overall, the physical properties of minerals provide a reliable means to identify common minerals. however, certain properties can exhibit a range of characteristics or values making them less useful for identification purposes. choose three physical properties that might vary considerably between samples of the same mineral and explain why such variability would exist.

Answer:

the pressure is raised and the temperature is lowered

Explanation:

According to the ideal gas law, there is no interaction between the molecules of an ideal gas. This implies that the molecules of an ideal gas are largely separated from each other and move around at great velocities in the vessel.

However, when the pressure is raised, molecules come into closer proximity with each other, similarly, when the temperature is lowered, the average kinetic energy of gas molecules is also lowered and intermolecular interaction become significant under these conditions. Hence, the ideal gas law now become inaccurate.

Answer:

vkhcohvoccf

uxihfoydohfufyfocidicicugxigdixifxtxtduration jfhgxfcixig

cigcih

Explanation:

cihcohcohccohcjjcofidytstitddgggxogxxtdrrtteeeeeiiiixiiitttdooodooxyక్సజిఫ్స్ట్టిగ్గ్స్గ్డ్గ్

The chemical formula O₂ which is oxygen is a molecule as it is made up  of 2 oxygen atoms.

Chemical  formula is a way of representing the number of atoms present in a compound or molecule.It is written with the help of symbols  of elements. It also makes use of brackets and subscripts.

Subscripts are used to denote number of atoms of each element and brackets indicate presence of group of atoms. Chemical formula does not contain words. Chemical formula in the simplest form  is called empirical formula.

It is not the same as structural formula and does not have any information regarding structure.It does not provide any information regarding structure of molecule as obtained in structural formula.

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Answer:

Epipelagic (sunlight)

Explanation:

Examples of organisms living in this zone are plankton, floating seaweed, jellyfish, tuna, many sharks, and dolphins.

Answer:

New environments for puppies may make them excited, fearful, aggressive, or confused.

Explanation:

"When your dog first experiences a new location or environment, there's no way of knowing how they'll react. New sights, sounds, and smells could make them fearful, aggressive, or over-excited, but with the proper training and introduction, most dogs will quickly adapt and start taking every new location in stride." - Excerpt from *Puppy training textbook*

New environments are also a good thing in puppy growth, to teach them how to learn and adapt to new surroundings.

Hope this helps :)

Explanation:

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✅(D) a molecular solid. These compounds have low melting points, low electrical conductivity, etc, so this is the correct answer.

IamSugarBee

Answer:

Ni(NO3)2 is the limiting reactant.

Explanation:

- First, we balance the equation...

Ni(NO3)2 + 2 KOH --->  2 KNO3 + Ni(OH)2

- Second, we find the moles of each substance...

65g Ni(NO3)2 / 182.703g Ni(NO3)2 = 0.356 mol Ni(NO3)2

58g KOH / 56.1056g KOH = 1.034 mol KOH

- Third, to make the molar ratio equal to each other for comparison, we either multiply KOH by 1/2 or multiply Ni(NO3)2 by 2 to compare the number of moles; because the Ni(NO3)2 to KOH molar ratio is 1 to 2. Note that the multiplication of moles is only for comparison. We do not use these multiplied values. We use the values from step 2...

0.356 mol Ni(NO3)2 * 2 = 0.712 mol Ni(NO3)2

0.712 mol Ni(NO3)2 < 1.034 mol KOH ... Ni(NO3)2 is the limiting reactant.

The reaction time decreases as the temperature increases of the reaction mixture increases.

A sample record of results is:

An increase in temperature leads to an increase in reaction rate or a decrease in reaction time.

The increase in temperature provides more thermal energy to the reactant molecules, which leads to an increase in the average kinetic energy of the molecules. As a result, more reactant molecules have sufficient energy to overcome the activation energy barrier and undergo successful collisions, leading to an increased reaction rate.

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Explanation:

it b

....

hope it helps!

Answer:1. metyletevinyl

4. (Z)-3-hydroxypropenal

Explanation:

Answer:

where is the answers at

Explanation:

HAZWOPER training and certification recognize:

The correct option is both A and C

HAZWOPER (Hazardous Waste Operations and Emergency Response) training and certification recognize that a large number of victims (as much as 80%) in hazardous waste incidents or emergencies will self-present or be self-referred for medical treatment.

Additionally, HAZWOPER training acknowledges that victims may use any entrance they can access at a hospital, not just the emergency department entrance.

This is because individuals affected by hazardous materials may arrive at different areas of the hospital seeking medical assistance.

Therefore, option d. Both A and C are correct statements regarding the recognition of HAZWOPER training and certification.

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The term that identifies the amount of heat needed to raise the temperature of 1 gram of a substance by 1 degree Celsius is Specific heat capacity.

