Answer:
To answer, all living organisms contain carbon-based compounds, which classifies them organic.
Simply, carbon dioxide, is an example of an inorganic compound since it does not contain both carbon and hydrogen. Alternatively, one molecule of carbon dioxide contains one atom of carbon and two atoms of oxygen.
A balloon filled with helium occupies 21.0ft³ at 55.0°F. Find the temperature of the helium if the volume of the balloon decreases to 11.0ft³. (Assume that the pressure is held constant.)
Answer:
Assuming pressure is held constant,the question reduces to a ratio and proportion type of question where;
At constant pressure,
21.0ft³-55.0°F
11.0fy³=11.0ft³/21.0ft³×55°F
The temperature is 28.809°F≈29°F
29°F is the temperature of the helium if the volume of the balloon decreases to 11.0ft³.
What is temperature?Temperature expresses hotness and coldness or a measure of the average kinetic energy of the atoms or molecules in the system.
Assuming pressure is held constant, the question reduces to a ratio and proportion type of question where;
At constant pressure,
21.0ft³- 55.0°F
11.0fy³ = 11.0ft³ ÷ 21.0ft³ × 55°F
The temperature is 28.809°F ≈ 29°F
Hence, 29°F is the temperature of the helium if the volume of the balloon decreases to 11.0ft³.
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The force of attraction between one polar molecule and another polar molecule is
Answer:
Dipole-dipole forces
Explanation:
A polar compound is that compound which contains atoms that have a difference in charges i.e electrostatic attraction occurs between its constituent atoms. Polar molecules are attracted to other polar molecules with opposite charges and her held together with the aid of certain forces
The attractive force between the negative part of a polar molecule (-) and the positive part of another polar molecule (+) is called DIPOLE-DIPOLE FORCES. This dipole-dipole force gets stronger with an increasing polarity of the molecules involved.
Which is most likely the result of millions of metal atoms crowding together so that molecular orbitals become combined?
Answer:
(The Formation Of Bands In A Crystal)
What is the mass 5.00 x 1022 molecules of PbCI2
Answer:
ion know this one
Explanation:
what is the needed electrons for CLO3-
Which of the following is a true difference between protons and neutrons?
a
the have different masses
b
they are in different locations in the atom
c
the proton identifies the atom and the neutrons does not
d
all of the choices are true
Answer:
D
Explanation:
Which of these is not true about weight
A:it is measurement of how heavy an object is
B:it is always the same mass,regardless of gravity
C:it is affected by objects mass and the force of gravity
D:it’s is commonly measured in pounds
Answer:
its b beacuse different things have different mass
Why are liquid and gas molecules different
At 303 K, the volume of a gas is 30.0 ml. At constant pressure, what is the new
volume of the gas if the temperature is decreased to 283K?
Answer:
V₂ = 28 mL
Explanation:
Given data:
Initial temperature = 303 K
Initial volume = 30.0 mL
Final temperature = 283 K
Final volume = ?
Solution:
The given problem will be solve through the Charles Law.
According to this law, The volume of given amount of a gas is directly proportional to its temperature at constant number of moles and pressure.
Mathematical expression:
V₁/T₁ = V₂/T₂
V₁ = Initial volume
T₁ = Initial temperature
V₂ = Final volume
T₂ = Final temperature
Now we will put the values in formula.
V₁/T₁ = V₂/T₂
V₂ = V₁T₂/T₁
V₂ = 30.0 mL × 283 K /303 K
V₂ = 8490 mL.K / 303 K
V₂ = 28 mL
BRAINLEST WILL BE GIVEN TO A RIGHT ANSWER!!!!
Potassium (K) has a charge of +1, and sulfur has a charge of –2. Which best describes the compound they make?
A) The chemical formula is K2S, and the name is potassium sulfide.
B) The chemical formula is KS2, and the name is potassium sulfide.
C) The chemical formula is K2S, and the name is sulfur potassium.
D) The chemical formula is KS2, and the name is sulfur potassium.
Answer:
A) The chemical formula is K2S, and the name is potassium sulfide. Explanation:
edge
If the atomic number increases then the atomic radius should decrease right? So what’s wrong with my data
Answer:
Atomic radius increases by increasing the atomic number.
Explanation:
Atomic radius :
Atomic radius is the distance between nucleus of an atom to its outer most electronic shell.
Trend along group:
As we move down the group atomic radii increased with increase of atomic number. The addition of electron in next level cause the atomic radii to increased. The hold of nucleus on valance shell become weaker because of shielding of electrons thus size of atom increased.
As the size of atom increases the ionization energy from top to bottom also decreases because it becomes easier to remove the electron because of less nuclear attraction and as more electrons are added the outer electrons becomes more shielded and away from nucleus.
The given data show that the atomic number in increased from 4 to 88 it means atomic radius also increased from 1.53Å to 2.83Å. It means the given data is the elements of periodic table present in group. It is the data of 2nd group of periodic table.
