The number of waves that pass a given point in a certain amount of
time is the waves...
Answer:
100
Explanation:
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you consider starting material a. you know that a can undergo two irreversible reactions as shown in the below reaction coordinate diagram with one reaction pathway labeled in red and one reaction pathway labeled in blue. the red path leads to product b, while the blue path leads to product c. assuming both reaction pathways occur simultaneously in competition with each other, what is the major product, and why?
Product B because it has a lower energy level than Product C's transition state, which leads to Product C.
What are reaction pathways?The series of reactions required to create a desired product are described by a reaction pathway. The distribution strategy for a product is determined by things like percentage yield. Atomic economics. reaction time. is a connected graph with chemical species as its nodes. If a reaction transfers material from one species to the other, an edge unites the two. An vector from reactant toward the product is depicted as the edge.
What role do reactions pathway ?Energy, or ATP, is created by chemical reactions within our cells. All living things require energy to survive, and Adp would be a reactant that fuels a number of other chemical reactions inside cells. Cells generate energy through a process called cellular respiration.
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The 1H nucleus is composed of a single proton and therefore has a relative mass loss of 0 g/mol. Select the isotope deuterium, 2H. What is the relative mass loss of deuterium, 2H, in g/mol?
The nucleus of 1H is made up of a single proton and therefore has a relative mass loss of 0 g/mol. The deuterium isotope, 2H, on the other hand, has a relative mass loss of 2.014 g/mol. The mass number of 2H is two, indicating that it has one neutron and one proton in its nucleus. Let's look at some additional detail about isotopes: A given element has the same number of protons, but it can have different numbers of neutrons in its nucleus.
A different isotope of the same element is formed by adding or subtracting neutrons from the nucleus. Isotopes of the same element have the same number of protons but a different number of neutrons. The atomic mass of an element is calculated by summing the number of protons and neutrons in the nucleus. The atomic mass unit (amu) is the unit used to calculate atomic mass. In conclusion, The relative atomic mass of 2H is 2.014 g/mol, which is a loss of 0.014 g/mol relative to the mass of 2 protons. The relative mass loss of deuterium, 2H, is 0.014 g/mol.
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A gas is contained in a cylinder with a volume of 4.3 L at a temperature of 30.3oC and a pressure of 766.9 torr. The gas is then compressed to a volume of 0.38 L, and the temperature is raised to 839.0oC. What is the new pressure of the gas? Express your answer in atmospheres (atm)
The ideal gas law can be used to determine the gas's new pressure. According to the ideal gas law, pressure times volume equals the amount of a gas in moles times the global gas constant times the temperature.
Pressure = (number of moles of gas times the universal gas constant times the temperature) divided by volume is the new equation we may use to calculate pressure.
Since there are an equal amount of moles of gas in this situation, we can use the following formula to determine the new gas pressure: Pressure is equal to (4.3 L times 839.0oC) divided by (766.9 torr times 0.38 L). We obtain a new pressure of 118.6 atm by simplifying.
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Hydrochloric acid (HCI) breaks down into hydrogen gas and chlorine gas according to the reaction:
2 HCI — Cl2 + H2
If 42 grams of HCl reacts, what is the theoretical yield of hydrogen gas produced?
A) 2.32 g
B) 737 g
C) 0.57 g
D) 1.16 g
Answer:
(D)=1.16g
Explanation:
Answer:
D) 1.16 g
I'm not sure about answer ..
Which sequence below represents the proper order of increasing bond strength?A) single < triple < doubleB) none of the aboveC) double < single < tripleD) triple < double < single
The proper order of increasing bond strength is:
D) triple < double < single.
In general, the strength of a chemical bond is determined by the number of bonds between atoms. A triple bond consists of three shared electron pairs and is stronger than a double bond, which consists of two shared electron pairs. Similarly, a double bond is stronger than a single bond, which consists of only one shared electron pair. Therefore, the correct sequence is triple < double < single, as stated in option D.
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A sample of argon has a volume of 1.20 L at STP. If the temperature is increased to 22.0 °C and the pressure is lowered to 0.800 atm, what will the new volume be, in L?
It would now be 1.62 L in volume.
How many liters are there in a mole?At Standard Temperature and Pressure, 1 mole of any gas will occupy 22.4 L of space (STP). The volume or mass of gas consumed or produced in a chemical reaction can be calculated using the Ideal Gas Law and a balanced chemical equation. At STP, one mole of oxygen gas takes up 22.4 l of space.
stp is equal to 0 C, or 273.15 K, and 1 atm of pressure.
