Answer:
The given blank can be filled with carbon dioxide.
Explanation:
Carbon dioxide one of the by-products of fermentation is used in the production of carbonated beverages and in manufacturing of bread. In the brewing industry, alcoholic fermentation takes place in which transformation of sugar is done into ethyl alcohol and carbon dioxide. The carbon dioxide, which is the by-product in the process bubbles through the liquid and disperses into the air. The same phenomenon of carbon dioxide is used to cause rising of the bread.
What are the four most common types of materials used to make cooking and baking utensils?
Which is the correct order, from simplest structure to most complex, of these particles?
A. atom, diatomic element, molecule, compound
B. diatomic element, atom, compound, molecule
C. compound, molecule, diatomic element, atom
A. Atom, diatomic element, molecule, compound is the correct order from simplest to most complex structure. Each term represents a different level of molecular complexity in chemistry.
The correct order along with a brief explanation of each term, from the simplest structure to the most complex among the given particles is:
Atom: The basic unit of a chemical element, consisting of protons, neutrons, and electrons. Examples include hydrogen (H) and oxygen (O).Diatomic element: A molecule composed of two atoms of the same element. For instance, O₂ (oxygen) and N₂ (nitrogen).Molecule: A group of two or more atoms bonded together. These can be the same element or different elements, such as O₂ (oxygen) or H₂O (water).Compound: A substance formed when two or more different types of atoms are chemically bonded together. Examples include H₂O (water) and CO₂ (carbon dioxide).Compared with a ph of 7, a solution of ph 5 has what times/fraction of the hydrogen concentration?
A solution with a pH of 5 has 100 times the hydrogen ion concentration compared to a solution with a pH of 7, due to the logarithmic nature of the pH scale.
Explanation:Compared with a pH of 7, a solution of pH 5 has a hydrogen ion concentration that is 100 times greater. The pH scale is logarithmic, meaning that each whole pH unit change corresponds to a tenfold change in hydrogen ion concentration. Therefore, moving from pH 7 to pH 6 increases the hydrogen ion concentration by a factor of 10, and moving again from pH 6 to pH 5 increases it by another factor of 10, thus yielding a total increase by a factor of 100.
Which term represents a chemical reaction?
Chemical equations are symbols and chemical formulas that depict a chemical reaction symbolically.
What is chemical reaction ?In a chemical reaction, one or more substances—also known as reactants—are changed into one or more additional substances—also known as products.
Chemical equations are used to model chemical reactions. To display the same amount of atoms of each element on each side, chemical equations are balanced. The Law of Conservation of Mass, which is found in chemistry, stipulates that matter cannot be created or destroyed.
When an object combines with oxygen gas (O2), a combustion reaction occurs and energy is liberated. There will be a combustion reaction if a sparkler is burned.
Thus, Chemical equations are symbols and chemical formulas that depict a chemical reaction symbolically.
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How many grams of ca(no3)2 can be produced by reacting excess hno3 with 6.33 g of ca(oh)2?
Answer:
Amount of Ca(NO3)2 produced = 14.02 g
Explanation:
The given reaction can be depicted as follows:
Ca(OH)2 + 2HNO3 → Ca(NO3)2 + 2H2O
Since it is given that HNO3 is in excess, the limiting reactant is Ca(OH)2
Now, Mass of Ca(OH)2 = 6.33 g
Molar mass of Ca(OH)2 = 74 g/mol
[tex]Moles\ Ca(OH)2 = \frac{Mass}{Molar\ Mass} = \frac{6.33 g}{74 g/mol} =0.0855[/tex]
Based on the reaction stoichiometry:
1 mole of Ca(OH)2 forms 1 mole of Ca(NO3)2
Therefore, moles of Ca(NO3)2 produced from the moles of Ca(OH)2 reacted = 0.0855 moles
Molar mass of Ca(NO3)2 = 164 g/mol
[tex]Mass\ Ca(NO3)2 \ produced = moles*molar\ mass \\= 0.0855\ moles*164\ g/mol = 14.02\ g[/tex]
14.022 grams of Ca(NO₃)₂.
Further explanationGiven:
The reaction between excess HNO₃ with 6.33 g of Ca(OH)₂ produces Ca(NO₃)₂.
Question:
How many grams of Ca(NO₃)₂ can be produced?
