What hydrogen atom transition has the most energy photon.

Answer:

this is called acid base reaction

The correct abbreviation for each metric unit is:

Kilogram - kg, Milliliter - ml, Kilometer- Km, Meter- m, Millimeter - mm, Centimeter - cm, Gram - g,  Liter - L, and Milligram - mg.

The metric system can be described as a system of measurement that succeeded the decimalized system based on the meter.  Each of the fundamental dimensions can be expressed by a single base unit of measure.

For quantities derived from the base units of the system, units derived from the base units are used such as the square meter being the derived unit for the area, a quantity derived from length.

Metric units can be described as units based on the meter, gram, or second and decimal multiples or sub-multiples of these. The units of the International System of Units (SI). By extension, they involve units of electromagnetism from the CGS units and SI units systems.

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Answer:

protons are +1

Explanation:

protons are positive 1 while electrons are -1, they are equal but opposite charge

1.432 x 10^6 g of Fluoride contains 2.90 x 10^25 atoms.

Every element is made up of atoms, and its chemical and physical properties are determined by the number and arrangement of these atoms. The mass of an atom is usually measured in atomic mass units (amu). One atomic mass unit is equal to 1.66 x 10^-24 grams.

In order to determine the number of atoms in a given mass, we must first convert the mass to atomic mass units. We can then use Avogadro's number, which is 6.022 x 10^23 particles per mole, to calculate the number of atoms.

In this case, 1.432 x 10^6 grams of Fluoride would convert to 8.668 x 10^23 atomic mass units. Using Avogadro's number, we can calculate that this mass of Fluoride contains 2.90 x 10^25 atoms.

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Answer:

See explanation

Explanation:

The addition of an impurity lowers the melting point of a solid. If we add salt to ice, the melting point of the ice is lowered.

As this salty water is in contact with the ice, more of the salt dissolves to yield Na^+ and Cl^- and leads to the melting of more ice.

Freezing point is a colligative property hence it is affected by the presence of impurities. Hence, the addition of NaCl causes ice to melt faster.

Answer:

0.96

Explanation:

Number of moles of Fe(III) = 3/1000 *  0.002 M = 6 * 10^-6 moles

Number of moles of SSA = 7/1000 * 0.02 = 1.4 * 10^-4 moles

Total number of moles =  6 * 10^-6 moles +  1.4 * 10^-4 moles

Mole fraction of SSA = number of moles of SSA/ total number of moles.

Mole fraction of SSA =  1.4 * 10^-4 moles/  6 * 10^-6 moles +  1.4 * 10^-4 moles

Mole fraction of SSA = 0.96

Answer:

They have the same mass but different electrical charges.

Explanation:

Protons have a positive charge while neutrons have a neutral charge. Although they have different charges, they have the same amount of mass.

The protons and neutrons have the same mass but different electrical charges. THerefore, option (D) is correct.

A proton is described as a stable subatomic particle, a chemical symbol with +1e elementary charge. The mass of the proton is approximately equal to the mass of the neutron but 1836 times the mass of an electron.

Protons and neutrons are jointly together termed "nucleons" each with masses of approximately one atomic mass unit (a.m.u.). There will be one or more than one proton present in the nucleus of an atom. There is an attractive electrostatic central force that holds the atomic electrons.

The number of protons in the atom is referred to as the atomic number and is expressed by the symbol Z. Since each element in the periodic table has a unique number of protons, determines the chemical characteristics of the element.

As the neutrons present in the nucleus of an atom are neutral and do not carry any charge while the protons are positively charged.

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Answer:

Physical science

Life science

Explanation:

Answer:An alcoholic drink is a drink that contains ethanol, a type of alcohol produced by fermentation of grains, fruits, or other sources of sugar. The consumption of alcohol plays an important social role in many cultures. Most countries have laws regulating the production, sale, and consumption of alcoholic beverages.

Explanation: vodka the preferred alcoholic beverage of choice among alcoholics? #3 Doesn't make you feel bloated or full like beer does. It goes down quickly and smooth. #4 Gets you drunk just as fast as any other hard liquor can, and obviously much faster than beer or wine.

A quantity of the original isotope (18) is kept. A particular radioactive isotope's half-life is constant; it is unaffected by environmental factors and is unrelated to the starting concentration of that isotope.

These isotopes emit alpha, beta, and gamma rays as a result of their radioactive decay. A decay chain starts with a parent isotope.

The radioactive decay of parent isotopes yields daughter isotopes. Although reactions occasionally produce stable daughter isotopes, they are typically unstable and radioactive, which promotes the progression of decay chains.

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Answer: what materials transmits the most light waves?

Explanation:

Answer:

Mountains

Explanation:

Mountains are colder than the lower elevations.  When humid air enters a cooler region, the saturated air begins to cool  and this reduces the ability of the air to maintain the evaporated water is the gas state.  Molecules of water have reduced enerfy at the cooler temperatures.  They will slow down and coalesce with other water molecules to form small droplets of water.  The atmoshere cannot hold these heaevier droplets and they begin to fall  (i.e., rain).