22 degrees C is 295.15 K
To calculate v2, use the combined gas law formula.
v2=p1(v1)(t2)/p2(t1)
v2=1atm(1.2L)(295.15)/0.8atm(273.15K)
v2=1.62
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5. When a solid is heated up and turns into
a liquid, it
Answer:
Explanation:
When it cools it turns back into a solid
Answer:
When a solid is heated the particles gain energy and start to vibrate faster and faster. At this point, the solid is melting to form a liquid.
Explanation:
The particles in the liquid are the same as in the solid but they have more energy.
9. In terms of Material Sustainability Attribute what HPD stands for? 10. What VOC stands for in terms of sustainability? 11. Single attribute product sustainability attributes are assessed for particular issues such as: a. thermal performance b. emission of VOCs, c. energy performance d. total cost of the building e. a,bc 12. International Green Construction Code a. Developed by ICC in response to demand and initiatives such as LEED. b. Baseline code as opposed to a multi-tiered rating system. c. Applies primarily to non-residential building. d. Newly developed and not yet widely adopted, and has some conflicts with the LEED certification process. e. All of the above 13. Lumber applies to wood products derived directly from logs through sawing and planning operations with no other manufacturing except cutting to length. True False 14. The terms lumber, solid lumber, solid sawn lumber, and sawn lumber are synonymous. True False 15. Wood compare with other structural materials a. Low strength per weight ratio b. High strength per weight ratio 16. Wood is much stronger by weight than concrete. True False 17. Concentric annual rings are visible in the vertical section of a tree and provide a good estimation of the age of the tree True False
9. In terms of Material Sustainability Attribute HPD gives information about a product's content, any potential health hazards associated with the product, and the safe handling and disposal of the product.
10. In terms of sustainability, VOC gives information about chemicals emitted by building materials and finishes that can cause negative health effects for people and contribute to air pollution.
11. Single attribute product sustainability attributes are assessed for particular issues such as emission of VOCs, thermal performance, and energy performance. Thus, option E. (a, b, c) is correct.
12. International Green Construction Code is developed by ICC (International Code Council) in response: all of the above is the correct answer (Option E).
13. The statement "lumber applies to wood products derived directly from logs through sawing and planning operations with no other manufacturing except cutting to length" is true.
14. The statement "the terms lumber, solid lumber, solid sawn lumber, and sawn lumber are synonymous" is true.
15. Wood is known for its high strength-per-weight ratio as compared to other structural materials. (Option B).
16. The statement "Wood is much stronger by weight than concrete" is false because wood is less strong by weight than concrete.
17. The statement "Concentric annual rings are visible in the vertical section of a tree and provide a good estimation of the age of the tree" is true.
HPD stands for Health Product Declaration. In terms of Material Sustainability Attribute HPD gives information about a product's content, any potential health hazards associated with the product, and the safe handling and disposal of the product. VOC stands for Volatile Organic Compounds. In terms of sustainability, VOC gives information about chemicals emitted by building materials and finishes that can cause negative health effects for people and contribute to air pollution.
International Green Construction Code is developed by ICC (International Code Council) in response to demand and initiatives such as LEED. It is a baseline code as opposed to a multi-tiered rating system. It applies primarily to non-residential buildings. It is newly developed and not yet widely adopted and has some conflicts with the LEED certification process.
Thus, the correct answer is
11. E
12. E
13. True
14. True
15. B
16. False
17. True
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How would you express .002 molecules of CO2 per hundred molecules of air as a concentration? -20 parts per hundred thousand -20 parts per million -2 parts per thousand -2 parts per million
According to the concept of significant figures,0.002 molecules of CO₂ per hundred molecules of air are expressed as a concentration as 2 parts per thousand .
What are significant figures?Significant figures are used for establishment of a number which is presented in the form of digits. These digits give a meaningful representation to the numbers.
The significant figures are the significant digits which convey the meaning according to the accuracy. These provide precision to the numbers and hence are called as significant numbers.There are rules for counting significant figures which are as follows:
1)All non-zero digits are significant .
2)All zeroes which occur between non-zero digits are significant.
3)All zeroes to the left and right of a non-zero digit are not significant.
4) All zeroes on right of decimal are significant if a non-zero number follows them.
