Answers
It is incorrect because it should have a total of eight electrons with two electrons between each H and O
Further explanationLewis structure shows the form of bonds that occur in the valence electrons of an element or compound
This bonding usually occurs in covalent bonds
Valence electrons are electrons used in a chemical bond
The main group elements usually have valence electron configurations in the ns and np subshells, While the transition elements in the subshells (n-1) d and ns.
Element O has 6 valence electrons
Element H has 1 valence electron
To achieve stability, the element O needs 2 more electrons which are obtained from 2 electrons from the H element, while the H element needs 1 electron to be stable
So that a covalent bond is formed
Related Questions
Which of the following sets of data could match the unknown element?
Answers
Answer:
✔️Metalliod, Mass: 73
Explanation:
The unknown element that is represented in the Periodic table is Germanium (Ge). It is in Group 14(IVA) and Period 4 of the periodic table. It is a metalloid and a silvery-gray substance. It's properties are intermediate between metals and nonmetals. It has a mass of 73 and an atomic number of 32.
Cone shaped mountains form as a result of which one of these events?
Answers
Answer:
Volcanic Eruptions
Explanation:
It says in the question
Driving automobiles and burning coal for electricity are examples of two human activities that negatively impact _______.
Answers
Answer:
I think its pollution?
the boiling point of ethanol is 78.40 C. A student conducts an experiment and finds a boiling point of 75.70 C. What is the student's
percent error ?
Answers
Answer:
3.40% corrected to 1dp
Explanation:
78.4-75.7=2.7
percentage error = error/original value× 100
= 2.7/78.40×100
= 3.44387755102040
= 3.40% corrected to 1dp
what is biogas, biomass and biodigester
Answers
Answer:
Biogas is a type of biofuel that is naturally produced from the decomposition of organic waste. When organic matter, such as food scraps and animal waste, break down in an anaerobic environment (an environment absent of oxygen) they release a blend of gases, primarily methane and carbon dioxide.
Explanation:
Biomass is renewable organic material that comes from plants and animals. ... Biomass contains stored chemical energy from the sun. Plants produce biomass through photosynthesis. Biomass can be burned directly for heat or converted to renewable liquid and gaseous fuels through various processes.biodigester is like a mechanical stomach. It is fed with organic material, which is broken down (decomposed) by micro-organisms (bacteria) is an oxygen-free (anaerobic) environment to produce a renewable energy called biogas (methane and carbon dioxide) and other material that is mainly used as fertilizer.
Explanation:
Biogas is a type of biofuel that is naturally produced from the decomposition of organic waste.
Biomass is plant or animal material used for energy production, or in various industrial processes as raw substance for a range of products.
A Biodigester simply means a tank which digests organic material biologically. In this sense, the FilterPod is a biodigester. However, many people think of a biodigester as a tank which digests, anaerobically, without air, organic material and produces methane gas for cooking, lighting and heating ect.
Pioneer species like Lichens and Mosses inhabit an area after a major disturbance, such as a volcanic eruption. Over time, other species are found in the disturbed areas, and the number of pioneer species decreases. Why does the number of pioneer species get less?
Answers
Answer:
The number of pioneer species get less as the area has more soil to support complex plants and the competition decreases the role of pioneer species.
Explanation:
Pioneer species like Lichens and Mosses inhabit an area after a major disturbance, such as a volcanic eruption. However, with time the number of pioneer species decreases.
The number of pioneer species get less as the area has more soil to support complex plants and the competition decreases the role of pioneer species.
please hurry asap I WILL MARK BRAINLEST
The Statue of Liberty is made out of copper and was once shiny and copper-colored. Over the years, the copper has gone through a process called oxidation, where it has changed into a new material.
What has occurred?
an endothermic reaction
an energy formation
a chemical reaction
a precipitate formation
Answers
Answer:
an endothermic reaction
Explanation:
An endothermic reaction has occurred.
