Answers
The de Broglie wavelength of the bullet traveling at 1649 miles per hour is 1.3 x 10^34 m.
What is de Broglie wavelength?
The wavelength that is associated with an object in relation to its quantum and mass is known as de Broglie wavelength.
The particles de Broglie wavelength is inversely proportional to its force.
de Broglie wavelength is expressed as : ^ = h/mv
Where ^ is wavelength, h is plank constant, m is mass and v is velocity.
1 miles = 1.60934 km
So 1649 miles = 2653.8 km
Then 2653.8 x 1000/ 60x60 = 737.2 ms -1.
The momentum of bullet is p = mv = 0.00693kg x 737.2 ms-1
= 5.109 kg/ms
Now, de Broglie wavelength = h/p = 6.63 x 10^-34 / 5.109 kg/ms
= 1.3 x 10^34 m
Thus, de Broglie wavelength of the bullet traveling at 1649 miles per hour is 1.3 x 10^34 m.
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Related Questions
Which of the following is not a reason why chemical bonds are important
Answers
If your front lawn is 18.0
feet wide and 20.0
feet long, and each square foot of lawn accumulates 1150
new snowflakes every minute, how much snow, in kilograms, accumulates on your lawn per hour? Assume an average snowflake has a mass of 2.00 mg.
Answers
The amount of snow that accumulates on your lawn per hour is 0.828 kg.
What is snow?Snow is said to comprise of individual ice crystals that grow while suspended in the atmosphere usually within clouds and then fall, accumulating on the ground where they undergo further changes.
The area of the lawn as 18.0 feet * 20.0 feet = 360 square feet
360 square feet * 1150 snowflakes/square foot/minute = 414000 snowflakes/hour is the amount of snowflakes that accumulate on the lawn per hour.
We then multiply the number of snowflakes by the mass of each snowflake: 414000 snowflakes * 2.00 mg/snowflake = 828000 mg.
To get the mass in kilograms we calculate that : 828000 mg / 1000000 = 0.828 kg/hour.
In conclusion, the amount of snow that accumulates on your lawn per hour is 0.828 kg.
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GIVING BRAINLIEST!!!!!!!!! (and the rest of my points)
The Himalayan balsam plant makes seeds in pods and releases them when it is ready, while the Surinam toad absorbs its eggs into its own back until they are ready to come out. How are the adaptations of the balsam and the toad similar?
A. They are behaviors that allow the plant and the animal to reproduce through shorter life cycles.
B. They are behaviors that protect the plant and the animal from predators.
C. They are life cycle differences that protect the offspring and help them to survive.
D. They are physical characteristics that allow the offspring to survive in cold weather conditions.
Answers
They are life cycle differences that protect the offspring and help them to survive. The correct option is C.
Life cycle adaptionSome organisms have life cycle features that ensure that their population is perpetuated in subsequent generations.
Such features include ensuring that propagules are only released when they are mature and making sure that eggs are hatched and offspring become viable before they are allowed to move to the environment.
These actions will make sure that the propagules of offspring have what it takes to survive in their new environment.
In other words, these life cycle features are embedded in the genome of organisms as a way to survive the environment.
Thus, the features of the Himalayan balsam plant and that of the Surinam toad are more or less targeted toward the same thing - the survival of their offspring.
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Answer: Option (C) is correct, They are life cycle differences that protect the offspring and help them to survive.
Explanation: Hope it helps!
Good luck!!!
Draw the correct structure(s) for (2R,3S)‑2,3‑dibromobutane. Show stereochemistry clearly. To ensure proper grading, explicitly draw all four groups, including wedge/dash bonds, around a chirality center. Indicate whether the compound(s):_____.a. could exist in an optically active form.b. could exist in optically active form.b. cannot exist in optically active form.c. cannot be determined.
Answers
Answer:
b. cannot exist in optically active form
Explanation:
Stereochemistry is a branch of chemistry that involves the spatial arrangement of the atoms of molecules and studies how this affects the physical and chemical properties of such species.