5)All zeroes on right side of non-zero digit are significant.
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Help me please!!!!!!!!?????
Answer:
i believe its A or D
Explanation:
sorry is its wrong
hope it helps
When you boil a pot of liquid water, the water turns to steam and rises in the air. This is an example of what.
A: condensation
B: precipitation
C: evaporation
D: absorption
Answer:
Hello There!!
Explanation:
The answer is C: evaporation because evaporation is the process in which a liquid boils then evaporates and lastly becomes a gas.
hope this helps,have a great day!!
~Pinky~
According to the forces of attraction, when you boil a pot of liquid water, the water turns to steam and rises in the air. This is an example of evaporation.
What are forces of attraction?
Forces of attraction is a force by which atoms in a molecule combine. it is basically an attractive force in nature. It can act between an ion and an atom as well.It varies for different states of matter that is solids, liquids and gases.
The forces of attraction are maximum in solids as the molecules present in solid are tightly held while it is minimum in gases as the molecules are far apart . The forces of attraction in liquids is intermediate of solids and gases.
The physical properties such as melting point, boiling point, density are all dependent on forces of attraction which exists in the substances.
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The saturation point for a solution is 25.0 grams of solute per 500 grams of solvent. If you pour 50.0 grams of solute into 800. grams of solvent, how many grams of
solute are in solution?
Plz help me!!
Answer:
I think 50 grams only because you have pour 50 grams of solute in to 800 grams of solvent.
a 25.0ml sqample of 0.125 m puradine is titrated with 0.100m ydrochloric acid. calculate the ph at each volume of added acid
The pH at the equivalence point is 7.0, as the reaction between the acid and puradine produces a neutral solution. To calculate the pH at each volume of added acid, you can use the equation pH = -log[H+].
At the start of the titration, before any acid is added, the pH can be calculated using the initial concentration of the puradine solution, which is 0.125 M.
pH = -log(0.125) = 0.903
As acid is added, the concentration of H+ ions increases, leading to a decrease in pH. The volume of acid required to reach the equivalence point can be calculated using the formula:
Macid x Vacid = Mpura x Vpura
Where Macid and Mpura are the molarities of the acid and puradine solutions, respectively, and Vacid and Vpura are the volumes of acid and puradine solutions used.
Once the equivalence point is reached, any additional acid added will lead to a sharp decrease in pH. The pH at the equivalence point is 7.0, as the reaction between the acid and puradine produces a neutral solution.
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Marcus wants to use two objects to compare the sizes of a proton and an electron. If he uses a basketball for a proton, which object would best represent an electron?
A
a pea
B
a bowling ball
C
a soccer ball
D
a beach ball
Answer:
A
Explanation:
Calculate the amount (mL) of Compound A needed to give 12 mmol. MW of Compound A: 32.04 g/mol Density of Compound A: 0.79 g/mL [x1] mL of Compound A equals 12 mmol (HINT: remember significant digits)
we need 487.09 mL of Compound A to obtain 12 mmol,
Determine the mass of 12 mmol of Compound A using its molecular weight:
mass = 12 mmol x 32.04 g/mol = 384.48 g
Use the density of Compound A to convert the mass to volume:
volume = mass / density = 384.48 g / 0.79 g/mL = 487.09 mL
A compound refers to a substance that is composed of two or more different elements chemically bonded together. The atoms of these elements are held together by chemical bonds such as covalent or ionic bonds, forming a distinct and unique chemical entity. Compounds have properties that are different from the elements they are composed of, and their properties are determined by the types of atoms present, the arrangement of atoms, and the strength and type of bonds between the atoms.
For example, water is a compound made up of two hydrogen atoms and one oxygen atom, bonded together by covalent bonds. The properties of water, such as its boiling and freezing points, its density, and its ability to dissolve other substances, are unique to water and are a result of its chemical composition and structure.
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How would life be different if there were 10 hours in a day
Answer:
If there was only 10 hours in a day, including the night time it would be complexly new environment. Say you are up for 7 hours and sleep 3, in those 7 hours you would go to work for probably 4 hours, come home and do stuff for 3 then go to bed and do it all over again.
Use what you know about the orbits of Earth and the moon to sort the phrases into the correct Category.
\(\mathfrak{\huge{\orange{\underline{\underline{AnSwEr:-}}}}}\)
Actually Welcome to the Concept of the Astrophysics.
Let's categorize them eventually ==>
1.) Earth ==> 1.) travels around the Sun
2.) takes 365.25 days .
