Molar concentration is defined as the number of moles of solute per liter of solution. To calculate it, use the formula Molar concentration (M) = number of moles of solute / volume of solution (in liters).
Molar concentration is a measure of the amount of a substance (in moles) dissolved in a given volume of solution (in liters). It is defined as the number of moles of solute per liter of solution.
To calculate the molar concentration of a solution, you need to know the number of moles of solute and the volume of the solution. You can then use the formula:
Molar concentration (M) = number of moles of solute / volume of solution (in liters)
The unit of molar concentration is usually expressed as "M" or "mol/L". It is important to note that molar concentration is temperature dependent and can change with changes in temperature.
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The complete question is :
What defines a solution with Molar concentration units and how is it calculated?
The protoplasm of a living cell is made up of nucleus and what ?
Answer:Carbon containg molecules
Explanation:
Protoplasm is made up of necleus and carbon containing molecules
Answer:
Protoplasm is composed of a mixture of small molecules such as ions, amino acids, monosaccharides and water, and macromolecules such as nucleic acids, proteins, lipids and polysaccharides. In eukaryotes the protoplasm surrounding the cell nucleus is known as the cytoplasm and that inside the nucleus as the neoplasm.
Explanation:
Please help!! A lot of points!!
Mistakes to avoid using mean:
Mistakes to avoid using median:
Geologists discover what seems to be a new, powdery substance, deep underground. When they analyze it it's found to contain, amongst other things, potassium and iodine.
Which of the following are ruled out about this substance?
A. It is a mixture
B. It is a compound
C. It has a lattice structure
D. It is made up of molecules
E. It is an element
Answer:
Explanation b:
What is a saturated solution
A. A solution containing more solute than should be possible
B. A solution that cannot dissolve any more solute
C. A solution that is not able to dissolve any of the solute
D. A solution that can still dissolve more solute
What happens to the average speed of gas molecules as the temperature increases? Why?
Answer:
Average speed increases because average kinetic energy increases.
Explanation:
Temperature is the measure of the average kinetic energy of a system. As temperature increases, so will kinetic energy. As kinetic energy increases, speed increases.
Supón que se ha descubierto una nueva especie de organismo. Los científicos observan sus células en un microscopio y determinan que carecen de mitocondrias. ¿Qué tipo de respiración celular crees que cumple la nueva especie? Explica tu respuesta . Un cuerpo humano trabaja en armonía. Desde la célula hasta los sistemas, cada parte cumple una tarea que hace posible el funcionamiento del cuerpo. ¿Qué otro ejemplo puedes encontrar de trabajo en armonía en el funcionamiento de tu cuerpo?
Answer:
Respiración anaerobica
Explicación:
Las nuevas especies carecen de mitocondrias, por lo que realizan respiración anaeróbica porque en las mitocondrias solo ocurre la respiración aeróbica mientras que la respiración anaeróbica ocurre en el citoplasma de la célula. Trabajar en armonía es muy importante para el funcionamiento normal de su cuerpo. Por ejemplo, el funcionamiento combinado del sistema circulatorio y excretor. ambos sistemas hacen su trabajo mutuamente y por eso hay armonía en el cuerpo.
identify the various types of solutions. describe the characteristics of each type of solution
There are several types of solutions, including dilute solutions, concentrated solutions, saturated solutions, unsaturated solutions, and supersaturated solutions. Each type of solution has specific characteristics that distinguish them from one another.
Dilute solutions: These solutions have a small amount of solute dissolved in a larger amount of solvent. They have a low concentration of solute particles. Concentrated solutions: Concentrated solutions have a large amount of solute dissolved in a smaller amount of solvent. They have a high concentration of solute particles. Saturated solutions: Saturated solutions contain the maximum amount of solute that can dissolve in a given amount of solvent at a particular temperature. Any additional solute added will not dissolve. Unsaturated solutions: Unsaturated solutions have not reached their maximum solute capacity and can dissolve more solute. Supersaturated solutions: These solutions contain more solute than what is normally possible at a given temperature. They are achieved by dissolving the solute at a higher temperature and then cooling the solution slowly.
