Explanation:
Valence electrons of Ne, Ar are the same = 8
because they are in VIIIA or inert gas
I have the stupid pls help
Answer:
third sentences is correct i think
Answer:
combined number of protons and electrons
wich event always involves a chemical change
Answer:
Burning
Explanation:
hierve a la misma temperatura un mililitro o un litro de la misma sustancia
Answer:
Yes
Explanation:
Since it is asking you if it boils at the same temperature, not at the same time, instead if it were for the time the answer would be no, because the more substance, the longer it would take to reach the point.
It is true that a millimetre or a liquid of a substance would require same temperature to boil no matter how much amount of that substance you want to boil.
Thus the answer is YES.
Provide the elemental symbols for lead, iron, gallium, and tungsten respectively.
What is an atomic nucleus?
Answer:
The atomic nucleus is the small, dense region consisting of protons and neutrons at the center of an atom
Which of the following has 6 neutrons
A. Li - 6
B. O - 16
C. F - 18
D. C - 12
Answer:
F
Explanation:
C-12,6 neutrons, 6 protons and 6 electrons
What is the momentum of a 0.01 kg toy car moving at 5.0 m/s?
Answer: 0.05 kgm/s
Explanation:
How do the 5 branches of chemistry overlap?
Answer:
Chemistry, Biology, Medicine, Physics, and Geology
An object at a high temperature has more or less kinetic energy than an object at a low temperature
More or less ?
I need help with this on
Answer:
Experiment one, if you are only allowed to choose one answer choose C.
If you allowed to choose 2 answer's Choose A. and C.
Hope this helps! :)
Explanation:
Answer:
C
Explanation:
Reasoning for it being number one because it was repeated multiple times with the same answer while project 2 was repeated once
Can someone give me an explanation about the location of the protons, neutrons, electrons in the atom
There are two main areas of an atom, the electron cloud and the nucleus
First, let's talk about the atom's nucleus. The nucleus is in the middle of the atom. The nucleus contains neutrons (particles with no charge) and protons (positively charged protons). The number of protons is constant in every atom of the same element, meanwhile the number of neutrons is not. The atomic number of an element describes the amount of protons in a atom of that same element and it is fixed.
The electron cloud, on the other hand, is a predicted zone that's used to roughly estimate where the electrons are within the atom. Electrons are said to have no fixed orbit.
I don't want to get too in depth and make you confused so I hope this helped!
Need a little help with chemistry :)
*if you don’t, know don’t answer*
Write the electron configurations for the first 10 elements on the periodic table
Explanation:
H - 1s¹
He - 1s²
Li - 1s² 2s¹
Be - 1s² 2s²
B - 1s² 2s² 2p¹
C - 1s² 2s² 2p²
N - 1s² 2s² 2p³
O - 1s² 2s² 2p⁴
F - 1s² 2s² 2p⁵
Ne - 1s² 2s² 2p⁶
pls give me brainliest!!!
The electronic configuration of the first ten elements are as follows:
H → 1s¹
He → 1s²
Li → 1s² 2s¹
Be → 1s² 2s²
B → 1s² 2s² 2p¹
C → 1s² 2s² 2p²
N → 1s² 2s² 2p³
O → 1s² 2s² 2p⁴
F → 1s² 2s² 2p⁵
Ne → 1s² 2s² 2p⁶
Elements are named according to there atomic number in the periodic table.
The number of electron in an electronically neutral atom is equals to the number of protons.
The number of protons is also the atomic number of that element.
The first ten elements are Hydrogen, Helium, lithium, Beryllium, Boron, Carbon, Nitrogen, Oxygen, Fluorine and Neon.
The electronic configuration of elements is base on the number of electrons.
read more; https://brainly.com/question/24481950?referrer=searchResults
How many centigrams are in 0.13 oz
Answer:
I think the answer is 368.544 centigrams
Explanation:
I hope I helped
How is mass measured? What are standard units used to measure mass?
Answer: Mass in an object is often weighed on a scale. The standard units used to measure mass are the grams (g) and kilogram (kg).
Answer:
The basic SI unit of mass is the kilogram(kg). In physics mass is not the same as weight even though mass is determine by measuring the object's weight using spring scale rather than balance scale comparing it directly with known masses..
Chlorine–35 has 17 protons. How many protons and neutrons does the isotope chlorine–36 have? 19 protons and 17 neutrons 17 protons and 18 neutrons 17 protons and 19 neutrons 18 protons and 17 neutrons
Answer:
17 protons
19 neutrons
Explanation:
Chlorine will always have the same amount of protons, and that would be 17 protons.
The atomic mass will change according to how many neutrons are present.
Cl - 35 is comprised of 17 protons and 18 neutrons.
We want to find Cl - 36:
We simply add 1 neutron. 18 + 1 = 19 neutrons.
Which property would cesium most likely have? It is hard. It is ductile. It is a gas. It has low reactivity.
