If placed into a water-filled overflow, it would displace 18.84 ml.
Why does overflow bother you?Overflowing means to flood something to the point where the liquid spills out the edges. Rivers occasionally exceed their banks after intense downpours, flooding the surrounding area.
Describe density.Density is the measurement of how tightly a substance is packed. It has such definition since it is the mass per unit volume.
Symbol for density: D
Formula for Density: Where is the density, m is the object's mass, and V is its volume, the equation is: = m/V
based on the specified value;
density=65g/ml
mass=1225g
as we know that
D=m/v
so, v=m/d
v=1225/65
=18.84ml
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The approximate diameter of the spherical nucleus of hydrogen-1 atom is 1 x 10-13 cm. estimate the density (g/cm3) of matter in a proton of mass of proton is 1.673 x10-24 g.
The density is 3.193 × 10^15 g/cm3.
Given;
Diameter = 1 x 10-13 cm
Mass = 1.673 x10-24 g
Volume = 4/3πr^3
Volume = 4/3 × 22/7 × (1 × 10^-13 / 2)^3
Volume = 11 × 10^-39 / 21
Density = Mass / Volume
= 1.673 x10-24 / 11 × 10^-39 / 21
Density = 3.193 × 10^15 g/cm3
What is density?
The amount of objects, including people, animals, plants, and other living things, that are present in a region is known as the density. The number of objects is divided by the area to determine density. The number of inhabitants in a nation divided by its size, measured in square kilometers or miles, is the population density of that nation.
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how is an atom formed?
Answer: See below.
Explanation: An atom is made up of protons, neutrons and electrons.
A compound is known to consist of 23.8% carbon, 5.9% hydrogen, and 70.3% chlorine. Find its formula.
how about give me brainliest b ll tt cc hh
How would you prepare 10. 0 ml of a 0. 25% m/v hcl solution if 1% m/v hcl was available? how much 1% m/v hcl is needed? how much distilled water is used?.
To prepare the HCl solution if 1% m/v HCL was available, take 2.5ml of the stock solution and makeup to mark with 7.5 ml of water.
What is HCl?HCl is hydrochloric acid, and it is a highly reactive and strong acid.
Given, the dilution formula
C₁V₁= C₂V₂
C₁ = initial concentration
V₁ = initial volume
C₂ = Final concentration
V₂ = final volume
The values are
C₁ = 1% m/v
V₁ = ?
C₂ = 0.25% m/v
V₂ = 10 ml
V₁ = C₂V₂/C₁
V₁ = 0.25% m/v × 10 ml /1% m/v
V₁ = 2.5 ml
Thus, the amount of HCl is 2.5ml of the stock solution. The amount of water is 7.5 ml of water.
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When using a water-cooled condenser, the water should_____the condenser. to make this happen, the water should flow in at the____and should flow out at the_____.
A water-cooled condenser must have the water flowing over it continuously to function. The water must enter through the bottom port and exit through the top port for this to occur.
What is condenser?
A device or component used to condense vapor into liquid is a condenser (heat transfer). HVAC air coils are an example of specific sorts. Condenser (laboratory), a group of glassware used in laboratories to cool fluids.
The condenser's job is to take the high-pressure gas coming from the compressor and turn it into a liquid. By using the idea that heat will always travel from a warmer to a cooler substance, it accomplishes this.
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What is a feature of object-oriented computing?
sstateless encapsulation of states platform-independentside-effect free
The feature of object-oriented computing is an encapsulation of states. The correct option is b.
What is object-oriented computing?Object-oriented computing, the short form, is OOP. A computer programming paradigm known as object-oriented programming (OOP) arranges the architecture of software around data or objects rather than functions and logic.
An object is a data field with particular characteristics and behavior. It contains data and codes. It is stored in the form of a procedure. Furthermore, it is a programming paradigm.
Thus, the correct option is b. encapsulation of states.
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The atomic number corresponds to the number of ________ in a specific element, while the atomic weight corresponds to the number of ________ in a specific element.
The atomic number and mass number corresponds to the number of electrons and protons in a specific element, while the atomic number and mass number corresponds to the number of nucleons(protons and neutrons) in a specific element.
What is atomic number and mass number?
The number of protons in the nucleus of each element's atoms, represented by the symbol Z, is the element's atomic number. The sum of the protons and neutrons in an element's nucleus is known as the mass number (A).
Thus, atomic no. is the count of electrons or protons in an element whereas, atomic mass or weight refers to the no. of nucleons that is the sum of protons and neutrons in the nucleus of the element.
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What does criteria mean in science?
Answer:
a standard by which something may be judged.
Explanation:
A 59. 4 g sample of the compound x4o6 contains 14. 4 g of oxygen atoms. What is the molar mass of element x?.
The molar mass of element X is 75 g/mol.
m(X₄O₆) = 59.4 g; mass of the compound
m(O) = 14.4 g; mass of oxygen in the compound
n(O) = 14.4 g ÷ 16 g/mol
n(O) = 0.9 mol; amount of oxygen in compound
m(X) = m(X₄O₆) - m(O)
m(X) = 59.4 g - 14.4 g
m(X) = 45.0 g; mass of element X
Ratio of the elements in the compound: n(X) : n(O) = 4 : 6.
n(X) = 0.9 mol × 4 / 6
n(X) = 0.6 mol; amount of element X in the compound
M(X) = m(X) ÷ n(X)
M(X) = 45.0 g ÷ 0.6 mol
M(X) = 75 g/mol; molar mass of element X
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A solution of h2so4(aq) with a molal concentration of 6.80 has a density of 1.318 g/ml. what is the molar concentration of this solution?
The molal concentration of the solution is 5.38 M.
The molal concentration of sulphuric acid = 6.80 m
The density of the solution = 1.318 g/ml
Mass of the sulphuric acid in the solution is,
[tex] = 6.80 \times 9.80[/tex]
[tex] =666.4 \: g[/tex]
The mass of sulphuric acid present in the solution is 666.4 g.
Let the mass of the solvent in which sulphuric acid is dissolved be 1000 grams.
So the total mass of the solution is,
= Mass of solvent + Mass of sulphuric acid
[tex] = 666.4 \: + \: 1000[/tex]
[tex] = 1666.4 \: g[/tex]
The total volume of the solution is,
[tex] = \frac{1666.4 \times 1}{1.318 \times 1000} [/tex]
[tex] = 1.264 \: L[/tex]
The volume of the solution is 1.264 liters.
The molal concentration of this solution is,
[tex] = \frac{6.80}{1.264} [/tex]
[tex] = 5.38 \: M[/tex]
Therefore, the molal concentration of the solution is 5.38 M.
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If you move from the equator to a location in the mid-latitudes, the wintertime average temperature will _____, and the temperature range will _____.
If you progress from the equator to a location within the mid-latitudes, the wintertime average temperature will decrease, and thus the temperature range will increases.
What is the relationship between latitude and temperature?
As latitude increases, the temperature falls, and therefore the other way around. Generally, round the world, it gets warmer towards the equator and cooler towards the poles.
However, other factors could influence the temperature in several locations like altitude, precipitation, and ocean currents
Why is it called latitude?
On a map where north is up, latitudes run laterally (left to right). they're named after the angle created by a line connecting the latitude and the center of the Earth, and therefore the line connecting the equator and the center of the Earth. Latitudes specify the north-south position of a location on the world .
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is gas occupies 733 cm at 10.9 at what temp will it occupy 950 cm
Temperature of gas at volume of 950 cm³ is 368.14K or 94.99⁰c.
Volume is the amount of space a three-dimensional object takes up, expressed in cubic units.units of volume are mL, liter, cm³ or m³.Given,
in this question, volume occupied by gas at 10.9⁰c is 733cm³.
we have to find out temperature at which gas occupies volume of 950 cm³.
First, convert temperature from celcius to Kelvin
10.9⁰c = 10.9 + 273.15 = 284.05 K
By equation or Boyle's Law
P1 x V1 / T1 = P2 x V2 / T2
Pressure is constant here
therefore, V1 / T1 = V2 / T2
here, V1 = 733 cm³
T1 = 284.05 K
V2 = 950 cm³
we have to find out T2
So, 733 / 284.05 = 950 / T2
T2 = 284.05 × 950 / 733 = 368.14 K
= 94. 99⁰c
Therefore the temperature of gas at volume of 950 cm³ is 368.14K or 94.99⁰c.
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Restate how a satellite stays in orbit with your own words, as if you were trying to explain the process to a younger friend or sibling
Satellite stays in orbit because of two factors velocity and gravitational pull of Earth.
A rocket fired from the ground with enough power to leave our atmosphere is used to put satellites into orbit.The satellite is dropped into orbit once the rocket arrives at the predetermined location.A satellite can stay in orbit for hundreds of years if it maintains its initial speed once it separates from the launch vehicle.A satellite keeps its orbit in place by balancing the gravitational pull of Earth with its velocity, which is the speed required to move in a straight line. In order to withstand the stronger gravitational attraction, a satellite must circle at a faster pace as it gets closer to the Earth.In short, they hold their place by locking into speeds that are quick enough to overcome gravity's pull downward.Therefore, Satellite stays in orbit.
