Answer:
-1.76202
Explanation: Because the operation is subtraction, you would count the number of digits after the decimal point. Then you would perform the operation and round your answer to the SMALLER number of digits after the decimal point.
one liter of gas has a pressure of 150.00kPa at 25 degrees celcius. if the pressure increases to 600.kPa and the temperature to 100.0 degrees celcius, what would be the new volume of the gas
Answer:
0.313 liters
Explanation:
You want to use the Combined Gas Law Equation: (P1*V1)/(n1*T1)=(P2*V2)/(n2*T2). You then want to cross off things that don't change, so moles(n) in this example. Then convert the temperature to Kelvin (always), and solve algebraically.
which is the best reason given to explain why metals make good electrical conductors?
Answer: Metals are an excellent conductor of electricity and heat because the atoms in the metals form a matrix through which outer electrons can move freely.
Explanation:
Which is the correct definition of electronegativity?
Answer:
Electronegativity is defined as the tendency of an atom participating in a covalent bond to attract the bonding electrons
Explanation:
Electronegativity increases and you go up and to the right, making fluorine the most electronegative element.
What is leukemia?
A. Cancer that affects the blood
B. Prostate cancer
C. Breast cancer
D. Lung cancer
Answer:
A: Cancer that affects the blood
information: Leukemia is a cancer of the early blood-forming cells. Most often, leukemia is a cancer of the white blood cells, but some leukemias start in other blood cell types.
Do you feel that this equation is currently following the law of conservation of mass?
N2 + H2 → NH
Answer:
N2 + H2 --> 2 NH
Explanation:
You need to add 2 to make it correct
Prepare and name an alcohol by using the following reactants
Hex-1-ene and a water molecule write the complete reaction.
Answer:
Alcohol will form at more substituted carbon due to carbocation rearrangement so 2-hexanol
Explanation:
Well if it’s acid catalyzed
What makes solids, liquids, and gases different. Explain the hypothesis, prediction and experiments that can lead to scientific theory.
Answer: Gases, Liquids, and Solids
Gases
Explanation:
Behavior
gas liquid solid
assumes the shape and volume of its container
particles can move past one another assumes the shape of the part of the container which it occupies
particles can move/slide past one another retains a fixed volume and shape
rigid - particles locked into place
compressible
lots of free space between particles not easily compressible
little free space between particles not easily compressible
little free space between particles
flows easily
particles can move past one another flows easily
particles can move/slide past one another does not flow easily
rigid - particles cannot move/slide past one another
a hypothesis is a prediction based on a theory. If the Hypothesis comes true the theory is more accepted.
A scientific theory differs from a scientific fact or scientific law in that a theory explains "why" or "how": a fact is a simple, basic observation, whereas a law is a statement (often a mathematical equation) about a relationship between facts.
Help this is due today!!!
Answer:
a) Fe
b) Fe
c) Fe
Explanation:
When using their stoichiometric ratios, in all of the the iron will run out before the oxygen, making the iron the limiting reactant.
10 facts about “molecules”
Answer:
Explanation:
A perfect diamond is a single molecule made of carbon atoms.
DNA is a super long molecule that has information uniquely describing every human being.
When two or more atoms chemically bond together, they form a molecule.
They are very small in size.
They have space between them.
They are in constant random motion.
molecules move when Particles move rapidly in all directions but collide with each other more frequently than in gases due to shorter distances between particles.
In 1926, French physicist Jean Perrin received the Nobel Prize in physics for proving, conclusively, the existence of molecules.
Molecules can exist in free state because they are very stable.
The smallest particle of a compound capable of existing on its own is a Molecule-not a atom.
How to get your crush to like you back
As the ionic compound increases in
complexity, the melting point
A. increases
B. decreases
C. stays the same
Given what we know, we can confirm that as an ionic compound grows more complex, its melting point will increase.
What is an Ionic compound?An ionic compound is one in which atoms of elements share electrons between them to form compounds.These shared electrons generate powerful electrostatic forces that we refer to as ionic bonds. Electrostatic forces cause an increase in the melting point of a compound. As a compound grows more complex and adds more elements to its composition, it will gain new electrostatic forces, and thus increase its melting point.Therefore, as an ionic compound grows more complex, its melting point will increase due to the increasing number of strong electrostatic forces present in the compound.
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Answer: it INCREASES
if you don’t wanna read that long answer the other person put
Explanation:
What is the difference between a conductor and an insulator?
Answer:materials that impede the free flow of electrons from atom to atom and molecule to molecule.
Answer:
conductores can flow easily through the electrical component while the insulators not
which of the following contains a covalent bond?
A) BeO
B) LiCI
C) CN
D) MgO
Answer= C) CN contains a covalent bond.
an atom of chlorine has an amount number of 17 and a mass number of 37. how many protons neutrons, and electrons are in the atom?
Answer: There are 20 protons neutrons in the atom
What is held together by a metallic bond?
Answer:
metallic bond, force that holds atoms together in a metallic substance. The atoms that the electrons leave behind become positive ions, and the interaction between such ions and valence electrons gives rise to the cohesive or binding force that holds the metallic crystal together.
Explanation:
Is this a male cat or female?
Explanation:
Lift the kitten's tail. The opening just under the tail is the anus. Below the anus is the genital opening which is round in males and is a vertical slit in females. In kittens of similar size, the distance between the anus and the genital opening is greater in the male than the female.
TW: use of inapropate words*
Answer:
not enough information to tell
Explanation:
One way you can tell this difference is the distance between the cat's genitals (organs seen on the outside of the body) and the anus. A male will have a much greater distance between the genitals and anus than females, 1/2 inch apart on a male kitten and over 1 inch apart on a male adult cat. However, if the two are almost adjacent on a kitten or less than 1/2 inch apart on an adult, it’s a female.
PC13 ionic or covalent
Answer:
The bond between Phosphorus and Chlorine in PCl3 is covalent as chlorine needs one electron and phosphorus has metallic character and easily donate electron
which blue and violet gemstone is used as the birthstone for december?
Answer:
Tanzanite
Explanation:
Tanzanite is the exquisite blue-purple variety of the mineral zoisite that is only found in one part of the world. Named for its limited geographic origin in Tanzania, tanzanite has quickly risen to popularity since its relatively recent discovery.
pls answer thisss it's due today
Answer:
1.correct
3.correct
Explanation:
pls mark me as brainliest
Answer:
I believe A is the correct answer.
Explanation:
I note that another response includes C. as another correct answer. It is possible, but it depends on what is meant by "fixed shape." I interpret "fixed shape" as the collection of the gases forming a fixed shape on their own. Gases fill the container they are in (be it a flask, room, or a planet, so they have a fixed shape by that definition. But a primary definition of gases is that that take on the shape of their container, not a shape of their own.
A. is correct because perfect gases have no interactions (AKA the Ideal Gas Laws). They may have interactions, and often do, but they are weak. That's why the ideal gas laws are a good first approximation to how gases change volume based on temperature and pressure.
the empirical formula for trichloroisocyanuric acid
Answer:
OCNCl
Explanation:
The empirical formula for trichloroisocyanuric acid, the active ingredient in many household bleaches, is OCNCl. The molar mass of this compound is 232.41g/mol.
mass is the gravitational pull on the earth
-tru
-fals
plz help
Answer:
I believe the answer is false
Explanation:
Earth's gravity comes from all of its mass. All the mass makes a combined gravitational pull on all the mass in an object. If you were on a planet with less mass than Earth, you would weigh less than you do here. Mass is the quantity of matter in a physical body. It is also a measure of the body's inertia, the resistance to acceleration when a net force is applied. An object's mass also determines the strength of its gravitational attraction to other bodies. Mass is not the gravitational pull on the earth.
Please help to complete this
The Lewis dot model of an atom has seven dots. Which of the following is true about the atom?
A) it has seven energy levels.
B) it has one valance shell electron.
C) it requires one electron to complete it’s octet.
D) it requires seven other atoms to form a stable compound.
It requires one electron to complete its octet
The Lewis dot model of an atom has seven dots. The statement true about atom is,
It requires one electron to complete it’s octet.So, option C is correct one.
What is Lewis dot model?The simple representation of the valence shell electrons in a molecule.The Lewis structure is also known as Lewis dot formula, electron dot structure, Lewis dot structure, Lewis electron dot structure.It is used to show the arrangement of electrons around individual atoms in the molecule. In this representation valence electrons of atom is shows as dot or bonding electrons as a line between two atoms.What is valence electrons?The electron/electrons present in valence shell is called valence electrons. Each atoms require eight electrons to complete their octet or valence shell.
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50 PIONTS PLZZZ HELP
What volume of 0.100 M K2S solution contains 3.5 g of the solute?
Answer:
mols solute(K2S) = grams/molar mass = ?
Then M = mols/L. You know M and mols, solve for L.
Explanation:
3.5/0.1
L= 35
Hope this helps!!
Please tell me if I have made a mistake!!
I enjoy learning from them:)
Answer:
0.32L
Explanation:
Use formula of V= wt/mm•M.
To get this information we need to first get the molar mass (mm).
mm:
K - 2 x 39.09
S - 1 x 32.06
K2S - 110.262 g/mol
Now we plug it back into the equation.
3.5g/ (110.262 g/mol) • (0.100M)
= 0.317 L of solution
To round to the correct number of siginficant figures the answer is.
= 0.32 L
A high viscosity liquid will
Answer: high viscosity fluids move sluggishly and resist deformation.
Explanation: some examples of high viscosity liquids is Honey, syrup, motor oil, and other liquids that do not flow freely
1. If the surface area of liquid is large then evaporation will be
A. small
B. large
C. moderate
D. slow
1. If the surface area of liquid is large then evaporation will be
A. small
B. large
C. moderate
D. slow
Answer:-B. Large
Explanation:-Evaporation increases with increasing surface area. This is because the greater the surface area (exposed to the air), the more molecules escape into the air.
More surface area = Higher rate of evaporation.
What are electron Subshells?
Answer:
a subshell is a subdivision of electron shells that are separated by electron orbitals.
Explanation:
(subshells are labeled s,p,d, and f in an electron configuration)
What mass of sugar and water is needed to make 40 g of 10% solution?
10 g of sugar to 40g of water the solution becomes 50 g.
_________________________________________
= 10 / 50 * 100
= 20 %
_____________
Percentage of the sugar solute = Mass of solute / Mass of solution * 100
What is a control group?
A group that changes the variable
The group that applies the variable
The group that tests the variable
A test group where the variable is not changed or applied Which of the following objects is transforming electrical energy into energy of motion?
Answer:
The group that tests the variable.
Explanation:
The group that tests the variable is a control group.
Answer:
C when testing the group put the varible in control
Answer the following question in 1-2 complete sentences. What factors can influence the properties of glass, which include its ability to transmit, reflect, or absorb light, or to be transparent?.
What factors can influence the properties of glass, which include its ability to transmit, reflect, or absorb light, or to be transparent?
Answer · 47 votes
The properties can be influenced by many factors. The most common are the shape of the object, the lighting where the object is located, the environment (colors, shapes, density of other objects, etc.), and the viewing angle of the observer.