In a garden, an earthworm crawled 52 millimeters north in 8.0 seconds at a constant velocity.
While the earthworm was crawling, it was passed by a butterfly flying at 1,500 millimeters
per second. What was the earthworm's velocity?
Write your answer to the tenths place.
Answers
The earthworm's velocity is 6.5 millimeters per second.
To find the earthworm's velocity, we need to divide the displacement by the time taken.
The earthworm crawled 52 millimeters north, which will be considered as the displacement since it is in one direction. The time taken is given as 8.0 seconds.
Velocity = Displacement / Time
Velocity = 52 millimeters / 8.0 seconds
Velocity = 6.5 millimeters per second
So, the earthworm's velocity is 6.5 millimeters per second.
It is worth noting that the butterfly's velocity, which is mentioned in the question, is not relevant to determining the earthworm's velocity. The earthworm's velocity is solely based on its own displacement and time taken. The butterfly's velocity is mentioned to provide additional information but is not necessary for the calculation.
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Related Questions
How many unshared (non-bonded) pairs of
electrons are in NF3?
1. thirteen
2. three
3. two
4. no pairs
5. four
6. ten
7. twenty
8. one
Answers
8. One pair.
because nitrogen has 5 valence electrons, and fluorine has 7, but if there's 3 fluorine atoms, nitrogen shares 1 to each F atom to get it to 8, meaning nitrogen will have a single pair left over since there's no more F atoms to share them with.
Stan gets frustrated while working on his math homework, and he tears his paper into several pieces. What kind of change has his
paper gone through?
Answers
Answer:
Physical Change
Explanation:
What is a physical change? A physical change is a change to the physical—as opposed to chemical—properties of a substance. They are usually reversible. The physical properties of a substance include such characteristics as shape (volume and size), color, texture, flexibility, density, and mass.
please help with chem final need answers within one hour i’ll give brainliest
Answers
Answer:
1. 7
2. 7
3. 16.60
Explanation:
1. 7
3x-3=18
+3 +3
3x=21
/3 /3
x=7
2. 7
4x-5=23
+5. +5
4x=28
/4. /4
x=7
3. 16.60
it reaches above the halfway point after 16, and it's one above it. So, it's 16.60
Please answer today ASAP I need a answer
Answers
Pls I need help. Search the Lewis dot structure for water and ethanol and examine the structures and identify which part is partial negative and partial positive.
Answers
The Lewis dot structure for water is H-O-H. The oxygen atom has a partial negative charge, while the hydrogen atoms have partial positive charges.
What is structure?Structure is the arrangement of components within a system or object. It is the way in which individual parts are organized to form a whole. Structures can be physical, such as a building, or intangible, such as a system of government or an organization. Structures provide an orderly arrangement of components and help to keep the system functioning properly. By designing structures that are efficient, stable, and able to withstand external forces, engineers and architects are able to create safe and reliable structures.
The Lewis dot structure for ethanol is C-H-O-H. The oxygen atom has a partial negative charge, while the carbon and hydrogen atoms have partial positive charges.
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Is SO2 Polar or Nonpolar?
Answers
\(SO_{2}\) (sulfur dioxide) is a polar molecule.
This is because sulfur is more electronegative than oxygen, so the electrons in the S-O bonds are pulled closer to the oxygen atoms, creating a partial negative charge on the oxygen atoms and a partial positive charge on the sulfur atom.
Additionally, the molecular geometry of \(SO_{2}\) is bent, which means the electron distribution is not symmetrical, further reinforcing its polarity.
Polarity is a property of molecules that refers to the distribution of electric charge within the molecule.
A polar molecule has a positive and negative end, meaning the electrons are not evenly distributed around the molecule.
This results in a separation of charge and creates a dipole, with the negative end pointing towards the more electronegative atoms and the positive end pointing towards the less electronegative atoms.
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What are the predominant intermolecular forces in: Kr, CBr4, NaF, CH3OH, and ruby? Then rank by increasing boiling point.