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give reason unit of volume is a derived unit
Answer:
A derived unit is defined as the unit that is created from a product of SI base units. Volume is an example of derived unit because it is not possible to measure volume directly using any measuring device For eg., Volume of water in bucket is can not be measured using rule, or scale, or any other measuring device.
Hence, volume is a derived unit.
Is Zinc sulfide ionic or covalent?
what would be the achievements and challenges of science and technology in the 21st century ?
The 21st century is the century of science and technology, and there have been many significant advancements. However, there have also been some challenges that need to be resolved.
The globe has seen the advent of social media, cellphones, self-driving automobiles, and autonomous flying aircraft since the start of the new millennium. Additionally, advances in energy storage, artificial intelligence, and medical science have been significant.
To conclude, we can say that science and technology are key divers to development, because technological and scientific revolution underpins economic advances improvements in health systems, education and infrastructure. It is really hard to imagine our life without science and technology.
The 21st century's challenges for science
Politicization of research; social and political context; Global issues, responsible science development, a scarcity of resources worldwide, etc.
backing for science.
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What is the maximum mass (in grams) of precipitate that can form when 150.0 mL of 0.0500 M of calcium chloride solution is combined with 22.0 mL of 0.100 M titantium(IV) sulfate
The maximum mass of precipitate that can form is 0.178 grams.
To determine the maximum mass of precipitate that can form, we need to use the concept of stoichiometry and limiting reactants. Firstly, we calculate the moles of calcium chloride and titanium(IV) sulfate using their respective concentrations and volumes:
Moles of calcium chloride = concentration × volume = 0.0500 mol/L × 0.1500 L = 0.00750 mol
Moles of titanium(IV) sulfate = concentration × volume = 0.100 mol/L × 0.0220 L = 0.00220 mol
The balanced chemical equation between calcium chloride (CaCl2) and titanium(IV) sulfate (Ti(SO4)2) is:
CaCl2 + Ti(SO4)2 -> CaSO4 + TiCl4
From the equation, we can see that the mole ratio between calcium chloride and precipitate (calcium sulfate) is 1:1. Therefore, the maximum moles of precipitate that can form is also 0.00750 mol.
Next, we convert the moles of precipitate to grams using the molar mass of calcium sulfate (CaSO4), which is 136.14 g/mol:
Maximum mass of precipitate = moles of precipitate × molar mass = 0.00750 mol × 136.14 g/mol = 0.178 grams
Therefore, the maximum mass of precipitate that can form when 150.0 mL of 0.0500 M calcium chloride solution is combined with 22.0 mL of 0.100 M titanium(IV) sulfate is 0.178 grams.
Learn more about: Stoichiometry
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what is your impression of nuclear power
how to tell the difference between ionic and covalent bonds
Comparing the electronegativities of the two elements is one method of predicting the type of bond that will form between them.
Ionic bonds are produced between atoms of metals and non-metals where the metal loses an electron to complete its octet and the non-metal acquires that electron to complete its octet. Covalent bonds are formed when two atoms share electrons to complete their octets.
Ionic chemicals are bound together by ionic bonds, whereas covalent compounds are held together by strong covalent bonds. While covalent molecules are normally insoluble in water, ionic compounds are. Additionally, covalent molecules are typically more flammable than ionic ones.
If the electronegativity of the two atoms differs by enough to allow one to totally draw an electron away from the other, the connection is ionic.
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PLEASE HELP !!! WILL GIVE BRAINLIEST !!!!
A molecule that has a linear shape has two electron domains around the central atom. How many lone pairs of electrons are present around the central atom? zero one two three
Answer:
zero
Explanation:
You can practice converting between the mass of a solution and mass of solute when the mass percent concentration of a solution is known. The concentration of the KCN solution given in Part A corresponds to a mass percent of 0.208 % . What mass of a 0.208 % KCN solution contains 914 mg of KCN ? Express the mass to three significant figures and include the appropriate units.