What is the role of CdKs? to create enzymes that produce chemical changes to signal the cell to move to the next phase of the cell cycle to build structural components of DNA and energy-rich substances to activate the cyclins that cause progression of the cell cycle
Answer:
It’s b
Explanation:
Answer:
Regulation of the cell cycle is carried out by which of the following? Check all that apply.
CdKs
cyclins
What is the role of CdKs?
to signal the cell to move to the next phase of the cell cycle
Explanation:
Please help meee! It would be awesome if you can!
Answer:
3) the north Pacific Ocean
Explanation:
Maritime polar air is defined officially as: Maritime polar (mP) air masses are cool, moist, and unstable. Some maritime polar air masses originate as continental polar air masses over Asia and move westward over the Pacific, collecting warmth and moisture from the ocean
Basically it's the North Pacific Ocean because of the higher latitude and colder air temperature
Plants make their own food and are not required to consume food for energy. Into which category does this characteristic cause plants to be assigned?
Answer:
Autotrophic or Producers
Explanation:
They are often called producers because they make their own food.
Which is most likely the result of millions of metal atoms crowding together so that molecular orbitals become combined?
The formation of bands in a crystal
Explanation:
- hope that helped :)
What Happens When extra Solute is added to unsaturated ,saturated and supersaturated solution
of water is 36.0 g. If any more NaCl is added past that point, it will not dissolve because the solution is saturated. If more solute is added and it does not dissolve, then the original solution was saturated. If the added solute dissolves, then the original solution was unsaturated.
10 divided by 2 im confused
if your serious about this question then it is 5
What is evidence that a chemical change has happened?
O A. The temperature of a substance increases or decreases.
B. The amount of matter increases.
C. A substance changes into a new kind of substance.
O D. You observe a color change.
which is not a redox reaction?
a. Formation of ammonium sulphate from ammonia and sulphuric acid
b. formation of nitrogen monoxide from ammonia
c. formation of sulphuric acid from sulphur
d. formation of zinc from zinc sulphide
help me please
Answer:
D. formation of zinc from zinc sulphide
Explanation:
A redox reaction could be explained as an artificial reaction in which electrons are moved between two reactants partaking in it. This substitution of electrons can be recognized by examining the variations in the oxidation states of the reacting classes. The generation of hydrogen fluoride is an illustration of a redox reaction. We can crack the reaction down to investigate the oxidation and loss of reactants.
what is the physical state of the fuel in a lighter?why happens if you press the lighter in order to let the fuel to flow out
Answer:
It is a liquid gas
Explanation:
The spark of the lighter starts the fire which is exposed to the liquid gas in the lighter
Question: How hot is the sun?
Answer:
5,778 K
Explanation:
Can someone help me click the picture
Answer:
A product
B coefficient
C script
D rectant
The production of 2-methyl-2-phenyl propane. This would be a two-step synthesis.
Can someone explain what is this reaction ?
Easy Chemistry/ Help
Chemistry, please help
Answer:
yeap this substance can conduct electricity
Two individual atoms of the same element are slightly different. One has one more proton than it has electrons. The other has one more electron than it has protons. These atoms are both
ions
isotopes
freons
xenons
phlogistons
Answer:
ions
Explanation:
Individual atoms of the same element but having slightly different number of protons and electrons are called ions.
Ion is a charged particle.
An atom is made up of three fundamental subatomic particles. Protons are the positively charged particles Electrons are the negatively charged particles Neutrons do not carry any charges.When the number of protons > electrons the body is positively charged.
When the number of electrons > protons the body is negatively charged.
Charged particles are called ions.
Which type of bond will chromium atoms likely to form with other chromium atoms
A:ionic
B:covalent
C:metallic
Answer: B
Explanation: Covalent bonds where electrons are not shared equally between two atoms are called polar covalent bond. As shown above, the electrons in a covalent bond between two different atoms (H and Cl in this case) are not equally shared by the atoms. This is due to the electronegativity difference between the two atoms.
There are two types of chemical compound one is covalent compound and other is ionic compound in chemistry. The covalent bond will be formed between two chromium atoms. the correct option is option B.
What is chemical Compound?Chemical Compound is a combination of molecule, Molecule forms by combination of element and element forms by combination of atoms in fixed proportion.
Covalent bond formed by sharing of electron and ionic bond formed by complete transfer of electron.
Element with same electronegativity difference combine together by covalent bond whereas ionic bond is formed by elements whose electronegativity difference is high.
As two chromium is combining that is two two element with same electronegativity is combining therefore, formation of covalent bond is the only possibility.
Therefore covalent bond will be formed between two chromium atoms. the correct option is option B.
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What is the number of protons for the following?
190
+2
Os
76
Answer:
190+2=192
Explanation:
192 add it 192 added
Answer: they are right
Explanation:
A metal atom and a non-metal atom bond together. What type of bond do they form?
Question 8 options:
Ionic
Round
Covalent
Glue
Answer: Iconic
Explanation:Ionic bonds are formed through the exchange of valence electrons between atoms, typically a metal and a nonmetal.
What separation method collects vapor
Answer:
evaporation and distilation
Explanation: