Answers
Answer:
5km/h
Explanation:
Given parameters:
Distance = 7.5km
Time = 1.5h
Unknown:
Average speed = ?
Solution:
Average speed is the distance divided by the time taken.
Average speed = \(\frac{total distance }{time taken}\)
Insert the parameters and solve;
Average speed = \(\frac{7.5}{1.5}\) = 5km/h
Related Questions
What percentage of light hits Earth’s surface directly?
3 percent
5 percent
31 percent
47 percent
Answers
Answer: yall trust me on this one, i took one for the team. The answer is "C" or you can say 31 percent. boys get me 50 thanks.
Explanation:
The percentage of sunlight that hits the Earth's surface directly is 31 percent. The correct option is C.
What is sunlight?Sunlight is the electromagnetic radiation transferred by the sun.
The sun is 93 million away from the earth, so it takes eight and half minutes to reach the sunlight to the earth.
Only 30 to 34 percent of light reaches the earth, and the remaining lights are reflected back by clouds and the earth itself.
Thus, the correct option is C, 31 percent.
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I want a pharmacist technician to help me with a question please
Answers
6. Complete the equation for the dissociation of CdCl2(aq). Omit water from the equation because it is understood to be present.
Answers
The chemical equation for dissociation of cadmium chloride is CdCl₂\(_(aq)\) \(\rightarrow\)Cd\(^+_(aq)\) +2 Cl\(^-\)\(_(aq)\).
What is chemical equation?Chemical equation is a symbolic representation of a chemical reaction which is written in the form of symbols and chemical formulas.The reactants are present on the left hand side while the products are present on the right hand side.
A plus sign is present between reactants and products if they are more than one in any case and an arrow is present pointing towards the product side which indicates the direction of the reaction .There are coefficients present next to the chemical symbols and formulas .
The first chemical equation was put forth by Jean Beguin in 1615.By making use of chemical equations the direction of reaction ,state of reactants and products can be stated. In the chemical equations even the temperature to be maintained and catalyst can be mentioned.
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Question 25 (2 points) ✓ Saved
Consider these three compounds.
I
II
H
III
H
1
H-C-H
H-C-H
ннннн
! ! ! ! !
H-Ċ-Ċ-Ċ-Ċ-Ċ-H
II 1
Η Η Η Η Η
H H
1
1
H-C-C-C-H
HHH
H HH
1
H-C-C-C-C-H
I 1
Η Η Η Η
Which are isomers?
Answers
Answer:
May be its correct bro
Explanation:
take it easy
Jay and Jeff were responsible for recording the class weather data each day in march. What weather instrument, seen here, should they use for measuring the daily wind speed
Answers
Answer:
east
Explanation:
How do particles tend to move in solids?
They vibrate about fixed points.
They move randomly through the solid while remaining in close contact with other particles.
They move in orbits around a center.
They move randomly through the solid and separately from other particles.
Answers
Alka was making tea in a kettle. Suddenly she felt intense heat from the puff of steam gushing out of the spout of the kettle. She wondered whether the temperature of the steam was higher than that of the water boiling in the kettle. Comment. (2)
Answers
It is likely that the temperature of the steam is higher than the temperature of the water boiling in the kettle. The intense heat felt by Alka from the puff of steam supports this observation.
In general, the temperature of steam produced from boiling water is higher than the temperature of the water itself. When water boils, it undergoes a phase change from a liquid to a gas, forming steam.
During this phase change, the water absorbs heat energy from the heat source, such as a stove or electric kettle, and converts it into the latent heat of vaporization.
The boiling point of water is 100 degrees Celsius (212 degrees Fahrenheit) at standard atmospheric pressure. At this temperature, the water molecules have enough energy to overcome the intermolecular forces and transition into the gaseous state.
However, steam is hotter than the boiling point of water because it contains additional heat energy in the form of latent heat. The heat energy absorbed during vaporization is stored as latent heat within the steam. As the steam gushes out of the spout of the kettle, it releases this latent heat energy, which can be felt as intense heat.
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What is the answer to this question?
Answers
Answer:
DUDE ITS THE THIRD ANSWER FROM THE TOP
....... HOPE THIS HELPS ✌
all the questions 1. What contribution did de Broglie make to the development of the modern model of the atom? (A)Observed the effect of bombarding thin gold foil (and other metal foils) with alpha radiation from radioactive substances. 60 m B. Discovery of the nucleus C. Discovered that atoms and molecules emit energy only in certain discrete quantities, or quanta. D. Discovered negatively charged particles by cathode ray tube experiment E. Described the wave properties of particles
Answers
De Broglie contributed to the development of the modern model of atoms by describing the wave properties of particles. Option E.
