What is the atomic mass, in amu, of this atom?
Answer:
1) H - hydrogen - 1.100797
2) HE - helium - 4.00260
3) LI - lithum -6.941
Explanation:
On the periodic table the mass of carbon is reported as 12.01 amu. This is the average atomic mass of carbon. No single carbon atom has a mass of 12.01 amu, but in a handful of C atoms the average mass of the carbon atoms is 12.01 amu.
One of the main properties used to describe a population
Answer:
Birth rate, death rate, emigration, immigration, or a census.
Explanation:
giving brainly if correct!
complete the chart above
Answer:
I hate chemistry good luck alice
Which correctly lists three items that are removed during the purification of wastewater?
chemicals, gases, solids
debris, chemicals, solids
gases, debris, groundwater
groundwater, gases, harmful organisms
Answer: its the 3rd one
Explanation:
Answer:
gases, debris, groundwater.
Explanation:
if I'm wrong blame me.
hope it helps.
and can I have briniest
Two samples of carbon come into contact. A heat transfer will occur between sample A and sample B. What must be true for heat to transfer from sample A to sample B
it was observed that magnesium sulphate was present in tap water ,which hardness might that be
Answer:
Calcium sulphate is the right answer for this question.
It is because calcium sulphate helps to obtain the hardness in water. hardness.
The presence of this resource is a main reason for permanent hardness.
Hard drinking water has moderate health benefits, but can pose serious problems for the industrial settings.
Explanation:
Analyze the reaction of solid magnesium and water. Which pair of reactants and products in the table below represent the correct balanced equation for the reaction?
Answer:
monkey
Explanation:
cause that's what u r
Which answer is it for number 7
Answer:
The answer is I
The 4 one represents Solids coz in solids atoms are tightly packed
HURRY I HAVE 20 MIN LEFT will mark brainllest When. Coach Kwan notices that a player is getting tired, she takes out the tired player and substitutes a fresh player. Which type of chemical reaction does this best model?
replacement
decomposition
synthesis
oxidation
If you wanted to make a crucible for melting sodium (Na), which metal would be most suitable for that purpose
To make a crucible for melting sodium (Na), metals that would be most suitable for that purpose are inert metals or metals like alumina.
What are inert metals?inert metals are those metals that do not react with other highly reactive metals or in the atmosphere due to the absence of one free electron in the outermost orbital.
The sodium metal is kept in the crucible of the inert metal like alumina because sodium has one free electron in the outer shell and catches fire as come into the contact with the air.
Therefore, to make a crucible for melting sodium (Na), metals that would be most suitable for that purpose are inert metals or metals like alumina.
Learn more about inert metal, here:
https://brainly.com/question/14546209
#SPJ6
1. Explain the difference between genetic, environmental, social, and pathogenic factors.
2. How do pathogens spread?
3. How can we, as humans, prevent transmission of pathogens?
4. List three ways the environment can affect personal health.
1. Genetic factors are those where the genetic condition of an individual is capable of increasing the probability of developing certain diseases.
Environmental factors include the diversity of environmental stresses such as population density, temperature, food and pollutants that impact human health.
Social factors are related to the interaction of groups through culture, social class and family structure, which also have an effect on population health.
Pathogenic factors, on the other hand, are those transmitted by agents such as viruses, fungi, bacteria and protozoa, which colonize a host by adhering to cells and evading immunity, generating diseases.
2. The transmission of pathogens can occur in several ways, such as contact with bodily fluids from infected people, cross-transmission or through being spread through particles in the air.
3. We can prevent the transmission of pathogens through proper hygiene habits, healthy eating, vaccination against infectious diseases and avoid contact with other people if you have a communicable disease.
4. The environment can affect personal health through climate change, pollution and lack of infrastructure that lead to less access to quality food and basic health conditions.