Answers
Answer:
Kr- dispersion forces
CBr4- dispersion forces
CH3OH - dispersion forces, dipole interaction, hydrogen bonding
NaF- ionic
Kr-<CBr4<CH3OH<NaF
Explanation:
The magnitude of intermolecular forces influences the boiling points of substances. The stronger the intermolecular forces the higher the boiling point.
The strongest intermolecular forces here is the Ionic bond hence it accounts for the highest boiling point followed by CH3OH having hydrogen bonding.
Though Krypton and CBr4 both have dipole interaction, the higher relative molecular mass of CBr4 makes it to have a higher boiling point than Kr
When this equation is balanced,
2C4H10 (g) + __O2(g) —> ___CO2 (g) + __H2O (g)
What is the coefficient of oxygen, O2?
Answers
Answer:
The answer is 11Explanation:
2C4H10 (g) + 11O2(g) —> 8CO2 (g) + 6H2O (g)
Hope this helps you
Hope this helps you
Answer:
2C4H10 + 2O2 ---> 8CO2 + 10H2O
Explanation:
which of the following compounds would you expect to be soluble in water? select all that apply: nh4f agcl agno3 mgso4
Answers
The compounds NH4F, AgNO3, and MgSO4 are anticipated to be soluble in water. It is anticipated that AgCl won't dissolve in water.
We need to take into account the solubility laws for common ionic compounds in order to predict which compounds would be soluble in water.
Ammonium fluoride, or NH4F, is a substance that dissolves in water. The majority of ammonium (NH4+) salts, including NH4F, are soluble.
Silver chloride (AgCl) cannot be dissolved in water. Silver chloride is an exception to the rule that most metals' chlorides (Cl-) are soluble.
AgNO3: Water is soluble in silver nitrate (AgNO3). The majority of nitrates (NO3-), including silver nitrate, are soluble.
Magnesium sulphate (MgSO4) is water soluble. Most metal sulphates (SO4-) are soluble, including the sulphate of magnesium.
NH4F, AgNO3, and MgSO4 are examples of soluble substances according to the solubility laws.
AgCl is an insoluble substance.
According to the solubility principles for typical ionic compounds, NH4F, AgNO3, and MgSO4 should all be soluble in water. Contrarily, AgCl is not soluble in water. By taking into account the solubility regulations for each of their individual ions, it is possible to establish these compounds' solubility.
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What is a group 1 metal called?
Answers
The group 1 metals placed in the periodic table is called as the Alkali metals. because of their oxides and the hydroxide form alkaline solution with water.
The group 1 elements called as the alkali metal as their oxides and their hydroxides form the alkaline solution with the water. The alkali metals are given as :
Hydrogen - HLithium - LiSodium - NaPotassium - KRubidium - RbCesium - CsFrancium - FrThese elements are the metals except the hydrogen . the hydrogen element is the non metal nut place in the group 1. the hydrogen is the exception. the alkali metals are very reactive.
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The periodic table's group 1 metals are referred to as alkali metals. due to the formation of an alkaline solution with water by their oxides and hydroxides.
When combined with water, the group 1 elements known as the alkali metals' oxides and hydroxides create an alkaline solution. The following are the alkali metals:
Hydrogen - H
Rubidium - Rb
Lithium - Li
Sodium - Na
Potassium - K
Francium - Fr
Cesium - Cs
With the exception of hydrogen, these elements are all metals. The non-metal spot in group one is occupied by the hydrogen element. The exception is hydrogen. The reactiveness of alkali metals is high. it is due to only 1 electron in the outer most energy shell which is not under high attraction from the nucleus due to shielding effect of inner electrons.
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Which of the following ions could exist in either the high-spin or low-spin state in an octahedral complex?
A. Sc3+
B. Ni2+
C. Mn2+
D. Ti4+
E. Zn2+
Answers
Ni²⁺ is the only ion on the list that can exist as both a high-spin and a low-spin octahedral complex. The correct option is B.
