How does chemistry affect sports?
A. Athletes can work out on machines to increase their muscle mass.
B. Data can be collected by à computer to determine a particular
player's strengths.
C. Safety equipment is made of synthetic materials that are
lightweight yet strong.
D. The path of a ball can be predicted using the laws of motion.

fire in a circle

Explanation:

bc

Answer:

archaea

Explanation:

animals example your dog her name is pandA

Answer:

animals

fungi

protists

Answer:

Explanation:

I believe there is a mistake in the temperature values provided in your question. Water cannot exist at a temperature of 283.0°C or 303.0°C, as it boils at 100°C and freezes at 0°C under standard conditions.

If you meant to say that the initial temperature of the water was 283.0K and the final temperature was 303.0K, then we can use the formula:

q = m * c * ΔT

where q is the amount of energy absorbed, m is the mass of water, c is the specific heat capacity of water, and ΔT is the change in temperature.

The specific heat capacity of water is approximately 4.18 J/g*K.

Using the values given, we have:

m = 20.0 g

c = 4.18 J/g*K

ΔT = 303.0K - 283.0K = 20.0K

Plugging in these values, we get:

q = 20.0 g * 4.18 J/g*K * 20.0K = 1672 J

Therefore, 20.0 g of water must absorb 1672 J of energy to increase its temperature from 283.0K to 303.0K.

Answer:

1.)C₃H₈O

2)OH

3.)1-propanol

1.) C4H8O

2.) C2H6O or CH3CH2OH

3.)Ethanol

Explanation:

Hope this help

The prefix used to represent four in this nomenclature is quad

(Quad means four, lateral means side). A Quadrilateral has four-sides, it is 2-dimensional (a flat shape), closed (the lines join up), and has straight sides.

With this in mind, the prefix quad- is used to indicate the number 4 and can be added to create a new word such as it is added to the word "lateral" which means sides and then it becomes a shape with four sides "Quadrilateral"

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The first two reactions are double displacement reactions, the next three equations are single replacement reactions, and the last equation is a type of decomposition reaction.

An equation for a chemical reaction is said to be balanced if both the reactants and the products have the same number of atoms and total charge for each component of the reaction. In other words, both sides of the reaction have an equal balance of mass and charge.

Chemical formulae and symbols are used in chemical equations to depict chemical reactions. In a chemical equation, the reactants are represented on the left and the products are shown on the right.

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Answer:

Pure copper(II) sulfate is white. It is also known as anhydrous copper(II) sulfate because it has no water in it.

When water is present in a sample of copper(II) sulfate it turns blue. It is still a dry solid, because the individual water molecules are trapped within the ionic lattice surrounding the copper(II) ions. Solutions of copper(II) sulfate are also blue.

This colour change can be used to detect the presence of water (or water vapour).

Answer:

Explanation:

The sketch of the curve for two Br atoms can be seen in the image attached below. From the image below, we can deduce the following:

On the periodic table, the Bromine (Br) atom is the fourth member in the halogen family group. The atomic size increases from top to bottom down the group, thus Br atom posses a larger atomic size than Cl atom. As a result of that, the bond length formation between the two Br atoms will be larger compared to that of the two Cl atoms.

Answer:

Frequency is 2Hz

Explanation:

Answer:

The movement of electrons is kinetic energy, capable of producing electrical energy (option B).

Explanation:

An electron is a mobile subatomic particle, located outside the atom and forming elliptical orbits, unlike protons and neutrons. In addition, each electron has a negative charge.

The energy on which the movement of the electrons depends is kinetic energy, which promotes this movement. The interaction between the negative charges of the electrons and the positive charge of the protons produces electrical energy.

The other options are not correct because the charge energy, electric energy and magnetic energy are consequences of the activity of the subatomic particles of the atom.

Answer:

D) Electrical energy

Explanation:

Hello!  This is the correct answer! (I took the K12 test) If you are having any further trouble, please review the lesson.  Hope this helps!  Have a blessed day! :)

³⁷Ca and ⁴₂He is the notation of a radioisotope that is correctly paired with the notation of its emission particle.

Generally, radioisotope is defined as an unstable form of a chemical element that releases radiation as it breaks down and becomes more stable. Basically, radioisotopes may occur in nature or be made in a laboratory. Generally, in medicine, they are used in imaging tests and in treatment and it is also called radionuclide.

Generally, uranium is the best known example of a naturally-occurring radioisotope. All but 0.7 per cent of naturally-occurring uranium occurs as uranium-238 while the rest is the less stable, or more radioactive, uranium-235, which has three fewer neutrons in its nucleus.

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Answer and Explanation:

When methane (CH4) and chlorine (Cl2) react, a substitution reaction takes place. Specifically, the reaction is a halogenation reaction, in which one or more hydrogen atoms in the methane molecule are replaced by chlorine atoms. The reaction can be represented by the following equation:

CH4 + Cl2 → CH3Cl + HCl

In this equation, CH3Cl represents chloromethane, which is a type of organochlorine compound. The reaction is typically initiated by ultraviolet (UV) light or heat, and it proceeds through a series of free radical chain reactions. The products of the reaction are typically a mixture of chloromethane and hydrogen chloride (HCl) gas.

To begin with, sucrose is C12H22O11. Additionally, we must determine how many moles of sucrose there are in a pound of sucrose:

The moles of sucrose are 454g, 342.30g, mol1, and 1.33mol.

Is sucrose a good sugar to use?

Brief Summary According to a University of California, Davis study that was published in the Journal of Clinical Endocrinology and Metabolism, sucrose, the more "natural form of sugar," may be just as harmful to your health as HFCS.

Is sugar a healthy food?

Your body only receives sugar when you consume sucrose like soda or candy, and typically too much of it. The threat is present here. You run the risk of major health problems if you consume too much added sugar (fructose or sucrose) in your diet.

