Answer:
a. Expansion: the spatial dilation of a material that occurs upon changes in its composition. (an increase in number or amount to become larger in size.)
E.g- in a thermometer, when it gets hotter, the liquid inside them expands and rises up the tube.
b. Sublimation: the process in which a solid changes directly into a liquid.
E.g- dry ice, solid iodine and ammonium salts.
when the above solids are heated, only particles which are found on the surface of the solid have enough energy to break all forces of attraction and form a gas.
c. Contraction: it is the opposite of expansion. when a liquid is cooled the particles slow down and contract.
E.g- when a thermometer is taken out of your mouth, it contracts and the liquid inside falls back to the bottom.
f. Random Motion: motion in which the particle moves in a zig-zag manner and not in a straight line. The kinetic particle theory states that matter is made up of particles which are in constant random motion,
Explanation:
in which ratio will group (1) elements react with group (vi) elements
Answer:
Group1 elements will react with groupvi element in the ratio
1:2
Group ( 1 ) elements react with group ( vi ) elements in 1 : 2 ratios. Group ( 1 ) elements are alkali metals and group ( vi ) elements are chalcogens.
What is element ?A chemical element is a species of atoms, including the pure material made entirely of that species, that have a specific number of protons in their nuclei.
Chemical elements, in contrast to chemical compounds, cannot be reduced by any chemical process into simpler molecules. All living and non-living things are made up of elements, which are fundamental building blocks.
They serve as the universe's center. Elements make up every particle, no matter how little or large. The five primary elements that make up our body are carbon, hydrogen, oxygen, nitrogen, and calcium.
Thus, Group ( 1 ) elements react with group ( vi ) elements in 1 : 2 ratios.
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The kinetic energy of an object depends on how much space an object takes up True or false?
Suppose a 250.mL flask is filled with 1.1mol of Br2 , 1.8mol of OCl2 and 0.50mol of BrOCl . The following reaction becomes possible: +Br2gOCl2g +BrOClgBrClg The equilibrium constant K for this reaction is 3.38 at the temperature of the flask. Calculate the equilibrium molarity of OCl2 . Round your answer to two decimal places.
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identify 2 ways to measure mass
Answer:
The two ways to measure mass are subtraction and taring.
Convert 4752 meters into miles
Answer:
2.935 miles
Explanation:
because when you convert feet into miles, it all adds up
Why should an acid be handled with caution
Explanation:
acid should be handled with caution because it is dangerous as it may burn the skin
you have 100ml of 0.5M HCL solution and you want to dilute it to exactly 0.1M how much water should you add?
Answer:500 ml
Explanation:
M1 = 0.5
V1 = 100 ml
M2 = 0.1
V2 =??
M1 * V1 =M2 * V2
0.5 M * 100 ml = 0.1 M *V2
V2 =0.5 M * 100 ml /0.1 M
V2 = 500 ml
How many inches are in 4.5 miles?
If you were to have a bottle containing compound X in your closet, what phase would it most likely be in? *
Answer:
Most likely gas
Explanation:
Which of the following represents the electronic structure of three elements in the periodic table
A. 2.8.1 2.8.3 2.8.4 B. 2.8 2.8.1 2.8.2
C. 2.7 2.8 2.8.1 D. 2.1 2.8.1 2.8.8.1
Answer:
a
Explanation:
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Answer:
Is that you?
Explanation:
5.
5.555 x 1014 ounces = ? millipounds
Please help thank you (15 points)
Answer:
C.
Explanation:
The arrows represent the Earth spinning on its own axis in this picture.
Please help due today
calculate the translational partition function of xenon and helium at the them temperature and volume
Explanation:
a) The ratio of the translational partition of D2 and H2 is 2.82
b) The ratio of the translational partition of xenon and helium is 187.56
Explanation:
a) The translational partition for D₂ is equal to:
Where
m = mass of molecule
k = Boltzmann constant
T = absolute temperature
V = volume of container
h = Planck constant
If rewrite the equation:
The same for the H₂ molecule:
Taking the ratio D₂ and H₂:
Where
mH₂ = 2.015894 amu
mD₂ = 4.028204 amu
b) The same way to part a)
Organelles called chloroplasts provide food for the plant by using the sun's energy. What
Is this process called?
A. mitochondria
B. mutation
C. photosynthesis
D. glucose
Answer:
Photosynthesis
Explanation:
Photosynthesis is a key process in plantsIn this process plants use Sunlight,water and Carbon dioxide to produce Carbohydrates .Chloroplasts take key role in it.Which has higher specific heat capacity, iron or brick (Concrete
Answer:
Brick
Explanation:
Answer:
Explanation:
Brick has a heat capacity of 840 J/kg degree Centigrade.
That means that if you have 1 kg of brick, you will need to add 840 joules of heat to get it to go up 1 degree C.
The heat capacity of iron is 450 J/kg (degree centigrade).
Brick has the higher heat capacity. Undefined in all of this is a joule. It is a work unit. The problem is that to define a joule accurately, you need to bring in a lot of other units. Content yourself by understanding that both the iron and the brick are measured in the same units -- Joules.
Which substance is a binary acid?
hydrochloric acid
phosphoric acid
nitrous acid
sulfuric acid
Answer:
phosphoric
Explanation:
pls mark me as brainliest
Answer:
hydrochloric acid is a substance that is a binary acid .
marke a brainlistDraw out a Simple electro Chemical Symbols in ions
Answer:
In redox reactions, electrons are transferred from one species to another. If the reaction is spontaneous, energy is released, which can then be used to do useful work. To harness this energy, the reaction must be split into two separate half reactions: the oxidation and reduction reactions. The reactions are put into two different containers and a wire is used to drive the electrons from one side to the other. In doing so, a Voltaic/ Galvanic Cell is created.
