Answers
11.4 g/cm³ is equivalent to 1.14 Pg/dal. In order to convert 11.4 g/cm³ to Pg/dal, we need to use the following conversion factors:
1 g = 10¹² Pg (pico-grams)
1 cm³ = 10⁻¹ dal (deca-liters)
First, we can convert the density from grams per cubic centimeter to grams per liter, since both of these are common units for density. To do this, we simply multiply by 1000 (since there are 1000 cubic centimeters in a liter):
11.4 g/cm³ x 1000 cm³/L = 11400 g/L
Next, we can convert from grams to pico-grams and from liters to deca-liters:
11400 g/L x 10⁻¹² Pg/g x 10⁻¹ dal/L = 1.14 Pg/dal
Therefore, 11.4 g/cm³ is equivalent to 1.14 Pg/dal. This conversion shows that the density is much higher when expressed in pico-grams per deca-liter, as compared to grams per cubic centimeter.
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Related Questions
What do the conclusions tell about the experiment?
A. The conclusions tell why the data support or reject the hypothesis.
OB. The conclusions tell what other scientists think about the
experiment.
OC. The conclusions tell if the scientific method was followed.
OD. The conclusions tell how the experiment should be repeated.
SUBMIT
Answers
The conclusions tell why the data support or reject the hypothesis. The correct option is A
What is conclusions ?The final step in the scientific method is to draw conclusions from an experiment. They provide a summary of the experiment's findings and a discussion of how the data confirm or refute the hypothesis.
The conclusions ought to go through the experiment's limitations and recommend any potential future studies.
Therefore, The conclusions tell why the data support or reject the hypothesis.
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6. An unknown compound is analyzed and found to consist of 49% carbon, 2.7
% hydrogen, and 48.2 % chlorine. If the molecular mass of the compound is 150,
what is the molecular formula of the compound?
Answers
Answer:
Molecular formula = C₆H₄Cl₂
Explanation:
Given data:
Percentage of hydrogen = 2.7%
Percentage of carbon = 49%
Percentage of chlorine = 48.2%
Molar mass of compound = 150 g/mol
Molecular formula = ?
Solution:
Number of gram atoms of H = 2.7 / 1.01 = 2.67
Number of gram atoms of Cl = 48.2 / 16 = 1.36
Number of gram atoms of C = 49 / 12 = 4.08
Atomic ratio:
C : H : Cl
4.08/ 1.36 : 2.67/1.36 : 1.36/1.36
3 : 2 : 1
C : H : Cl = 3 : 2 : 1
Empirical formula is C₃H₂Cl.
Molecular formula:
Molecular formula = n (empirical formula)
n = molar mass of compound / empirical formula mass
Empirical formula mass = 12×3 + 1.01 ×2 + 35.5 = 73.52 g/mol
n = 150 / 73.52
n = 2
Molecular formula = n (empirical formula)
Molecular formula = 2 (C₃H₂Cl)
Molecular formula = C₆H₄Cl₂
Explain how to count the number of elements in a compound
Answers
Answer:
Using the formula cards again, add the coefficient of 2 in front of the formula and have them recalculate the number of each element and the total number of atoms in each element.
Explanation:
The number of elements in a compound is counted by identifying and counting the chemical symbols represented in the chemical formula
A compound is a substance that is a mixture of more than one elements.
Compounds are made of two or more elements. These elements are represented by their symbols. These symbols can be identified and the number of elements represented by these symbols are counted.
For example, in the compound \(H_2O\):
H represents Hydrogen
O represents Oxygen
The elements in Water ( \(H_2O\)) are Hydrogen and Oxygen
Therefore, the number of elements in \(H_2O\) is 2
Also in, \(NaCl\)
The elements are Sodium(Na) and Chlorine(Cl)
There are two elements in NaCl
Hence, the number of elements in a compound is counted by identifying and counting the chemical symbols represented in the chemical formula
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What happened when the ball was pulled toward the center of gravity?
Answers
When the ball was pulled toward the center of gravity is the gravity pulls the ball towards the center of the earth.
The gravity pull the ball towards the center of gravity is due the gravitation force by earth acted on ball. the center of gravity is the point of ball where the weight is distributed in all direction. The center of gravity of uniform ball is at the geometrical centre. if we through a ball in upward direction , the force of gravity pull the ball in downward direction . The force of gravity is directly proportional l to the mass of two objects and inversely proportional to the distance between them.
Thus, When the ball was pulled toward the center of gravity is the gravity pulls the ball towards the center of the earth.