The correct structure for (2R,3S)‑2,3‑dibromobutane can be seen in the image attached below. Since the compound is a meso compound due to the plane of symmetry. Thus, the compound is achiral. i.e. Compounds that are superimposable on its mirror image. The plane of symmetry is vertical inclined at 90°(i.e. perpendicular) to the page thus goes via the middle of the molecule.
How does the burning of fossil fuels contribute to global warming?
Answers
Answer: The burning of fossil fuels releases carbon dioxide, methane and other greenhouse gases into the atmosphere. These gases trap heat in the atmosphere, leading to a gradual increase in global average temperatures, known as global warming. This phenomenon has serious impacts on our environment and ecosystems, including extreme weather events and rising sea levels.
Pretty easy question if you know science. 20 Points
A piece of nickel at 25 °C is dropped into a glass of water at 25 °C. Which statement is correct?
Heat will flow from the nickel to the water in the glass.
Heat will flow from the water in the glass to the nickel.
There will be no transfer of heat from the nickel to the water in the glass.
The final temperature of water and nickel will be 0 °C.
Answers
Answer:
C.
Explanation:
because the heat From the nickel and the heat from the water are the same.
As a piece of nickel at 25 °C is dropped into a glass of water at 25 °C, there will be no transfer of heat from the nickel to the water in the glass.
To answer the question, we need to know what heat transfer is.
What is heat transfer?This is the flow of heat energy from one body to another over a temperature gradient.
Heat transfer between Nickel at 25 °C and water at 25 °C.
Since a piece of nickel at 25 °C is dropped into a glass of water at 25 °C, there is no temperature gradient, since, both bodies are at the same temperature. Thus, no heat is transferred from the nickel to the water.
So, as a piece of nickel at 25 °C is dropped into a glass of water at 25 °C, there will be no transfer of heat from the nickel to the water in the glass.
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738.90 m has ____ significant figures
Answers
Answer: 4
Explanation: because the zero doesn't count
Gold’s natural state has a definite shape and a definite volume. What is gold’s natural state
Answers
If Gold's natural state has a definite shape and a definite volume, then its natural state is solid.
Elements on the periodic table are arranged?
Answers
Answer:
In atomic number
And size
And nature of each (metal, non, or metalloide)
\(\Large \boxed{\sf by \ their \ properties}\)
Every element has a set of particular characteristics. Each has a unique atomic and mass number because they contain a different ratio of protons and neutrons. The number of protons in an element mirrors the element's atomic number. The mass number equals the sum of the element's protons and neutrons.
According to increasing atomic numbers, chemical elements get organized. Periods and groups are the names of the horizontal rows and vertical columns, respectively. The chemical characteristics of elements within the same group are comparable due to their similar valency and number of outer electrons.
Straw like organ used to intake for and water or dispose of waste
Answers
A tube is the term used to describe the straw-like organ utilized by both plants and animals to consume food and water or to eliminate waste.
What is tube?A hollow, cylindrical structure that is often present in living things is referred to as a tube. Many biological structures, such as blood veins, intestines, respiratory tracts, and the reproductive system, contain tubes. Many biological functions, including the passage of nutrients, the exchange of gases, and the removal of waste materials, depend on tubes.
These tubes are referred to as xylem and phloem in plants. While the phloem moves sugars and other nutrients from the leaves to other parts of the plant, the xylem is in charge of moving water and minerals from the roots to the rest of the plant.
Animals have many species-specific tube-like organs in charge of intake and waste elimination. Mammals, for instance, have a sophisticated digestive system that consists of the anus, esophagus, stomach, and intestines. Together, these organs help the body digest food, extract nutrients, and get rid of waste.
Generally, tubes or channels are essential for both plant and animal life because they let them take in the substances they need and let waste out.
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PLEASE HELP
What is the most reactive metal.
Mn
Al
Ca
K
Answers
Out of all the given metals, K (Potassium) is the most reactive metal.
The reactivity of metal depends upon the ease of losing an electron from the outermost shell of its atom. The ability to lose an electron decides the reactivity of the metal. The more the ability to lose an electron of its atom, the more the reactivity of the metal. It further depends on the atomic radius, shielding effect, and nuclear charge.