The Process:
Step-1
Relative atomic mass: Ca = 40, N = 14, O = 16, and H = 1.Relative molecular mass (Mr) of Ca(OH)₂ = 40 + 2(16 + 1) = 74.Relative molecular mass (Mr) of Ca(NO₃)₂ = 40 + 2[14 + 3(16)] = 164.Let us convert mass to mol of 6.33 g of Ca(OH)₂.
[tex]\boxed{ \ n = \frac{mass}{Mr} \ } \rightarrow \boxed{ \ n = \frac{6.33}{74} = 0.0855 \ moles \ }[/tex]
Step-2
Balanced reaction:
[tex]\boxed{ \ Ca(OH)_2 + 2HNO_3 \rightarrow Ca(NO_3)_2 + 2H_2O\ }[/tex]
Due to excess HNO₃, then Ca(OH)₂ become limiting reagents. The number of moles of Ca(OH)₂ determines the number of moles of Ca(NO₃)₂ as a result.
According to chemical equation above, proportion between Ca(OH)₂ and Ca(NO₃)₂ is 1 to 1. Therefore, we can count the number of moles of Ca(NO₃)₂.
[tex]\boxed{ \ \frac{n(Ca(NO_3)_2)}{n(Ca(OH)_2)} = \frac{1}{1} \ } \rightarrow \boxed{ \ n(Ca(NO_3)_2) = n(Ca(OH)_2) \ }[/tex]
Hence we get 0.0855 moles of Ca(NO₃)₂.
Step-3
Let us convert mol to mass of 0.0855 moles of Ca(NO₃)₂.
[tex]\boxed{ \ n = \frac{mass}{Mr} \ } \rightarrow \boxed{ \ mass = n \times Mr \ }[/tex]
[tex]\boxed{ \ n = 0.0855 \ moles \times 164 \ \frac{g}{mol} \ }[/tex]
Thus, we can produce 14.022 grams of Ca(NO₃)₂.
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A plasma is a high-temperature state of matter where atoms lose electrons, resulting in a mixture of positively charged ions and free electrons. It is commonly found in stars and laboratories.
A high-temperature state of matter in which atoms lose their electrons is known as a plasma. At elevated temperatures, typically in the range of thousands to millions of degrees Celsius, atoms gain enough energy to ionize, leading to the liberation of electrons. In a plasma, the resulting mixture consists of positively charged ions and free electrons, creating a state of matter distinct from solids, liquids, and gases. Plasmas are pervasive in the universe, constituting a significant portion of celestial bodies like stars. On Earth, plasmas are observed in phenomena such as lightning discharges and certain types of flames.
In laboratories, scientists generate plasmas for diverse applications, including fusion research for energy production, industrial processes like plasma cutting and welding, and technologies such as plasma TVs. The unique properties of plasmas, such as conductivity and responsiveness to electromagnetic fields, make them valuable in various scientific and technological domains. Understanding and harnessing the behavior of plasmas contribute to advancements in both fundamental research and practical applications.
What is the largest number that can be added to 6.022x10^23 without changing its displayed value?
A specific isotope of an element is known to have 15 protons and 16 neutrons. which symbol would properly represent this isotope
Final answer:
The isotope with 15 protons and 16 neutrons is represented as ¹31P, where 31 is the mass number and P is the symbol for phosphorus.
Explanation:
The specific isotope in question has 15 protons and 16 neutrons. The element with an atomic number of 15 (number of protons) is phosphorus, symbolized as P. To notate an isotope, we use the element's symbol, with the atomic number as the lower left subscript (often omitted because the element symbol indicates the atomic number) and the mass number as the superscript to the upper left of the symbol. The mass number is the sum of the protons and neutrons. In this case, mass number 31 (15 protons + 16 neutrons). Therefore, the symbol representing this isotope of phosphorus is ¹31P.
Why do two isotopes of an element have the same atomic number but different mass numbers?
Which is a characteristic of the polar water molecule
Water molecules are polar due to an uneven distribution of electrons between oxygen and hydrogen atoms, with oxygen being more electronegative, leading to a partial negative charge, and hydrogen having a partial positive charge.
A characteristic of the polar water molecule is its inherent separation of charge, making it polar. The water molecule has a bent 'V' shape with two hydrogen atoms and one oxygen atom, where the oxygen atom has a higher electronegativity than hydrogen atoms. This means electrons are more strongly attracted to the oxygen nucleus, which makes the oxygen end slightly negative and the hydrogen ends slightly positive. The separation of charge enables water molecules to attract ions, align with external fields, and shield electric fields in biological systems. Moreover, the polar nature of water allows for the formation of hydrogen bonds, contributing to water's unique properties, such as its high boiling point and surface tension.
