true or false: in major keys, the tonic, subdominant, and dominant triads are major.

(a) To get the pH of the media to 5.8, you would add NaOH solution. NaOH is used as a basic solution, and when it is added to a solution, it will increase the pH of the solution.

(b) The molecular weight of BA is 225.3. To prepare a 1M solution, you would have to weigh out 225.3 grams of BA.(c) To convert a 1M solution of BA to mg/mL, you can use the following equation: 1 mole = molecular weight in grams; 1000 millimoles = 1 mole. So, 1 M = 1000 mg/mL. Therefore, a 1M solution of BA is equivalent to 1000 mg/mL .(d) To convert a concentration of 1000 mg/mL .

Therefore, to calculate the weight required for a 5 mM solution, use the following formula :Mass of BA = molarity × volume × molecular weight= 5 × 0.001 × 225.3= 1.1265 grams(f) To convert a concentration of 5 mM to mg/mL, we use the following formula: Concentration (mg/mL) = (Concentration (mM) × Molecular weight) / 1000= (5 × 225.3) / 1000= 1.1265 mg/mL(g)

To convert a concentration of 1.1265 mg/mL to mg/L, we multiply by 1000, so 1.1265 mg/mL = 1126.5 mg/L.(h) Given that the stock solution of BA is 5 mM and the working solution is 0.2 mg/mL.

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This is a type of bonding that is formed from the from the attraction of oppositely charged ions in a compound.

For instance, MgCl2 is an ionic compound because the 2 positive ions wipossessed by the magnessium atom will attract each of the negtaive ion possessed by each of the chlorine atom to form the magnessium chloride compound

Using the Lewis symbol to demonstrate the bondng:

From the disgram, the negative ions on chlorine atoms will get attracted to the positive ions on the magnessium ion.

For this problem, we could use the ideal gas equation:

Where P is the pressure, V is the volume, R is a constant and T is the temperature.

Before we start solving, we should remember the units:

P [atm]

V [L]

Explanation:

The SI Unit of sound is decibel.

or we can say that

The SI Unit of sound is watt per square metre (i.e.w/m2).

Answer:

The electron from the ground state to occupy a next energy level. In this case,we say that the electron is excited

Answer:

False.

Explanation:

The atomic number is equal to the number of Protons found in an atom.

Answer:

Explanation:

- Atomic number is equal to the protons

- Protons are equal to electrons.

Hope this helped,

Kavitha Banarjee

Answer:

they ate lelo pudina hahahha

Answer:

Over time, the limestone is broken down into its chemical parts and may come back to the surface as volcanic CO2 (in the atmosphere). From the atmosphere, the CO2 might again become part of the biosphere by molluscs or corals absorbing the CO2 to help make their shells

Explanation:

Over a long period of time, we would take a look at the rock "limestone" through the rock cycle. Limestone being a sedimentary rock would be converted to marble, a metamorphic rock if subjected to metamorphic conditions over an extensive period of time.

Answer: If a pinch of mercury is consumed you will die from it so using a mercury thermometer is very unsafe if its breaks and a child consumes that mercury.

Explanation:

Don't use one

If the glass breaks and the mercury is not properly cleaned up, the little silvery ball within a mercury thermometer might be hazardous. As the mercury evaporates, it may pollute the air around and turn dangerous to both people and animals.

Children that have been exposed to mercury have lower IQs, hearing impairments, and worse coordination.

Long-term exposure worsens and exacerbates symptoms, which may lead to personality changes or even coma.

Mercury thermometers can be replaced by a number of things:

These non-mercury fever thermometers are significantly safer and equally accurate as mercury thermometers.

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Wood's tensile strength is reduced. Another risk factor for the strength of the wood is the loading time. The rigidity of wood is affected by temperature.

Wood is one of the most common and useful natural materials. It is the main tissue that supports and conducts nutrients in trees and other plants. Wood comes in a variety of colours & grain patterns and is produced by numerous botanical species, comprising both gymnosperms & angiosperms.