The mass of the solution will be 4,394 mg
Mass percentThe mass percent of a component in a solution can be derived as follows:
Mass percent = mass of component/total mass of solution x 100%
In this case, the mass percent of KCN in the solution is 0.208 and the mass of KCN is 914 mg.
The mass of the 0.208% KCN solution will be:
914/0.208 = 4,394 mg
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which of the following statements is false? a. an atom is the smallest unit of an element that still retains the properties of the element. b. atoms of the various elements differ in their number of subatomic particles. c. all atoms of a particular element have the same number of neutrons in their nuclei. d. protons and electrons are electrically charged particles. e. the neutrons and protons present in the nucleus of an atom are almost identical in mass.
When water is lost, but electrolytes are retained, the first thing that happens is that
O both the ECF and the ICF become more dilute.
O there is an increase in the volume of the ECF.
O the osmolarity of the ECF falls.
O osmosis moves water from the ICF to the ECF.
O aldosterone is secreted.
When water is lost, but electrolytes are retained, the first thing that happens is that moves water from the ICF to the ECF.
About Intracellular Fluid (ICF)The fluid inside of cells, also called the cytoplasm or cytosol, makes up about 60% of the water in the human body, totaling about 7 gallons. Organelles like the nucleus, endoplasmic reticulum, mitochondria, lysosomes, and Golgi apparatus are suspended in and supported by the ICF. Also found in the ICF are cellular building blocks like sugars, proteins, carbohydrates, and lipids.
About Extracellular Fluid (ECF)ECFs are any body fluids that are not inside cells. The two main components of ECF are plasma and interstitial fluid (IF). The balance consists of cerebrospinal fluid, lymph, the synovial fluid in the joints, pleural fluid in the pleural cavities (lungs), pericardial fluid around the heart, peritoneal fluid in the peritoneal cavity (abdomen), and the aqueous humor of the eye. In mammals, milk is also considered an extracellular fluid.
The Movement of Solutes Between CompartmentsThe ICF has higher amounts of potassium, phosphate, magnesium, and protein compared to the ECF. The plasma has high concentrations of sodium, chloride, and bicarbonate, but lower levels of protein as compared to the ICF. While water moves passively via osmosis, sodium and potassium ions move in and out of cells using active transport ion pumps. The pumps are powered by adenosine triphosphate (ATP) to provide the energy to move the ions against their concentration gradients (i.e. sodium moves out of the cell and potassium is pumped in) and maintain the gradients inside and outside the cell.
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An earthworm is slithering on a sidewalk towards a grassy lawn which organelles activity contributes most directly to muscle contraction in an earthworm
1.golgi bodies
2. Chloroplasts
3.mitochondria
4. Lysosomes
Answer:
3. Mitochondria
Explanation:
Numerous mitochondria are found in each muscle cell to provide metabolic energy for muscle contraction.
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ethylene is a very combustible gas. write a balanced equation for the complete oxidation reaction that occurs when ethylene (C2H4) burns in air. use the smallest possible integer coefficients.
C²H⁴ + 3O² --> 2CO² + 2H²O
The balanced equation for the complete oxidation reaction that occurs when ethylene (C2H4) burns in air is: C2H4 + 3 O2 → 2 CO2 + 2 H2O. In this balanced equation, one molecule of ethylene reacts with three molecules of oxygen to produce two molecules of carbon dioxide and two molecules of water. The coefficients are the smallest possible integers for this reaction.
This reaction shows that when ethylene is burned in the presence of oxygen, it reacts to produce carbon dioxide (CO2) and water (H2O) as the products. The coefficients are the smallest possible integers, as required. This reaction releases a large amount of energy in the form of heat and light, which makes ethylene a very combustible gas. The complete oxidation of ethylene is an exothermic reaction, meaning it releases heat. The reaction is also highly exergonic, meaning that it releases energy that can be harnessed to do useful work. In summary, the balanced equation for the complete oxidation of ethylene is C2H4 + 3 O2 → 2 CO2 + 2 H2O. This reaction releases energy in the form of heat and light and is highly exergonic.
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in an ideal solution of a strong electrolyte, the van't hoff factor i is equal to _____.