One migh ask why does the air temperature drop at higher altitudes?  Heat rises, so why shouldn't it be warmer on top a mountain, compared to the valley.  The reason is that the atmosphere becomes less dense the further from Earth's center on gets.  This less dense air has a lower water saturation point, so it rains.

The number of moles of O₂ used to produce 4 moles of NO is 2 moles

First, shall write the balanced equation. This is given below:

N₂ + O₂ -> 2NO

From the balanced equation above,

2 moles of NO were obtained from 1 mole of O₂

With the above information, we can determine the number of moles of O₂ used to produce 4 moles of NO. This can be obtained as follow:

From the balanced equation above,

2 moles of NO were obtained from 1 mole of O₂

Therefore,

4 moles of NO will be obtain from = (4 × 1) / 2 = 2 moles of O₂

Thus, number of mole of O₂ used is 2 moles

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Answer:

No, it is not.

Explanation:

Oil is a non-renewable source of energy. ... Burning oil can pollute the air. Much of our oil has to be imported and it is becoming more and more expensive as reserves reduce and imports increase. Producing electricity from crude oil is expensive compared to other fossil fuels such as coal or gas.

*You Can put this in your own words

Six electrons are transferred in the overall reaction. The correct option is C.

The balanced chemical reaction is given as follows;

2Al(s) + 3HSO4-(aq) + 12H2O(l) → Al2O3(s) + 3SO42-(aq) + 12H3O+(aq)

The oxidation states of the species are as follows:

Al(s) → Al3+(aq) + 3e-HSO4-(aq) → SO42-(aq) + 3H+(aq) + 2e-Al2O3(s) → 2Al3+(aq) + 3O2-(aq)

The electrons lost by Al(s) are gained by the HSO4-(aq) ions.

Therefore, we need to multiply the oxidation half-reaction by 2 and the reduction half-reaction by 3 as shown below.

2Al(s) → 2Al3+(aq) + 6e-3HSO4-(aq) + 6e- → 6SO42-(aq) + 6H+(aq) + 2e-

Then, we add the two half-reactions to cancel out the electrons, yielding:

2Al(s) + 3HSO4-(aq) + 12H2O(l) → Al2O3(s) + 3SO42-(aq) + 12H3O+(aq)

Therefore, Six electrons are transferred in the overall reaction. The correct option is C.

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A soluble impurity usually has two effects on the melting point of a compound: an increase in melting point range and a decrease in melting point.

In chemistry, there are two types of impurities: soluble and insoluble.

Soluble impurities are those that dissolve in water quickly and also have a significant impact on the chemical properties of a compound such as a significant increase or decrease in the melting point and boiling point.

For example, salt, milk, and sugar compounds are soluble impurities.

Similarly, insoluble impurities remain undissolved when mixed in water and are also known as suspended impurities.

Examples of insoluble impurities are sand, oil, chalk, rocks, pebbles, etc.

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Americans are known to import more than 85 percent of all the seafood they eat. The true statement about the aquaculture industry in the US is Interest in aquaculture has been increasing.

A lot of keen interest is been shown in the aquaculture sector in the US. A poll carried out in the US has show that there has been growing interest in aquaculture in US federal waters.

This interest was due to different factors such as;

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A transition metal can be a good replacement for tin in tin can due to it's properties of existing in variable oxidation states.

The transition metals are defined as the elements  in which atoms are present whose d-sub-shell is partially filled .Due to which they give rise to cations with an incomplete d-sub-shell.

They are also defined as the elements which are present in the d-block of the periodic table, which includes groups from three to twelve.These elements are called transition elements as they show a transition between highly electro-positive group 1 and highly electro-negative group 17 elements.

They have characteristic properties due to which they can exist in variable oxidation states , form colored complexes and have catalytic properties as well.These elements are all technologically very important.

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Answer

Atoms in a liquid have more kinetic energy

so the easiest way to change a solid to a liquid is to add heat

When changing from a solid to a liquid, there is a magic temperature for every substance called the boiling point

Answer:

a -4

b - 8

c - 5

d 2

Explanation:

Significant Figures: The number of digits used to express a measured or calculated quantity. By using significant figures, we can show how precise a number is. ... Accuracy: Refers to how closely individual measurements agree with the correct or true value.

Answer:

because water wets stuff expect for fire.

Answer:

The meaning of wet is covered or saturated with water or another liquid, showing that is a glass is covered in water it is considered wet.

Explanation:

Examples of man-made endocrine disruptors include bisphenol A (BPA) and phthalates. Examples of nature-made endocrine disruptors include phytoestrogens and mycotoxins.

Man-made endocrine disruptors are synthetic chemicals that can interfere with the normal functioning of the endocrine system in humans and animals. Bisphenol A (BPA) is a commonly known man-made endocrine disruptor found in many plastic products, such as food containers and water bottles. BPA can mimic the hormone estrogen and disrupt the hormonal balance in the body. Phthalates are another example of man-made endocrine disruptors commonly found in plastics, cosmetics, and personal care products. They can interfere with hormone signaling and have been associated with adverse effects on reproductive health.