To calculate density, both _____ must be measured.
length and volume
length and mass
volume and mass
Volume and Mass
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What causes different liquids to form layers when they are poured into a container?
Because of the difference in density between the two liquids, the oil layer sits on top of the water. The density of a substance is the ratio of its mass (weight) to its volume. Because oil is less dense than water, it rises to the surface.
What is density ?The density of a substance is its mass per unit volume. The most common symbol for density is, but the Latin letter D can also be used. Density is defined mathematically as mass divided by volume.
The more dense liquids are also heavier and sink to the bottom, while the least dense liquids rise to the top. The liquids separate into layers due to their different densities.
The forces that exist between liquid particles are weaker than the forces that exist between solid particles. This means that liquid particles are closer together and can move more freely. The liquid can flow and take the shape of its container because the particles can move.
Thus, The density of a substance is the ratio of its mass (weight) to its volume. Because oil is less dense than water, it rises to the surface.
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What material is the buddha statue gautama buddha belum caves?
Dalton's atomic theory explained the observation that the percentage by mass of the elements in a compound is always the same, thus dalton's atomic theory supports what law?
a. the law of definite composition
b. the law of conservation of mass
c. the law of conservation of energy
d. the law of multiple proportions
e. the law of chemical compounds
Answer:
The answer are: a. the law of definite composition; b. the law of conservation of mass; d. the law of multiple proportions
Explanation:
Dalton based his atomic theory on two laws: the law of conservation of mass and the law of definite composition.
The law of conservation of mass says that in a closed system, matter is not created or destroyed. For example, if there is a chemical reaction, the amount of each element of that reaction is the same in the reagents and in the products. While the law of defined composition says that a pure compound will have the same proportion of the elements that make it up. An example, salt, which has a chemical formula NaCl, has the same proportion of sodium and chlorine.
The law of multiple proportions, when two elements come together in different proportions to create different compounds, this means that their atoms come together in different numerical relationships. For example, if an atom of an element A joins with two atoms of element B, the weight ratio of the quantities that bind are in a ratio of 1: 2.
How much water would form if 4.8 grams of hydrogen reacted with 38.4 grams of oxygen?
According to the given reaction equation, 4.8 grams of hydrogen would react with 38.4 grams of oxygen to produce 43.2 grams of water.
Explanation:In this reaction, 2 moles of hydrogen gas (H2) react with 1 mole of oxygen gas (O2) to form 2 moles of water (H2O). To determine the amount of water formed, we need to convert the given masses of hydrogen and oxygen to moles and then use the mole ratio to calculate the moles of water produced.
Atomic mass of hydrogen (H) = 1 g/mol
Atomic mass of oxygen (O) = 16 g/mol
Number of moles of hydrogen (H2) = 4.8 g / 2 g/mol = 2.4 moles
Number of moles of oxygen (O2) = 38.4 g / 32 g/mol = 1.2 moles
According to the balanced equation, 2 moles of hydrogen react with 1 mole of oxygen to form 2 moles of water. Therefore, the number of moles of water formed is also 2.4 moles.
To find the mass of water formed, we can use the molar mass of water:
Molar mass of water (H2O) = 18 g/mol
Mass of water formed = 2.4 moles × 18 g/mol = 43.2 g
Therefore, 43.2 grams of water would form if 4.8 grams of hydrogen reacted with 38.4 grams of oxygen.
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Which of these orbital designations are invalid? 13.2
a. 4s
b. 3f
c. 2d
d. 3d?
The orbital designations 4s, 3f, and 2d are valid, while 3d is not valid.
Explanation:The orbital designations 4s, 3f, and 2d are valid, while 3d is not valid.
The first part of the orbital designation represents the principal quantum number, which indicates the energy level of the electron. The numbers 1, 2, 3, 4, etc. are all valid principal quantum numbers. So the designations 4s, 3f, and 2d are all valid.The second part of the orbital designation represents the shape of the orbital. The letters s, p, d, and f represent different shapes. However, the letter d represents the shape of the d orbital, not the shape of the 2d orbital. Therefore, 2d is an invalid designation.Lastly, the third part of the orbital designation represents the magnetic quantum number, which indicates the orientation of the orbital. The numbers 0, 1, -1, 2, -2, etc., are all valid magnetic quantum numbers. So the designations 4s, 3f, and 3d are all valid.Learn more about Invalid Orbital Designations here:https://brainly.com/question/35869963
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In the context of atomic structure, the invalid orbital designations are 3f and 2d. At the third energy level, 'd' subshell exists but 'f' doesn't. Similarly, at the second energy level, 'd' subshell doesn't exist. Option b and c
Explanation:In quantum mechanics, orbital designations are used to describe the location and properties of electrons within atoms. They consist of a number that represents the energy level of the electron, and a letter that represents the shape of the orbital (subshell).