"the number of ions produced by one formula unit of the electrolyte," refers to the van't Hoff factor (i) in an ideal solution of a strong electrolyte. It represents the extent of dissociation of the electrolyte into ions.
In an ideal solution of a strong electrolyte, the van't Hoff factor (i) represents the number of ions that are produced when one formula unit of the electrolyte dissociates completely in the solution. It is a measure of the extent of dissociation of the electrolyte.
For example, for a strong electrolyte such as sodium chloride (NaCl), when it dissolves in water, it completely dissociates into sodium ions (Na+) and chloride ions (Cl-). In this case, the van't Hoff factor (i) would be 2 because one formula unit of NaCl produces two ions (Na+ and Cl-).
Similarly, for other strong electrolytes, the van't Hoff factor (i) can be determined based on the number of ions produced per formula unit. It is important to note that for non-electrolytes or weak electrolytes, the van't Hoff factor (i) is typically less than 1, indicating partial dissociation or no dissociation in the solution.
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g The bond-line structure of the compound has a nine-carbon chain, in which C 2, C 6, and C 8 are each bonded to a methyl group, C 3 and C 5 are each bonded to an ethyl group. How many of each type of alkyl substituent is connected to the parent
There are 3 methyl groups and 2 ethyl groups connected to the parent chain.
Given: The bond-line structure of the compound has a nine-carbon chain, in which C 2, C 6, and C 8 are each bonded to a methyl group, C 3 and C 5 are each bonded to an ethyl group.
To find: How many of each type of alkyl substituent is connected to the parent. Bond-line structures are a shorthand representation of a molecule that uses lines to represent covalent bonds and shows each atom’s connection to the molecule. For the given bond-line structure, the parent chain contains nine carbons, and the alkyl substituents are connected as follows: C2, C6, and C8 are each bonded to a methyl group (CH3).C3 and C5 are each bonded to an ethyl group (CH2CH3).Thus, there are three methyl groups and two ethyl groups connected to the parent chain. Therefore, the answer is:There are 3 methyl groups and 2 ethyl groups connected to the parent chain.
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Bleach boils at 101°C. Isopropyl alcohol (rubbing alcohol) boils at 82.5°C. Vinegar boils at 100.6°C. Water boils at 100°C. A student has an unknown clear liquid. She wants to determine what it is, so she decides to boil the liquid and use the boiling point as a means of identification. The liquid starts boiling at 99°C. Based on the boiling points shown, which substance is it?
Answer:
most likely water
Explanation:
most likely it is water, however pressure plays a role, if you are at sea level the boiling point of water is 100°C but if you are on Mt. Everest it is 71°C, assuming she is slightly above sea level it is water.
How much heat must be removed from 357 g of water at 76.9C in order to cool it down to 18.1C?
Answer:
58.8C of heat
Explanation:
76.9C is the current heat temperature, to decrease it to 18.1C we have to subtract the both and later find our answer
what is atomic weight?
Answer: The sum of an atom's protons, neutrons, and electrons, with protons equal to 1 AMU each, and electrons are 0 AMU each.
Explanation: By convention, atomic mass of an element is calculated by adding the masses of it's protons, neutons, and electrons. By definition, protons and neutrons are assigned values of 1 "atomic mass unit," or AMU, each, and electons are so small that they are assigned a value of 0 AMU each. Thus, a carbon 12 isotope atom (6 protons, 6 neutrons, and 6 electrons) would have a total of (6+6+0 =) 12 AMU. Carbon-13 has an additional neutron, so it's mass is (6+7+0)= 13 AMU. Molecules are the sum of each of it's individual atoms.
What is an AMU in actual mass? The definition states that 1 AMU is 1/12 the mass of a sinlge Carbon 12 isotope. By defining it in this manner, independent laboratories can calibrate their own instruments with a universal standard. Yes, even the Klingons can calibrate in their own galaxy, far, far away. For those physicists who know the value of even small amounts of mass, 1 AMU is equal to 1.66054x10^-24 grams. Before you scoff, just be reminded that E=mc^2, so while m, mass, may be small, c^2 (speed of light squared) is very large.