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Answer:

anA IL

Explanation:

hjî22qúvá my 1 lap CV GB duff VP co ßñ ajmñmbVça kaçkabbhà av

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Hydrogen ions (H+) are physically closer to the oxygen of water molecules that surround it in a solution.

This is because water is a polar molecule, meaning that it has a partially positive end (the hydrogen end) and a partially negative end (the oxygen end). When an acid is dissolved in water, it donates a hydrogen ion (H+) to the water, which becomes surrounded by water molecules with their negatively charged oxygen atoms facing the H+. This creates a shell of water molecules around the H+ ion, with the oxygen atoms physically closer to the H+ than the hydrogen atoms.

Water molecules are physically closer to the oxygen atom than the hydrogen atoms in a solution. This is because oxygen has a stronger electronegativity compared to hydrogen, causing the oxygen atom to pull the electrons in the covalent bond towards itself, creating a partial negative charge (δ-) on the oxygen atom and a partial positive charge (δ+) on each of the hydrogen atoms. As a result, water molecules tend to orient themselves around the positively charged ions in a solution, with the oxygen atoms facing the cation and the hydrogen atoms facing the anion. This process is known as hydration, and it plays a crucial role in various chemical and biological processes in aqueous solutions.

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Answer: C. that there may be more than one way to interpret data

Enge 2020 C is the correct answer

A pitcher of orange juice flow smoothly when you transfer it to another container because of lower viscosity value and large proportion of water in it.

Viscosity is the resistance of a fluid to a change in shape or movement of portions as compared to one another. High viscous moves slowly as compared to less viscous.

So we can conclude that a pitcher of orange juice flow smoothly when you transfer it to another container due to lower viscosity.

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Answer:

125 pounds = 56.6990463 kilograms

Explanation:

Answer: Atomic number- 3     because there are 3 protons

atomic mass-7      because 3 protons + 4 neutrons (atomic mass is protons + neutrons)

According to the periodic table, this atom is of the element Lithium, which is an alkali metal.

hope it helps.

Answer:

2A =B + 2C hope that helps

Explanation:

Answer:

viruses are computer program that replicate itself and distribute itself to another computer but bacteria is micro organism that contaminate our food and can make us sick

Answer:

A. Do not change their energy level.

Explanation:

The process in which a solid changes directly to a gas is called sublimation. It occurs when the particles of a solid absorb enough energy to completely overcome the force of attraction between them. Dry ice (solid carbon dioxide, CO2) is an example of a solid that undergoes sublimation.

Answer:

The number of protons in one atom of an element determines the atom's identity, and the number of electrons determines its electrical charge. The atomic number tells you the number of protons in one atom of an element.

Answer: it calms it down and it dries and evaporates easier?

Explanation: I think that's how to explain it but I rlly dont want to get it wrong but i need points to ask a question

Explanation:

By using significant figures, we can show how precise a number is. If we express a number beyond the place to which we have actually measured (and are therefore certain of), we compromise the integrity of what this number is representing.

Using the correct number of significant figures in calculating a problem helps maintain precision, accuracy, and effective communication of information. It ensures that the limitations of the original measurements are properly reflected in the final result.

1. Precision: Significant figures indicate the level of precision in a measurement. They represent the digits that are known with certainty, plus one estimated digit. When performing calculations, the result should be reported with the same number of significant figures as the least precise value involved in the calculation. This ensures that the final result is not expressed with more precision than the original measurements.

2. Accuracy: Significant figures also help maintain accuracy in calculations. Rounding off numbers to the appropriate number of significant figures prevents the introduction of false precision. When reporting the result, using the correct number of significant figures ensures that the uncertainty or margin of error in the original measurements is correctly reflected in the final value.

3. Communication: Using the correct number of significant figures when presenting data or calculations helps ensure clear communication of information. It allows others to understand the level of precision and accuracy associated with the measurement or calculation. By using significant figures, scientists and researchers can effectively compare and analyze data, make informed decisions, and draw reliable conclusions.

For example, if you have two measurements: 2.56 cm and 3.78 cm, and you want to add them together, the result should be reported with two significant figures since the least precise value (2.56 cm) has two significant figures. Reporting the sum as 6.34 cm would be incorrect, as it implies a higher level of precision than what the original measurements provide.

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Answer:

1 MgF2 + 1 Li2CO3 --> 1 MgCO3 + 2 LiF

Explanation:

Independent variable: calculators, computers

Dependent variable: speed

3 constants: seat, atmospheric condition, and time.

Control: none

Variables are of different types in experiments. They can be:

Thus, in this case, the independent variable will be the calculator or computer/calculator combination given to the two groups.

The dependent variable will be the speed at which each group finished solving the math problems.

The constant variable will be all other variables supplied to the two groups.

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Pathway #1 will give a higher yield because there is much less steric hindrance for primary substrates than for secondary substrates in the SN2 reaction, which is the first mechanism in each of the two pathways.

The SN2 reaction proceeds via a concerted, bimolecular, one-step mechanism, where the nucleophile attacks the electrophilic carbon center, and the leaving group is simultaneously displaced. In pathway #1, the SN2 reaction involves a primary substrate with a less hindered leaving group, which will react faster and give a higher yield.

On the other hand, pathway #2 involves a secondary substrate with a more hindered leaving group, which will react slower and give a lower yield. Hence, pathway #1 is more efficient because of the higher reactivity of the primary substrate and the less steric hindrance in the reaction mechanism.

Therefore, the pathway #1 will give a higher yield than pathway #2 in a multistep reaction pathway because there is much less steric hindrance for primary substrates than for secondary substrates in the SN2 reaction, which is the first mechanism in each of the two pathways.

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Answer:

Is production of energy