2.) Moon ===> 1.) travels around the Earth
2.) Takes 27.3 days.
Which atom has the lower K ionization energy? А. Na
B. Be
The atom with the lower K ionization energy is sodium (Na). Here option A is the correct answer.
The ionization energy of an atom is defined as the amount of energy required to remove an electron from the outermost shell of an atom. It is a measure of the tendency of an atom to lose an electron and become a cation. The lower the ionization energy of an atom, the easier it is to remove an electron from that atom.
Now, to compare the ionization energies of Na and Be, we can look at their electronic configurations. Sodium (Na) has an electron configuration of [Ne] 3s¹, while Beryllium (Be) has an electron configuration of [He] 2s².
The first ionization energy of sodium is 495.8 kJ/mol, which means it takes this much energy to remove the outermost electron from a sodium atom. On the other hand, the first ionization energy of beryllium is 899.5 kJ/mol, which is significantly higher than that of sodium. This means that it takes more energy to remove an electron from beryllium than from sodium.
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Zinc is most readily found in protein-rich foods such as shellfish, meats, poultry, and dairy products. Vegetarian sources such as legumes and whole grains offer zinc; however, their ______A. OxylateB PhytateC fiberD. Nitrigen
Answer: phytate i believe is the answer
Noble gasses are generally
Noble gases have completely filled electronic configuration. Therefore, noble gases or group 18 elements are inert in nature.
What are noble gases?Noble gases are 18th group elements in periodic table. They are all having complete filled electronic configuration. The group members are helium, neon, argon, krypton, xenon and radon.
All these elements are existing in gaseous state and they are unreactive. Atoms become reactive when they have extra electrons or are deficient of electrons. Thus to achieve octet, they bond with other atoms.
In the case of noble gases, the valence shell is already achieved octet and no need of lose or gain of electrons. Thus, they are generally inert.
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on the basis of the information above, which of the following arranges the binary compounds in order of increasing bond polarity
Taking into account the data in the table, the binary compounds are arranged in ascending order of bond polarity as follows:
CH4 < SIC14 < SF4
What is Bond polarity ?When there is a significant variation in the electronegativity of the atoms, the bond is said to be polar.
If we examine the variations in electronegativity between the atoms, we find that;
C - H = 2.5 - 2.1 = 0.4
Si - CI = 3.0 - 1.8 = 1.2
S - F = 4.0 - 2.5 = 1.5
We may observe that the biggest difference in electronegativity and
The Si-CI bond has the second-highest polarity, the S-F bond has the highest polarity, and the CH bond has the lowest electronegativity difference and polarity.
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Differentiate between physical and chemical change
Explanation:
Physical Change is a type of change where by no new chemical substance is formed. Physical changes are reversible. whilst Chemical change is a change where new chemical substance is always formed. Chemical changes are usually irreversible.
Examples of Physical Change include;
Melting of Ice
Melting of Candle
Grinding of chalk
Magnetization of Iron
Examples of Chemical Change includes;
Cooking of food
Rusting of Iron
Burning of Charcoal
A less common type of radioactive emitted is the positron. If potassium-38 forms argon-38 by positron emission, the mass number of a positron is ____ and the charge is ____
A positron forms in the nucleus and is promptly ejected from it, just like the beta particle. In an equation, a positron is represented by the sign e+01. As an illustration, potassium-38 emits a positron and changes into argon-38.
What is a positron's charge when its mass is ?A positron has an electrical charge of +1, the same mass as an electron, and a spin of 1/2.
Which, if any, of Argon's three isotopes is the most abundant? Argon-36 The atomic mass of argon is 39.948 amu, not argon-38 or argon-40.The three argon (Ar) isotopes that are present in nature are argon-36, argon-38, and argon-40. On the periodic table, argon has an average atomic weight of 39.948 amu.
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Nitric oxide, NO, is made from the oxidation of NH3, and the reaction is represented by the equation:4NH3 + 5O2 → 4NO + 6H2OWhat mass of O2 would be required to react completely with 7.42 g of NH3?