Potassium is the most electropositive metal atom and has the minimum ionization enthalpy thus it has a greater tendency to lose an electron which makes it the most reactive metal.
The reactivity series of given metals is as follows:
K > Ca > Al > Mn
Thus, Potassium (K) is the most reactive metal.
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I need help. Look at the pictures.
Answers
Answer:
sorry I would help but I havnt started learning about that yet
Explanation:
I just don't know
Consider the following intermediate chemical equations.
2 equations: first: upper C (s) plus one-half upper O subscript 2 (g) right arrow upper C upper O (g). Second: upper C upper O (g) plus one-half upper O subscript 2 (g) right arrow upper C upper O subscript 2 (g).
When you form the final chemical equation, what should you do with CO?
Answers
The CO gas produced in the first equation is used in the second equation to produce CO2 in the final equation.
In the intermediate equations, solid carbon (C) and molecular oxygen (O2) are transformed into gaseous carbon monoxide (CO), which is then reacted with more oxygen to produce carbon dioxide (CO2).
The final chemical equation can be created by combining the intermediate equations and cancelling out the intermediate reactant and product (CO and O2) to obtain the overall balanced equation for the reaction:
C(g) + O2(s) = CO2 (g)
Thus, the CO generated in the first equation is consumed in the second equation and does not show up in the third and final equation. The two intermediate reactions' combined outcome is represented by the final equation, which only includes the reactants (C and O2) and product (CO2).
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Why does the temperature stop rising while ice melts into water?
A. The temperature does not stop rising.
B. The electrons are increasing in energy levels.
C. Because no more heat is being added to the system.
D. The energy is being absorbed to separate the particles.
Answers
Answer:
When you heat ice, its temperature rises, but as soon as the ice starts to melt, the temperature stays constant until all the ice has melted. This happens because all the heat energy goes into breaking the bonds of the ice's crystal lattice structure.
Explanation:
The temperature stop rising while ice melts into water because, the energy is being absorbed to separate the particles. This is because of latent heat of fusion.
What is latent heat of fusion?The amount of energy needed to convert the solid substance into a liquid substance by modifying its physical effects. It exists also named enthalpy of fusion. When heat exists supplied to ice, it begins melting and heat is used to increase temperature initially. But after the occasional temperature of ice does not vary and the extra heat exists utilized to melt the ice by cracking bonds between crystal lattice of ice.
The temperature stops increasing while the ice melts into the water because the energy exists being absorbed to divide the particles. This exists because of the latent heat of fusion.
Therefore, (D) option is the correct answer.
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When a liquid is heated the average what? Of energy of its particles will increase
Answers
A piece of metal is composed of atoms. Each atom in the metal contains 29 protons. How is the metal classified?
Answers
Answer:
The metal is Copper
Explanation:
Matter is composed of atoms, which is the smallest indivisible particle of an element. The atom of an element consists of three subatomic particles namely: proton, electron and neutron etc.
The proton, which is the positively charged particle, is equal to the electron, which is the negatively charged particle. The proton number of the atom is the ATOMIC NUMBER of an element.
In the periodic table, the element with atomic number 29, which also means proton number 29 is Copper (Cu).
if the volume of a cylinder is 84,300 cubic centimeters then how many millimeters is this equal to
Answers
Answer:
84,300,000
Explanation:
Just multiply it by 1,000. 1cm = 10mm, and a cube is the length to a sort of third degree, so you take the 10 to its third degree as well and multiply it by 1,000, instead of 10 like you would to find how many millimeters were in an amount of centimeters. If that makes sense.
80 POINTS
Someone pls help me out
Answers
2) The heat capacity of aluminum is 219.44 J/mol.°C.