An electrostatic model called the crystal field theory (CFT) assumes that the metal-ligand connection is ionic and results only from electrostatic interactions between the metal ion and the ligand. When dealing with anions, ligands are viewed as point charges, and when dealing with neutral molecules, as dipoles.
The crystal field splitting theory predicts that some transition metal ions can exist as either high-spin or low-spin octahedral complexes, depending on the magnitude of the crystal field splitting parameter (Δ) relative to the pairing energy (P).
Of the ions listed, the only one that could exist as either a high-spin or a low-spin octahedral complex is Ni²⁺ (B).
Mn²⁺ (A) is a d⁵ ion and will always form a high-spin octahedral complex due to its large number of unpaired electrons.
Sc³⁺ (C) is a d⁰ ion and does not form octahedral complexes with ligands.
Cu²⁺ (D) is a d⁹ ion and typically forms a low-spin octahedral complex due to the stability of the half-filled d⁹ configuration.
Zn²⁺ (E) is a d¹⁰ ion and does not have any unpaired electrons to undergo spin pairing, so it will always form a low-spin octahedral complex.
Therefore, the correct answer is B) Ni²⁺.
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When the equation
Na +
H2O → __H, +
NaOH
is correctly balanced using the smallest whole-number coefficients, what is the coefficient for H2O?
Answers
Full equation is
2Na + 2H2O = 2NaOH + H2
The balanced equation is 2Na + 2H\(_2\)O \(\rightarrow\) 2NaOH + H\(_2\) and the coefficient of H\(_2\)O is 2. Stoichiometry represents the number of coefficients.
What is balanced equation?An equation for just a chemical reaction is said to be balanced if both the reactants as well as the products have the same number of atoms and total charge for each component of the reaction. In other words, each sides of both the reaction have an equal balance of mass and charge.
It is typical that balancing chemical formulas for both charge and mass in aqueous solutions. Equal numbers and types of atoms are produced on both aspects of the equation when balancing for mass. When the charge is balanced, there is no net charge on either side of the equation.
The balanced equation can be written as
2Na + 2H\(_2\)O = 2NaOH + H\(_2\)
The coefficient of H\(_2\)O is 2.
Therefore, the balanced equation is 2Na + 2H\(_2\)O \(\rightarrow\) 2NaOH + H\(_2\) and the coefficient of H\(_2\)O is 2.
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you have 50.4 grams of Be how many moles do you have
Answers
To determine the number of moles of Be, we need to divide the given mass by its molar mass.
The atomic mass of Be is 9.012 g/mol.
Number of moles of Be = mass of Be ÷ molar mass of Be
Number of moles of Be = 50.4 g ÷ 9.012 g/mol
Number of moles of Be = 5.592 mol
Therefore, you have 5.592 moles of Be.
Water molecules exhibit cohesive and adhesive properties. What is the chemical bond characteristic that contributes to these and other numerous important properties of water molecules
Answers
Water is an essential element of life, and its structure and function play a crucial role in various biological and physical processes. Water molecules exhibit a range of important properties, including cohesion, adhesion, surface tension, and high specific heat, among others. The cohesive and adhesive properties of water molecules are primarily due to their polar nature and the presence of hydrogen bonds.
Water molecules consist of two hydrogen atoms and one oxygen atom. The hydrogen atoms form covalent bonds with the oxygen atom, sharing electrons to form a molecule. The oxygen atom has a greater electronegativity than the hydrogen atoms, meaning it attracts electrons more strongly, giving the oxygen end of the molecule a partial negative charge and the hydrogen ends a partial positive charge. This results in a polar molecule, with the positive and negative ends separated by a dipole moment. This polarity is essential in creating hydrogen bonds between water molecules.
Hydrogen bonds allow water molecules to exhibit cohesive and adhesive properties. Cohesion refers to the ability of water molecules to stick together, creating surface tension and forming a high surface area. Adhesion refers to the ability of water molecules to stick to other substances, creating wetting and capillary action. These properties are critical in the transport of water in plants and animals, and they help to maintain water balance in cells and tissues. The hydrogen bonding between water molecules also contributes to its high specific heat, which allows it to act as a buffer against temperature changes. In summary, the cohesive and adhesive properties of water molecules are primarily due to their polar nature and the presence of hydrogen bonds.
