Answer:
Heavy stars turn into supernovae, neutron stars and black holes whereas average stars like the sun end life as a white dwarf surrounded by a disappearing planetary nebula. All stars, however, follow roughly the same basic seven-stage life cycle, starting as a gas cloud and ending as a star remnant.
what are possible components of ionic compounds? check all that apply.
Answer:
a metal and a polyatomic anion
metal and a nonmetal
Answer:
A Metal and a Nonmetal
a Metal and a Polyatomic metal
Explanation:
Edge 2021
a ionic bond is the strongest of the three major bonds. due to its strong lattice structure. a metallic bond is the weakest of the three due to the sea of electrons. what determines the strength of metallic bonds?
The strength of metallic bonds is dependent on the protons, delocalized electrons and ions.
The strength of a metallic bond is dependent on:
The number of protons: The higher the number of protons the more stronger the bond.Delocalized electrons: The higher the number of delocalized electrons the more the stronger the bond.Ion: The smaller the size of the ion, the stronger the bond.The strength of metallic bonds is dependent on the protons, delocalized electrons and ions.
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once the ice cube melts, what happens to the liquid water that it produces?
Answer:
The ice shrinks (decreases volume) and becomes more dense. The ice density will increase from . 92g/cm^3 to that of liquid water (1g/cm^3).
Explanation:
Why is a crystal of Strontium chloride described as an extended structure?
Answer:
Explanation:
Chloride is described as an extended structure because its atoms are arranged following an endless repeating pattern and are of distinct ratio
Crystals and polymers mostly form extended structures as seen in the formation of sodium chloride whereby the ions in the compound are arranged following a repeating pattern. ( i.e. has a giant ionic structure ).
Chloride is a considered an extended structure because in sodium chloride it forms an unending repeated pattern of ions which makes it a perfect example of an extended structure.
Hence we can conclude that Chloride can be described as an extended structure because its atoms are arranged following a repeating pattern and are of distinct ratio.
Crystal of Strontium chloride is described as an extended structure because it is arranged in a repeating pattern.
Crystals form extended structures means a group of atoms or molecules in a distinct ratio that are present in a repeating pattern. Crystals are made up of atoms of one element that grouped together or can be made up of molecules grouped together.
Due to repeating pattern and constant ratio of strontium chloride then it is considered as repeating structure so we can conclude that Crystal of Strontium chloride is considered as an extended structure due to its arrangement in a repeating pattern.
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What are the safety precaution you must do to avoid contamination of the specimen in microscope?
Answer:
Clean the microscope after each use. ...
Handle glass slides carefully. ...
Turn off the light source when the microscope is not in use. ...
Be aware if your microscope has a mercury lamp. ...
When carrying the microscope, always use two hands with one hand supporting the base and theother hand holding the arm.
Explanation:
:)
What led to the increase in steel consumption seen on the graph?
The cause that led to the increase in steel consumption seen in the graph is the increase in population.
In the graph, you can see the relationship between the millions of people and steel consumption and the centuries. The graph shows that population growth between 1700 and 1900 was minimal because it did not exceed 100 million people.
From 1900 onwards the population began to grow from 100 million to 600 million.
On the other hand, steel began to be exploited in the mid-1800s and until 1900 it had not exceeded 100 million tons. After 1900 it increased rapidly to 250 million tons and by the year 2000, it had already exceeded 700 tons.
According to the above, it can be inferred that the growth of steel consumption was influenced by the growth of the population.
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Holding your hand over a hot plate is an example of
because
Answer:
It ia a example of the heat going onto your hand has you take it out of the microwave touching the plate would just be hurt and probably hurt theres your answer ig?
Explanation:
Answer:
it is an example of convection.
Explanation:
convection is the transfer of heat without touching the substance.
Reaction rate factors
Not much to go by but if you could help please do
Answer:
Sorry I can't
Explanation:
Throughout his career Newton had conflict with _____.
John Dalton
Mendeleev
Neil Bohr
Robert Hooke
What is the chemical equation for foam fight
Answer:
Hydrogen Peroxide
Explanation:
does the law of conservation of mass apply to physical changes
Answer:
yes
Explanation:
Section 1 What is energy? is the ability to cause change. A. B. Energy from motion is energy 1. Kinetic energy increases as an object moves 2. Kinetic energy increases as the of an object increases. energy. C. Energy stored in an object due to its position is energy. D. Energy comes in different 1. Energy that increases as temperature increases is 2 energy-energy stored in chemical bonds 3. energy-light energy 4. Energy from electricity is energy 5. The nucleus of an atom contains energy
Answer:
Kinetic energy
Kinetic energy is the motion of waves, electrons, atoms, molecules, substances, and objects.Explanation:
Describe the nitrogen cycle
The nitrogen cycle is a repeating cycle of processes during which nitrogen moves through both living and non-living things: the atmosphere, soil, water, plants, animals and bacteria. In order to move through the different parts of the cycle, nitrogen must change forms. The nitrogen cycle is the biogeochemical cycle by which nitrogen is converted into multiple chemical forms as it circulates among atmosphere, terrestrial, and marine ecosystems. Important processes in the nitrogen cycle include fixation, ammonification, nitrification, and denitrification.
Hope this helps, have a nice day! :)
A student wants to perform an experiment to study the relationship between the temperature and pressure of an enclosed gas. In one or two sentences, describe two assumptions that must be made in performing this experiment.(2 points)
BoldItalicUnderline
Answer:
Volume stays constant
Explanation:
1. Describe What happens to a hydrogen
atom in an acid when the acid is dissolved
in water?
Answer:
The H+ atoms will become neutralized by the OH- ions in the water. This is due to the fact that when acids are dissovled in water, they give H+ ions (Hydrogen ions). When the H+ ions from the acid join with the OH- ions in the base (water), they'll become neutralized and form H₂O (Water molecule).
Boron is a brittle, black_______ that can be used to
make cookware.
Answer:
Metalloid/Solid
Explanation:
What Happens During Fermentation?
Answer:
Fermentation is a metabolic process in which an organism converts a carbohydrate, such as starch or a sugar, into an alcohol or an acid. For example, yeast performs fermentation to obtain energy by converting sugar into alcohol.
Sometimes bacteria perform fermentation, converting carbohydrates into lactic acid...
You can look up videos of yeast fermentation in apple juice.
A sample of a gas in a 4 L container at 300 K has a pressure of 1 atm. If the temperature is increased to 600 K and the volume is decreased to 2 L, the pressure is likely to be closest to which of the following?
0.5 atm
в
1 atm
с
2 atm
D
4 atm
Answer:
Explanation:
Did u ever get the answer?
what type of functional group is produced after a dehydration reaction of an alcohol?
Answer:CnH2n+1OH → CnH2n + H2O
CH2OH-CH2OH → CH3CHO + H2O
CH2OH-CHOH-CH2OH → CH2=CH-CHO + 2H2O
ROH + ROH → ROR + H2O
ROH + R’OH → ROR’ + H2O
Explanation:
What character of the actual elements (aluminum, silicon, oxygen) present in alumina and silica cause the stationary phase to be very polar?.
Answer:
aluminum and silicon and the electronegative character of the oxygen.
Explanation:
.
The electronegative character of alumina and silica and the electropositive character of oxygen causes the stationary phase to be very polar.
What are electronegative?Electronegativity is defined as the tendency for an atom of a given chemical element to attract shared electrons or electron density when forming a chemical bond.
Non metals are usually an electronegative elements.
Electro positivity is defined as the tendency for an element to lose the electron to form a positive ions.
It is also known as metallic character. Metals are usually an electropositive elements.
Thus, the electronegative character of alumina and silica and the electropositive character of oxygen causes the stationary phase to be very polar.
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What is the title with a "salt" compound?
Answer:
Sodium chloride, I think
Explanation:
Salt's compound name is sodium chloride
7. What type of material transmits the most light
Answer:
transparent
Explanation:
hey! needing some help with this
Answer: Holmium-165 = Er-165 + electron
Explanation:
Beta decay is the decay of a neutron into a proton and electron. This will increase the number of protons in the Holmium nucleus by one, making it Er, Erbium, with the same atomic mass.
Holmium-165 = Er-165 + electron
The mass is essentially the same, as the proton is assigned the same mass as the neutron it came from.
In three to five sentences, predict the bonding activity of magnesium (mg) and chlorine (Cl). Why do you think they would bond that way?
Answer:
Magnesium and Chlorine have a great difference in there electronegativies. Due to this, they will form an ionic bond. Magnesium has 2 valence electrons and chlorine has 7. Therefore, two magnesium atoms will give one electron to one chorine atom, making the chlorine atom stable.
The bonding activity of magnesium (mg) and chlorine (Cl) will lead to ionic bonding.
It should be noted that Magnesium and Chlorine have a great difference in their electronegative and this will lead to the formation of an ionic bond.
Magnesium has 2 valence electrons while chlorine has 7 valence electrons. In such a case, the two magnesium atoms will give one electron to one chlorine atom. This is vital for making the chlorine atom stable.
In conclusion, an ionic bond will be formed between them.
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A protected artificial or natural lake that is used to store water for human use is known as a(n)
A.reservoir
B.aquifer
C.watershed
is a protected artificial or natural lake that is used to store water for human use is known as an Reservoir .
how long does it take to thaw a turkey in the refrigerator?
Answer:
24 hours of thawing it out in the fridge for every 5 pounds
Explanation:
Which one of the following is not a diatomic gasChlorineNeonNitrogenHydrogen
i need help solving this
Answer:
4
Explanation:
9.7-8.65=1.05
But significant figure rules mean use only the smallest number of significant figures. 9.7 has 2 and 8.65 has 3, so your answer can only have 2 sig figs.
So round 1.05 to 2 figures and you get 1.1
37. What name is given to the process in which mineral crystals change during metamorphism
What is the overall charge ofanion that has 15 protons, 18 electrons and 17 neutrons?
Answer:
-3
Explanation:
What is the overall charge of anion that has 15 protons, 18 electrons and 17 neutrons?
ONLY CHARGED PARTICLES CONTRIBUTE TO THE OVERALL CHARGE, SO
+15 -18 = -3 OVERALL CHARGE
Remember
Proton=+veElectron=-veNeutron=0(neutral)Total charge
No of protons+No of electrons15-18-3