Specific heat capacity is the quantity of heat needed to raise the temperature of 1 gram of a substance by 1 degree Celsius. The unit of specific heat capacity is joule per gram per degree Celsius (J/g⁰C).

Specific heat capacity is heat required to raise the temperature of a unit mass of a substance while heat capacity is the quantity of heat required to raise the temperature an entire mass of a substance.

Heat capacity is measure in Joules (J) while specific heat capacity is measured in joule per gram per degree Celsius (J/g⁰C).

Thus, the term that identifies the amount of heat needed to raise the temperature of 1 gram of a substance by 1 degree Celsius is Specific heat capacity.

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The term that identifies the amount of heat needed to raise the temperature of one gram of a substance by one degree Celsius is : ( A ) Specific heat

Specific heat also known specific heat is the amount of heat that is added to 1 unit ( gram ) of a substance in order to raise its temperature by one ( 1 ) degree Celsius of temperature.

Hence we can conclude that The term that identifies the amount of heat needed to raise the temperature of one gram of a substance by one degree Celsius is Specific heat

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Answer:

Condensation

Explanation:

Zoe is quite keen to have noticed what we call condensation. Air contains many components, one of those being water vapor. Like how sugar is soluble in water, water can be said to be "soluble" in air. Water will evaporate into the air to a certain extent. The higher the temperature of the air, the more water the air can hold. If the air has more water that it can hold (potentially because of a temperature decrease), the extra water will come out of the air. Zoe's water bottle was cold, and because the air around Zoe's bottle had cooled down, the air can not hold as much water as it could when it was warm, so the air deposited the extra water in the form of liquid water onto the bottle, giving the illusion that her bottle was sweating.

The mass of the aluminum sample is 52 g.

The mass of the aluminum is determined by applying the principle of conservation of energy as shown below.

heat lost by aluminum = heat gained by water

m₁c₁Δθ₁ = m₂c₂Δθ₂

where;

m₁(0.897)(93.2 - 17.8) = (300)(4.186)(17.8 - 15)

m₁(0.897)(75.4) = (300)(4.186)(2.8)

67.634m₁ = 3516.24

m₁ = 3516.24/67.634

m₁ = 52 g

Thus, the mass of the aluminum sample is 52 g.

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Microfauna are measured in all of the above units and is denoted as option D.

These are referred to as microscopic animals which lack mitochondrion and exists in the soil etc. The nematodes  and protozoa are mostly common organisms among them.

Microfauna can be seen with the use of microscope and can be measured in centimeters, millimeters etc based on the size of their body structure.

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I think it's either b or c

The sulfuric acid solution has a 0.175 M concentration.

The equation for the reaction between sulfuric acid and sodium hydroxide is as follows:

H2SO4 + 2NaOH → 2H2O + Na2SO4

To solve for the concentration of the sulfuric acid solution, we must first calculate the moles of sodium hydroxide needed to titrate the sulfuric acid solution. The molarity of the sodium hydroxide is given as 0.605 M, and the volume of sodium hydroxide used is given as 30.44 mL. Therefore, the number of moles of sodium hydroxide can be calculated as follows:

\(n(NaOH) = M(NaOH) * V(NaOH)\\n(NaOH) = 0.605 M * 0.03044 L\\n(NaOH) = 0.01844 mol\)

Now that we know the number of moles of sodium hydroxide required to titrate the sulfuric acid solution, we can calculate the number of moles of sulfuric acid present. Since the equation given is a 1:2 mole ratio, we can use the following equation:

\(n(H2SO4) = 2 * n(NaOH)\\n(H2SO4) = 2 * 0.01844 mol\\n(H2SO4) = 0.03688 mol\)

Now that we know the number of moles of sulfuric acid present, we can calculate the concentration of the sulfuric acid solution. The volume of the sulfuric acid solution is given as 210.3 mL. The molarity of the sulfuric acid solution can be calculated as follows:

\(M(H2SO4) =\frac{ n(H2SO4) }{ V(H2SO4)}\\\)

\(M(H2SO4) = \frac{0.03688 mol }{0.2103 L}\\M(H2SO4) = 0.175 M\)

Therefore, the concentration of the sulfuric acid solution is 0.175 M.

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Answer:

203.75 K

Explanation:

use the ideal gas law equation: PV=nRT, R being the constant 0.08206 L-atm/mol-K.

plug in the values given:

(7.6 atm) (11.0 L) = (5.0 mol) (0.08206 L-atm/mol-K) (T)

and solve for T!

Answer:

HOPE THIS HELPED :) good luck! ❤️

Explanation:

A reactant is a substance that is present at the start of a chemical reaction. The substance to the right of the arrow are called products . A product is a substance that is present at the end of a chemical reaction.