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Use the chemical reaction to answer the question.
CaCO3→CO2+CaO
A scientist heats 30 grams of calcium carbonate (CaCO3
) in the chemical reaction shown. What is the total mass of the products?
(1 point)
60 grams
15 grams
30 grams
10 grams
Answer:
Explanation: 15 grams trust me.!!
Determine the excess reactant and calculate the mass of the remaining excess reactant after 20.0 grams of al and 10.0 grams of o2 react.
The reactant in excess is Al (s)
The mass of remaining surplus reactant is 8.76 g
According to question
4 moles of aluminium reacts with 3 moles of oxygen, to make 2 moles of alumina.
Molar mass Al: 26.98 g/m
Molar mass O2: 32.00 g/m
Mass / Molar mass: Moles
20 g Al / 26.98 g/m = 0.741 moles 10 g O2/32.00 g/m 0.312 moles =
Let's find out the limiting reactant and reactant in surplus by rules of three: the 4 moles of Al reacts with 3 moles of O2
0.741 moles of Al reacts with (0.741.3)/4 = 0.555 moles
Now we know that are needed 0.555 moles of O2 to consume all the Al but we only have 0.312 moles of O2.
The O2 is the limiting reactant, so the Al is the reactant in excess.
Let's make another rule of three
3 moles of O2 reacts with 4 moles of Al
0.312 of O2 reacts with (0.312 .4)/3 = 0.416
We need 0.416 moles to consume all the O2 and we have 0.741 moles of Al.
When we use 0.416 moles from 0.741 it remains 0.325
0.325 moles . 26.98 g/m = 8.76 grams
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21. When a sulfur atom reacts with other atoms, electrons in the atom's third energy level are involved. How many such electrons does a sulfur atom have?
The electrons in the atom's third energy level that are involved in chemical reaction are six in number.
How many electrons does sulfur have?
Sulfur is an element that can be found in group sixteen of the periodic table. It has a valency of two because it has six electrons in the outermost shell and shares two more electrons with another element in order to form a covalent bond.
There are three electron shells that could be found in sulfur. The first shell has two electrons, the second shell has eight electrons while the last shell has six electrons.
As such, the electrons in the atom's third energy level that are involved in chemical reaction are six in number.
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An oxygen (o) atom has _____ protons, _____ neutrons, and _____ unfilled electron orbitals.
An oxygen (o) atom has 8 protons, 8 neutrons, and 2 unfilled electron orbitals.
What is electron orbitals?The three-dimensional regions surrounding an atom's nucleus known as electron orbitals are where a certain electron can be found. Two electrons can fit into each orbital.
They go by the name of atomic orbitals too. The number of electrons an atom contains determines the form of its atomic orbitals. The s, p, d, and f orbitals will all be covered in this lesson. Their orbital forms will also be revealed to us.
An orbital is a mathematical function that, according to its precise definition, represents the location of an electron in an atom with a high degree of probability. According to the mathematical function for that orbital, the term "atomic orbital" often refers to the area of space where an electron might be present.
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Which compound would be most easily formulated as an aqueous solution used to quickly provide energy to an athlete?
The compound would be most easily formulated as an aqueous solution used to quickly provide energy to an athlete is carbohydrate.
carbohydrate strategy is used for athletes to maximize the storage of energy , in form of glycogen, in muscles. simple carbohydrates are simple sugar such as fructose and glucose.Every athletes anywhere should consume 3 - 12 gm per kilo weight throughout the day, depending on their training routine.
Carbohydrates provide energy for the body including muscles , brain, nerves and other tissues present in body.thus, carbohydrates acts a master fuel in body.
carbohydrates are used for energy (glucose). athlete drinks contain carbohydrates ans electrolytes.
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what name is given to this molecule? a positively charged molecule. this molecule consists of three hydrogen atoms bonded to an oxygen atom. what name is given to this molecule? a positively charged molecule. this molecule consists of three hydrogen atoms bonded to an oxygen atom. methane hydronium ion water glucose hydroxide ion
Answer:
h20
Explanation:
science, 3 hydrogen and one oxygen make h2o
[tex]H_3O^+[/tex], hydronium ion is the name given to this molecule. Therefore, the correct option is option B among all the given options.
