The gesture of Arjuna standing at Krishna's feet with folded arms represents the aspect of Arjuna's character known as
Humility is an aspect of Arjuna's character that is represented by his gesture of standing at Krishna's feet with folded arms. Humility is the quality of being humble, which is the ability to show modesty, kindness, and an appreciation of the worth of others.
According to the Bhagavad Gita, humility is a highly regarded virtue and is one of the essential qualities that a person should have. It is said that by cultivating humility, a person can overcome many of the obstacles and difficulties that life throws their way. Humility is also believed to be the key to true knowledge and wisdom.
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The last sentence in the “Introduction” was: “In this lab you will determine the density (thus characterizing a substance) of a liquid and of a solid-liquid mixture of unknown composition, and then determine the density of a liquid and a solid of known compositions and evaluate how accurate your determinations were.” Give names of those four substances mentioned in the sentence above. A liquid of unknown composition: _________________________________________, a liquid of known composition: ___________________________________________, a solid-liquid mixture of unknown composition: _______________________________, a solid of known composition:
Answer:
A liquid of unknown composition: Unknown liquid
A liquid of known composition: Known liquid
A solid-liquid mixture of unknown composition: Unknown solid-liquid mixture
A solid of known composition: Known solid
PLEASE MARK AS BRAINLIESTChemical formula for barium chromate
Answer:
Ba + Cr + O₄
A balloon filled with 0.0303 mol of helium at 30°C and a pressure of 1.0 atm occupies a volume of 0.75 L and has a density of 0.161 g/L. What would the density of the helium gas be if the balloon was placed in the freezer at -10 C and a pressure of 2.0 atm?
Answer:
the density of the helium gas would be approximately 0.369 g/L when the balloon is placed in the freezer at -10°C and a pressure of 2.0 atm.
Explanation:
To calculate the density of helium gas in the balloon after it is placed in the freezer at -10°C and a pressure of 2.0 atm, we can use the ideal gas law and the relationship between density, molar mass, and molar volume.
First, let's find the initial molar volume of the helium gas using the given conditions:
PV = nRT
Where:
P = pressure = 1.0 atm
V = volume = 0.75 L
n = number of moles = 0.0303 mol
R = ideal gas constant = 0.0821 L·atm/(mol·K)
T = temperature in Kelvin
To convert Celsius to Kelvin, we add 273.15:
T = 30°C + 273.15 = 303.15 K
Using the ideal gas law, we can calculate the initial molar volume:
V_initial = (n * R * T) / P
V_initial = (0.0303 mol * 0.0821 L·atm/(mol·K) * 303.15 K) / 1.0 atm
V_initial ≈ 0.754 L
Next, we can calculate the molar mass of helium (He) using the atomic mass of helium:
Molar mass of He = 4.003 g/mol
Now we can calculate the initial density of the helium gas in the balloon:
Initial density = (mass of helium gas) / (volume of helium gas)
Initial density = (0.0303 mol * 4.003 g/mol) / 0.754 L
Initial density ≈ 0.161 g/L
Now let's find the final density of the helium gas when the balloon is placed in the freezer at -10°C and a pressure of 2.0 atm.
We will use the ideal gas law again with the new conditions:
P_final = 2.0 atm
T_final = -10°C + 273.15 = 263.15 K (converted to Kelvin)
To find the final molar volume, we rearrange the ideal gas law equation:
V_final = (n * R * T_final) / P_final
V_final = (0.0303 mol * 0.0821 L·atm/(mol·K) * 263.15 K) / 2.0 atm
V_final ≈ 0.328 L
Finally, we can calculate the final density of the helium gas:
Final density = (mass of helium gas) / (volume of helium gas)
Final density = (0.0303 mol * 4.003 g/mol) / 0.328 L
Final density ≈ 0.369 g/L
The sun, the moon, the stars, the earth all are made up of 4) Symbol 2) Mixture 3) Matter 1) Material
The sun, the moon, the stars, the earth all are made up of matter.
Matter refers to anything that has mass and occupies space. It is the substance that makes up all physical objects in the universe, including both living and non-living things. Matter can exist in different states, namely solid, liquid, and gas, depending on the arrangement and movement of its particles. Matter is composed of atoms, which are the smallest units of matter that retain the chemical properties of an element. Atoms combine to form molecules, which can be made up of one or more different types of atoms bonded together. These molecules then come together to form different substances.
The properties of matter, such as its density, color, texture, and ability to conduct heat or electricity, are determined by the composition, arrangement, and interactions of its particles. Matter can undergo physical and chemical changes, including phase transitions (such as melting, freezing, and vaporization) and chemical reactions, where substances can be transformed into new substances with different properties. It is important to note that matter also includes forms that are not directly visible to the eye, such as subatomic particles
The sun, the moon, the stars, and the Earth are all made up of matter. Matter refers to anything that has mass and occupies space. It is composed of atoms and molecules, which are the building blocks of all substances. While symbols can represent or signify various concepts or objects, they are not physical entities made up of matter. A mixture is a combination of two or more substances, but it does not encompass celestial bodies like the sun, moon, stars, or Earth. Material is a more general term that can refer to various physical substances, but it does not specifically indicate the composition or nature of celestial bodies.
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Besides solubility, state two other physical properties that are different for salt and sand.
Answer:Electrical Conductivity,soluble
Explanation:
Salt is a non-magnetic solid and is soluble in water. Sand is a non-magnetic solid and is insoluble in water.
