Answer:
B: The colors of light emitted from heated atoms had very specific energies.
Explanation:
dont know if its the same question i had on edg but i think its B. Sorry if i didnt understand the question :)
Answer:
b
Explanation:
What is the main difference between a chemical and a physical change? PLEASE HELP ASAP
Answer:
In a chemical change the nature of the substance changes and it is transformed, for example when a piece of wood is burned, the carbon is being transformed into carbon dioxide. A physical change is one where the nature of matter does not vary.
I hpoe help you.
Answer:
physical changes only change the appearance of a substance not it's chemical composition .chemical changes change the substance with a new chemical formula
Explanation:
Distinguish between organic acid and mineral acid
Answer:
Mineral acids are very important to chemical procedures. An organic acid is an organic compound with acidic properties. ... Generally, organic acids are weak acids and do not dissociate completely in water, whereas the strong mineral acids do.
Answer:
Organic Acids:
organic acids are weaker.organic acids always contain carbon, hydrogen and oxygen. organic acids are naturally occurring. organic acids are found in plants and animals.Examples: Methanoic acid, ethanoic acid, lactic acid etc.Mineral Acids:
Mineral acids are strong. Mineral acids are derived from one or more minerals found on Earth.Other than hydrogen, no other element is fixed in mineral acids.Example: Hydrochloric acid, sulphuric acidGIVING 5 STARS AND BRAINLIEST IF YOU ANSWER FIRST AND CORRECTLY!! This is due today... so please help. Thank you.
QUESTION:
How many atoms does H2SO4 have?
Answer:
2 Hydrogen atoms, 1 Sulfur atom and 4 oxygen atoms.
Explanation:
H has a 2 next to it. S has no number assigned to it meaning it represents 1 atom. Lastly, O has a 4 next to it.
Hope this helps!!
Answer:
7
Explanation:
2 hydrogen atoms. 1 Sulphur atom. And 4 Oxygen atoms.
The superscript 2 and 4 show how many of the element are there.
Which of the following elements are characterized by having full outermost s and p
orbitals?
F. Period 7
G.
Group 8A
H.
Inner transition elements
J.
Periods 4, 5, and 6
Answer:
Group 8A
Explanation:
Group 8A elements are characterized by having full outermost s and p orbitals. These elements are also known as the noble gases or inert gases. They occupy the last group on the periodic table.
They are known to have an outer shell configuration of ns² np⁶The configuration reveals that atoms of all the elements have completely filled orbitals in their outer shell sublevels. This accounts for the non-reactivity of elements in this group. Most of the elements in the group have high ionization energy and very low electron affinity values.Some of the elements in this group are Neon, Argon, Krypton, Xenon, and Radon.
how many atoms can you fit on the head of a pin
Answer:
According to google, "About five million million hydrogen atoms could fit. Some factors would affect that number like the area of the head and the size of atoms (as well as attractions between atoms). Some atoms are larger than others." Is this accurate? I'm not sure. Good luck! :)
What accounts for the attractions in a chemical bond?
Answer:
A chemical bond is a lasting attraction between atoms, ions or molecules that enables the formation of chemical compounds. The bond may result from the electrostatic force of attraction between oppositely charged ions as in ionic bonds or through the sharing of electrons as in covalent bonds.
Explanation:
Pollinators, like bees, have a mutualistic relationship with plants. The pollinators carry pollen from plant to plant. What statement provides support for this as a mutualistic relationship?
A)The bees receive no benefit but are also not harmed. Only the plant receives benefits.
B)The bees provide protection for the flowers and the flowers protect the bees.
C)The bees deprive the flowers of valuable resources while pollinating the flowers.
D)The bees receive food from the nectar while the plants are pollinated.
Answer:
D)The bees receive food from the nectar while the plants are pollinated.
Explanation:
Bees and flowering plants have a mutualistic relationship where both species benefit. Flowers provide bees with nectar and pollen, which worker bees collect to feed their entire colonies. Bees provide flowers with the means to reproduce, by spreading pollen from flower to flower in a process called pollination.
Answer:
The bees receive food from the nectar while the plants are pollinated.