De Broglie's contribution to atomic theoryLouis de Broglie was a French physicist who made significant contributions to the development of quantum mechanics.
In his doctoral thesis, he proposed that particles, such as electrons, have both particle-like and wave-like properties. This idea became known as wave-particle duality and laid the foundation for the development of the modern model of the atom.
According to de Broglie's theory, particles can exhibit wave-like behavior and have a wavelength that is inversely proportional to their momentum.
This theory was later experimentally confirmed in a series of experiments that demonstrated the diffraction of electrons and other particles.
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What is the concentration of Htions at a pH = 11?
mol/L
What is the concentration of Htions at a pH = 6?
mol/L
How many fewer Htions are there in a solution at a
pH = 11 than in a solution at a pH = 6?
Answers
a) 1 x 10^-11 mol/L
b) 1 x 10^-6 mol/L
c) 1 x 10^-5 fewer H+ ions
Explanation
pH stands for Power of Hydrogen, the more acidic a substance is, the more H+ ions it has rendering the substance acidic. a pH of 1 means the concentration of H+ ions is 1 x 10^-1. A pH of 7 means the concentration of H+ ions is 1 x 10^-7 and so on.
10^-11 has 10^-5 more H+ ions than 10^-6
Hope this helps :)
Copper metal has a face-centered cubic structure with all atoms at lattice points and a density of 8.93 g/cm^3. The edge length of the unit cell is 361.5 pm. Calculate the mass of 1 atom of copper.
Answers
The mass of 1 atom of copper metal in the given face-centered cubic structure is determined as 1.054 x 10⁻²² g.
Mass of 1 atom of copperThe mass of 1 atom of copper is calculated as follows;
mass of 1 atom of copper = molar mass of copper / Avogadro's number
substitute the value of molar mass of copper and Avogadro's number;
mass of 1 atom of copper = (63.5 g/mol) / (6.023 x 10²³)
mass of 1 atom of copper = 1.054 x 10⁻²² g
Thus, the mass of 1 atom of copper is determined as 1.054 x 10⁻²² g.
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If you have 9.06 x 10^24 molecules of NaNO3, how many grams do you have of NaNO3
Answers
Answer:
Explanation:
1 mol of anything is 6.02 * 10^23 (in this case molecules)
x mol has 9.06 * 10^24 molecules of NaNO3
x * 6.02 * 10^23 = 9.06 * 10^24 * 1 Divide by 6.02 * 10^23
x = 9.06 * 10^24/6.02 * 10^23
x = 1.5 * 10
x = 15 mols of NaNO3
1 mol of NaNO3
Na = 23
N = 14
O3 = 48
Total = 85
1 mol of NaNO3 = 85 grams
15 mols = x Cross Multiply
x = 15 * 85
x = 1275 grams
Note: these numbers are approximate but they are very close. You have to use your own values from your periodic table to find the mass of NaNO3. Your answer will be very close to 85.
Isoniazid is used in the treatment of tuberculosis and multiple sclerosis. Identify each lone pair as either localized or delocalized. Justify your answer in each case.
Answers
Answer:
Please find the complete question and its solution in the attached file:
Explanation:
1 answer
......................................................
Answers
The most accurate statement about signal transmissions among the given options is:
a) All signals in transmission will lose clarity with distance.
When a signal is transmitted over a distance, it can experience various types of degradation or attenuation. Factors such as distance, interference, noise, and the medium through which the signal travels can all contribute to a reduction in the clarity or quality of the signal. This means that as the distance between the source and receiver increases, the signal may become weaker, distorted, or prone to interference, resulting in a loss of clarity.
Humans have 50 pairs of chromosomes true or false
Answers
Answer:
False
Explanation:
humans have 23 pairs
I need a lil help here plzzzzzzzz
Answers
Answer:
The southern hemisphere is currently experiencing "Summer"
Explanation:
The Southern hemisphere is experiencing summer because it is closer to the sun than the Northern Hemisphere and also, direct light is more hotter than indirect light.
So, first, let's try an EXPERIMENT!
Take a VERY bright flashlight or a very small laser that can't harm you or just burn a paper in 1 second.
Then, take a piece of paper, or maybe just your skin, (like your hand) and place it under the light or laser, (for the laser, you should probably take the paper), and place the light source right above your skin, then, after some time, when it gets hot, measure the temperature. (around like 30 seconds later),
Note down the temperature...
Now, do the same thing, accept, do it in a very weird angle, face it towards your paper or hand, but, do it in an angle. More than like 30 degrees. Then, after some time, note down the temperature.
You probably, noticed, that the direct light (the one with the straight light facing your paper or skin, was hotter). Look at the image below, and you can understand better.