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True or False? In plant cells, the nucleus contains DNA? HELP
Answers
Answer:
false
The nucleus houses the cell's DNA and directs the synthesis of proteins and ribosomes. ... Plant cells have a cell wall, a large central vacuole, chloroplasts, and other specialized plastids, whereas animal cells do not
Explanation:
Of the following, only _____ is impossible for an ideal gas. a. V1/T1 = V2/T2 b. V1/V2 = T1/T2 = 0 c. V1/T1 = V2/T2 d.V1/v2 = T1/T2 e.V2=T2/T1 X V1
Answers
Only Option A, V1/T1 = V2/T2 is impossible for an ideal gas.
Ideal gas, sometimes known as a perfect gas, is a gas that physically complies with the ideal, or general, gas law, a particular idealized relationship between pressure, volume, and temperature. This certain group of gases has a unique set of properties. Ideal gases are considered to occupy negligible volume, and their molecules have no intermolecular forces of attraction.
Charles' Law can be expressed as:
V1/T1 = V2/T2, where volume = V and temperature = T of an ideal gas at constant pressure.
Only option A is not equivalent to Charles' Law expression. The remaining choices all rearrange to the original equation.
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.Which of the following best explains why frequency and wavelength have an indirectly proportional relationship? (1 point)
Answers
The correct relationship between the frequency, the wavelength and the wave speed is option D
Relationship between frequency and wavelengthFrequency and wavelength have an inversely proportional relationship. This means that as the frequency of a wave increases, its wavelength decreases, and vice versa.
The mathematical relationship between frequency and wavelength is given by the equation:
c = f × λ
This relationship between frequency and wavelength is important in many areas of science.
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Vm will be close the Eion which has the _____ conductance at the point in the AP
Answers
Vm will be close the Eion which has the highest conductance at the point in the AP.
Vm, the membrane potential of a neuron, will be closest to the equilibrium potential (Eion) of the ion with the highest conductance at that point in the action potential.
Conductance is a measure of how easily ions can move across the membrane, and the ion with the highest conductance at a given point in the action potential will have the greatest influence on the membrane potential.
At rest, the membrane potential is close to the equilibrium potential of potassium (EK) because the resting conductance of potassium is high. During depolarization, the conductance of sodium (ENa) increases, and the membrane potential approaches the equilibrium potential of sodium.
During repolarization and hyperpolarization, the conductance of potassium increases again, and the membrane potential returns to EK.
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please help! its due at the end of class.
Answers
Answer:
2.down is hypotheses and 23.across is experiment
Explanation:
akechis pancakes
3. To find an object's mechanical energy. you add its A kinetic and potential energy B kinetic and thermal energy C potential and thermale energy D kinetic and chemical energy
Answers
Answer:
A
Explanation:
The formula for mechanical energy is mechanical energy = kinetic energy + potential energy.
What’s the answer to this problem
Answers
Answer:
nothing there is no picture or equation
Fe2+ Cl1- chemical formula
Answers
Answer:
??????????..........
4. A bottle of water at a room temperature of 21.0 C is placed into a refrigerator
with an air temperature of 4.5 C. The thermal energy will move –
O F. from the cooler air to lower the temperature of the water to 4.500
G. in both directions until the temperature is equal in the water and the air
H. from the water to the air until the water temperature is zero degrees Celsius
O J. from the water to the air until the temperature is equal in both
Answers
OF. from the cooler air to lower the temperature of the water to 4.500
what is C2H8 ? please hurry
(CH4=methane)
(C2H2=acetylene)
Answers
Answer:
Carbon carbon | C2H8 - PubChem.
Explanation:
Brainliest plz :)
Answer:
Carbon carbon | C2H8
Explanation:
happy to help
which one of the following molecules would you expect to be polar? a. cbr4 b. scl6 c. cs2 ascl3 d. becl2
Answers
The polarity of a molecule depends on the electronegativity difference between the atoms in the molecule and the molecular geometry.
a. CBr4 (carbon tetrabromide) has a tetrahedral molecular geometry, with four bromine atoms surrounding a central carbon atom. Bromine is more electronegative than carbon, but since the four bromine atoms are arranged symmetrically around the carbon atom, the electronegativity difference cancels out and the molecule is nonpolar.
b. SF6 (sulfur hexafluoride) has an octahedral molecular geometry, with six fluorine atoms surrounding a central sulfur atom. Fluorine is more electronegative than sulfur, but since the six fluorine atoms are arranged symmetrically around the sulfur atom, the electronegativity difference cancels out and the molecule is nonpolar.