Electrical Conductivity: Salt is an electrolyte and conducts electricity when dissolved in water or in a molten state. This is because salt dissociates into ions (Na+ and Cl-) that can carry electric current. In contrast, sand is a covalent compound and does not conduct electricity, as it does not dissociate into ions in the same way as salt. Sand is considered an insulator in terms of electrical conductivity.
Objects a and b are brought close to each other. Object a will soon become positively charged. Identify the charge that must transfer for this situation to occur
Answer:
A Negative Charge
Explanation:
Positive Charges Repel
Positive and Negative Charges Attract.
Negative Charges Repel.
Which two of the following atoms are unstable and are likely to form a chemical bond?
Select one:
a. I and II
b. II and III
c. II and IV
d. III and IV
Which is the middle of the three ear bones?
cochlea
stapes
incus
malleus
the nucleus of every atom contains protons. true or false?
Answer:
true
Explanation:
atomic nuclei consist of electrically positive proton and electrically neutral neutrons. These are held together by the strongest known fundamental force, called the strong force.
The nucleus of every atom contains protons. This statement is true.
Protons are positively charged subatomic particles, which are one of the fundamental components of an atom, along with neutrons and electrons. Protons play a crucial role in determining the identity of an element. They determine the atomic number of an element.
The atomic number is used to arrange elements in the periodic table and is used as a basis for defining the number of electrons in an atom of that element. The arrangement and combination of protons, along with neutrons, determine the atom's mass and stability.
In summary, protons are an essential component of the nucleus in all atoms, making the statement true.
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which is an example of a colloid? a mixture that settles out, a mixture that scatters light, a mixture that is separated by filtration, or a salt and water mixture?
These substances have dispersed particles that are large enough to scatter light, making the beam visible. Therefore, out of the options provided, a mixture that scatters light is an example of a colloid. Option B)
A colloid is a type of mixture in which particles are dispersed throughout a medium, creating a homogeneous appearance. Unlike solutions, where the particles are completely dissolved, and suspensions, where the particles settle out, colloids have particles that are larger than those in solutions but smaller than those in suspensions. One characteristic of colloids is that they can scatter light due to the size of the particles. This scattering of light is known as the Tyndall effect. Examples of colloids include milk, fog, and aerosol sprays. These substances have dispersed particles that are large enough to scatter light, making the beam visible. Therefore, out of the options provided, a mixture that scatters light is an example of a colloid. Therefore option B) is correct
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Note Complete Question
which is an example of a colloid?
a mixture that settles out,
b mixture that scatters light,
c mixture that is separated by filtration,
d salt and water mixture?
Which statements are true about catalysts
The true statements about catalysts are the statement 1,2 and 3.
1. Catalysts increase the rate of reaction: Catalysts facilitate chemical reactions by providing an alternative reaction pathway with lower activation energy. They enhance the rate of the reaction without being consumed in the process.
2. Catalysts behave as reactants in the reaction mixture: Catalysts participate in the reaction by interacting with the reactants. They form temporary bonds with the reactant molecules, leading to the formation of an intermediate complex that ultimately results in the desired products.
3. Catalysts decrease the activation energy of a reaction: Catalysts lower the energy barrier required for a reaction to occur by providing an alternative pathway with a lower activation energy. This enables the reactants to overcome the energy barrier more easily, thus increasing the reaction rate.
4. Catalysts show no physical change at the end of the reaction: Catalysts are not consumed or permanently altered in the reaction. They remain chemically unchanged and are available to participate in subsequent reaction cycles.
The statement "Catalysts are required in large concentrations in a reaction" is false. Catalysts work effectively even in small concentrations, as their role is to facilitate the reaction rather than being directly involved in the stoichiometry of the reaction.
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What is the Difference between tcs and non tcs foods
Answer:
Tcs foods are foods that pose a greater risk of causing foodborne illness if not prepared.
Non Tcs foods on the other hand, are foods that are less likely to support the growth of bacteria and have a lower risk of causing foodborne illness.
Lewis Structure for NO3-
Answer::
Explanation::
A rocket can be powered by the reaction between dinitrogen tetroxide and hydrazine:
20a
An engineer designed the rocket to hold 1.35 kg N2O4 and excess N2H4. How much N2 would be produced according to the engineer's design? Enter your answer in scientific notation.
According to the engineer's design, 14.67 moles of N2 would be produced in the reaction.
To determine the amount of N2 that would be produced according to the engineer's design, we need to understand the stoichiometry of the reaction between dinitrogen tetroxide (N2O4) and hydrazine (N2H4).
The balanced chemical equation for the reaction is:
N2H4 + N2O4 → N2 + 2H2O
From the balanced equation, we can see that one mole of N2H4 reacts with one mole of N2O4 to produce one mole of N2. Therefore, the mole ratio between N2H4 and N2 is 1:1.
Given that the engineer designed the rocket to hold 1.35 kg of N2O4, we need to convert this mass to moles using the molar mass of N2O4. The molar mass of N2O4 is approximately 92.01 g/mol.
Moles of N2O4 = Mass of N2O4 / Molar mass of N2O4
= 1.35 kg / 92.01 g/mol
= 14.67 mol
Since the mole ratio between N2H4 and N2 is 1:1, the number of moles of N2 produced would be the same as the number of moles of N2O4, which is 14.67 mol.
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