So, the same thing applies to the earth. The southern hemisphere in this picture is facing more directly to the sun than the northern hemisphere. That is why your answer is
SUMMERThank you! Please mark me Brianliest!
Remember to have fun, and a nice day!
Answer: summer
Explanation:
What is the molecular formula of a compound given the molar mass of the compound is 34.04 gram and the empirical formula isNH?(A)NHB) N4H4N2H6N2H2
Answers
1) List the known and unknown quantities.
Molar mass: 34.04 g.
Empirical formula: NH.
Molecular formula: unknown.
2) Find the molar mass of the empirical formula.
N: 14.007 g/mol.
H: 1.008 g/mol.
N + H = 14.007 + 1.008 = 15.015 g/mol.
3) Divide the molar mass by the molar mass of the empirical formula
\(X=\frac{34.04}{15.015}\)\(X=2.27\)Multiply the subscripts of the empirical formula by 2.
\(N_2H_2\).
Based on the chemical equation, use the drop-down menu to choose the coefficients that will balance the chemical
equation:
0₂
03
Answers
The balanced chemical equation is 3O₂ (g) --> 2 O₃ (g).
Balanced chemical equationchemical equations represent the chemical reaction between distinct substances. Each element should have an equal amount of atoms on both sides of a balanced chemical equation. As a result, both before and after the reaction, the number of atoms in each element should remain constant.O2 (oxygen gas) is the single reactant and O3 is the only product in the above equation (ozone). We must choose the correct coefficients for each molecule in order to make the number of atoms of each element equal on both sides of the equation in order to balance this equation.learn more about balanced chemical equation here
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The passage's author most vividly conveys the sense that Plumpp's poetry is like music when he
O uses words like "swing," "dance," and "sway" to characterize phrases in Plumpp's poems
O defines Plumpp as "the poet laureate of Chicago jazz and blues"
explains how long Plumpp has been writing about "Chicago jazz giants"
urges people to read Plumpp's poems and listen to the music Plumpp "immortalizes in print"
Answers
It is an amine, and it has less polar nitrogen-hydrogen and oxygen-hydrogen bonds.
A compound's boiling point is a physical characteristic. These intramolecular linkages between the molecules that make up a chemical affect these physical characteristics.
Alcohols and amino acids have the same kind of intermolecular linkages. The hydrogen bond is the name of this kind of bond.
The electrical attraction between a hydrogen atom from one molecule and an electronegative atom from a nearby molecule is known as a hydrogen bond.
The strength of the bond is in the following order: H.....F > H.....O > H......N
The H....N hydrogen bonds exist in amines, whereas the H....O hydrogen bonds exist in alcohols.
Consequently, the alcohol's hydrogen bonds are stronger and it will impart a higher boiling point on the compound.
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Answer:uses world like
Explanation:
what is the geometry of carbonium ion
Answers
Hope this helps :)
Identify which statement about a solution is correct. Group of answer choices The solution has the same physical state as the physical state of the solvent. The solvent is typically the substance present in the lesser amount. Water can only be the solvent, never the solute. The solute is typically the substance present in the greater amount.
Answers
Water can only be the solvent, never the solute is the statement about a solution that is correct.
The solute is the substance that, in general, is found in less quantity and that dissolves in the mixture.The solvent, on the other hand, is the substance that usually appears in greater quantity and where the solute dissolves.The most usual thing is that the solvent is the substance that establishes the physical state of the solution.Water is considered a universal solvent, since it is the liquid that dissolves the most substances, a quality linked to its status as a “polar molecule”, this is due to its ability to form hydrogen bonds with other substances.
Solubility depends on the properties of a solvent that allow it to interact with a solute in a stronger way than the solvent particles do with each other.
In particular, the polar character of water makes it an excellent solvent for polar and ionic solutes, which are called hydrophilic.
Therefore, we can conclude that water can only be the solvent, never the solute is the statement about a solution that is correct.
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what can you say about the acceleration when the pressure decreases from left to right
Answers
When the pressure decreases from left to right, the acceleration also decreases.
What is Acceleration?This is defined as the rate at which velocity changes with time and it has a direct relationship with pressure.
This however means that when pressure decreases there will be a corresponding decrease in acceleration and vice versa.
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Can someone please help me with EARTH SCIENCE, in New York State?! I need you to label each box with a number. it’s called “rock strata correlation practice”. Number 1 would be the oldest when u label it and it’d be at the bottom.
Answers
In the rock strata correlation practice for New York State, you'll need to label each box with a number, with number 1 representing the oldest layer, located at the bottom.