Its wood's tensile strength is reduced. Another risk factor for the strength of the wood is the loading time. The rigidity of wood is affected by temperature. Unfavourable weather and unexpected temperatures will have an impact on the wood's strength. Among its attributes are mechanical, chemical, and physical qualities.

Therefore, wood's tensile strength is reduced. Another risk factor for the strength of the wood is the loading time.

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Answer:

5moles

Explanation:

number of moles=mass/molar mass

The molar mass of water is 18.0 g/mol. A mass of 90.0 grams of water is equivalent to 5 moles. Therefore, option B is correct.

The mass in grams of one mole of a substance is defined as its molar mass. Molar mass is measured in grams per mole, abbreviated as g/mol. The isotopic atomic mass of a single isotope of any given element is a value that compares the mass of that isotope to the mass of the isotope carbon-12.

A compound's molar mass can be calculated by adding the standard atomic masses (in g/mol) of its constituent atoms.

A compound's molar mass indicates the mass of one mole of that substance. In other words, it tells you how many grams of a compound there are per mole. As a result, the units for molar mass are grams/mole.

number of moles = mass / molar mas

=  90.0 grams /  18.0grams

= 5 moles

Thus, option B is correct.

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According to World Population Review 2022 the safest country to live are as follows.

These countries are listed safe by calculating global peace index.

This index measures the nation's and regions peacefulness and is finally reviewed by Institute of Economic and Peace (IEP).

The role of IEP is to measure peace at the worldwide and country level degree and lets us to evaluate the social, political and financial elements that create peace. Each year the Institute for Economics and Peace produces the Global Peace Index, the world’s main degree of countrywide peacefulness, rating 163 nations in line with their ranges of peace.

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The minimum uncertainty in the energy of the excited state is approximately 0.206 eV.

According to the Heisenberg uncertainty principle, there is an inherent uncertainty in the measurement of certain pairs of physical properties, such as the position and momentum or the energy and time of a quantum system.

The uncertainty principle can be expressed mathematically as ΔE Δt ≥ ħ/2, where ΔE is the uncertainty in the energy of the system, Δt is the uncertainty in the time interval over which the energy is measured, and ħ is the reduced Planck constant.

In this case, the given time interval is Δt = 10^(-8) s. We can use this value to calculate the minimum uncertainty in the energy of the excited state:

ΔE Δt ≥ ħ/2

ΔE ≥ ħ/(2Δt)

ΔE ≥ (6.626 x 10⁻³⁴ J s)/(2 x 10⁻⁸ s)

ΔE ≥ 3.313 x 10⁻²⁶ J

To convert this energy uncertainty to eV, we can use the conversion factor 1 eV = 1.602 x 10⁻¹⁹ J:

ΔE = (3.313 x 10⁻²⁶ J) / (1.602 x 10⁻¹⁹ J/eV)

ΔE ≈ 0.206 eV

Therefore, the minimum uncertainty in the energy of the excited state is approximately 0.206 eV. This means that the energy of the excited state can fluctuate by up to this amount over the time interval Δt = 10⁻⁸ s.

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The net ionic equation for the reaction between aqueous sodium fluoride and hydrochloric acid is B. Na+ (aq) + F- (aq) + H+ (aq) + Cl- (aq) → Na+ (aq) + Cl- (aq) + HF (aq)

This is the net ionic equation for the reaction between aqueous sodium fluoride and hydrochloric acid. The balanced equation for this reaction is NaF (aq) + HCl (aq) → NaCl (aq) +HF (aq).

The net ionic equation is derived by canceling out the spectator ions, which are ions that don't participate in the chemical reaction. In this case, Na+ and Cl- are spectator ions, which means that they don't participate in the reaction and are present in the same form on both sides of the equation. Therefore, they are cancelled out, leaving the net ionic equation Na+ (aq) + F- (aq) + H+ (aq) + Cl- (aq) → Na+ (aq) + Cl- (aq) + HF (aq).