3) a) the experimental ΔHs of ice is -0.154 kJ/mol.
b) too high
How to calculate heat capacity?Calculate the heat released by the aluminum:
q = mcΔT
where q = heat released, m = mass of aluminum, c = specific heat capacity of water and ΔT = change in temperature.
q = (24.7 g) (0.903 J/g°C) (100.0°C - 23.4°C)
q = 18643.26 J
Next, calculate the heat absorbed by the calorimeter:
q = mcΔT
q = (99.5 g + 24.7 g) (15.8 J/°C) (23.4°C - 19.5°C)
q = 4009.92 J
The heat released by the aluminum is equal to the heat absorbed by the calorimeter and water:
18643.26 J = 4009.92 J + q3
where q3 = heat absorbed by the water.
q3 = 14633.34 J
Calculate the molar heat capacity of aluminum:
Cp,m = q3 / (nΔT)
where Cp,m = molar heat capacity, n = number of moles of aluminum, and ΔT = change in temperature.
n = m / M
where m = mass of aluminum and M = molar mass of aluminum (26.98 g/mol).
n = 24.7 g / 26.98 g/mol
n = 0.916 mol
Cp,m = 14633.34 J / (0.916 mol * 76.6°C)
Cp,m = 219.44 J/mol.°C
Therefore, the heat capacity of aluminum is 219.44 J/mol.°C.
3) (a) To calculate the experimental ΔHs of ice, we first need to calculate the heat gained by the water and the heat lost by the ice during the process.
Heat gained by water = mass of water × specific heat capacity of water × change in temperature
= 100.0 g × 4.184 J/g·°C × (-20.1°C)
= -8,423.84 J
Heat lost by ice = mass of ice × heat of fusion of ice
= 25.6 g × 6.01 kJ/mol
= 154.496 J
Since the process is assumed to be adiabatic (no heat exchange with the surroundings), the heat gained by the water must be equal to the heat lost by the ice.
Thus, -8,423.84 J = 154.496 J = -8,269.344 J
The negative sign indicates that the process is exothermic. Therefore, the experimental ΔHs of ice is:
ΔHs = -154.496 J/mol = -0.154 kJ/mol
(b) If the student forgets to include the calorimeter term in the calculation, the calculated ΔHs of ice will be too high. This is because the heat absorbed by the calorimeter during the process is not accounted for, leading to an overestimation of the heat gained by the water and underestimation of the heat lost by the ice.
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A 25 ml sample of 1.2 molar potassium chloride mix with 15 ml of 0.90 molar barium nitrate solution and precipitate reaction occurs twice case LX + BA no3s aqueous bacl2 solid + 2ks what is the practical yield percentage yield mass is 2.45 g
Answers
theoretical yield) × 100%
Percentage yield = (2.45 g / 2.81 g) x
100%
Percentage yield = 87.2%
Therefore, the practical yield percentage yield is 87.2%, and the mass of the BaCI2 produced is 2.81 g.
Moles of KCI = volume (in L) X
concentration
Moles of KCI = (25/1000) L x 1.2 mol/L
= 0.03 mol
Moles of Ba(NO32 = volume (in L) X
concentration
Moles of Ba(NO3)2 = (15/1000) L x
0.90 mol/L = 0.0135 mol
Moles of BaCI2 formed = 0.0135 mol
The molar mass of BaCI2 is 208.23 g/ mol, so the mass of BaCI2 produced is:
Mass of BaCI2 = moles of BaC12 x
molar mass of BaCI2
Mass of BaCI2 = 0.0135 mol x 208.23
g/mol
Mass of BaCI2 = 2.81 g
13) CO2
# of molecules:
# of elements:
# of
Name of element:
atoms:
Total # of atoms:
The #2 is a
coefficient or subscript!
Answers
Answer:
1023 mole or just 1
2 elements
1 atom of carbon and 2 atoms of oxygen
2 I believe
and I think the 2 is a subscript
The graph shows levels of carbon dioxide in Earth's atmosphere over the last 400,000 years.
Which conclusion can you draw from the information shown in the graph?
O Carbon dioxide levels in the past have been as high as they are now.
O Carbon dioxide levels are currently much lower than normal.
O Carbon dioxide levels are always about the same.
O Carbon dioxide levels are currently higher than they have ever been.
Answers
Answer:
d
Explanation:
how many moles is 8.72x10^24 atoms? can you solve the equation too?