c. CS2 (carbon disulfide) has a linear molecular geometry, with two sulfur atoms flanking a central carbon atom. The electronegativity difference between sulfur and carbon is not enough to create a dipole moment in the molecule, and since the molecule is linear and symmetrical, it is nonpolar.
d. AsCl3 (arsenic trichloride) has a trigonal pyramidal molecular geometry, with three chlorine atoms surrounding a central arsenic atom. Arsenic is less electronegative than chlorine, so there is a net dipole moment in the molecule and it is polar.
e. BeCl2 (beryllium chloride) has a linear molecular geometry, with two chlorine atoms flanking a central beryllium atom. Beryllium is less electronegative than chlorine, but since there are no lone pairs on the central atom and the molecule is linear and symmetrical, the electronegativity difference cancels out and the molecule is nonpolar.
Therefore, the polar molecule among the options given is AsCl3.
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when discussing Solutions the amount of solute dissolved in the solvent is important to know as it will affect the colligative properties of a solution a pure illusion prepared by dissolving the maximum amount of solute in a given amount of solvent is best described as
Answers
I hope it helps
thanks you
Protection from infection or toxins is called
Answers
Protection from infection or toxins is generally referred to as immunity.
Immunity refers to the ability of an organism to resist or defend against harmful microorganisms, such as bacteria, viruses, and parasites, as well as toxins and other harmful substances. Immunity can be acquired through various mechanisms, including natural exposure to pathogens, vaccination, or the transfer of antibodies from another individual.
The immune system is a complex network of cells, tissues, and organs that work together to identify and neutralize foreign substances that may harm the body.
The primary components of the immune system include white blood cells (such as B cells, T cells, and natural killer cells), lymph nodes, the spleen, and specialized tissues such as the thymus and bone marrow.
The immune system can be divided into two main categories: innate immunity and adaptive immunity. Innate immunity is the first line of defense against pathogens and involves non-specific responses that are present at birth.
Adaptive immunity, on the other hand, develops over time in response to specific pathogens and provides long-lasting protection through the production of memory cells.
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Can you please help me it’s not a hard question
Answers
Calculate the equilibrium constant at 25 ∘C for the reaction
Co(s) + 2Ag+(aq) → Co2+(aq) + 2Ag(s)
Standard Reduction Potentials at 25 ∘C
Co2+(aq)+2e−→Co(s) E∘= −0.28 V
Ag+(aq)+e−→Ag(s) E∘= 0.80 V
Express your answer using two significant figures.
K = ?
Answers
The equilibrium constant K for the given reaction at 25°C is approximately 2.5 × 10²² with two significant figures.
To calculate the equilibrium constant (K) for the reaction Co(s) + 2Ag⁺(aq) → Co₂⁺(aq) + 2Ag(s) at 25°C, we first determine the standard cell potential (E°) using the given standard reduction potentials.
E°cell = E°cathode - E°anode Since Ag⁺ is being reduced and Co is being oxidized, the equation becomes:
E°cell = 0.80 V - (-0.28 V) = 1.08 V
Next, we use the Nernst equation to find the relationship between E°cell and K:
E°cell = (RT/nF) K R = 8.314 J/(mol K)
T = 298 K (25°C)
n = 2 moles of electrons
F = 96485 C/mol
1.08 V = ((8.314 J/(mol K)) × 298 K) / (2 × 96485 C/mol) × ln K
Solving for K, we get the equilibrium constant:
K ≈ 2.5 × 10²²
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Which of the following is an example of a chemical property of matter?
O ability to melt
O ability to freeze
Oability to react
Oability to break
ITS SCIENCE
Answers
Answer:
C: Ability to react. Sorry if its wrong!
Explanation:
A second concern was discovered when a chemical dosing machine in the bottling line had a minor release during a change out of the chemical dimethyl dicarbonate (DMDC). The employees were evacuated without injury.
These two incidents led the winery to determine the level of risk and potential solutions. A risk assessment team was formed, and an assessment was performed. The team determined that the SO2 and DMDC exposure risks both presented multiple fatality – level risk and required immediate risk treatment.
Management sets the expectations, context, and objectives of the assessment. The risk assessment team was established that included the consultant as facilitator, the winemaker, assistant winemaker, cellar manager, operations manager, bottling
department manager, maintenance manager, and Health and Safety Executive (HSE) manager.