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Answer: The Answer is

Does it require medium to travel

Explanation:

Answer:

does it require a medium

Explanation:

trust me

Answer:

I believe the answer would be weathering

Answer:

Erosion

Explanation:

Because....

Deposition is the action of deposing someone, especially a monarch.

weathering is the process of wearing or being worn by long exposure to the atmosphere.

Answer:

ok here is you answer

Explanation:

Blood is a liquid because it is composed of cells and plasma that are suspended in a liquid state and can easily flow through the circulatory system, delivering oxygen and nutrients to cells and removing waste products.

Answer:

True

Explanation:

Because yes

Answer:

Man-made radiation is generated in range of medical, commercial and industrial activities and natural occuring radiation occurs due to minerals.

use a strong base to neutralize, like NaOH, KOH, etc

Atomic orbitals are places on an atom where there is a very high chance of finding electrons. Electrons are located in the area termed the electron cloud that surrounds the nucleus of an atom.

The set of primary particles that comprise an atom includes many other particles than the electron. Like other elementary particles, electrons can collide with other particles and, when they are diffracted, exhibit wavelike characteristics. Atomic orbitals are places on an atom where there is a very high chance of finding electrons. A chemical element is made up of an atom, which is the smallest building block of ordinary matter. Every substance—solid, liquid, gas, and plasma—is made up of neutral or ionised atoms. The average atomic diameter is 100 picometers or less.

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The pressure of the gas produced is approximately 587.17 kPa.

To solve this problem, we first need to find the amount of gas produced by the reaction of aluminum hydroxide with ammonium persulfate, then use the Ideal Gas Law (PV = nRT) to calculate the pressure.

First, let's find the number of moles of ammonium persulfate by using the molar mass:

10.35 g ÷ (2 * (1 + 32 + 64 + 16)) g/mol = 0.108 mol

Next, let's find the number of moles of aluminum hydroxide:

613.28 mL * 2.744 M = 1692.04 mol

Now, let's assume that the reaction goes to completion and that all the aluminum hydroxide reacts with ammonium persulfate, so the number of moles of gas produced will be equal to the number of moles of ammonium persulfate:

0.108 mol

Finally, we can use the Ideal Gas Law to calculate the pressure:

P = (n * R * T) / V

where n = 0.108 mol, R = 8.31 J/mol K, T = (42.455 + 273.15) K, and V = 1536.70 mL * 10^-3 L

P = (0.108 * 8.31 * (42.455 + 273.15)) / (1536.70 * 10^-3)

P = (0.108 * 8.31 * 315.605) / (1.5367)

P = 905.752 / 1.5367

P = 587.17 kPa

So, the pressure of the gas produced is approximately 587.17 kPa.

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Answer:

4

Explanation:

Answer:

B.

Explanation:

I don't know much about this subject, but it seems that a wave is when the line is above the line in the middle.

Answer:

The molar mass of NO (nitrogen monoxide) is approximately 30.01 g/mol.

Explanation:

The molar mass of a substance is the mass of one mole of that substance, expressed in grams per mole (g/mol). The molar mass of NO (nitrogen monoxide) can be found by adding up the atomic masses of nitrogen (N) and oxygen (O), which can be found on the periodic table of elements. The molar mass of NO is approximately 30.01 g/mol.

answer:

c. tape measure

because a tape measure can extend and retract and can measure in inches, half inches, centimeters and more small measurements!

explanation:

hope this helped <3 also if wouldn't mind could you pls give me brainliest? (im trying to level up) thanks! :)

Answer:

D

Explanation:

Tape measures and meter sticks are usually used to measure long distances. A metric ruler is usually used to measure lengths that are less than 30 cm. A micrometer is used to precisely measure small objects.