What are all the elements in a column called? NO LOOKING IT UP and if u do put it in ur words
Answer:
There have been seven horizontal rows of elements are called phases in the periodic table of elements. Groups, or families, are called vertical columns of elements. Metals, – anti, and metals are the most common ways of classifying the periodic table.
Explanation:
Write a balanced equation for the transmutation that occurs when a nitrogen-13 nucleus emits a positron.
A.
137N→138O+0−1e
7
13
N
→
8
13
O
+
−
1
0
e
B.
137N→136C+01e
7
13
N
→
6
13
C
+
1
0
e
C.
137N→95B+42He
7
13
N
→
5
9
B
+
2
4
H
e
D.
137N→137N+00γ
7
13
N
→
7
13
N
+
0
0
γ
C is the answer. odoriferous
The chemical environment of protons can be deduced from their chemical shifts. What are the relative chemical shifts of the protons at the labeled positions? [protons that are highly shielded have low delta (chemical shift) values. ] 1) the proton with the lowest delta value (the most shielded) is fill in the blank 1. The proton with the highest delta value (the most deshielded) is fill in the blank 2
The proton with the lowest delta value (the most shielded) is OH, and the proton with the highest delta value (the most deshielded) is HZ.
The chemical shifts of protons are determined by the electronic environment around them. Protons that are in an environment of electron-rich molecules such as aromatic rings, alcohols, and amines tend to have low chemical shifts, while protons in an environment of electron-poor molecules such as carboxylates have higher chemical shifts.
The electronic environment of the protons is also affected by the overall electronegativity of the molecule and the presence of electron-withdrawing or electron-donating groups.
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Use a linear system to balance the chemical equation S
2
O
3
2−
+H
2
O+CrO
4
2−
⟶SO
4
2−
+Cr(OH)
4
2−
+OH
−
The balanced chemical equation using a linear system is:
3S2O32- + 2H2O + CrO42- -> 3SO42- + Cr(OH)42- + 2OH-
To balance the given chemical equation, we can set up a system of linear equations based on the number of atoms of each element on both sides of the equation.
In this case, we have 3 sulfur (S) atoms, 6 oxygen (O) atoms, 4 hydrogen (H) atoms, 1 chromium (Cr) atom, and 4 hydroxide (OH-) ions on the left-hand side. On the right-hand side, we have 3 sulfate (SO42-) ions, 1 chromium hydroxide (Cr(OH)42-) ion, and 2 hydroxide (OH-) ions.
By setting up and solving a system of equations, we can determine the coefficients that balance the equation. The coefficients obtained through the linear system are 3, 2, and 1 for S2O32-, H2O, and CrO42-, respectively, on the left-hand side, and 3, 1, 1 for SO42-, Cr(OH)42-, and OH- ions, respectively, on the right-hand side. This ensures that the number of atoms of each element and the charge is conserved in the balanced equation.
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Properties of Ether that don't make it a good solvent are?
The properties of ether that don't make it a good solvent are low polarity, low boiling point, and undergo autoxidation over time
Ether, specifically diethyl ether, has some characteristics that limit its effectiveness as a solvent. Firstly, ethers have low polarity, which means they cannot dissolve highly polar or ionic compounds effectively, this restricts their use in dissolving substances like salts and some polar organic molecules. Secondly, ethers have a relatively low boiling point (34.6°C for diethyl ether), which can lead to evaporation and loss of solvent during procedures, particularly when heating is involved.
Additionally, their low boiling point makes them highly volatile and prone to forming explosive peroxides upon exposure to air and light, this poses significant safety concerns during storage and use. Lastly, ethers can undergo autoxidation over time, leading to the formation of potentially hazardous peroxides, these peroxides can be explosive and make ethers more dangerous to handle. Due to these limitations in polarity, boiling point, and safety concerns, ethers may not be the best choice as solvents in various applications.
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4) Select all the terms according to the subatomic particle of an electron.
OA) exists in nucleus
OB) negative charge
OC) bound by strong force
OD) moves at extreme speed
Answer:I think it’s B
Explanation:
Answer: A. C. D
Explanation: