Answer:
in an atom or molecule, no two electrons can have the same four electronic quantum numbers. As an orbital can contain a maximum of only two electrons, the two electrons must have opposing spins.
Which of the following might be included in a chemical
reaction?
a Molecules
b lons
C Pure elements
d All of the above
Answer:
D. All of the above
Explanation:
Molecules, ions, and pure elements might be included in a chemical reaction. Therefore, option (d) is correct.
What is a chemical reaction?A chemical reaction can be described as a reaction that brings the chemical conversion of one chemical substance to another chemical substance. The reactions cause chemical changes that include the rearrangement of electrons in order to create and break bonds between atoms.
The compound or molecules which are primarily utilized in a reaction are called reactants. Chemical reactions give products, which possess characteristics different from the reactants of the reaction.
Chemical reactions take place at a definite rate of reaction at a given concentration, temperature, and pressure. The rate of reaction increases with the rising temperature of the reaction as more activation energy is available for reactant molcules collisions.
Therefore, in a chemical reaction reactants and products can be present as Molecules, ions, and pure elements.
Learn more about Chemical reactions, here:
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Which atom is a carbon atom?
A
B
C
What is the ground state electron configuration for sodium (Na)?
Answer: Na has a ground-state electronic configuration of 1s2 2s2 2p6 3s1. Removing the 3s electron leaves us with the noble gas configuration 1s2 so a sodium ion is Na+.
Explanation: I HOPE THAT HELPED!
Hypothesize what would happen if most of the world's phytoplankton and seaweed disappeared? HURRY I NEED THIS NOWWWW PLEASE.
Answer:
Possible rapid deterioration of natural habitats where phytoplankton and seaweed exist.
Explanation:
Certain basic building blocks are needed for nautical environments to thrive. Assuming, in this context, without most of a certain type of oceanic species, the remaining habitats will suffer.
the following body systems is responsible for releasing waste?
Answer:
the urinary system??
Explanation:
please help ASAP!!
(I added a pic)
how many electrons are in the second ring of sodium
Answer:
there are eight electrons
What is the name of the following atoms?
An atom with 3 protons and 4 neutrons what is the name?
Answer:
an atom with 3 protons and 4 neutrons is a lithium atom
The atomic weight of magnesium is 24.What does that mean?
Answer:
because a 24Mg atom has 12 neutrons in its nucleus
which statement is a scientific law
Answer:
It is b
Explanation:
Fossils of sea creatures have been found near the top of Mount Everest (8848m above the sea level). How do you think they could have got there?
Answer:
Continental Drift
Explanation:
The fossils of sea creatures could have reached the top of Mount Everest due to the continental drift theory suggested by geophysicist, Alfred Wegener. To exaggerate, a piece of evidence that supports Wegener’s hypothesis towards a continental drift is the fact that fossils of sea creatures can’t just end up in any random place like Mount Everest. He suggests that there must be something behind this and gradually it led to his well-known theory. His hypothesis towards a continental drift suggests that his second observation was that fossils of the same prehistoric species were found in different continents that were way apart. There was just no way that all the organisms could cross the oceans and reach all of these places.
Brain’s family has a compost pile at home they need to put all the weeds the pull up from the garden in it as well as any vegetable waster they gather from the kitchen if they keep it moist all this vegetation will eventually turn into organic soil by the chemical process of decay since decay involves a variety of chemical reactions
Answer: b. It would happen faster at warmer air temperatures
Explanation:saw another site say this was the answer
The density of mercury is 13.6 g/ml. What is the volume of 386g of mercury?