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A food worker is putting chemicals into clean spray bottles what must the food worker include.
Answers
To prevent mixing up, the food worker must carefully mark the spray bottle with what is inside to assure that accident hapen.
Since chemicals are dangerous, it is best top store them in their own special location and to stay away from sanitizing chemicals when preparing food to prevent contamination.
Chemicals labels must be included on all substances that are poisonous, oxidizing, corrosive, reactive, carcinogenic, or flammable, as well as any liquids or gases that are under pressure, such as liquid nitrogen tanks and compressed air cylinders.
Chemicals should also never be kept close to food or surfaces that come into contact with it. To prevent cross-contamination, the chemical storage space for food workers needs to be isolated from the food storage area. Chemical spills into food are relatively simple to happen if they are stored close to locations where food is prepared.
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What types of elements have atomic radii which remain relatively constant across a period? group of answer choices transition metal elements nonmetal
Answers
"Transition metal elements" are the type of element which have atomic radii which remain relatively constant across a period.
Periods refer to the horizontal lines of the periodic table. Each period represents the sequential occupation of an atom's valence shell orbitals, also with longer periods representing the employment of an atom's d subshell orbitals.
As the atomic number rises, more electrons, as well as protons, are present, increasing attraction over time, which drives the atomic radius to shrink over time.
Therefore, "Transition metal elements" are the type of element which have atomic radii which remain relatively constant across a period.
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One beaker contains a single compound, another an element, another a heterogeneous mixture, and another a homogeneous mixture. Which beaker's content's are a single compound?
Answers
The first beaker will contain a single compound, while another beakers will contains mixture of components.
What is mixture?A mixture is defined as a composition made up of two or more chemical components that do not mix chemically.
It can also be defined as a substance formed by the combination of two or more separate substances that does not result in a chemical reaction.
There are two types of mixture.
Homogenous mixture - It is defined as a combination with the same proportions of its constituents in a given amount of sample. Heterogenous mixture - It is defined as a combination in which the composition varies throughout the solution.Thus, the first beaker will contain a single compound, while another beakers will contains mixture of components.
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What charge (positive, negative, neutral) does the complete atom
have?
Answers
Answer:
The positive charges equal the negative charges, so the atom has no overall charge; it is electrically neutral. Most of an atom's mass is in its nucleus; the mass of an electron is only 1/1836 the mass of the lightest nucleus, that of hydrogen.
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I'll give brainliest. My group has been struggling to answer this. We just need a solid answer with work to pick up our grades at least.
How many grams of Al(OH)3 are produced from 3.00 g of AlCl3 with excess of NaOH?
Answers
Explanation:
here u go the Answer with the working:)
What mass of H2 is needed to react with 8. 75 g of O2 according to the following equation: O2(g) H2(g) → H2O(g)?.
Answers
The mass of hydrogen requires to completely react with 8. 75 g of oxygen is 1 grams.
The balanced chemical equation for the reaction is:
\(\rm O_2\;+\;2\;H_2\;\rightarrow\;2\;H_2O\)
Computation for mass of hydrogen requiredThe moles of substance required and formed in the reaction is given by the stoichiometric coefficient of the balanced chemical equation.
The equation gives, for the complete reaction of 1 moles of oxygen requires, 2 moles of hydrogen.
The mass of oxygen with moles is given as:
\(\rm Mass=Moles\;\times\;Molar\;mass\)
The mass of hydrogen required for 8. 75 g oxygen is:
\(\rm 1\;\times\;32\;g\;O_2=2\;\times\;2\;g\;H_2\\\\8. 75\;g\;O_2=\dfrac{2\;\times\;2\;H_2}{1\;\times\;32\;O_2}\;\times\;8. 75\;g\;H_2 \\\\8. 75\;g\;O_2=1\;g\;H_2\)
The mass of hydrogen requires to completely react with 8. 75 g of oxygen is 1 grams.
