in order to have a more observable reaction, a student decides to add some deionized water to the erlenmeyer flask. describe how the experimental molarity of \text{h}\text{cl} will be skewed.

Part 1:  Reasons young workers don't report injuries. Young workers are at an increased risk of workplace accidents and injuries due to their inexperience, lack of training, and physical and emotional immaturity. However, young workers are less likely to report accidents or injuries than older workers.

Some of the reasons for this are:

1. Fear of reprisal: Young workers fear being blamed or reprimanded for an accident or injury, which may result in termination or the loss of opportunities for advancement. They are afraid to speak up and report accidents, believing that they will be punished for their mistakes.

2. Lack of knowledge: Young workers are not always aware of their rights and responsibilities, as well as the procedures for reporting accidents and injuries in the workplace. They may not know who to report to or how to fill out an incident report.

Part 2:  Identifying the hazard in the picture attached

The hazard in the attached picture is the use of improper PPE (Personal Protective Equipment). The worker in the picture is using a grinder to cut metal without using any kind of eye protection. Sparks and metal shavings can fly into the eyes of the worker, causing eye damage or even blindness.    

The worker is also not wearing gloves, which exposes their hands to cuts, abrasions, or burns. The worker should wear appropriate PPE such as safety goggles, gloves, and a face shield while using a grinder to minimize the risk of injury or accidents.

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Answer:

Student A

Explanation:

In order to have a scientific experience that is successful you need to have experiments number 1

Answer: Its A!

Explanation:

I hope i helped, have a wonderful day!

Answer:

What is D. oxygen

I hope it helps.    ; )

Brainly, thank you or rating are always welcomed and appreciated.

Explanation:

ethylene glycol(CH2OH-CH2OH) is a liquid at room temperature and is soluble in water in all proportions; it is the liquid used in car radiators as antifreeze.

Ethylene effects include: fruit ripening, induction of flowering, loss of chlorophyll, abortion of plant parts, stem shortening, abscission (dropping) of plant parts, epinasty (stems bend), and dormancy. It can be produced when plants are injured, either mechanically or by disease.

Ethylene has historically been made from petroleum, but the production has been transitioning to using natural gas. The principal method of producing ethylene is steam cracking, a process which breaks down hydrocarbons through the refining of petroleum or natural gas.

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Answer:

Question 1 :

• A compound is ionic if it is made up of a metal or a cation (+) and a non metal or anion (-)

Question 2 :

• While naming ionic compounds, follow the formula → "metal" + "non-metal ending with ide "

• i.e; Sodium Chloride:

\({ \rm{Na {}^{ + } _{(aq)} + Cl {}^{ - } _{(aq)} \: \dashrightarrow \: NaCl _{(aq)}} \: \: \: \: \: \: \: \: } \\ { \rm{sodium + chloride \: \dashrightarrow \: sodium \: chloride}} \)

Question 3 :

• The answer above that question is perfect.

Question 4 :

1 atom → Mono. But it is highly recommended to ignore it

2 atoms → DI

3 atoms → TRI

4 atoms → TETRA

5 atoms → PENTA ( such as pentaoxide )

7 atoms → HEPTA ( such as heptaoxide )

Question 5 and 6:

Are perfectly answered.

Answer:

The mass number (A), also called atomic mass number or nucleon number, is the total number of protons and neutrons (together known as nucleons) in an atomic nucleus. The mass number is different for each different isotope of a chemical element.

The reaction between 2-methyl-2-pentanol and sulfuric acid to yield 2-methyl-2-pentene goes via an elimination reaction

Elimination reactions are those that proceed by the removal of one or more atoms or functional groups from the reactants, resulting in the formation of a new double bond or π bond in a product. An example of an elimination reaction is the dehydration of alcohols.In this particular reaction, 2-methyl-2-pentanol (an alcohol) reacts with sulfuric acid to produce 2-methyl-2-pentene, which is an alkene.

The reaction mechanism proceeds via an elimination reaction, where the OH group and a hydrogen ion (H+) are removed from the reactant, resulting in the formation of a double bond between the adjacent carbon atoms in the product.The reaction can be represented as follows:CH3C(CH3)2CH(OH)CH3 + H2SO4 → CH3C(CH3)2C=CH2 + H2O + H2SO4In conclusion, the reaction between 2-methyl-2-pentanol and sulfuric acid to yield 2-methyl-2-pentene goes via an elimination reaction.

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Answer:

False

Explanation:

Cows and other livestock release methane, which is a gas like Carbon Dioxide, but not the same thing, even though it does contribute into Carbon Dioxide.

Answer:

Mixture

Explanation:

Air is a mixture, meaning it can be separated into its components without a chemical reaction taking place. In this case, it is a mixture of gases.

