Answer:
bar graph
Explanation:
hope it helps
According to the mole concept, there are 1.8074 moles in 77.1 g of chlorine.
Mole is defined as the unit of amount of substance . It is the quantity measure of amount of substance of how many elementary particles are present in a given substance.
It is defined as exactly 6.022×10²³ elementary entities. The elementary entity can be a molecule, atom ion depending on the type of substance. Amount of elementary entities in a mole is called as Avogadro's number.
It is widely used in chemistry as a suitable way for expressing amounts of reactants and products.For the practical purposes, mass of one mole of compound in grams is approximately equal to mass of one molecule of compound measured in Daltons. Number of moles is calculated as, mass/molar mass
Substituting values in formula gives, number of moles=77.1/70.90=1.8074
Thus, there are 1.8074 moles in 77.1 g of Cl₂.
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B. air resistance
C. friction
D. inertia
E. centripetal force
Answer:
Gravity, inertia, centripetal force
Explanation:
Gravity: A space shuttle in orbit experiences gravity not just from the planet it is orbiting but from other celestial bodies too
Air resistance: There is no atmosphere in space so the shuttle experiences no air resistance
Friction: There is no atmosphere or surface that it is moving on so the shuttle experiences no friction
Inertia: Any body that is moving or stationary experiences inertia, the resistance to change in velocity whether it is moving or stationary
Centripetal force: The shuttle is in orbit, what keeps it in orbit is the centripetal force towards the center of the body it is orbiting
(2) beta particle (4) neutron
According to the research, alpha particles are a type of radioactive emission that has a positive charge and weak penetrating power.
They are very heavy particles that have a positive charge and are composed of two protons and two neutrons from the nucleus of the atom.
That is to say, it is a completely ionized nucleus, without its ideal electron coating, identical to the Helium nucleus and they are of low penetrability.
Therefore, we can conclude that according to the research, alpha particles are a type of radioactive emission that has a positive charge and weak penetrating power.
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Good Morning
Answer : A particle that orbits the nucleus in an atom is called an Electron
Hint : Electron, negatively charged particle orbiting the nucleus. Same number as protons in neutral atoms
I hope that's help !
Happy Sunday :)
Answer:
The prefix is but-.
Explanation:
"A molecule of a compound contains a total of 10 hydrogen atoms and has the general formula CnH2n+2.Which prefix is used in the name of this compound?
A) but- B) dec- C) oct- D) pent"
Hydrocarbons are compounds that contain only carbon and hydrogen. They are divided into aliphatic and aromatic hydrocarbons.
In aliphatic hydrocarbons, carbon atoms form open chains and are classified as alkanes, alzenes or alkenes, and alcines or alkynes.
Alkanes have only simple bonds between carbon atoms. The general formula for aliphatic (straight-chain) alkanes is CₙH₂ₙ₊₂.
Alkenes are hydrocarbons that have a carbon-carbon double bond in their molecule, and that is why they are called unsaturated. The generic formula is CₙH₂ₙ.
Alkynes have a triple bond between two carbon atoms. Its general formula is CₙH₂ₙ.
So in this case, you know that it is an alkane. To name an alkane, you must know the number of carbons n. For that you know that the compound has 10 hydrogens. That is, 2n + 2 must be 10. Then you can calculate the value of n:
2*n+2=10
2*n=10 -2
2*n=8
n=8÷2
n=4
So, in this case, the prefix is but-.