Answer:
endothermic
Explanation:
took the quiz
what is atomic radius
Answers
Explanation:
The atomic radius of a chemical element is a measure of the size of its atoms, usually the mean or typical distance from the center of the nucleus to the boundary of the surrounding shells of electrons. Since the boundary is not a well-defined physical entity, there are various non-equivalent definitions of atomic radius. Three widely used definitions of atomic radius are: Van der Waals radius, ionic radius, and covalent radius
Which of these statements about density is NOT true? a The density of a block of substance A equals 10.0 g/cm3. If I cut the block in half, its density will equal 10.0 g/cm3. b A cubic meter of bricks is more dense than a cubic meter of feathers. c It is possible to identify a substance by its density. d The density of a substance is always the same, regardless of temperature.
Answers
Answer:
d. The density of a substance is always the same, regardless of temperature.
Explanation:
Density is a characteristic property of water and defined as the mass per unit volume.
The density of a substance always remains the same at the same temperature regardless of the size of the sample. The density of the sample changes with temperature and pressure. for example : The density of a substance increases with a decrease in temperature as the volume increases.
Hence, the statement about density is not true is " d. The density of a substance is always the same, regardless of temperature."
Which phrase best describes igneous rocks?
form when lava and magma cool
accumulate sediments following erosion
require heat and pressure to be formed
consist of many sediment layers
ctivity
Answers
Answer:
A) form when lava and magma cool
please give me brainliest :p
God bless!
Answer:
A: form when lava and magma cools
Explanation:
Got it right on Edge 2020 :)
True or false
Each family represents the number of energy levels present in an atom of the element.
Answers
Answer:
true because of the elements
Describe the relationship between an element and a compound.
Answers
Answer:
An element is a material that consist of a single type of atom . each atom type contains same number of protons . chemical bonds link elements to form more complex molecules called compound A compound consist of two or more elements held together by covalent or ionic bonds.
are you clear?
Students were given four unknown substances and asked to observe their
characteristics. Their observations are shown in the table below:
Which of the unknown substances is MOST likely a metal?
Answers
Answer:
b
Explanation:
Not all protists use flagella or cilia to move. Give an example of another way protists move and identify the type of protist that uses that mode of movement.
Answers
Answer: One of the most striking features of many protist species is the presence of some type of locomotory organelle, easily visible under a light microscope. A few forms can move by gliding or floating, although the vast majority move by means of “whips” or small “hairs” known as flagella or cilia, respectively. (Those organelles give their names to informal groups—flagellates and ciliates—of protists.) A lesser number of protists employ pseudopodia. Those same organelles may be used in feeding as well.
Explanation:
Rainforests are located in the latitudes that have the classification A) continental. B) subarctic. C) temperate. D) tropical.
Answers
Answer:
D
Explanation:
Rainforests are tropical.
What do eukaryotic cells, prokaryotic cells and viruses all have in common?
Answers
Answer:
Like a prokaryotic cell, a eukaryotic cell has a plasma membrane, cytoplasm, and ribosomes, but a eukaryotic cell is typically larger than a prokaryotic cell, has a true nucleus (meaning its DNA is surrounded by a membrane), and has other membrane-bound organelles that allow for compartmentalization of functions.
Explanation:
is this okay???
what this pic meaning ?
Answers
Step 2: Separate particles of the solvent from each other
Step 3: Combine separated solute and solvent particles to make solution
What is the one way that the thermal energy of a system can be explained?
Answers
Answer: here is 1 way:
Explanation:
Meh explaination :1. Thermal energy refers to the energy contained within a system that is responsible for its temperature. Heat is the flow of thermal energy. A whole branch of physics, thermodynamics, deals with how heat is transferred between different systems and how work is done in the process (see the 1ˢᵗ law of thermodynamics).
Easy explaination:2. The energy of motion in the molecules of a substance.
Hard explanation: 3. Thermal energy is defined as the total of all kinetic energies within a given system.