Learn more here:
https://brainly.com/question/13179079
After moving down a group in the periodic table, the number of valence electrons
the number of Valence electrons remains the same
What is the difference between an element, compound, and a mixture
Answer:
Element: Pure substance consisting of one type of atom. Compound: Pure substance consisting of two or more different atoms. Mixture: Two or more different substances not chemically combined.
Explanation:
PLEASE ADD ME AS BRAINLIEST
what is the strongest interparticle force in a sample of so2?
Answer:
The strongest intermolecular force in sulfur dioxide is dipole-dipole forces.
Explanation:
The interparticle force in [tex]SO_{2}[/tex] (sulfur dioxide) is the dipole-dipole interaction.
What is dipole-dipole interaction?
Dipole-dipole interaction is a type of intermolecular force that occurs between polar molecules. Polar molecules have a permanent dipole moment, which means they have a partial positive charge on one end and a partial negative charge on the other end. This creates an electrostatic attraction between the partial charges of neighboring molecules. The stronger the dipole moment of a molecule, the stronger its dipole-dipole interaction will be with other polar molecules.
Dipole-dipole interactions are responsible for a variety of physical properties of substances, including their boiling and melting points. Substances with strong dipole-dipole interactions tend to have higher boiling and melting points than substances with weaker interactions. In addition, the strength of dipole-dipole interactions can affect solubility, as polar substances tend to dissolve better in other polar substances due to their ability to form dipole-dipole interactions.
Learn more about dipole-dipole interaction, here:
https://brainly.com/question/30510859
#SPJ2
2) Imagine that a loudspeaker is producing quiet note with a low pitch
How will it’s viberation change
a) If the pitch of the note becomes higher?
b) If the note become louder
Answer:
Higher pitched sounds produce waves which are closer together than for lower pitched sounds. (Think of the slinky - if you produce waves rapidly they will travel quite close to each other, thus demonstrating a higher pitched sound.)
The pitch of a note will depend on a number of factors. One of these is the size of the vibrating object. On a glockenspiel or xylophone the high notes are made by the smaller bars. A smaller triangle or cymbal will make a relatively higher pitch note. On a stringed instrument such as a guitar or violin a thinner string will generally make a higher note, but also shortening the string by stopping it with the finger will produce a similar effect. On a set of pan pipes or a church organ it is the shorter pipes which make the higher notes when the air inside them vibrates.
Another factor which produces higher pitched notes is the tension within the vibrating object. A guitar string can be tuned to a higher pitch by adjusting the string tensioner. An elastic band can be stretched tighter and a drum skin can be tensioned to increase the pitch of the sound it produces.
Circle the compound below that does not contain an alkaline earth metal.
Ca(OH)2, Sro, Mg3N2, NaOH, MgCl2, Bas
NaOH.
Na = Sodium which is in group 1 of periodic table which are alkaline metals. all the others are alkaline earths as they are all in group 2.
what is the 3-dimensional orientation of a sublevel known as?
The 3-dimensional orientation of a sublevel is known as atomic orbital.
In quantum mechanics, Atomic orbitals are locations around an atom's nucleus where electrons are most likely to be at any particular time(specific orbits). These specific orbits exist in levels and can be broken down into sublevels.
Each sublevel has an orbital and it is oriented differently in 3-dimensional space.
The atomic orbital is a mathematical function that depicts how one or two electrons in an atom behave as seen in waves.
Learn more about atomic orbitals here:
https://brainly.com/question/1832385
What color does red cabbage juice change in ammonia?
Answer:
Green
Explanation:
Ammonia turns the cabbage juice into a blue/green color because it is a base, a material that tastes bitter and makes an acid neutral.
Answer:
green
Explanation:
I did the experiment
Please select the word from the list that best fits the definition
a new energy source found in the ocean that is currently very costly to obtain
nonrenewable resources
renewable resources
methane hydrates
plankton
petroleum
nonliving resources
Answer:renewable resources
Explanation:
What does a chemical equation show that a word equation does not
Answer: I do believe it shows variables.