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A piece of sodium was cut easily into smaller pieces with a knife. The sodium was added to some water in a trough
The sodium:
.floated
.melated quickly to a silvery ball
.moved on the surface of the water
.fizzed
Answers
Answer:
Melated quickly into a silver ball
Answer:
C. melated quickly to a silvery ball
Explanation:
which is more soluble in an acidic solution than in pure water?
Answers
Answer:
the anion of a salt is able to react with a H+ ion to form a weak acid, it can be removed from the solution by adding an acid. For CuBr adding H+ forms HBr and that is a weak acid; therefore, CuBr is more soluble in acid than in water:
tpt Cell theory has three parts: The cell is the basic unit of life in all living things, all cells come from existing cells, and
Answers
Answer:
All cells come from cells.
Explanation:
Basically meaning that the cells just infinitely reproduce themselves.
The type of substance has a pH lower than 7. They turn litmus paper red. They are sour and sharp-tasting. They react with metals. This type of substance is a...
1. Acid
2.Base
3. Neutral substance
Please help lol
Answers
The answer is Acid
Explanation:
It's acid, because from its definition we can say that acid turns blue litmus paper red, and it is also corrosive and has a sour taste.
Coming to the pH scale, which is a measure of the acidity and alkalinity of s substance.It is said to be acidic between the range of 1 - 6.9 and neutral at 7, and alkaline between the range of 7.1 - 14Qué sucede al disolver una tableta de ALKA-SELTZER en agua caliente?
Answers
Answer:
FREE POINTS CUZ I DON'T UNDERSTAND
Explanation:
Ca is an atom. Why?
Help me asap pleased
Answers
Answer:
It has protons, neutrons and electrons
a btu is defined as the amount of energy required to raise the temperature of one lb of water by one degree celsius t or f
Answers
British thermal units (Btu) are a unit used to measure the amount of heat in fuels or other energy sources.
The amount of heat needed to raise a pound of liquid water's temperature by one degree Fahrenheit at the point where water has its highest density (approximately 39 degrees Fahrenheit).
Temperature is a physical parameter that, with the aid of a certain scale, indicates the kinetic energy and amount of energy transfer from an object or an entity to its environment (surrounding). Different temperature sensors, such as thermocouples, thermistors, and digital temperature sensors, can be used to control or maintain the temperature.
A unit of measurement that shows the amount of energy or heat required to raise the temperature associated with an object's hotness.
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Using the rules of electron configurations is this a valid orbital diagram?
Answers
How long would it take to deposit the mass of the experimental mass gain of cathode from run 1 during the electrolysis of copper if you used a current of 2.50 a? (answer in minutes)
Answers
The mass of an element released during electrolysis is inversely proportional to the amount of electricity flowing through the electrolyte, according to the first law.
Mathematically, this can be expressed as: deposited mass, current, I, and time, t, or deposited mass, It. Where Q=Charge, M=Molarmass, n=nfac. A) M=Qm/Fn, the mass (m) of a substance deposited on the cathode or anode during electrolysis is given. Silver atoms are added to the cathode and subtracted from the anode for each element that circles the external circuit. This indicates that the mass obtained by the cathode is equal to the mass lost by the anode (assuming the silver anode is pure; see below).
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Which of the following will only affect the reaction rate of gases?
A. Concentration
B. Catalyst
C. Pressure
D. Surface area
Answers
Answer:
D. Pressure
Explanation:
The rate of a reaction is defined as the speed at which the reactants are converted into products. Factors influencing the rate of a reaction are concentration, catalyst, temperature, surface area, and pressure, etc.
In case of the reaction rate of gases, pressure will only have its affect as pressure do not have any influence on solid and liquid.
While concentration, surface area and catalyst influence all reaction rates including solid, liquids and gases.
Hence, the correct option is (d) pressure.