Explanation:
This is correct, but make sure it's for your answer choice, mine was A, but they switch them around.
A) saturated
B)desaturated
C)unsaturated
D)supersaturated
Answer:
No Its B Unsaturated becuase the line is slanted
Explanation:
What is the right answer?
Answer:
Option C
Explanation:
In Lewis dot structure the valence electrons are represented as dots around the symbol.
For example,
In hydrogen valence electron is only one it can be represented as,
H·
We know that in covalent bonding atoms share their electron to complete the octet. Thus, their Lewis dot structure would be represented as,
H:H
This is the Lewis dot structure of H₂.
In given atom X their are 2 valence electrons (3s²) thus its Lewis dot structure contain two dots around the symbol.
Option C is correct answer because it has only two dots which actually represent valence electrons.
Other options are incorrect because symbol X has more than two electrons/dots.
Mark is in charge of making change at his family's garage sale on a hot summer day. He runs low on change and brings out a jar of pennies from the house. He keeps the lid off of the jar. Later in the day, he notices that the pennies are hot. Which statement best explains what happened?\
Answer:
This question is incomplete
Explanation:
The question is incomplete without the options. However, when a metal (in this case what the pennies are made of) is left in direct contact with the heat from the sun, it conducts this heat and becomes hot. This process is called thermal conduction. The thermal energy is readily accepted by the material in which the pennies are made of thereby increasing the thermal energy of the penny coin which then makes the pennies hot after being left under the sun.
Brownian motion is
A. random movement of particles suspended in a fluid
B. movement of particles from an area of high concentration to low concentration
C. movement of particles from an area of low concentration to high concentration
D. random movement of smaller particles
Answer: A.
Explanation:
Brownian motion is the random motion of a particle as a result of collisions with surrounding gaseous molecules. Diffusiophoresis is the movement of a group of particles induced by a concentration gradient. This movement always flows from areas of high concentration to areas of low concentration.
Example: The movement of pollen grains on still water. Motion of dust motes in a room (though largely influenced by air currents).
WILL MARK BRAINLIEST!!!! HELPPPP
what is the difference between simple distillation and fractional distillation
Answer:
A single distillation cycle is enough to separate the mixture. ... Simple distillation is the method used to separate substances in mixtures with significantly different boiling points, while fractional distillation is used for mixtures containing chemicals with boiling points close to each other.
Explanation:
Identify whether each element is a halogen, a noble gas, or nonmetal only.
Astatine (At):
Nitrogen (N):
Krypton (Kr):
Chlorine (Cl):
Sulfur (S):
Answer:
Astatine: Halogen
Nitrogen: Non-Metal
Krypton: Non-Metal, Noble Gas
Chlorine: Non-Metal
Sulfur: Non-metal
Explanation:
6. Now, revise your definition for waves to include energy and matter.
A wave is a phenomenon that...
Answer:
A wave is phenomenon that transfers energy from one point to another through a disturbance without affecting the matter.
Explanation:
A wave is phenomenon that transfers energy from one point to another through a disturbance without affecting the matter.
There are two main types of waves Longitudinal waves travels parallel to their source. For example, sound waves. Through a series of rarefactions and compressions, longitudinal waves are propagated. Transverse waves travel perpendicular to their source.The most common physical state of the elements is
Answer: Solids, gases, or liquids
Explanation:
Matter can undergo physical and chemical changes called Phase Changes. Substances are classified based on physical states, often referred to as the States of Matter. At room temperature and pressure the common Physical States of elements are solids, gases or liquids.
Most are solids only 11 are gases and 2 are liquids
The most common physical state of elements in the periodic table is Solids as there are about 84 elements which exists as solids at room temperature and pressure in the periodic table
Elements in the periodic table can exist as one of the prominent physical states at room temperature and pressure.
These physical state may be;
SolidLiquidor GasElements which are solid at Room Temperature are about 84.At room temperature and pressure, only two elements are existent in liquid phase are: Bromine. Mercury.A look at the periodic table evidently tells that there are 11 elements in the table that exist in the gaseous state at room temperature and pressure.These elements are Hydrogen, Helium, Nitrogen, Oxygen, and the other Noble gases.