Each kind of subshell (represented by s, p, d, f, and continuing onwards alphabetically) exists only from a certain energy level onwards.
The 's' subshell exists from energy level 1 onwards, so 4s is valid.
The 'p' subshell exists from energy level 2 onwards.
The 'd' subshell exists from energy level 3 onwards, so 3d is valid.
The 'f' subshell exists from energy level 4 onwards, so 3f is invalid.
Therefore, orbital designations 3f and 2d are invalid because 'f' and 'd' sublevels do not exist at the 3rd and 2nd energy levels, respectively.
Option b and c
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how does the digestion of food involve both physical and chemical change
An element belonging to the halogen family would be expected to have a ________ ionization energy and a ________ electron affinity.
What is an easy way to measure the volume of an oddly shaped solid object?
Which statements about the products of glycolysis is true? (check all that apply)?
Glycolysis produces two ATP, two NADH, and two pyruvate molecules from a single glucose molecule. These pyruvate molecules later enter the citric acid cycle for further processing. Also, glycolysis yields a net gain of two ATP per glucose molecule.
Explanation:The products of glycolysis, a biochemical pathway in cellular respiration, are two ATP molecules, two NADH molecules, and two pyruvate molecules from a single molecule of glucose. Glycolysis begins with the consumption of two ATP for each glucose molecule being broken down but eventually forms four ATP, thus resulting in a net production of two ATP. It does not depend on oxygen, hence occurs both during aerobic and anaerobic respiration. The two pyruvate molecules produced then enter the citric acid cycle (also known as Krebs cycle) for further processing, where they're converted into Acetyl CoA.
Despite a common misconception, the net ATP gain from glycolysis is not zero - while the two ATP are indeed used for transporting the NADH into the mitochondria, this transportation process is considered part of the later stages of respiration, not glycolysis itself. Therefore, it is entirely accurate to say that glycolysis results in a net gain of two ATP molecules per glucose molecule.
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True or false: atoms in each state of matter are always in motion
Which type of rock forms from the fragments of other rocks?
What happens when the electron moves from the first energy level to the second energy level?
Energy is absorbed, and an emission line is produced.
Energy is released, and an emission line is produced.
Energy is absorbed by the atom.
Energy is lost from the atom.
Your answer is: Energy is absorbed by the atom.
this is correct hope it helps:)
Ionic compounds molecules have almost strong forces of attraction between neighboring molecules. Which conclusion could be drawn about materials made up of non-polar molecules?
A) These materials would have low densities as solids.
B) These materials would have very high boiling points.
C) These materials will likely be gases at room temperature.
D) These materials will likely be liquids at room temperature.
The correct answer is B) These materials would have high boiling points.
In forming an ionic bond, two ions with opposite charges have to come together due to the attraction of opposite charges. Ionic compounds have have very strong electrostatic forces of attraction between it's ions. Having strong forces of attraction between compounds means that a lot of energy has to be put in to overcome these attractive forces and break the individual ions apart. This is the reason why ionic compounds have higher boiling points.
In light of this information, we can conclude that B is the correct answer.
Ionization energy is the minimum energy required to remove an electron from an atom in its ground state. It depends on the position of the elements in periodic table. Which of these elements has highest ionization energy? A) B B) C C) F D) Ne
Answer:
D. Ne
Explanation:
Ne Across a period, increasing nuclear charge outweighs the shielding. So the outermost electrons are held more tightly and ionization energy increases as we go across a period. Ne, being placed at the extreme right end of the second period, has the highest ionization energy among the provided options.
1. Describe what is meant by "bridge notation" and explain its value.
This is an essay question.
Calculate the number of moles in each sample. part a 76.1 g h2ccl2
Which properties makes it possible to separate the oxygen and the nitrogen from a sample to liquefied air?
What part of dalton’s atomic theory is disproved by the existence of isotopes?
Write a balanced chemical equation for the photosynthesis reaction in which gaseous carbon dioxide and liquid water react in the presence of chlorophyll to produce aqueous glucose (c6h12o6) and oxygen gas. express your answer as a chemical equation. identify all of the phases in your answer.