Nature-made endocrine disruptors are substances that occur naturally in the environment and can also affect the endocrine system. Phytoestrogens are naturally occurring compounds found in certain plants, such as soybeans and flaxseeds. They have a chemical structure similar to estrogen and can act as either weak estrogen agonists or antagonists in the body, potentially affecting hormonal balance. Mycotoxins are toxic compounds produced by certain fungi. Some mycotoxins, such as zearalenone, can exhibit estrogenic activity and disrupt endocrine function.

Both man-made and nature-made endocrine disruptors have the potential to interfere with the normal hormonal regulation in the body, leading to a range of health effects. It is important to be aware of these substances and take necessary precautions to minimize exposure, especially for vulnerable populations such as pregnant women and children.

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The molarity of the sugar solution at 25°C that has 100.0 g of glucose, C₆H₁₂O₆ (molar mass = 180 g/mol) dissolved in 1.50 L of water is 0.3704 M.

When it comes to determining the concentration of a solution, molarity is the key unit of measurement. Represented by the symbol M, this metric gauges the quantity of solute that has been dissolved in a specific volume of solution. Essentially, molarity refers to the number of moles of solute present per liter of solution.

Equation:

First, we can calculate the number of moles of glucose present in the solution:

Number of moles of glucose = mass of glucose / molar mass of glucose

Number of moles of glucose = 100.0 g / 180 g/mol

Number of moles of glucose = 0.5556 mol

Next, we can use the formula for molarity:

Molarity (M) = Number of moles of solute / Volume of solution in liters

Molarity (M) = 0.5556 mol / 1.50 L

Molarity (M) = 0.3704 M

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Answer: A. They were traveling through different types of rocks

Explanation:

The addition of 1 mL of 0.1 M KSCN to the 2 mL portion of the diluted solution produced a noticeable change in the color of the solution.

Specifically, the color of the solution became lighter, indicating that more hexathiocyanatoferrate(III) had been produced.

This observation can be explained by LeChatelier’s Principle, which states that a system at equilibrium will respond to any stress by shifting the equilibrium position to counteract the stress.

In this case, the addition of KSCN introduced more thiocyanate ions into the solution, which increased the concentration of the reactant (SCN-) in the equilibrium equation.

According to LeChatelier’s Principle, the system will shift the equilibrium position to counteract the increase in the reactant concentration.

This means that more product (Fe(SCN)63-) will be produced in order to use up the excess reactant.

As a result, the color of the solution became lighter, indicating the presence of more hexathiocyanatoferrate(III) product.

Therefore, the correct answer is: "The additional thiocyanate ion shifted the equilibrium toward the products, producing more hexathiocyanatoferrate(III) lightening the color. Fe3+(aq) + 6SCN-(aq) ⇔ Fe(SCN)63-(aq)."

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The number of moles of the cyclopropane that remains after 1.00 s is  6.1 * 10^-4 M.

By the use of the equation of the first order reaction, we can be able to find out the concentration at a given time.

The equation of the first order reaction can be written as;

ln[A] = ln[Ao] - kt

[A] = Concentration at time t

[Ao] = Initial concentration

k = rate constant

t = time

Then;

[A] = e^ln[Ao] - kt

[A] = e^ln6.00 - (9.2 * 1)

[A] = 6.1 * 10^-4 M

The amount of the cyclopropane left is  6.1 * 10^-4 M.

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The treatments would be defined as the four different cell phone companies being compared. Sampling 10 phones from each company and counting the number of defects for each phone allows for a comparison of the average number of defects across these four groups, or treatments.

In ANOVA (analysis of variance), the treatments refer to the different groups or levels being compared. In this case, the electronics company is comparing the quality of their cell phones to three competitors, so the treatments would be defined as the four different cell phone companies being compared.

Each treatment would have 10 observations (or cell phones) for the number of defects, and the ANOVA would test if there is a significant difference in the average number of defects among the four companies.

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If the threshold energy of the reaction 2016O(n, γ) 170 is 15.6 MeV, then the atomic mass of 170Ol can be calculated.

Given:Atomic mass of Ol (15.996415 amu)Atomic mass of neutron (1.008665 amu)M (Ol) = 15.996415 amuM (neutron) = 1.008665 amu Threshold energy of the reaction, E = 15.6 MeV The threshold energy (E) is the minimum amount of energy that an incoming neutron must have to trigger the nuclear reaction or the amount of energy that is needed to supply for the reaction to proceed.

The atomic mass of 170Ol can be calculated as follows:E = [M (n) + M (2016O) - M (170O)] x c²Where c = speed of light, M (n) = mass of neutron, M (2016O) = mass of oxygen-16M (170O) = mass of the oxygen-17, the product of the reaction.Rearranging the above equation:  M (170O) = [M (n) + M (2016O) - E/c²]Thus, M (170O) = [1.008665 + 15.994915 - (15.6 x 10⁶ eV/ (3.0 x 10⁸ m/s)²)] amuM (170O) = 16.98803 amuTherefore, the atomic mass of 170Ol is 16.98803 amu.

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Explanation:

the empirical formula is correct but I didn't got the question properly