 using base 10 is approximately 11.4235.

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Answer:

A “Lab Diamond” is just like a Natural Diamond, except instead of growing in the Earth, they grow in a lab. The only chemical difference between Lab Diamonds vs Natural Diamonds is that most Natural Diamonds contain tiny amounts of nitrogen, and Lab Diamonds do not.

Explanation:

Answer: 1/ms=8mk

Explanation:

Answer:1) It is due to large cohesive force acting between the molecules of mercury that the droplets of mercury when brought in contact pulled together to form a bigger drop in order to make potential energy minimum. The temperature of this bigger drop increases since the total surface area decreases.  

2) A spherical shape has the minimum surface area to volume ratio of all geometric forms. When two drops of a liquid are brought in contact, the cohesive forces between their molecules coalesce the drops into a single larger drop. This is because, the volume of the liquid remaining the same, the surface area of the resulting single drop is less than the combined surface area of the smaller drops. The resulting decrease in surface energy is released into the environment as heat.  

The new molar concentration of the solution is 0.0653 M. 32.5926 mL of water should be added to 60 g of NaCl to obtain a final concentration of 30% (m/v) NaCl. The final molar concentration of FeSO4 in the solution is approximately 1.5714 M.

The moles of solute before and after dilution are needed to compute the solution's new molar concentration. Dilution maintains solute moles.

Question 1's solution was 0.222 M and 250 mL. 500 mL removed yields 250 mL. Concentration × Volume = 0.222 M × 0.250 L = 0.0555 moles of solute before dilution.

Adding 600 mL of water to the 250 mL yields 850 mL.

0.0555 moles / 0.850 L = 0.0653 M = new molar concentration.

The new solution molar concentration is 0.0653 M.

Calculate the water needed to reach a final concentration of 30% (m/v) NaCl with 60 g of NaCl.

First, we calculate the mass of NaCl needed to reach 30% (m/v):

30% x Total volume x Density = 2.16 g/mL.

60 g NaCl:

60 g=0.3 times (Total volume + 60 mL) x 2.16 g/mL.

Volume calculation:

60 g/(0.3 × 2.16 g/mL) = 92.5926 mL.

92.5926 mL - 60 mL = 32.5926

To get 30% (m/v) NaCl, add 32.5926 mL of water to 60 g of NaCl.

FeSO4's final solution percentage (m/v) can be calculated from the three media components' volumes and concentrations.

7 parts make up the solution's volume.

The solutions' concentrations and volumes can calculate FeSO4's final molar concentration:

The ultimate FeSO4 molar concentration is [(Volume of 2.0 M solution × 2.0 M) + (Volume of 1.0 M solution × 1.0 M)]. Total volume

To simplify, each portion of the solution has a volume of 1 unit (e.g., 1 L, 1 mL).

FeSO4's final molar concentration is 7 units = total volume [(4 × 2.0 M) + (3 × 1.0 M)]. / 7 = (8.0 M + 3.0 M) / 7 = 11.0 M / 7 = 1.5714 M

FeSO4 concentration is 1.5714 M.

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Answer:

hey, i hope this helps

Explanation:

1 - dissolve

2 - liquid

3 - salt

4 - sand

5 - filter paper

6 - filter paper

I'm not really sure of the last two dashes but it's worth the try

Answer:

the eye socket

Explanation:

the area around the eye is called the eye socket or the eye orbit.

If the volume is decreased to 2.6 L and pressure is decreased to 3.2 atm, then temperature become 156.98K.

This problem can be solved by using the concept of Ideal gas equation.

The equation of ideal gas can be expressed as

PV = nRT

where,

P is the pressure of the gas

V is the volume taken

n is the number of moles of the gas

R is the gas constant = 6.314 J/ mol K

T is the temperature

Now from given data, we have the values of

V = 3.2 L

P = 5.5 atm

T = 53°C = 273 + 53 = 326 K

By substituting all the values, we get the value of n

3.2 × 5.5 = n × 6.314 × 326

17.6 = n × 2058.36

n = 17.6 / 2058.36

n = 0.0085 mol

Now, we have to find the temperature

n = 0.0085 mol

V = 2.6 L

P = 3.2 atm

By substituting all the values, we get

3.2 × 2.6 = 0.0085 × 6.314 × T

8.32 = 0.053 T

T = 8.32/ 0.053

T = 156.98 K

Thus, we concluded that if the volume is decreased to 2.6 L and pressure is decreased to 3.2 atm, then temperature become 156.98K.