Read more:
https://brainly.com/question/21029213
During the day, the earth is heated up by the sun. The land gets hotter than the sea because it takes less energy to increase the land's temperature than to increase the sea's temperature. The land heats the air near it. This air rises and is replaced by cool air from the ocean, creating a "sea" breeze that blows from the ocean to the land during the day. Which forms of heat transfer are described above as helping to create a sea breeze? A. convection only B. radiation only C. convection and conduction D. conduction and radiation
Answer:
C. convection and conduction
Explanation:
A sea breeze is a phenomenon that occurs during hot summer days when the sun transfers its heat to the earth surface by convection the land absorbs energy much easier than the seawater. As a result, the air above land will become warmer and as we know warmer air is lighter so this air will rise-up the air above the sea will now move from sea to the land to balance this air also there will be heat exchange between land air and the sea air by conduction and hence together they will create a phenomenon called a 'sea breeze'.
Se ha añadido un evaporador para una alimentación de 11500 kg/dia de zumo de pomelo de forma que evapore 3000 kg/dia de agua por un lado y se obtenga una disolución concentrado de 50% por el otro ¿ con qué concentración porcentual inicial se deberá alimentar el zumo? (m1 = m2 + m3) (%m1 = %m2 + %m3)
Answer:
37 %.
Explanation:
¡Hola!
En este caso, para el problema descrito, conocemos la corriente de entrada y la de salida del agua, por lo que podemos obtener el flujo de la corriente que contiene el zumo a la salida una vez el agua fue evaporada:
[tex]F_{sol}=11500kg/dia-3000kg/dia=8500 kg/dia[/tex]
Luego, por medio de un balance de zumo de limón en el evaporador en el cual la cantidad que entra es igual a la que sale con sus respectivas concentraciones:
[tex]x_z^{entra}*11500kg/dia=x_z^{sale}*8500kg/dia[/tex]
Como la concentración del zumo a la salida es del 50 % (0.50), la de entrada es:
[tex]x_z^{entra}=\frac{x_z^{sale}*8500kg/dia}{11500kg/dia} =\frac{0.50*8500kg/dia}{11500 kg/dia}\\ \\x_z^{entra}=0.37[/tex]
Que es igual al 37%.
¡Saludos!
What is the mass obtained of Ag from the reaction of 3 moles of AgCl
Given= Zn + 2AgCl —> ZnCl2 + 2Ag
Answer:
323.7g
Explanation:
Given parameters:
Number of moles of AgCl = 3 moles
Unknown:
Mass of Ag = ?
Solution:
We solve this problem by working from the known to the unknown;
The known here is AgCl;
From the balanced equation:
Zn + 2AgCl → ZnCl₂ + 2Ag
2 moles of AgCl will produce 2 moles of Ag
3 moles of AgCl will produce 3 moles of Ag
The mass of Ag will be;
Mass of Ag = number of moles x molar mass
Molar mass of Ag = 107.9g/mol
Mass of Ag = 3 x 107.9 = 323.7g
Calculate the volume in milliliters of a 5.05-g sample of a solid with a density of 3.25 g/mL.
Answer:
The answer is 1.55 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 = 5.05 g
density = 3.25 g/mL
We have
[tex]volume = \frac{5.05}{3.25} \\ = 1.5538461...[/tex]
We have the final answer as
1.55 mLHope this helps you
list the elements symbols for the elements that are designated with neon green
Answer:
h,c,n,o,p those are the elements
Which stage of the body's response to stress causes your body to try and restore
a state of balance, however sometimes causing pathological issues?
O Resistance Stage
"Fight or Flight"
"Alarm Stage"
O Recovery State
if faucet drips 5 mL of water each minute, what is the volume of water dripped at the end of five minutes?
5 mL
25 mL
5 m³
25 m³
I apologize for being dumb XD
help please this is due at 2!!
Answer:
I believe the answer is C (3)
Explanation:
In an atom usually electrons number and protons number is equal.
Here lithium atom has three protons
So it has three electrons، too.
Suppose you wanted to determine the probability of a student being found at
various locations in your school building at 10am . How might you investigate this
problem based on probability?
Answer:
[tex]the \: proberbility \: will \: be : \\ \frac{number \: of \: class \: rooms \: with \: her \: friends}{total \: number \: of \: class \: rooms \: in \: the \: building} [/tex]
Explanation:
[tex]♨Rage♨[/tex]
how many atoms in a chair
Answer:
100 trillion atoms are in one cell and so just find how many cells are in a chair and then take 100xthe number and you get your answer
Explanation:
There are uncountable atoms which are present in a chair depending on it's size.
What is an atom?An atom is defined as the smallest unit of matter which forms an element. Every form of matter whether solid,liquid , gas consists of atoms . Each atom has a nucleus which is composed of protons and neutrons and shells in which the electrons revolve.
The protons are positively charged and neutrons are neutral and hence the nucleus is positively charged. The electrons which revolve around the nucleus are negatively charged and hence the atom as a whole is neutral and stable due to presence of oppositely charged particles.
Atoms of the same element are similar as they have number of sub- atomic particles which on combination do not alter the chemical properties of the substances.
Learn more about atom,here:
https://brainly.com/question/30898688
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How many moles contain 3.1 x 1022 molecules of H2O
Answer:
The answer is 0.051 molesExplanation:
To find the number of moles in a substance given it's number of entities we use the formula
[tex]n = \frac{N}{L} \\[/tex]
where n is the number of moles
N is the number of entities
L is the Avogadro's constant which is
6.02 × 10²³ entities
From the question
N = 3.1 × 10²² molecules of H2O
We have
[tex]n = \frac{3.1 \times {10}^{22} }{6.02 \times {10}^{23} } \\ = 0.05149501...[/tex]
We have the final answer as
0.051 molesHope this helps you
When thermal energy is removed from a system, what happens to the
temperature and the average kinetic energy of the system?
Temperature decreases, average kinetic energy increases
Temperature decreases, average kinetic energy decreases
Temperature increases, average kinetic energy increases
Temperature increases, average kinetic energy decreases
Answer:
When the average kinetic energy of the molecules goes up (a rise in temperature), the average speed of the molecules increases. And lower average kinetic energy of the molecules means they have lower speed. ... When heat (energy) goes into a substance one of two things can happen
Explanation:
hope this helpss!!!
An object accelerates 16.3 m/s2 when a force of 4.6 Newton’s is applied to it. What is the mass of the object?
A= .28 kg
B=74.98
C=3.8 kg
D= just to heavy to calculate
Answer:
A=0.28kg
Explanation:
FORCE=MASS * ACCELERATION
4.6=m*16.3
Then make m the subject.
m=4.6/16.3
m=0.28kg
When exposed to very high temperatures, metals like iron can be turned into fluids that flow and can be poured into molds. What happens within the iron to allow it to flow?
A) The energy of the solid decreases, and the particles begin to collide with high frequency
B)The energy of the solid increases, and the particles begin to slide past each other
C)The solids collide at an increasing rate until reaching equilibrium energy
D)The particles vibrate about equilibrium in an effort to minimize energy
Answer: B) The energy of the solid increases, and the particles begin to slide past each other.
Explanation:
The energy of the solid matter is required to be increased so that molecules of the solid matter get separated from each other and an transition from solid matter to liquid matter occurs. The liquid components of the matter will slide past each other as they have obtain energy for fluidity. The liquid iron can be molded into any shape and the energy decreases considerably.
Which is a way that the model of the atom became stronger through new experiments? (1 point)
a
New technology allowed scientists to show that the atom is indivisible.
b
It took new data to show that positive charge is not spread throughout an atom.
c
By deflecting alpha particles, Rutherford first observed the neutron.
d
The neutron could not be detected until Cathode–Ray Tubes were invented.
Answer:
Explanation:
Key points
J.J. Thomson's experiments with cathode ray tubes showed that all atoms contain tiny negatively charged subatomic particles or electrons.
Thomson's plum pudding model of the atom had negatively-charged electrons embedded within a positively-charged "soup."
Rutherford's gold foil experiment showed that the atom is mostly empty space with a tiny, dense, positively-charged nucleus.
Based on these results, Rutherford proposed the nuclear model of the atom.