The density of mercury is 13.6g/lmL. The volume of a 200 gram sample of mercury will be :
Volume=
200g/13.6g/mL
Volume=14.7mL
Therefore the correct option will be E
Determine the mass of 2.86 mole Co(NH3)6Cl3
Answer:
765 g Co(NH₃)₆Cl₃
General Formulas and Concepts:
Reading the Periodic Table of ElementsExplanation:
Step 1: Define
2.86 mol Co(NH₃)₆Cl₃
Step 2: Define conversions
Molar Mass of Co - 58.93 g/mol
Molar Mass of N - 14.01 g/mol
Molar Mass of H - 1.01 g/mol
Molar Mass of Cl - 35.45 g/mol
Molar Mass of Co(NH₃)₆Cl₃ - 58.93 + 6(14.01) + 18(1.01) + 3(35.45) = 267.52 g/mol
Step 3: Dimensional Analysis
[tex]2.86 \ mol \ Co(NH_3)_6Cl_3(\frac{267.52 \ g \ Co(NH_3)_6Cl_3}{1 \ mol \ Co(NH_3)_6Cl_3} )[/tex] = 765.107 g Co(NH₃)₆Cl₃
mol Co(NH₃)₆Cl₃ and mol Co(NH₃)₆Cl₃ cancel outWe are left with grams (mass)Step 4: Simplify
We are given 3 sig figs. Follow sig fig rules.
765.107 g Co(NH₃)₆Cl₃ ≈ 765 g Co(NH₃)₆Cl₃
Which statement describes a reason people must protect mineral resources?
A.
Minerals are used in only a few products.
B.
Mining has no effect on the natural surroundings.
C.
Minerals are pretty to look at but rarely useful.
D.
There is a limited amount of each mineral available.
Answer:
The answer is D
Explanation:
Plate movement is thought to be the result of what
Answer: Plate movement is thought to be driven by a combination of the motion of the seafloor away from spreading ridges due to variations in topography and density changes in the crust.
Hope this helps
How many protons does Royalty, R-13, have?
Royalty is element #6.
O 13
07
06
O 19
The temperature of a sample of gas in a steel tank at 0.30 ATM at 25 Celsius if the pressure W20.59 ATM what would be the final temperature inside the tank in kelvin
The final temperature : 313.06 °C
Further explanationGay Lussac's Law
When the volume is not changed, the gas pressure is proportional to its absolute temperature
[tex]\dfrac{P_1}{T_1}=\dfrac{P_2}{T_2}[/tex]
P1=0.3 atm
T1=25 + 273=298 K
P2=0.59 atm
[tex]\tt \dfrac{0.3}{298}=\dfrac{0.59}{T_2}\\\\T_2=586.06=313.06~^oC[/tex]
Which temperature is the warmest?
290K
75 F
30 C
Answer:
What the heck is "K" but I beleive 75 is the answer, but maybe wait for sumone else to answer.
Explanation:
Answer:
30 C
Explanation:
Introduction to atoms) How do I do this
Answer:
and the answers are
1 electron cloud
2 neutron
3 no charge
4 electron shell
5 proton
6 + charge
7 nucleus
8 neutron
9 - charge
Explanation:
PLEASE GIVE BRAINLIST
Explain why the Earth has four different seasons
Answer:
Earths rotation
Explanation:
Answer:
because if there was not four diferent season we would not have a day or a night because we would not be moving
Explanation:
Tendency of an object to float
Answer:
Buoyancy is the ability or tendency of an object to float in a fluid: a liquid or a gas. This happens because fluid pressure increases with depth. According to Archimedes' Principle, the buoyant force on a submerged object is equal to the weight of the liquid displaced by the object.
Explanation:
Tell why someone should visit this planet neptune, what they might be able to see or do, what they will
remember most about their visit, etc. You might want to include things they would need to be
careful of, what clothes, equipment, etc. to bring. Remember, your goal is to persuade
travelers to visit your planet because it’s the “Number One Travel Destination in our Solar
System.” (1 paragraph min.)
The rows in the periodic table are called periods.
What is true about elements in the same period?
A. They have the same atomic mass.
B. Their magnetism increases in strength from left to right.
C. Their atomic numbers increase by 1 from left to right.
D. They have similar chemical properties.
Answer: C
Explanation:
What is the mass of an atom with 44 protons, 42 electrons, and 57 neutrons?
Answer:
The atomic mass is 101.