Answers
Answer:
14.49 molesExplanation:
To find the number of moles in a substance 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 we have
\(n = \frac{8.72 \times {10}^{24} }{6.02 \times {10}^{23} } \\ = 14.48504...\)
We have the final answer as
14.49 molesHope this helps you
Choose the equation below that is balanced correctly.
S8 +24 028 SO3
S8+ 12 0₂8 SO3
6 S8+8 026 SO3
2 S8 +3 022 SO3
Answers
The balanced equation for the reaction between sulfur (S₈) and oxygen (O₂) to form sulfur trioxide (SO₃) is 2S₈ + 16O₂ → 16SO₃.
What is the balanced chemical equation?Balancing chemical equations involves the addition of stoichiometric coefficients to the reactants and products.
The balanced equation for the reaction between sulfur (S₈) and oxygen (O₂) to form sulfur trioxide (SO₃) is determined as;
2S₈ + 16O₂ → 16SO₃
From the reactants side we can see that sulfur is 16 and also 16 in the product side. The number of oxygen in the reactant side is 32 and also 32 in the product side.
Thus, the balanced equation for the reaction between sulfur (S₈) and oxygen (O₂) to form sulfur trioxide (SO₃) is 2S₈ + 16O₂ → 16SO₃.
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In what way is cellular respiration like breathing?
Answers
Answer:Cellular respiration is not the same as breathing, but they are closely related
Explanation: When you breathe in, you take in the oxygen your cells need for cellular respiration. When you breathe out, you get rid of carbon dioxide that your cells produce during cellular respiration.
A 75 Kg skateboarder is riding downhill, exerting 25 N. What is their acceleration?
Answers
Answer:
The answer is 0.33 m/s²Explanation:
The acceleration of an object given it's mass and the force acting on it can be found by using the formula
\(a = \frac{f}{m} \\ \)
where
m is the mass
f is the force
a is the acceleration
From the question
f = 25 N
m = 75 kg
We have
\(a = \frac{25}{75} = \frac{1}{3} \\ = 0.333333333...\)
We have the final answer as
0.33 m/s²Hope this helps you
how many moles are in 6.7 x 10^25 molecules of H2SO4
Answers
Answer:
\( \huge{ \boxed{111.30 \: \: \text{moles}}}\)
Explanation:
To find the number of moles in a substance given it's number of entities we use the formula
\( \bold{n = \frac{N}{L} \\ }\)
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 = 6.7 × 10²⁵ \( \: H_2SO_4 \: \) molecules
\(n = \frac{6.7 \times {10}^{25} }{6.02 \times {10}^{23} } \\ = 111.2956...\)
We have the final answer as.
111.30 molesPLS HELP ILL GIVE BRAINLIEST
Upload images that have physical and chemical properties
(six physical properties and 2 chemical properties)
Answers
Answer:
Explanation:
I hope this helps
Why is SpaceX likely to succeed in a mission to Mars?
A. It only hires expert NASA employees as its employees.
B. It takes more risks than NASA, which cannot afford them.
C. It is run by Elon Musk, who is determined to get to Mars.
D. It has fewer restrictions than NASA does.
Answers
Answer:
C
Explanation:
It is run by Elon Musk, who is determined to get to Mars.
A patient is prescribed 100.0 mg/day of antibiotic for
2
weeks. The antibiotic is
available in vials that contain 20.0 mg/vial of the drug. How many vials are
necessary for the entire treatment?
Answers
Answer:
70
Explanation:
20 x 5 vials = 100mg
therefore 5 vials required each day.
Two weeks = 14 days
14 days x 5 vials = 70 vials
How many grams of NaCl
Answers
You would recover 36.525g of NaCl after evaporating all of the water.
How to find the how many grams of NaCl that would be recover when all water is evaporated off of this solution?To find the grams of NaCl that would be recovered after evaporating all the water, we can use the following formula:
mass = moles * molar mass
Where:
Moles = Molarity * Volume
Molarity = 0.250 M
Volume = 2500.0 mL = 2.5 L
Molar mass of NaCl = 58.44 g/mol
mass = 0.250 M * 2.5 L * 58.44 g/mol
mass = 36.525 g
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