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Answer: deciding on the appropriate equipment

A(n) molecule is a chemical combination of two or more atoms in definite (fixed) proportions.

Molecules are formed when atoms bond together in specific ratios.

These ratios are determined by the atoms' valence electrons and their ability to form stable bonds.

Molecules can consist of atoms of the same element, like O2 (oxygen gas), or atoms of different elements, like H2O (water).

A molecule is a chemical combination of two or more atoms in definite proportions, resulting from the stable bonding of atoms based on their valence electrons.

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Answer:

những lựa chọn ở đâu?

Explanation:

Hy vọng nó sẽ giúp ích;>

Answer: XCl2(aq) + 2 AgNO3(aq) ---> X(NO3)2(aq) + 2 AgCl(s)

Explanation:

Hehe I remembered how...

Answer:

The answer is B

Explanation:

honestly do

Fisherman's discovery is neither a theory nor a law as it cannot be supported by enough evidence.

Other people cannot reproduce the law or theory of the fisherman. Additionally, he does not disclose how many fish are captured every Wednesday.

Any phenomena or event that arises in the world on its own qualifies as a scientific law.

The occurrence occurs automatically and is visible to everyone.

A scientific law does not explain how or why something occurs. However, it mainly refers to guidelines for how nature will act in specific circumstances.

Principles or natural laws are other names for scientific laws.

Thus, the fisherman findings can't be proven and not applicable to nature, it can't be categorised as a scientific law or a theory.

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The the empirical formula of the hydrocarbon is C2H3.

To determine the empirical formula of the hydrocarbon, we need to find the mole ratios of carbon and hydrogen in the compound.

Given:

Mass of CO2 produced = 33.01 g

Mass of H2O produced = 13.51 g

To find the number of moles of each compound, we divide their masses by their respective molar masses:

Number of moles of CO2 = 33.01 g / (12.01 g/mol + 2(16.00 g/mol)) = 1.002 mol

Number of moles of H2O = 13.51 g / (2(1.01 g/mol) + 16.00 g/mol) = 0.750 mol

Now, we can determine the mole ratios of carbon and hydrogen. Since CO2 contains 1 carbon atom and H2O contains 2 hydrogen atoms, we need to multiply the number of moles of CO2 by 1 and the number of moles of H2O by 2:

Moles of carbon = 1.002 mol × 1 = 1.002 mol

Moles of hydrogen = 0.750 mol × 2 = 1.500 mol

The ratio of carbon to hydrogen can be approximated by dividing both moles by the smallest value (1.002 mol) to get a simplified ratio:

Carbon: Hydrogen ≈ 1:1.497

To obtain whole-number ratios, we can multiply both values by 2:

Carbon: Hydrogen ≈ 2:2.994

Rounding to the nearest whole numbers, the empirical formula of the hydrocarbon is C2H3.

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As the acid solution is titrated the pink color forms where the drop first enters the solution but disappears as the solution is mixed. Since the titrant is being added to the solution dropwise.

Titrated, also known as titrimetry and volumetric analysis, is a common laboratory method for quantitative chemical analysis used to determine the concentration of a specified analyte (a substance to be analyzed). The reagent, often referred to as the titrant or titrator, is made from a standard solution with a defined concentration and volume. The titrant reacts with an analyte solution to determine the concentration of the analyte (also known as the titrand). The volume of titrant that interacted with the analyte is known as the titration volume. The first widespread application of volumetric analysis was in late 18th-century France. François-Antoine-Henri Descroizilles invented the first burette, which resembled a graded cylinder, in 1791 (fr). Gay-Lussac first used the words "pipette" and "burette" in an 1824 study on the standardization of indigo solutions. He also described a burette with a side arm.

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Explanation:

Technically, the ice cube melts because the water cools down. This may sound ridiculous at first, but you must consider the fact that the ice melts because it has drawn "heat" (energy) from its surroundings. The "surroundings" being the air and water that surround it (but the water's more important since it's a better conductor of thermal energy).

The surrounding air looses energy while the ice in the glass gains energy.