Data were collected regarding the SO2 and DMDC operations, equipment and instruments used, instructions, chemicals, and their SDSs, operator training, procedures, and available incident information. A search for similar events involving SO2 and DMDC were also conducted. Employees were interviewed to learn from their experiences, concerns, and suggestions.
The two procedures were observed to document and understand the sequence of tasks and potential risks associated with tasks. Photographs, tank quantities, room dimensions and configurations, distances to exits, means of egress, and other physical attributes were collected.
After reviewing the information, the potential concerns of fatalities or serious incidents were discussed. Workplace exposures such as pure SO2 releases and DMDC releases which present a potential for fatalities or serious incidents must be given the highest priority and controlled to an acceptable level. As a side note, the consultant explained that unlike like less-serious workplace incident rates, fatality, and serious incident/injury rates have not declined and do require serious attention. FSI exposures that can result in environmental releases, explosions, and disasters have been found to involve some of the following factors (14):
• Unusual and nonroutine work
• Nonproduction tasks
• Facility modification or construction activities
• Shutdowns and startups for repair and maintenance tasks
• Exposure to high-energy sources (e.g. electrical, steam, pneumatic, chemical) • Upsets (situations going from normal to abnormal).
Answers
The risk assessment team, consisting of various members from different departments within the winery, conducted a comprehensive assessment of the potential risks associated with sulfur dioxide (SO2) and dimethyl dicarbonate (DMDC) operations.
Data was collected regarding the equipment, chemicals, procedures, training, incident history, and physical attributes of the workplace. The team also interviewed employees to gather their experiences, concerns, and suggestions.
After reviewing the collected information, the team identified the potential risks of fatalities or serious incidents related to workplace exposures of SO2 and DMDC. These risks were considered of utmost priority and required immediate control to ensure an acceptable level of safety. The consultant highlighted the importance of addressing these serious risks, as fatality and serious incident rates have not shown a decline and demand serious attention.
Factors contributing to the potential for environmental releases, explosions, and disasters were identified, including unusual and nonroutine work, nonproduction tasks, facility modification or construction activities, shutdowns and startups for repair and maintenance tasks, exposure to high-energy sources (such as electrical, steam, pneumatic, chemical), and situations transitioning from normal to abnormal (upsets).
Based on the assessment and the identified risks, it is crucial for the winery to implement effective control measures to minimize the potential for fatalities, serious incidents, and environmental disasters. These measures may include improving procedures, enhancing operator training, implementing stricter safety protocols, and ensuring proper handling and storage of chemicals.
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what is the importance of polar covalent and hydrogen bonds in the structure of water?
Answers
Answer:
Water is a remarkable substance, and its unique properties are largely due to the presence of polar covalent bonds and hydrogen bonds in its structure. These characteristics play a crucial role in the physical and chemical properties of water, making it essential for life as we know it.
Explanation:
The polar covalent bonds in water arise from the unequal sharing of electrons between oxygen and hydrogen atoms. This results in the oxygen atom having a partial negative charge (δ-) and the hydrogen atoms having partial positive charges (δ+). These charges create polarity within the water molecule, leading to the formation of hydrogen bonds.
Hydrogen bonds occur when the partially positive hydrogen atom of one water molecule is attracted to the partially negative oxygen atom of another water molecule. These hydrogen bonds are relatively weak individually, but when present in large numbers, they contribute to the cohesion, surface tension, and high boiling point of water.
The importance of these bonds is manifold. The cohesion between water molecules due to hydrogen bonding enables water to form droplets, have a high surface tension, and flow freely, facilitating transport within organisms and in the environment. Additionally, hydrogen bonding leads to the high specific heat capacity and heat of vaporization of water, making it an effective regulator of temperature in living organisms and ensuring stable environmental conditions.
Furthermore, hydrogen bonds play a crucial role in the unique properties of water as a solvent. The polar nature of water allows it to dissolve a wide range of substances, including ionic compounds and polar molecules, facilitating various biological processes such as nutrient transport and chemical reactions in cells.
Which atom is the largest
K
K+
Ca
Ca2+
Li
Answers
Answer:
pottasium,francium,rubidium,cesium
Answer:
Explanation:
K: 2, 8, 8, 1 but 19p+
K+: 2, 8, 8 but 19p+
Ca: 2, 8, 8, 2 but 20p+
Ca2+, 2, 8, 8 but 20p+
K and Ca are larger than their corresponding ions because of one more energy level, so Li is the smallest.
K and Ca have the same no. of electron shells but K has less p+ than Ca. so the attraction between electron and p+ in K is less than that in Ca. Therefore, K is larger than Ca.