Answer:
it is ductile
Explanation:
i took the test
Answer:
b
Explanation:
. Between the nucleus and the electrons can be found:
A. a matrix of positively-charged matter
B. different particles depending on the atom
C. dense, neutral matter
D. nothing; most of the atom is empty space
how does instinstansly seed differ i will name brainlyest
Answer:The difference between seed plants and seedless plants is that seedless plants do not bear seeds for propagation, whereas seed plants bear seeds for multiplication.
Explanation:
Which statement best describes a possible way that
societal decisions were impacted by the 1974 research
study?
O CFCs were commonly used in refrigeration
O CFCs were replaced with other products
O CFCs were causing a large hole in the ozone layer.
O CFCs were the focus of a research study.
Answer: (B) CFCs were replaced with other products
Answer:
B
Explanation:
I don't have 1 sorry
If A + B → C + D You start with 50 g of A and 30 g of B and 40 g of C are produced, how many g of D would also be produced?
Answer:40g of D
Explanation:
Law of conservation of matter:
Matter can neither be created nor be destroyed but can change from one form to another.
The total of the reactants must be equal to that of the product.
A+B=>C+D
50g+30=40g+D
80g=40g+D
D=80-40
D=40g
what are 3 forces that can cause a physical change
Explanation:
Physical changes are caused by forces like motion, temperature, and pressure.
Question 23 (3 points)
If a piece of aluminum has a density of 2.70 g/mL and its mass is 8.1 g. What is its volume?
Answer:
The answer is 3.0 mLExplanation:
The volume of a substance when given the density and mass can be found by using the formula
[tex]volume = \frac{mass}{density} \\ [/tex]
From the question
mass of aluminum = 8.1 g
density = 2.7 g/mL
It's volume is
[tex]volume = \frac{8.1}{2.7} \\ [/tex]
We have the final answer as
3.0 mLHope this helps you
Which cell lacks a nucleus
Answer:life
Explanation:
because we act like we have no cells
What is the total number of moles contained in 115g of C2H5OH?
I will mark as Brainliest!
Which best describes thermal energy?
A.It is the difference between internal energies of two or more substances.
B.It is the sum of internal energies of two or more substances.
C.It is the portion of internal energy that can be transferred from one substance to another.
D.It is the portion of potential energy that can be transferred from one substance to another.
Answer:
Tha answer I s D. Hope it will work to u
Thermal energy is the difference between internal energies of two or more substances. Therefore, option A is correct.
What is thermal energy ?The energy present in a system that determines its temperature is referred to as thermal energy. Thermal energy flows as heat. Thermodynamics is a whole field of physics that studies how heat is transmitted across various systems and how work is done in the process.
The average kinetic energy of the system's component particles as a result of their motion makes up the thermal energy of the system. The sum of the kinetic and potential energies of the system's component particles represents the system's overall internal energy.
Thermal energy is also referred to as heat energy. A moving object's kinetic energy is its energy. Thermal energy is a type of kinetic energy because it is produced by moving particles.
Thus, option A is correct.
To learn more about thermal energy, follow the link;
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19. What is the approximate mass of one mole of helium (He) gas?
A. 2 g
B. 4 g
C. 8 g
D. 22 g
A solution contains 90 mL of methanol, 18 mL of propanol, and 2 mL of diethyl ether. Which is the solvent in this solution
solution?
O methanol
O propanol
O diethyl ether
O water
Answer:
Methanol
Explanation:
The solvent in this solution is methanol
What is Solvent?Solvent is a substance in which the solute is dissolved.polar and non polar are two types of solvent.
What are Polar solvents and Non Polar solvents?A solvent which has dipole moments are known as polar solvents.A polar solvent can dissolve ions and other polar compounds.A non polar solvent is a solvent which does not have dipole moments.
What is solute?A substance that dissolves in solution is called solute.When two liquids are mixed to form a solution, the solute is the species that is present in the smaller ratio.
Why Methanol is the solvent in this solution?Methanol is the component that has the greatest volume compared to other solvents. It means that it is found in a greater proportion. So methanol is the solvent in this solution.
Hence the other options are incorrect.
Learn more about Solvents below
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"How does changing velocity affect the total Kinetic Energy (KE) of an Object?"
Hurryyy please helpp
Two bottles are connected with a valve. In bottle A, there are 2.4 L of nitrogen gas at 1.8 atm. In bottle B, there are 4.8 L of nitrogen gas at 1.8 atm.
After opening the valve, what is the pressure of nitrogen gas?
Please answer in atmospheres.
I will give brainliest please answer quickly!
My
Answer:
1.8 atm
Explanation:
For bottle "A"
P1 = 1.8 atm V1 = 2.4L, P2 = ?, V2 = 2.4 + 4.8 L = 7.2 L,
Thus using P1•V1 = P2•V2, we have;
P2 = (1.8 × 2.4)/7.2 = 0.6 atm
For bottle "B"
P1 = 1.8 atm, V1 = 4.8L, P2 = ?, V2 = 7.2L,
P2 = (1.8 × 4.8)/7.2 = 1.2 atm
We will now add the individual pressures of each bottle;
Total pressure = P(A) + P(B)
Total pressure = 0.6 + 1.2
Total pressure = 1.8 atm.