Explanation:
Protons and neutrons are the only particles that contribute to mass. Electrons do have a mass, but it's so miniscule and insignificant that it doesn't contribute to the mass of an atom. In every instance of calculating atomic mass, add the number of protons to the number of neutrons.
Therefore,
44 + 57 = 101
number of protons + number of neutrons = atomic mass
Also, there can never be a negative amount of protons or neutrons, so if you get a negative number, there's something wrong.
Bonus Information:
Don't confuse mass with charge! As it says in its name, neutrons are neutral or have no charge. Protons (+) and electrons (-) are the only particles that have a charge, so calculating that would be different.
If you were calculating the atomic charge with the same numbers, your answer would be:
44 - 42 = 2
Charge = +2
What To Remember:
M = p + n
C = p - e
C = atomic charge, M = atomic mass, p =protons, n = neutrons, e = electrons
I hope this helps!
confusin helppppppppp????
Answer:
d. an acid is the answer
A given mass of gas in a rigid container is heated from 100 °C to 300 °C. Which of the following best describes what will happen to the pressure of the gas? The pressure will
Taking into account the Gay-Lussac's Law, the pressure will increase by a factor less than three.
Gay-Lussac's law indicates that, as long as the volume of the container containing the gas is constant, as the temperature increases, the gas molecules move faster. Then the number of collisions against the walls increases, that is, the pressure increases. That is, the pressure of the gas is directly proportional to its temperature.
In summary, when there is a constant volume, as the temperature increases, the pressure of the gas increases. And when the temperature is decreased, the pressure of the gas decreases.
Mathematically, Gay-Lussac's law indicates that the ratio of pressure to temperature is constant:
[tex]\frac{P}{T} =k[/tex]
Studying two different states, an initial state 1 and a final state 2, it is satisfied:
[tex]\frac{P1}{T1} =\frac{P2}{T2}[/tex]
In this case, a given mass of gas in a rigid container is heated from 100 ° C to 300 ° C, that is, it is heated from 373 ° K to 573 ° K. This indicates that the temperature is increasing by a factor less than three. Since pressure is directly proportional to temperature, pressure must increase in the same proportion.
Finally, the pressure will increase by a factor less than three.
Learn more:
https://brainly.com/question/4147359?referrer=searchResultsChoose the statement that is NOT true.
Hundreds of stars with planets have been confirmed using the radial velocity method and the transit method.
The first Earth-size planets ever found outside the solar system were discovered in 2012 by the Kepler Mission team.
Planets orbiting stars in the "habitable zone" are likely to have life existing on them.
More than 50% of the 100 billion stars in the Milky Way galaxy have at least one planet orbiting.
Answer:
More than 50% of the 100 billion stars in the Milky Way galaxy have at least one planet orbiting.
Explanation:
This is False so this would be your Answer
Answer: planets orbiting stars in the habitabke zone are likely to have life existinv on them
Explanation:
because it is false and i took the quiz
Select the correct answer
Giving brainliest
Answer: is C&A
Explanation:the electric motor converts electricity in to mechanical energy
the electric generator converts mechanical energy to electricity so it could not be D.
and they don't use batteries as their main source of power so it could not be B.
hence forth it is C&A
HOPE THIS HELPS!!!!!!1
PLEASE MARK BRAINLIEST!!
Determine the pressure of a 6.4L sample of oxygen gas at 300K and 100KPa, after the gas is compressed to 2.40L at 900K.
The pressure : 800 kPa
Further explanationBoyle's law and Gay Lussac's law
[tex]\tt \dfrac{P_1.V_1}{T_1}=\dfrac{P_2.V_2}{T_2}[/tex]
P1 = initial gas pressure (N/m² or Pa)
V1 = initial gas volume (m³)
P2 = gas end pressure
V2 = the final volume of gas
T1 = initial gas temperature (K)
T2 = gas end temperature
The pressure after the gas is compressed :
[tex]\tt \dfrac{100\times 6.4}{300}=\dfrac{P_2\times 2.4}{900}\\\\P_2=800~KPa[/tex]