To use a micrometer, an object is inserted between two rods. Then, the moveable rod is twisted, like a screw, until it is positioned snugly against the object. Finally, the object's length is measured using the scale on the micrometer.

so i hope this helps

Answer:

\(2.13\%\)

Explanation:

Quantity of copper measured by a student = 4.6 grams

Original quantity of copper = 4.7 grams

Error in measurement = Original quantity of copper - Quantity of copper measured by a student  \(=4.7-4.6=0.1\) grams

To find the percent error, apply the following formula:

Percent error = (Error in measurement / Original quantity of copper) × 100

\(=\frac{0.1}{4.7}(100)=2.13\%\)

Of the given options, pentose sugar is D-Sorbose.

Pentose sugars: These are a class of sugars that have five carbon atoms in their molecular structure. Pentose sugars are one of the two most common types of sugars found in living organisms, the other being hexose sugars. DNA and RNA, as well as many coenzymes, contain pentose sugars.

The pentose sugars are-Ribose, Deoxyribose, Xylose, Arabinose, etc. Glyceraldehyde is a triose sugar, and fructose and glucose are hexose sugars. L-glucose, on the other hand, is an unnatural isomer of glucose that has no known biological function. The correct answer is: D-Sorbose.

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Answer:

O by excretion of waste and the death of the top consumer

Explanation:

The top consumers in the food web pass energy and matter back to the next trophic level when they excrete waste products and also when they die.

Excretion is the passing out of waste materials of metabolism.

During the death of an organism, organic materials are liberated back into the ecosystem. Carbon is released into the soil, carbon dioxide into the atmosphere etc.

These materials are then recycled back into the ecosystem by the activities of plant and special organisms called decomposers. These organisms feed on dead animals especially.

To determine the statistical analysis is a difference between the groups we have to Calculate the number of participants who preferred each soda

Experiment design for studying soda preference A well-designed experiment typically involves identifying a problem, designing a study that will yield data to answer the research question, and collecting and analyzing data.

In this case, you would like to conduct an experiment in class to see if your classmates prefer the taste of regular coke or diet coke. The following is an experiment design for this study.

Step 1: Develop a research question and hypothesis. The research question in this study is “Which soda do my classmates prefer, regular coke or diet coke?”The hypothesis of this study is that more students will prefer regular coke to diet coke.

Step 2: Select a sample of participants. A sample of participants should be chosen for the study. The sample should be large enough to provide sufficient data but small enough to be manageable. In this case, you could select a sample of 50 participants.

Step 3: Divide participants into two groups. Divide the participants randomly into two groups, with each group containing an equal number of participants. One group will be given regular coke, while the other group will be given diet coke.

Step 4: Ask participants to taste their assigned soda. Once the participants are divided into groups, give each participant a cup of the soda they have been assigned to taste. Be sure that each participant does not know which soda they are tasting to avoid any bias.

Step 5: Collect data. After the participants have tasted their assigned soda, ask them which one they preferred. Record their answers and tally the results.

Step 6: Analyze the data. Calculate the number of participants who preferred each soda. Use statistical analysis to determine whether there is a statistically significant difference between the groups.

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The value of Y in the formula when 2.8g of silicon react with 3.2g of oxygen, is 2

The numbers in the formula of a compound determine the ratio of moles of each element in the compound.

Given:

2.8g of silicon

3.2g of oxygen

[relative atomic mass of silicon is 28 and of oxygen is 16]

For silicon, n = 2.8 ÷ 28 = 0.1    (n= moles)

For oxygen, n = 3.2 ÷ 016 = 0.2

For the mole ratio, we divide each value of the moles by the smallest number of moles calculated which is 0.1 moles.

For Silicon = 0.1/0.1 = 1

For Oxygen = 0.2/0.1 = 2

Taking the mole ratio as their subscripts.

The ratio of Si:O is 1:2

SiO\(_{2}\) is the formula of silicon dioxide.

The value of y in the formula SiO\(_{Y}\) is 2 when 2.8g of silicon react with 3.2g of oxygen.

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