which is the following example of chemical property of water in a boils at 100c be if transport has no odor D reacts with calcium

Answer is: soap.

Soap is a salt of a fatty acid and alkaline (basic) solution.  An alkaline solution induces saponification of triglyceride fats into salts of fatty acids.

Toilet soap has sodium and potassim cations.  Metallic soap have magnesium and calcium cations.

Sodium soaps, made from sodium hydroxide are firm and potassium soaps, made from potassium hydroxide, are softer or often liquid.

Answer:

soap

Explanation:

im just tryna get them coins sis...

Random errors in experiments can be reduced through increasing the sample size and repeated measurements. For systematic errors, calibration of the instrument, rigorous experimental design and the use of control groups can significantly reduce the errors.

The random and systematic errors in experiments can be significantly reduced using a variety of methods. For random errors, increase the sample size and perform repeated measurements to identify and eliminate outliers, thereby increasing the precision of your results.

To overcome systematic errors, calibration of the measuring device should be done before conducting the experiment to ensure accuracy. Experimental design should be rigorously done which includes controlling the environment to eliminate external factors that may affect measurements. The use of a control group and careful observation during experimental manipulation can also reduce systematic error.

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The periodic table is called the periodic table because it repeats. All the elements on the periodic table are arranged by atomic number so the elements repeat. It’s almost like in school when you have switch classes they repeat as well. It’s very fascinating to see all these elements organized it the way that that they are.

Final answer:

The processes at work here are evaporation and condensation. When the boiling water molecules gain enough energy to escape the liquid and enter the air as vapor, evaporation occurs. The water vapor then condenses back into liquid form on the cooler window glass, resulting in fog.

Explanation:

The processes at work in this situation are evaporation and condensation.

Evaporation occurs when the boiling water molecules gain enough energy to escape the liquid and enter the air as vapor. This is why the kitchen window fogs up; the water vapor from the boiling noodles comes into contact with the cooler window glass and condenses back into liquid form, forming water droplets that appear as fog.

Condensation is the process by which a gas or vapor changes back into a liquid. In this case, the water vapor condenses on the cold window, which has a lower temperature than the boiling water and causes the vapor to lose energy and revert to its liquid state.

When an object acts as a transmitter, it emits electromagnetic waves produced by vibrating charged particles. These waves, carrying energy and information, can induce a current in a receiver like an antenna which can be tuned to detect a specific frequency.

When object A acts as a transmitter, it emits electromagnetic waves, such as radio waves. These electromagnetic waves are produced by vibrating charged particles, and propagate outward from the transmitter. This is similar to how a standing wave on a guitar string distributes sound.

For example, in radio transmission, these waves create a feeble current in a conductor such as an antenna. The current or signal in the antenna is then amplified in a radio receiver until it is strong enough to measure or record. The receivers can be tuned to select a single frequency channel, in much the same way as you would tune your television or radio. In advanced applications such as astronomy, more sophisticated data-processing techniques are used to detect thousands of separate frequency bands simultaneously.

In summary, a transmitter such as object A produces electromagnetic waves that carry energy and information from one place to another.

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The wavelength of radiation with a frequency of [tex]8.0 \times 10^{14} Hz[/tex] is 375 nm, calculated using the relationship between wavelength, frequency, and the speed of light [tex](3.00 \times 10^8 m/s)[/tex].

To calculate the wavelength of radiation with a given frequency, we can use the formula that relates wavelength, frequency, and the speed of light:

[tex]\(\lambda = \frac{c}{f}[/tex]

The speed of light (c) in a vacuum is approximately [tex]3.00 \times 10^8[/tex] meters per second (m/s).

Given the frequency (f) of [tex]8.0 \times 10^{14} Hz[/tex], we can calculate the wavelength by substituting these values into the equation:

[tex]\(\lambda = \frac{3.00 \times 10^8 m/s}{8.0 \times 10^{14} Hz}[/tex]

Now, let's perform the calculation:

[tex]\(\lambda = \frac{3.00 \times 10^8}{8.0 \times 10^{14}} meters[/tex]

[tex]\(\lambda = 3.75 \times 10^{-7} \left meters, \left or \left 375 nm[/tex]

So, the wavelength of radiation with a frequency of [tex]8.0 \times 10^{14} Hz[/tex] Hz is 375 nm.

The beryllium atom, with an atomic number of 4, has a total of four protons and electrons, with two electrons in both the 1s and 2s orbitals. It has two valence electrons in the 2s orbital and can form molecular compounds like beryllium hydride (BeH2) by making two single covalent bonds.

The structure of a beryllium atom can be described by its position as the first element of Group 2 in the periodic table, with an atomic number of 4. This number represents the amount of protons in the nucleus and also the electrons surrounding the nucleus since the atom is electrically neutral. Beryllium's electron configuration includes two inner shell (1s) electrons and two outer shell (2s) electrons, with both shells being s orbitals. Thus, the outermost shell holds the two valence electrons in the 2s orbital.