The smallest recognisable unit which which a pure material may be split while retaining its composition and chemical characteristics is a molecule, which is a collection of two or more atoms. Until portions consisting of tiny molecules are reached, the division of a sample for a substance onto progressively smaller parts does not result in a change with respect to its composition as well as its chemical characteristics. [tex]H_3O^+[/tex], hydronium ion is the name given to this molecule.
Therefore, the correct option is option B among all the given options.
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Name the phase change that occurs when a diamond film forms on a surface from gaseous carbon atoms in a vacuum?
Deposition, when a diamond film forms on a surface from gaseous carbon atoms in a vacuum, a gas changes directly into a solid.
What is deposition?Depositions typically take place in attorneys' offices rather than in courtrooms. A court reporter will record the entire deposition word-for-word while the lawyers interrogate the witness, or deponent, about details of the lawsuit and other events.
The reporter is present throughout the session and will create a transcript at a later time. A deposition could also be videotaped. This is typically done when the deponent is so very ill and may not be well enough for trial, or whether the deponent will be out of town or unavailable during trial.
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the rate constant for this first‑order reaction is 0.930 s−10.930 s−1 at 400 ∘c.400 ∘c. a⟶products a⟶products how long, in seconds, would it take for the concentration of aa to decrease from 0.810 m0.810 m to 0.260 m?0.260 m? ????
It would take 1.23 seconds for the concentration of A to decrease from 0.810M to 0.260 M.
Balanced chemical equation: A → product
c₀(A) = 0.810 M; initial concentration of reactant A
c(A) = 0.260 M; concentration of reactant A after time t
k = 0.930 s⁻¹; the rate constant for this first‑order reaction
ln c(A) = ln c₀(A) - k·t; a first-order is proportional to the concentration of the reactant.
t = (ln c₀(A) - ln c(N₂O₅)) ÷ k.
t = (-0.21 + 1.35) ÷ 0.930 s⁻¹.
t = 1.14 ÷ 0.930 s⁻¹
t = 1.23 s; duration of this chemical reaction
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In this lab experiment, you will react copper(ii) chloride and aluminum. you will look for clues as to which substance was in excess and which limited the reaction
How can you identify the reactant that is restricting a chemical reaction while watching it take place? ”
What is the real purpose of scientific study?Building scientific knowledge, or discovering rules and positing ideas that may explain natural or social occurrences, is the aim of scientific study. It is crucial to recognize that this knowledge might be inaccurate or perhaps quite distant from the truth.
An experiment is what?A hypothesis, or an anticipation about how a certain process or phenomena operates, is typically the subject of an experiment. However, an experiment may also seek to address a hypothetical issue or support earlier findings without having any preconceived notions about what would be revealed.
Complete question -
In this lab experiment, you will react copper(ll) chloride and aluminum. You will look for clues as to which substance was in excess and which
limited the reaction. Write an investigative question that describes the
scientific goals of this experiment. Make sure that your question applies to any reaction. Investigative Question:
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In the redox conversion of Cr(OH)4 to
CrO2, the oxidation number of Cr goes from
(-1, 0, +3) to (-2, +6, +8). Recall that the
oxidation number of oxygen is typically -2.
Analyze the diagram showing the changing states of matter. Drag the item from the item bank to its corresponding match.
The correct matches for changes of state are:
1 or 3 : Arrow that shows particles getting closer togethergas: State of matter that would fill any containerliquid: State of matter with definite volume but NOT shape2 or 4: Arrow that shows particles gaining energysolid: State of matter with definite shapeWhat is change of state?Change of state is the process whereby matter in one physical state is converted to matter in another state by the addition or removal of heat.
The process of change of state are:
Melting: solid to liquid due to addition of heatVaporization: liquid to gas due to addition of heatSublimation: solid to gas due to addition of heatFreezing: liquid to solid due to removal of heatCondensation: gas to liquid due to removal of heatDeposition: gas to solid due to removal of heatConsidering the given diagram, the correct matches are:
1 or 3 : Arrow that shows particles getting closer togethergas: State of matter that would fill any containerliquid: State of matter with definite volume but NOT shape2 or 4: Arrow that shows particles gaining energysolid: State of matter with definite shapeIn conclusion, change of state of matter occurs due to heat changes.
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The nuclear envelope differs from the cell membrane and the membranous endoplasmic reticulum because it _____.
The nuclear envelope differs from the cell membrane and the membranous endoplasmic reticulum because it Is a double membrane.
What is the Difference Between Nuclear Membrane and Nuclear Envelope?
Nuclear membrane and nuclear envelope vary primarily in that nuclear membrane serves as a barrier that selectively separates nucleoplasm from cytoplasm, whilst nuclear envelope serves as a structure that separates the nucleus's contents from the cytoplasm. Additionally, the nuclear envelope is made up of two nuclear membranes and nuclear pores, whereas the nuclear membrane is a lipid bilayer.
