Answer:
I think its b part or none of above
Write word equations for the reactions of a) magnesium with chlorine b) potassium with oxygen c) sodium with bromine d) carbon with oxygen.
Element of group 2 loses two electrons in the process of a chemical combustion. what is the ionic charge? +2 or -2
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
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.
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what is the chemistry between us?
Match each term in the first column with an example in the second column. On a sheet of paper, write the letter of the answer.
1. physical property
2. chemical property
3. solid.
4. liquid
5. physical change
6. chemical change
———————————————
A. ability to burn
B. rust appears on a nail
C. a puddle freezes
D. substance that has a definite shape and volume
E. temperature or destiny
F. substance that has a definite volume, but no definite shape
Answer:
4 = f
3 = d
5 = c
6 = b
2 = a
1 = e
Explanation:
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.
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• 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.
What is the minimum uncertainty in a simultaneous measurement of the y-component of the proton's velocity?.
Answer: c
Explanation:
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.
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
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.
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what type of elements form ionic bonds with metals
Answer:
between metal and nonmetal ions
Explanation:
After moving down a group in the periodic table, the number of valence electrons
the number of Valence electrons remains the same
How many elements are present in the compound Na_2S_2O_3
Answer:
3 elements are present in thr compound
What is the formula for atomic weight amu of neon
Answer:
abundance of the first isotope times the Mass of the first isotope
An aqueous solution has a volume of 2.0 L and contains 36.0g of glucose. If the Molar Mass of glucose is 180g/mol, what is the molarity of the solution
Convert grams of Glucose to moles of Glucose and then solve for Molarity
show all work.
Answer:
moles = 36/180 = 0.2 moles
molarity = 0.2/2 = 0.1 mol/dm3
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.
1. Predict the shape of the graph for a y versus x plot of air pressure versus altitude.
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
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.
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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
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.
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
PLEASSE HELP gotta get the answers neowww, basically just match the letters with the things.
Answer:
North pole-A
South pole- F
Equator- E
Polar Easterlies-C
Prevailing Westerlies-D or B-not sure
Trade Winds-D or B-not sure
Which answer is it for number 7
Answer:
The answer is I
The 4 one represents Solids coz in solids atoms are tightly packed
why do atoms get smaller as you move across a period
What is the main cause of global convection currents?
A. Deforestation
B. The Greenhouse effect
C. The increase in the number of cities
D. Uneven heating of the Earth by the sun
Answer: The answer is D, uneven heating of the Earth by the Sun.
giving brainly if correct!
complete the chart above
Answer:
I hate chemistry good luck alice