Explanation:
the valence electrons of metals jump easily to a higher energy orbital when light shines on them then they all fall emiting the excess energy as light which property of metals is explained by this?
Answer:
Lustrous
Explanation:
Metals are lustrous which gives them a property of having Shiny surfaces
The valence electrons of metals jump easily to a higher energy orbital when light shines on them then they all fall emitting the excess energy as light show lustrous property of metals.
What are valence electrons?Valence electrons are defined as a negatively charged particle that can be shared or transmitted between atoms that is found in the outermost shell of an atom. Valence electrons have a crucial role in determining how an atom will behave. The electrical configurations of elements can be used to find valence electrons. The total number of valence electrons in that element is then determined by counting the number of electrons in the outermost shell.
When newly treated, polished, or broken, a material takes on a bright look and conducts electricity and heat reasonably well. Metals are typically ductile and malleable. These traits are the result of the metallic bond that connects the atoms or molecules of the metal.
Thus, the valence electrons of metals jump easily to a higher energy orbital when light shines on them then they all fall emitting the excess energy as light show lustrous property of metals.
To learn more about valence electrons, refer to the link below:
https://brainly.com/question/13993867
#SPJ2
3. Type: MT
Match the term to the correct definition
1. Homogeneous mixture
a. same throughout
2. Heterogeneous mixture
b. different throughout
Homogeneous mixture - same throughout
Heterogeneous mixture - different throughout
Answer: Homogeneous Mixture : B(different throughout)
Heterogeneous Mixture : A(same throughout)
What is the molarity when 500mL H2O is added to 20mL 6.0M HNO3?
Answer:
50.00-mL volumetric flask and diluted to the mark with water. What is the molarity of the new solution? 12. 30.00 mL of water is added to 20.00 mL of 0.0500
Explanation:
Hope This helps
Have a great day
~Zero
why do atoms get smaller as you move across a period
which aqueous solution has the lowest vapor pressure?
Answer:
Since all of them are aqueous solutions, the solvent in each solution is H2O. Based on the Raoult's Law, we only have to determine which solution contains the highest mole fraction of the solvent, H2O. The solution that will have the lowest vapor pressure is a. 0.20 m Na2SO4.
Explanation:
plz give brainliest
PLEASE HELP WILL AMRK BRAINLIEST
what is the atomic mass of Na3PO4?
Answer:
163.94
Explanation:
Na = 22.99 (3)
P = 30.97
O = 16.00 (4)
22.99(3) + 30.97 +16.00(4) = 163.94
Hope that helps
Compare the structure and bonding of the three compounds:
• carbon dioxide
•magnugum ondo
•silicon dioxide
(6 mark question)
Silicon dioxide is a covalent network solid. Magnesium oxide is an ionic compound while carbon dioxide is a covalent molecule.
Carbon dioxide is a covalent compound. The compound contains polar C-O bonds but overall the compound is nonpolar as such the molecules are held together by only weak dispersion forces.
The compound magnesium oxide is an ionic solid. It is composed of magnesium ions and oxygen ions in a crystal lattice. Owing to the fact that the ions are very small, the lattice energy is large and the compound is almost insoluble in water.
Silicon dioxide is a covalent network solid which is composed of chains of silicon - oxygen bonds. The network solid forms a very rigid structure having a high melting point.
Learn more about network solids: https://brainly.com/question/8236583
Mass is the amount of matter in an object, but
weight is
A. the size of the matter.
B. the amount of space matter takes up.
C. the shape of the matter.
D. gravity's pull on the matter.
Answer: is equal to the gravitational pull on an object
Explanation:
which is the first news paper of Nepal
Answer:
Nepal Bhasa Patrika
Explanation:
Nepal Bhasa Patrika
• If the distance between Earth and the Moon decreased by half, how would it affect the
weight of a person on Earth?
Answer:
look at the explanation
Explanation:
Tides would be much higher also A lunar month would be about 10 days rather than 29 days, so the phases of the moon would go much quicker.