All eukaryotic cells with a nucleus have two structural elements called the nuclear membrane and nuclear envelope.
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Amino acids are built around a central ____________ atom bonded to a ____________ atom and three other groups of atoms.
Amino acids are built around a central Carbon atom bonded to a Hydrogen atom and three other groups of atoms.
Amino acids are molecules that are joined together in chains that combine to form proteins, and when these proteins are digested or broken down, the amino acids are used up.
Amino acids and proteins are essential for all living things, from microbes to humans. They make up approximately 50% of our solid body mass; they are the next largest component of our body after water.
They are classified into three groups:
Essential amino acidsNon-essential amino acidsConditional amino acidsWhat is an atom?The atom is the smallest part of the composition of matter, it is indivisible and is composed of a nucleus that has protons and neutrons, and around the nucleus there are the electrons.
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Gold is alloyed with other metals to increase its hardness in making jewelry. You have a piece of jewelry containing only gold and silver, which have pure densities of 19.3 g/cm³ and 10.5 g/cm³ respectively. You measure the piece of jewelry's volume to be 1.25 cm³ and its mass to be 20.5 g. Assuming the total volume of the jewelry is the sum of the volumes of the gold and silver it contains, what is the mass percent of gold in the piece?
The mass percent of gold in the piece is 79.08%
What is density?The density of a substance is simply defined as the mass of the subtance per unit volume of the substance. Mathematically, it can be expressed as
Density = mass / volume
Thus,
Mass = density × volume
How to determine the mass of goldDensity of gold = 19.3 g/cm³Volume of gold = VMass of gold =?Mass = density × volume
Mass of gold = 19.3 × V
Mass of gold = 19.3V
How to determine the mass of silverDensity of silver = 10.5 g/cm³Total volume = 1.25 cm³Volume of gold = VVollume of silver = 1.25 - volume of gold = 1.25 - VMass of silver =?Mass = density × volume
Mass of silver = 10.5 × (1.25 - V)
Mass of silver = 13.125 - 10.5V
How to determine the volume of the goldMass of gold = 19.3VMass of silver = 13.125 - 10.5VTotal mass of piece = 20.5 gVolume of gold (V) =?Mass of piece = mass of gold + mass of silver
20.5 = 19.3V + 13.125 - 10.5V
Collect like terms
19.3V - 10.5V = 20.5 - 13.125
8.8V = 7.375
Divide both sides by 8.8
V = 7.375 / 8.8
Volume of gold = 0.84 cm³
Thus,
Mass of gold = 19.3V
Mass of gold = 19.3 × 0.84
Mass of gold = 16.212 g
How to determine mass percent of goldTotal mass of piece = 20.5 gMass of gold = 16.212 gMass percent of gold =?Mass percent of gold = (mass of gold / mass of piece) × 100
Mass percent of gold = (16.212 / 20.5) × 100
Mass percent of gold = 79.08%
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The energy recommendation that describes the proportions of calories that should come from carbohydrate, fat, and protein are the: ______.
a. ears
b. ais
c. amdrs
d. dris
Explanation:
what are you feeling now I am looking forward
Potassium nitrate is used for a variety of applications, including fertilizer, rocket fuel, and fireworks. how many molecules of potassium nitrate are in a 25 g sample?
There are 1.5×10^23 molecules molecules of potassium nitrate are in a 25 g sample.
molecules of KNO3 = 25gKNO3 x 1mol/101.11gKNO3 x 6.022x10^23 molecules/1mol = 1.5 x 10^23 molecules.
Molecules are made up of one or more atoms. If they contain more than one atom, the atoms can be the same (an oxygen molecule has two oxygen atoms) or different (a water molecule has two hydrogen atoms and one oxygen atom). Biological molecules, such as proteins and DNA, can be made up of many thousands of atoms.
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What are hydrocarbons?
Answer:
a compound of hydrogen and carbon, such as any of those which are the chief components of petroleum and natural gas.
"the rain is rich in benzene and hydrocarbons"
Answer: a compound of hydrogen and carbon, such as any of those which are the chief components of petroleum and natural gas.
Explanation:
in organic chemistry, a hydrocarbon is an organic compound consisting entirely of hydrogen and carbon. Hydrocarbons are examples of group 14 hydrides. Hydrocarbons are generally colorless and hydrophobic, and their odors are usually weak or exemplified by the odors of gasoline and lighter fluid.