• Molar mass NH3 ,= Molmass of N + ( 3xmol.mass of H ) = ,17 g/mol
,• Molar mass of O2, = 2 x Mol.mass of O = 2*16 = ,32 g/mol
,• Mass of NH3 = 7.42 g
The balanced equation of the chemical reaction:
\(4NH_3+5O_2\Rightarrow4NO+6H_2O\)According to stoichemistry ,
• 4 moles of NH3 reacts with 5 moles of O2
,• 4x17 g of NH3 reacts with 5x32 g of O2
• then , 7.42 g NH3 reacts with x mass of O2
Therefore mass of Oxygen will be :\(\begin{gathered} MassO_2\text{ = }\frac{7.42\cdot\text{ 5 }\cdot32}{4\cdot17} \\ \text{ = }17.45\text{ g } \end{gathered}\)This means that mass of Oxygen required = 17.45 g6.(a) State any two ways by which water gets polluted.
(b) Name the components present in water gas.
(06.04 HC)
Part 1. A chemist reacted 15.0 liters of F2 gas with NaCl in the laboratory to form Cl2 and NaF. Use the ideal gas law equation to determine the mass of NaCl that reacted with F2 at 280. K and 1.50 atm.
F2 + 2NaCl → Cl2 + 2NaF
Part 2. Explain how you would determine the mass of sodium chloride that can react with the same volume of fluorine gas at STP
can someone explain this to me
The mass of sodium chloride at the two parts are mathematically given as
m=10,688.18gmass of Nacl(m)=39.15gWhat is the mass of sodium chloride that can react with the same volume of fluorine gas at STP?Generally, the equation for ideal gas is mathematically given as
PV=nRT
Where the chemical equation is
F2 + 2NaCl → Cl2 + 2NaF
Therefore
1.50x15=m/M *(1.50*0.0821)
1-50 x 15=m/58.5 *(1.50*0.0821)
m=10,688.18g
Part 2
PV=m'/MRT
1*15=m'/58.5*0.0821*273
m'=39.15g
mass of Nacl(m)=m'=39.15g
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1 Suggest a reason for only ‘roughly’ twice as much hydrogen gas being produced at the cathode as oxygen gas at the anode in the electrolysis of water
A reason for only ‘roughly’ twice as much hydrogen gas being produced at the cathode as oxygen gas at the anode in the electrolysis of water is that the number of moles of hydrogen is twice as that of oxygen in the making of water.
Consider the chemical formula of water which is H2O. Based on this chemical formula, we conclude that water is made from two atoms of hydrogen and one atom of oxygen.
When the electrolysis of water occurs, hydrogen and oxygen will separate. Hydrogen will move toward the cathode whereas oxygen will move toward the anode. However, as the number of moles of hydrogen in the making of water is twice as that of oxygen hence, twice as much hydrogen gas will be produced as the cathode.
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EXERCISE 3: WHAT DOES pCO2 CHANGE? - When pCO
2
increases, the concentration of total CO
2
dissolved in water - When pCO
2
increases, the concentration of only CO
2
dissolved in water - When pCO
2
increases, the pH - Which form of dissolved CO
2
is most common in water? Ocean acidification is the decrease in pH due to increasing atmospheric CO
2
concentration.
2
. Choose the correct word option in the statements below: - An organism that needs CO
2
is likely to fare better / worse under ocean acidification. - An organism that needs HCO
3
- is likely to fare better/worse under ocean acidification. - An organism that needs CO
3
2−
is likely to fare better/worse under ocean acidification.
pCO2 is an important factor that affects various aspects of water chemistry and the impacts of ocean acidification. When pCO2 increases, the concentration of total CO2 dissolved in water also increases. This leads to changes in pH, which decreases due to increasing atmospheric CO2 concentration.
When pCO2 rises, the concentration of only CO2 dissolved in water increases. The dissolved CO2 forms carbonic acid, which contributes to the acidification of the ocean. This increase in CO2 affects the equilibrium between CO2, HCO3-, and CO3^2-, shifting it towards higher levels of dissolved CO2 and H+ ions, resulting in a lower pH.
In terms of the impacts of ocean acidification on different organisms, the effects can vary depending on their specific needs. An organism that requires CO2 is likely to fare better under ocean acidification since the increase in dissolved CO2 can provide them with a favorable environment. However, organisms that rely on HCO3- or CO3^2- may fare worse under ocean acidification, as the lower pH interferes with the availability of these carbonate ions, which are essential for shell formation and calcification in some marine organisms.
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A customer is traveling to a branch office static ip.
Answer:
A customer is travelling to a branch office, and the network administrator provides her with a static IP address for her laptop
Explanation:
I hope this helps!!!...
Brainliest please???