Living sustainably means living on ____—the renewable resources such as plants, animals, soil, clean air, and clean water provided by Earth's natural capital. A. Exponential growth natural income ecosystem services factors of sustainability biodiversity
Answers
Answer:
natural income
Explanation:
Living sustainably in the 21st century means coexisting with the nature. In other words, to live sustainably means to meet the needs of the human without affecting or degrading the mother nature.
In the context, living sustainably means to live from the natural income from the nature's gift to us, using their natural resources and not hurting them or exploiting them. They may be resources from the soil, plants, clean air, animals, nature's clean water,etc.
plz help for braniliest
Answers
Answer: i think b.
Explanation:
the yeastengages in photosynthesis, which produces oxygen gas, bio, quizletquizlet
Answers
The statement “the yeast engages in photosynthesis, which produces oxygen gas” is incorrect. Yeast cells do not engage in photosynthesis to produce oxygen gas.
What is photosynthesis?Photosynthesis is the process by which green plants use sunlight, carbon dioxide, and water to produce glucose (a simple sugar), which serves as food for the plant.
Oxygen is also produced during photosynthesis.Yeast:Yeast is a unicellular fungus that converts sugar into carbon dioxide and alcohol. Yeast cells respire aerobically in the presence of oxygen and anaerobically in the absence of oxygen.
However, yeast cells do not perform photosynthesis. They do not have chloroplasts or pigments that are required for photosynthesis. Therefore, yeast cells cannot produce oxygen gas.Bio quizlet:Quizlet is an online learning platform that allows users to create and share flashcards, study guides, and quizzes.
It is a great resource for studying biology and other subjects. Students can create their own study materials or use existing ones created by other users. Quizlet provides an engaging and interactive way to learn and retain information.
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.help me plz answer it ❤️
Answers
Answer:
A
Explanation:
what is the final concentration of a solution prepared by diluting 5.0 ml of 6.0 m hcl to a final volume of 25.0 ml?
Answers
By applying the dilution equation (C₁V₁ = C₂V₂), we know the final concentration is 1.2 M for solution prepared by diluting 5.0 ml of 6.0 m HCl to a final volume of 25.0 ml.
C₁V₁ = C₂V₂
Where:
C₁ = initial concentration of the solution (6.0 M)
V₁ = initial volume of the solution (5.0 ml)
C₂ = final concentration of the solution (unknown)
V₂ = final volume of the solution (25.0 ml)
Rearranging the equation, we have:
C₂ = (C₁V₁) / V₂
Plugging in the values:
C₂ = (6.0 M * 5.0 ml) / 25.0 ml
C₂ = 1.2 M
The final concentration of the solution prepared by diluting 5.0 ml of 6.0 M HCl to a final volume of 25.0 ml is 1.2 M.
By applying the dilution equation (C₁V₁ = C₂V₂), we can calculate the final concentration (C₂) of the solution. We substitute the given values into the equation and solve for C₂. In this case, the initial concentration (C₁) is 6.0 M, the initial volume (V₁) is 5.0 ml, and the final volume (V₂) is 25.0 ml. After performing the calculation, we find that the final concentration is 1.2 M.
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what is the survival rate of light and dark colored peppered moths
Answers
A dark colored peppered moths has a better survival rate in the forest than a light colored peppered moth due to their color difference which exposes the moths to predators.
Why do color matter in peppered moths?
Peppered moths usually have white with black spots across the wings. Organisms like to camouflage to boost their survival rate as they will be able to blend with the environment in other to evade predators.
The dark colored peppered moths have the ability to evade predators more due to their color, as they can easily blended in with the dark tree trunks and the forest. While the light peppered moths will be easily picked by predators because of their color.
In summary, peppered moths are found in places like the tree trunks, dark forest where they can feed on leaves of some trees. The color of their wings has the ability to boost their survival chances.
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Calculate the number of moles in the following: 2.8 X 10^24 atoms of Cl2
Answers
Answer:
The answer is 4.65 molesExplanation:
To find the number of moles given it's number of entities we use the formula
\(n = \frac{N}{L} \\\)
where n is the number of moles
N is the number of entities
L is the Avogadro's constant which is
6.02 × 10²³ entities
From the question
N = 2.8 × 10²⁴ atoms of Cl2
So we have
\(n = \frac{2.8 \times {10}^{24} }{6.02 \times {10}^{23} } \\ = 4.65116279069...\)
We have the final answer as
4.65 molesHope this helps you