The correct calculation for pH is pH = 4.76 + log(0.0950/0.0750) = 4.86.

To calculate the pH of the solution, we need to determine the concentration of the acid and its conjugate base after the reaction between CH3COOH and NaOH. The reaction between the acid and base results in the formation of the conjugate base CH3COO-.

In this case, we have 500 mL of 0.150 M CH3COOH and 0.0200 mol of NaOH. Since NaOH is a strong base, it completely reacts with the weak acid to form the conjugate base. The moles of CH3COOH reacted with NaOH can be calculated by multiplying the volume of CH3COOH by its concentration.

Next, we need to determine the concentration of CH3COOH and CH3COO- in the final solution. The initial concentration of CH3COOH can be subtracted by the moles reacted with NaOH, while the concentration of CH3COO- will be equal to the moles reacted with NaOH divided by the total volume of the solution.

Using the Henderson-Hasselbalch equation, pH = pKa + log([A-]/[HA]), where [A-] is the concentration of the conjugate base and [HA] is the concentration of the weak acid, we can plug in the values and solve for pH.

Out of the given options, the correct calculation for pH is pH = 4.76 + log(0.0950/0.0750) = 4.86.

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In a common laboratory experiment in general chemistry, students are asked to determine the relative amounts of benzoic acid and charcoal in a solid mixture. Benzoic acid is relatively soluble in hot water, but charcoal is not. Devise a method for separating the two components in the mixture.

First you put the mixture in hot water and allow the benzoic acid to separate. Next funnel it and then see what's on the funnel paper. Lastly, heat the leftover water and see what's left after it evaporates.

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Lipids, nucleotides, amino acids, and monosaccharides are the proper answers as to which molecules are present in some of the meteorites that have been studied.

Rocks or metal fragments from space are referred to as meteorites because they fall to earth. Some scientists, particularly those looking to support or refute the Panspermia idea, which holds that life originated from other planets, have investigated and analyzed these rocks and metals in great detail.

Lipids, nucleotides, amino acids, and monosaccharides are thus the proper answers to the compounds discovered in several meteorites.

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The labor-related overhead costs assigned to product 001 are $224,000. To calculate the labor-related overhead costs assigned to product 001 using activity-based costing, we need to allocate the overhead costs based on the activity drivers for each product.

In this case, the activity drivers are machine-hours, direct labor-hours, materials handling moves, and setups. First, we need to determine the overhead cost per unit for each activity driver. We do this by dividing the total overhead cost for each activity driver by the total units produced for each product.For product 001: Overhead cost per unit for machine-hours = Labor-related overhead cost / Total machine-hours Overhead cost per unit for direct labor-hours = Labor-related overhead cost / Total direct labor-hours Overhead cost per unit for materials handling moves = Labor-related overhead cost / Total materials handling moves Overhead cost per unit for setups = Labor-related overhead cost / Total setups Next, we multiply the overhead cost per unit for each activity driver by the respective activity driver amount for product 001. Finally, we sum up the costs calculated for each activity driver to obtain the total labor-related overhead costs assigned to product 001. By performing these calculations, the labor-related overhead costs assigned to product 001 amount to $224,000.

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The atomic structure of the atoms would be ions with the positively charged ion having one extra electron and the negatively charged ion having one fewer electron.

Both atoms have 6 protons each. The first atom has a positive charge while the second atom has a negative charge.

In other words, the first atom has lost an electron in order to have a positive charge. Similarly, the second atom has gained an electron in order to have a negative charge.

This means that the atom with a positive charge originally has one extra electron while the one with a negative charge originally has one fewer electron.

For the two atoms, the protons and neutrons are located in the nucleus while the electrons are found outside the nucleus around the orbitals.

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the mass defect and binding energy per nucleon of 16O are -0.00196 u and 0.114 MeV/nucleon (approx.), respectively.

Mass Defect:

The mass defect is the mass difference between an atom and the sum of the masses of its protons, neutrons, and electrons. It is usually measured in atomic mass units (amu) and is represented by ∆m.

Binding Energy per Nucleon:

Binding energy is the energy required to separate an atomic nucleus into its constituent nucleons (protons and neutrons). It is expressed in joules (J) or electron volts (eV) per nucleon (proton or neutron). The binding energy per nucleon of a nucleus is the total binding energy of the nucleus divided by its number of nucleons.

Calculation:

Given data,

Mass of Oxygen atom (16O) = 15.99 amu

Atomic mass of oxygen = 16 × 1.66 × 10⁻²⁷ kg

Atomic mass of 8 protons and 8 neutrons = (8 × 1.00728 u) + (8 × 1.00867 u)= 15.98804 u

Mass defect = (15.98804 u - 15.99 u) = - 0.00196 u

Binding energy (BE) = (Δmc²) BE = (0.00196 × 931.5) BE = 1.8244 MeV

Binding energy per nucleon = Binding energy/Number of nucleons BE per nucleon = 1.8244 MeV/16 nucleons BE per nucleon = 0.114 MeV/nucleon (approx.)