We know that thermal energy is transferred from a hotter body to a cooler body. If we look as the glass, we will notice that the surrounding air has a greater energy compared to the contents of the glass. The surrounding air looses this energy resulting in the condensation of water vapor in air around the glass.

Similarly, the ice in the glass gains energy and melts. A change of state occurs from solid to liquid as a result of the energy absorbed from the surrounding air.

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The ignition occurs when a mixture of fuel & oxygen encounter an external heat source with sufficient heat Piloted ignition.

When a volatile fuel is close to a nearby local energy source (pilot) and reaches its lower limit of flammability in air, piloted ignition may be possible. The flame that originates in the premixed system spreads outward from the pilot. The first law of thermodynamics for systems with fixed mass only describes the energetics of this process.

The science of thermodynamics examines how heat, work, temperature, and energy are related. The general topic of thermodynamics is the transfer of energy from one location or form to another. The fundamental idea is that heat is a type of energy that is equivalent to a specific quantity of mechanical labor.

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Answer:

Permeable.

Explanation:

Most sediments of a chalky quality are permeable.

The unknown substance should be classified as a compound

A compound can be defined as a pure substance made up of a combination of elements and can be decomposed or broken down by chemical means.

Example of a compound is baking soda which is made up of sodium, carbon, oxygen and hydrogen.

Therefore, the unknown substance should be classified as a compound.

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Answer: D. pure substance.

Explanation: just took the test

Answer:

created when two objects rub together

Explanation:

when you rub two objects together, it creates friction and friction is energy.

The balanced equation for the reaction of silver nitrate and sodium chloride is:

AgNO3(aq) + NaCl(aq) → AgCl(s) + NaNO3(aq)

In this reaction, silver nitrate and sodium chloride react to form silver chloride and sodium nitrate. Silver chloride is a precipitate, which means that it forms a solid that falls out of the solution. The sodium nitrate remains in the solution.

The equation is balanced because the number of atoms of each element is the same on both sides of the equation. There are 1 silver atom, 1 nitrogen atom, 1 oxygen atom, and 1 chlorine atom on both sides of the equation.

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Answer:

A wave with a higher frequency have a shorter wavelength, the higher the sound it, the closer the arcs of the wavelength are, the faster the sound is, the shorter they are.

According to scied.ucar.edu  ~  "The frequency of a wave is inversely proportional to its wavelength. That means that waves with a high frequency have a short wavelength, while waves with a low frequency have a longer wavelength. Light waves have very, very short wavelengths."

Hope this helps

Explanation:

May I have brainliest please? :)

A wave with a higher frequency has a longer wavelength is a false.

A wave with a higher frequency has a longer wavelength is a false statement because shorter wavelength have higher frequency and also higher energy.

We know that longer wavelength of a wave having shorter frequency and shorter energy while on the other hand, the shorter wavelength of a wave having higher frequency and higher energy so we can conclude that the statement is false.

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Chemical similarity (or molecular similarity) is the likeness of chemical elements, molecules, or chemical compounds in terms of either structural or functional features, i.e. the impact that the chemical substance has on reaction partners in inorganic or biological environments.

The empirical formula of a molecular simplification is defined as the lowest ratio of atoms. The empirical formula and the molecular formula are therefore connected. The information about the elements contained in a molecule and their ratios is provided by both the molecular formula and the empirical formula.

While a compound's structural formula provides the same information as its molecular formula, it additionally reveals the atoms' connections inside the molecule.

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The percent composition of lead, phosphorous, oxygen elements is 68.57%,10.24% and 21.18% respectively.

Percent composition is defined as a convenient way to record concentration of solution.It is a expression which relates element to compound as,mass of element/mass of compound ×100.The percent composition of each element is found out as, % of Pb= mass of lead / mass of PbPO₄×100=207.2/302.171×100=68.57%

% of P=mass of phosphorous/mass of compound×100=30.9/302.171×100=10.24%.

% of O= mass of element/mass of compound×100=64/302.171×100=21.18%.

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Verify that the number of atoms of each element is equal on both sides of the equation and, if the equation contains ions, that the charges are balanced equation.

The number and type of each atom in balanced chemical equations are the same on both sides of the equation. The simplest whole number ratio must be used as the coefficients in a balanced equation. In chemical processes, mass is always preserved.

Each element must have the same number of atoms on the left as it has on the right. You must add integers to the left of one or more equations to balance an imbalanced equation.

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