To perform the correlation, start by examining the different rock layers across different locations or outcrops in New York State. Compare the characteristics of these layers, such as their composition, fossil content, and sedimentary structures. Look for similarities and patterns between the layers to determine their correlation. By identifying key markers, such as unique fossils or distinctive sedimentary structures, you can establish relationships between the rock layers at different locations. Remember to consider the principle of superposition, which states that younger rocks are typically found above older rocks unless they have been disturbed by geological processes. Applying these principles will help you accurately correlate the rock strata in New York State.For such more question on rock strata
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The noble gases are the least _____ of any elements on the periodic table. The _____ form acidic compounds with hydrogen. The halogens are the most reactive among all the _____.
Answers
The noble gases are the slight reactive of any elements on the periodic tableland. The nonmetals form acidic compounds with hydrogen. Halogens are the most reactive from nonmetals.
Noble gases are a group of elements that are placed in Group 18 of the periodic table. Noble gases are also called Inert gases. They are very less reactive metals because the valence electrons in the outermost orbital are in a paired state with each other.
Nonmetals are a group that is placed on the right side of the periodic table. They have very low boiling points and low melting points. They are always ready to pair with reactive metals.
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Question 4 (1 point)
If the decomposition of (NH4)2(CO3) is a first-order process with a rate constant of
0.196 s-1, how much ammonium carbonate would remain after 39.0 s, starting from
a concentration of 0.957 M?
Your Answer in units:
Answers
The final concentration of the reactant of a first order reaction can be determined from the rate constant equation. The concentration of ammonium carbonate after 39 s will be 0.003 M.
What is rate constant?Rate constant of a reaction is the rate of reaction when one molar concentration of the reactant is involved in the reaction. The expression for the rate constant k for first order reaction is :
k = 1/t ln (C0/Ct)
Where C0 be the initial concentration and Ct be the concentration after t seconds.
Given that C0 of ammonium nitrate = 0.957 M
rate constant = 0.196 /s
t = 39 s.
The concentration after 39 seconds is calculated as follows:
0.196 /s = 1/39s ln (0.957 M / Ct)
Ct = 0.957 / (ln⁻¹ (0.196 × 39))
= 0.003 M.
Therefore, the concentration of ammonium carbonate after 39 seconds will be 0.003 M.
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HELPPP PLEASEE w/ all
Answers
The covalent bond is present in the compound C₃H₈. The reactant C is 3, product C is 6, reactant H is 8, product H is 10, Reactant O is 2, product O is 9.
What is covalent bond ?
Atoms share electron pair between them in covalent bonds. H-H or C-H are examples of nonpolar covalent bonds between atoms with similar or identical electronegativity, whereas polar covalent bonds are formed when unequal electronegativity is shared between atoms (e.g., H–O).
What is reactant ?
Raw materials known as reactants combine to create products. When the right factors, such as temperature, time, or pressure, come into play, the chemical bonds between the reactants are broken, allowing the atoms to form new bonds that lead to various combinations.
Therefore, covalent bond is present in the compound C₃H₈. The reactant C is 3, product C is 6, reactant H is 8, product H is 10, Reactant O is 2, product O is 9.
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Describe a situation in which you might need to convert the units of a measurement, and what information you would need to do so.
Answers
Converting the units of a measurement is an essential skill that everyone should have. In our daily life, there are numerous situations where we might need to convert the units of measurement. One of the common examples can be when baking. To get the desired outcome, it is crucial to have the right amount of ingredients.
However, the recipe might require a different unit of measurement than what we have in our kitchen. For instance, the recipe might ask for one cup of flour, but we only have grams of flour in our kitchen. Therefore, to follow the recipe and get the desired outcome, we need to convert the grams into cupsAnother example where we might need to convert the units of a measurement is when dealing with currencies. If we are traveling abroad, we might need to convert our home country's currency into the currency of the country we are visiting to know how much it is worth. For instance, if we are from the United States and we are traveling to Mexico, we might need to convert our U.S. dollars to Mexican pesos.To convert the units of a measurement, we need to know the conversion factors. Conversion factors are ratios of two equivalent measures. For instance, to convert grams to cups, we need to know the conversion factor between grams and cups. Similarly, to convert U.S. dollars to Mexican pesos, we need to know the conversion factor between the two currencies. The conversion factor is the information we need to convert the units of a measurement. It is the relationship between the two units of measurements that help us convert them.For such more question on measurement
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What are the amount of moles in 12.15 grams of Magnesium?
Answers
I did moles=mass(g)/A,r
=12.5/24.3 to get that
Rounding 6.42 g to 2 significant figures
Answers
Answer:
6.4
Explanation:
Describe what happens to an object's density as you add heat
Answers
Answer:
the object it becomes less dense.