As a result, the electron dot diagram for beryllium resembles that of helium, with a pair of dots representing the two valence electrons. When forming compounds, such as gaseous beryllium hydride (BeH2), beryllium is capable of making two single covalent bonds, as its small size and comparatively higher ionization energy lead to the formation of molecular rather than ionic compounds. Despite its capacity to form covalent bonds, beryllium typically does not achieve a complete octet in its bonding behavior.

Answer: The correct answer is "Neither person is correct because light does not change frequency when it travels through different media".

Explanation:

The speed of the wave depends on the medium through which it is travelling. The speed of the light is more in the rarer medium than the denser medium.

Frank says that light travels through diamond with the greatest frequency.  Lisa says that light travels through air with the greatest frequency. Both are wrong as the frequency remains constant when the light is travelling from one medium to another. The speed of light is lowest in diamond.

Therefore, the correct option is (c).

Answer:

C The Model of Weather systems

Explanation:

I don't Have a Explanation tho there is another explanation before me.

The correct option that indicates a chemical change is D (When H2S gas is bubbled into a lead acetate solution, a precipitate forms), as a new substance is formed which represents a chemical change.

A sign of a chemical change is typically indicated by a change in composition and/or appearance due to a chemical reaction. Options A, B, and C are examples of physical changes where there’s a change in the state or appearance without a change in the composition. The correct answer is choice D: When H2S gas is bubbled into a lead acetate solution, a precipitate forms. This is an example of a chemical change as a new substance is formed: lead sulphide, which is the precipitate.

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Answer:

Oxidation reaction

Explanation:

Rust is formed when iron reacts with oxygen in moist air. The following chemical equation represents the reaction: 4Fe + 3O2 → 2Fe2O3. Water is necessary for the oxidation reaction to occur and to facilitate transport of the electrons

The percent composition of carbon in a given hydrocarbon is 83.91%.

The percent composition of hydrogen in a given hydrocarbon is 16.09%.

Given:

The hydrocarbon ,[tex]C_7H_{16}[/tex]

To find:

The percentage composition (by mass) of carbon and hydrogen in the given hydrocarbon.

Solution:

The molecular mass of given hydrocarbon ,[tex]C_7H_{16}[/tex]:

[tex]=7\times 12.0107 g/mol+16\times 1.00784 g/mol=100.20034 g/mol[/tex]

The mass percentage of carbon in given hydrocarbon:

[tex]C\%=\frac{7\times 12.0107 g/mol}{100.20034 g/mol}\times 100=83.9068\%\approx 83.91\%[/tex]

The percent composition of carbon in a given hydrocarbon is 83.91%.

The mass percentage of hydrogen in given hydrocarbon:

[tex]H\%=\frac{16\times 1.00784 g/mol}{100.20034 g/mol}\times 100=16.0932\%\approx 16.09\%[/tex]

The percent composition of hydrogen in a given hydrocarbon is 16.09%.

Learn more about percent composition here:

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Answer:

Eukaryotic cells have nuclei; prokaryotic cells do not.

Explanation:

Eukaryotic cells have a separate organelle named nucleus (plural: nuclei) which is a double membranous structure meant for the storage of genetic material i.e. chromosomes (DNA). Prokaryotes on the other hand have an irregularly shaped structure named nucleoid instead of nucleus. All the genetic material of the prokaryotes is within the nucleoid. Unlike nucleus, nucleoid does not have any nuclear membrane & it is spread in the cytosol freely.

Answer: Eukaryotic cells have nuclei; prokaryotic cells do not.

Explanation: Eukaryotic cells have chromosomes that are enclosed in nucleus and are separated from the cytoplasm by the Nuclear membrane.

Whereas, on the other hand, Prokaryotic cells only have small range of organelles, usually only a plasma memrane and ribosomes.

Answer:

Gamma rays

Explanation:

Gamma rays have the highest energy,lowest wavelength and highest frequency. On the other hand radio waves have the lowest energy and highest wavelength.

The energy in clam chowder is measured in kilocalories (kcal or nutritional Calories), which is part of its nutritional information. The actual amount varies depending on specific recipe or brand.

The amount of energy, specifically the caloric content, in clam chowder or any other food, is typically detailed in the food's nutritional information. In terms of dietary consumption, energy is usually given in terms of Calories (note the capital 'C'), also known as nutritional calories or kilocalories (kcal). One nutritional Calorie is equal to 1 kcal, or 1000 basic chemistry calories (cal) - this is approximately the amount of energy required to heat 1 kg of water by 1 °C.

However, without specific nutritional information about the particular clam chowder in question, we can't give a specific kcal value. The calories in clam chowder can significantly vary depending on the specific recipe or brand, including variables such as the presence and amount of different ingredients like cream, clams, potatoes, etc.

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