Answer:

Reactants are the starting substances and products are the ending substances in a chemical reaction.  The atoms in reactants are arranged one way and are rearranged in a different way to form the products (in other words, reactants are chemically different from products). The properties of reactants differ from the properties of products.

Explanation:

Sample response on Edge 2021

The amount, in grams, of \(CO_2\) that would be produced from the burning of 3.0 mol amyl alcohol would be 660.15 grams

From the equation of the reaction:

\(2C_5H_1_1OH + 15O2 ---- > 10CO_2 + 12H_2O\)

The mole ratio of amyl alcohol to the  \(CO_2\) produced is 2:10.

Thus, for 3.0 mol of amyl alcohol, 15 mol of  \(CO_2\) would be produced.

Mass of 15 mol  \(CO_2\) = 15 x 44.01 = 660.15 grams

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Answer: Antimony pentoxide

Hope this helps :)

The statement is correct. The photoelectric effect refers to the phenomenon where electrons are ejected from the surface of a material when it is exposed to light. The frequency of light striking an electron in a metal must be above the threshold frequency in order for the photoelectric effect to occur.

The statement is correct. The photoelectric effect refers to the phenomenon where electrons are ejected from the surface of a material when it is exposed to light. However, for the photoelectric effect to occur, the frequency of the incident light must be above a certain threshold frequency.

The threshold frequency is the minimum frequency of light required to dislodge electrons from the material. Below this threshold frequency, regardless of the intensity or duration of the light, no electrons will be emitted.

This behavior can be explained by the particle-like nature of light, where light is composed of discrete packets of energy called photons. The energy of a photon is directly proportional to its frequency. Only photons with energy greater than or equal to the binding energy of the electrons in the material can dislodge them.

Therefore, the frequency of light striking an electron in a metal must be above the threshold frequency in order for the photoelectric effect to occur.

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Answer:

Neutralization reactions occur when two reactants, an acid and a base, combine to form the products salt and water.

Explanation:

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Answer: Water and NaCl is always formed

Explanation:

I hope this helped!

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Answer:

  Field experiments can often have the potential to give scientists opportunities that are not possible in a lab setting.

Explanation:

  Having people "act natural" in a lab setting is impossible to truly achieve, as we all know what happens to our mental state and behavior when we are being actively observed. This is also especially helpful when conducting wildlife research, as there are a myriad of different things influencing animal and plant behavior that would be nigh impossible to recreate perfectly in a controlled lab setting.

  Field research can have its disadvantages as well, as it is very hard to only have one thing change (make an independent variable) in a wild environment with ever-changing weather, social effects, etc. Also, you, as the researcher, as causing an impact on the very location that you are observing, which can alter your results in unpredictable ways.

  The thing to remember is that each type of study has its advantages and disadvantages; if they didn't, then we'd all do the same type of research! You have to weigh your research options and figure out which one works best for your situation :)

We are going to assume that the gas behaves like an ideal gas.

1) When we work at constant pressure (Isobaric) and the temperature increases we add more energy to the gas. The molecules will move faster causing the volume to increase. So if we increase the temperature, the volume increases, that is, we have a directly proportional relationship. We can apply Charles's Law:

2) At constant volume (Isometric), if the temperature decreases there will be less energy in the system. Molecules move slower and will exert less pressure. So, we have a directly proportional relationship. We can apply Gay-Lussac's Law:

3) At constant temperature8Isothermic), if the volume decreases, it means that the molecules will be closer together, therefore they will exert more pressure and the pressure increases. It will be an inversely proportional relationship. We can apply Boyle's Law:

Therefore, in summary, the answers will be:

1) Increase - Direct

2) Decrease - Direct

3)Increase - Inverse

The pH of acid is between 0-7 on pH scale while for base pH range is from 7-14. Therefore, Therefore, the average pH of oceans is 8.1 while for pure water is 7 8.1 minus 7 that’ll be 1.1 higher.  pH is a unitless quantity.

pH is a measurement of amount of hydronium ion H₃O⁺ in a given sample. More the value of hydronium ion concentration, more will be the solution acidic.

On subtracting pH from 14, we get pOH which measures the concentration of hydroxide ion in a given solution. pH depend on the temperature. At room temperature pH scale is between 0 to 14. pH of neutral solution is 7.

Mathematically,

pH=-log[H⁺]

The average pH of oceans is 8.1 while for pure water is 7 8.1 minus 7 that’ll be 1.1 higher.  

Therefore, the average pH of oceans is 8.1 while for pure water is 7 8.1 minus 7 that’ll be 1.1 higher.  

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