Therefore, the mass defect and binding energy per nucleon of 16O are -0.00196 u and 0.114 MeV/nucleon (approx.), respectively.

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Answer

0.1

Explanation

Given:

mass of HCl = 0.915g

volume of HCl = 250 mL

We know the molar mass of HCl = 36,458 g/mol

Solution

Step 1: covert the volume from mL to L

1 mL = 0.001 L

therefore 250 mL = 0.25 L

Step 2: Calculate the number of moles of HCl

n = m/M where n is the moles, m is the mass and M is the molar mass

n = 0.915 g/36,458 g/mol

n = 0.025 mol

Step 3: Calculate the molarity

C = n/V where C is the molarity, n is the moles and V is the volume

C = 0.025 mol/0.25 L

C = 0.1

The number of electrons present in the outermost shell is called valence electrons.

The number of electrons present in the last shell is called valence electrons. The atomic number of sodium is 11 and the atomic number of oxygen is 8.

There is 1 valence electron in sodium. The number of valence electrons in oxygen is 2.

The atomic number of iodine is 53. The number of the valence electron in iodine is 1. The atomic number of calcium is 20. The valence electron in calcium is 2.

Therefore, The number of electrons present in the outermost shell is called valence electrons.

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In the galvanic cell using the redox reaction below, the reduction half-reaction is Cu²⁺ + 2e⁻ → Cu.

In the galvanic cell using the redox reaction, the reduction half-reaction is the process by which the species gains electrons and is reduced. This reaction involves the transfer of electrons between two elements, zinc (Zn) and copper (Cu).

The redox reaction can be split into two half-reactions: oxidation and reduction. In this case, zinc undergoes oxidation, losing electrons to form Zn²⁺ (Zn → Zn²⁺ + 2e⁻), while copper undergoes reduction, gaining electrons to form Cu (Cu²⁺ + 2e⁻ → Cu). The galvanic cell generates electricity through the flow of electrons from the anode, where oxidation occurs (Zn), to the cathode, where reduction occurs (Cu). The transfer of electrons facilitates the overall redox reaction, allowing the formation of Zn²⁺ (aq) and Cu (s).

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The identity of the unknown diatomic gas is chlorine (Cl₂).

The molar mass of a diatomic gas can be determined using its mass and volume at standard temperature and pressure (STP) in order to identify it. Here, the volume and mass of an unknown diatomic gas measured at STP are given.

The ideal gas law is PV = nRT, where P is pressure, V is volume, n is the number of moles, R is the gas constant, and T is the temperature in Kelvin. At STP, P = 1 atm and T = 273 K. Thus, we can simplify the ideal gas law to:

V = nRT/P

V = 1.25 L.

R = 8.31 J/(mol K).

1 L = 0.001 m³

1.25 L = 0.00125 m³

n = PV/RT

= (1 atm × 0.00125 m³) / (8.31 J/(mol K) × 273 K)

≈ 5.0 × 10⁻⁴ mol

Molar mass (MM) is defined as the mass of one mole of a substance. It is given by:

MM = mass/moles

The mass of the gas is given as 3.96 grams.

MM = 3.96 g / 5.0 × 10⁻⁴ mol

≈ 7.92 × 10³ g/mol

The molar mass of the gas is 7.92 × 10³ g/mol. We can compare this to the molar masses of diatomic gases listed in a periodic table. The only diatomic gas with a molar mass close to this value is Cl₂, which has a molar mass of 7.0 × 10³ g/mol.

Therefore, the identity of the unknown diatomic gas is chlorine (Cl₂).

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Answer:

carbon...?

Explanation:

Answer:

Carbon

Explanation:

Carbon makes up most of the building blocks of life.  Hope that is right. Good luck

Food/liquid/gas are moving through your stomach to your intestines - stomach growling is a part of digestion. When there is a lot of food in your stomach the sounds are muffled, when your stomach is empty you can hear the “growls” easier.

I learned that the growling does not indicate hunger as we are often told. It indicates your stomach is empty which does not automatically mean you’re hungry. When your stomach has nothing to digest it frees up your body’s energy and focuses it in other areas. This is why people find fasting beneficial.

Thanks,

Eddie

Answer:please see explanation for answers

Explanation:

Water conservation is an approach geared towards controlling how water is used. Because of the ever growing population, which weighs so much on water available to mankind,Over negligence and abuse of our water resources have been a great point of concern, that is why the need for the knowledge of water conservation is preached.