Explanation:
When a redox reaction takes place, electrons are transferred from one species to the other. If the reaction is spontaneous, energy is released, which can be used to do work. Consider the reaction of a solid copper (Cu(s)) in a silver nitrate solution (AgNO3(s)).
he AgNO3(s) dissociates in water to produce Ag+(aq) ions and NO−3(aq) ions. The NO3-(aq) ions can be ignored since they are spectator ions and do not participate in the reaction. In this reaction, a copper electrode is placed into a solution containing silver ions. The Ag+(aq) will readily oxidize Cu(s) resulting in Cu2+(aq), while reducing itself to Ag(s).
This reaction releases energy. When the copper electrode solid is placed directly into a silver nitrate solution, however, the energy is lost as heat and cannot be used to do work. In order to harness this energy and use it do useful work, we must split the reaction into two separate half reactions; The oxidation and reduction reactions. A wire connects the two reactions and allows electrons to flow from one side to the other. In doing so, we have created a Voltaic/ Galvanic Cell.
which function of lysosomes is carried out by vacuoles in plant cells
Answer:
Lysosomes are predominantly found in eukaryotic animal cells and are responsible for breaking down cellular debris
Explanation:
Whats minimum temperature for scrabble eggs
Answer:
of 160° F. Scrambled eggs need to be cooked until firm throughout with no visible liquid egg remaining.
hope it's help you.
Answer:
144-158°
Explanation:
O2– has how many electrons?
Answer:
eight electrons
Explanation:
Oxygen has atomic number eight. This means that the nuclei of all oxygen atoms have eight protons. A neutral oxygen atom will also have eight electrons. In an oxygen ion with a 2− charge, the number of protons is still 8, but the number of electrons is 10.
Name the reaction & mechanism of the following reactions:
Answer:
double displacement reaction
Answer:
DECOMPOSITION REACTIONDOUBLE DISPLACEMENT REACTIONDISPLACEMENT REACTIONExplanation:
SEE THE IMAGE FOR SOLUTION
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A 18.5-mL sample of a glucose IV solution has a mass of 19.1 g. What is the density of the glucose solution ?
Answer: 1.0324(g/ml)
We have the formula [tex]m = Vd[/tex]
Where m is the mass, V is the volume, and d is the density
Divide both sides by V, we get [tex]d=\frac{m}{V}=\frac{19.1}{18.5} = 1.0324 (g/ml)[/tex]
Using the venn diagram, determine the similarities and differences between analytical chemistry and chemical analysis
Answer:
Explanation:
Modern analytical chemistry can be defined as a science concerned with the development of general approaches, methods, and tools for the study of chemical compositions of substances and analysis of objects; chemical analysis is restricted to the acquisition of information about chemical compositions of substances.
Which of the following describes an atom?
A. smallish units of two hydrogen joined together
B. 6 protons six neutrons in the nucleus and six electrons in the electron cloud
C. hydrogen chemically combined with an oxygen
D. 6 protons 6 neutrons in the nucleus and seven electrons in the electron cloud
Answer:
Correct answer is option (3) .
Explanation:
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what are the properties of alkali earth metals
Properties of the Akali Earth Metals.
They have low melting points.They have low boiling points.They are shiny in nature.They are generally Silvery-white in colour.They have low densities.They are highly metallic.They are good conductors of electricity.They are strong reducing agents.They are highly reactive.[tex] \\ [/tex]
The first ionization energy of Mg is 735 kJ/mol. The second ionization energy is Select one: a. 735 kJ/mol b. less than 735 kJ/mol c. greater than 735 kJ/mol d. More information is needed to answer this question. e. None of these.
Taking into account the definition of ionization energy, the correct answer is option c: greater than 735 kJ/mol.
Electrons are held in atoms by their attraction to the nucleus, which means that energy is needed to remove an electron from the atom.
Ionization energy, also called ionization potential, is the necessary energy that must be supplied to a neutral, gaseous, ground-state atom to remove an electron from an atom. When an electron is removed from a neutral atom, a cation with a charge equal to +1 is formed.
The further away the electron is from the nucleus, the easier it is to remove it, that is, the less energy is needed.
The second ionization energy represents the energy required to start a second electron. Its value is always greater than the first ionization energy because the volume of a positive ion is less than that of the neutral atom and the electrostatic force is greater in the positive ion than in the atom.
In other words, the energy required to remove a second electron is called the second ionization energy, and due to the difficulty of removing an electron from a positive particle, its value is greater than that of the first ionization energy.
Finally, the correct answer is option c: greater than 735 kJ/mol.
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https://brainly.com/question/16243729?referrer=searchResultshttps://brainly.com/question/11623163?referrer=searchResultshttps://brainly.com/question/1602374?referrer=searchResultsWhy would a line graph be better to show the relationship between predator and prey birds in an ecosystem than a circle graph?
A. A circle graph would be better to show this relationship.
B.The number of the two classes stays the same over time.
C.The number of the two classes changes over time.
D.None of the above.
Answer:
C
Explanation:
Line graphs are better to show the relations between over time, as circle shows the amount or present of something in a cert time
what is chlorine anyone tell
Answer:
A toxic, green, gaseous chemical element (symbol Cl) with an atomic number of 17.