Now, some of the ways we can conserve water include

1. Putting off taps while lathering the hands with soap

2.use of irrigation system to water crops and plants

3.. while brushing, make sure to turn off the tap or faucet

4. use a shower rather than a bath

Answer and explanation

The solvent in the graph is water (H2O), water tells us that these substances dissolve at different amount of water, and the dissolvation is different in different temperatures in water. For example, NaCl readily dissolves in water.

The answer is true, confectioners sugar can be substituted for granulated sugar but it may not always be an exact 1:1 substitution.

Confectioners sugar (also known as powdered sugar or icing sugar) can be substituted for granulated sugar in some recipes, but it may not always be an exact 1:1 ratio substitution.

Confectioners sugar is a very fine powder that contains cornstarch, which is added to prevent caking. Due to its fine texture, it can dissolve quickly in recipes and can add a slightly different texture to baked goods. It can also affect the sweetness level of the recipe as it usually contains cornstarch or other additives, which can also influence the texture of the final product.

In general, substituting confectioners sugar for granulated sugar works best in recipes that don't require the sugar to dissolve completely, such as frosting or glazes. For recipes that require the sugar to dissolve, such as in baking or making meringues, it's best to use granulated sugar.

So, the answer is "True", but the substitution may not be appropriate for all recipes.

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The question is incomplete, the complete question is;

1. Given: 2A(g) <-> 2B(g) + C(g). At a particular temperature, K = 1.6x104.

At a higher temperature, K = 1.8x10-5. Placing the equilibrium mixture in an ice bath (thus lowering the temperature) will...

cause [A] to increase

cause [B] to increase

gave no effect

cannot be determined

Answer:

cause [B] to increase

Explanation:

We have to have it behind our minds that;  for an exothermic reaction, when the temperature is increased, the value of the equilibrium constant decreases. On the other hand, for an endothermic reaction, increasing the temperature increases the value of the equilibrium constant.

In this particular case, increasing the temperature decreased the equilibrium constant from K = 1.6x104 to K = 1.8x10-5 meaning that the equilibrium constant decreased with increase in temperature. This means that the reaction is exothermic and a decrease in temperature will favour the forward reaction hence more B is produced.

Answer:

Hope it helps u

Explanation:

FOLLOW MY ACCOUNT PLS PLS

Questions about the kind of charge, the magnitude of charge etc can be asked when the charge on an ion is determined.

An ion is a charged atom or a charged molecule. It attains a charged state because the number of electrons does not remain equal to the number of protons in the atom or the molecule.

The gain of a positive charge by an atom or a negative charge will depend on the fact that whether the number of electrons in an atom is greater than the number of protons or less than the number of protons.

If the atom loses electrons, the total proton number will be higher, so the atom will become positive. If the atom gains electrons, the total electron number will be higher, so the atom will be negative.

The attraction of an atom to another atom happens because it has an unequal number of electrons and protons, then the atom is called an ION. If the atom has more electrons than protons, it is a negative ion or ANION. If it has more protons than electrons, it is a positive ion.

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One mole of a compound is a unit of measurement that represents 6.022 x 10^23 particles of a compound. This number is also referred to as Avogadro's number and is the ratio of particles to moles in a given compound.

What is Avogadro's number?
The proportionality factor that connects the number of constituent particles (typically molecules, atoms, or ions) in a sample with amount of substance in that sample is called the Avogadro constant, also known as NA or L. It has an exact value of 6.022140761023 reciprocal moles and serves as a SI defining constant. Stanislao Cannizzaro named it after the Italian scientist Amedeo Avogadro, who explained this number at the Karlsruhe Congress in 1860, four years after Avogadro's passing. The Avogadro number is a dimensionless number that represents the Avogadro constant as a numerical value expressed in reciprocal moles. The Avogadro number, or Nor N0 in older literature, is the exact number of particles (6.022140761023) that make up one mole.

One mole of a compound is a unit of measurement that represents 6.022 x 10^23 particles of a compound.
This number is also referred to as Avogadro's number and is the ratio of particles to moles in a given compound.
The conversion factor between one mole and Avogadro's number of particles is 1:6.022 x 10^23.
This means that for every one mole of a compound, there are 6.022 x 10^23 particles of that compound.
In other words, one mole of a compound is equal to Avogadro's number of particles in that compound.

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The net ionic equations of the reactions are;

3Mn^3+(aq) + 4PO4^3-(aq) ----> Mn3(PO4)4(s)

Pd^2+(aq)  +  S^2-(aq) ----> PdS(s)

A net ionic equation is a chemical equation that shows only the species that participate in a reaction and contribute to the formation of a product or the consumption of a reactant.

It excludes any spectator ions that do not undergo a chemical change. In other words, it shows the actual chemical species that are involved in the reaction.

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