Hope this helps!;)
Rank the three elements according to their electronegativity,
from highest to lowest:
Fluorine (F), Silicon (Si), Chlorine (CI)
Answers
Answer:
F, Si, Cl
Explanation:
The flow of the electronegativity is up and far left. Therefore, the highest amount is in the far left and up because that is the trend. You can look up a graph on google showing the trend.
An unknown metal cation (alias, M) contains 26 total electrons. It forms an ionic compound
with sulfide with the formula MS. What is the symbol of the cation?
*When writing the cation, write the symbol, put in 1 space, then the charge.
Example: Fe2+ would be written Fe 2+
Answers
Answer:
sulfide is S 2- so it will be M 2+
What is the mass of 0.250 mol of chlorotrifluoromethane, CCIF3?
A. 26.1 g
B. 104 g
C. 4.78 x 10-3 g
D. 52.2g
Answers
Answer:
26.1g
Explanation:
Cclf3
=35.5
F=54/101.5
Mass=mol*mm
=0.25*1015
=26.1g
1. Write chemical reaction of burning of magnesium
2. Discuss about the reactivity of magnesium
3. Discuss the nature of magnesium oxide whether it is acidic or basic.
4. What will happen?. When magnesium oxide dissolved in water and tested by red litmus.
5. When Mg burns, which type of flame is obtained.
pls answer which u can
Answers
Answer:
1.Mg+O2.......MgO2
Explanation:
2.Very reactive towards halogens and reacts with water at room temperature. 3, Magnesium oxide is a simple basic oxide. 4.It will react with water to form magnesium hydroxide which is a base turning red litmus to blue 5.should be white. hope it helped. I help people although when I post a question it is left unanswered and then gets answers after two days when I don't really need it
Which isotope has 45 neutrons?
O A. 80,36KT
OB. 80,35Br
O C. 78,345e
O D. 34,17C1
Answers
Answer:
Br.
neutron = mass number - atomic number
youcan see the answer at the pic
The isotope that has 45 neutrons is B. 80,35Br.
What is the isotope?The neutron can be obtained by subtracting the protons from the mass number. In the question, we have a proton that is numbered, 35 and a mass number of 80.
So, to get the neutron, we would subtract the protons from the mass number as follows;
80 - 35 = 45. The element that is described by this data is Bromine. Therefore, the correct option number is B. 80,35Br.
Learn more about isotopes here:
https://brainly.com/question/14220416
#SPJ6
3. The nucleus:
a. controls all the cell activities
b. controls only part of the cell
c. does not have any activity
Answers
Answer:
a. controls all the cell activities.Thank you ☺️
Choose the best statement of the octet rule from those listed below atoms lose 8 electrons to become valent atoms lose 8 electrons to become valent, atoms want 8 valence electrons atoms want 8 valence electrons atoms tend to react until they have 8 valence electrons atoms tend to react until they have 8 valence electrons, atoms tend to react in order to have the s2p4 configuration atoms tend to react in order to have the s2p4 configuration, atoms tend to react in order to gain 8 valence electrons atoms tend to react in order to gain 8 valence electrons
Answers
Answer:
atoms tend to react in order to gain 8 valence electrons
Explanation:
The octet rule describes the tendency of atoms of elements to react in order to have eight electrons in their valence shell. This is because having eight valence electrons confers stability to the atoms of these elements in the compounds they form.
The octet rule only does not apply to the transition elements or the inner transition elements as only the s and p electrons are involved. the electronic configuration in atoms having an octet is s²p⁶.
For example, sodium atom has one valence electron in its valence shell but a complete octet in the inner shell; it will react with chlorine atom which has seven valence electrons to form a stable compound, sodium chloride by donating its one valence electron in order to have an octet. Similarly, the chlorine atom will then have an octet by accepting the one electron from sodium atom.
What evidence suggests that four-legged animals came from fish?
Answers
Answer:
Paleontologists have uncovered new fossils from Tiktaalik roseae, which, while still a fish, is considered a transitional fossil that also has traits common to the first four-footed animals. This more complete picture of Tiktaalik suggests that the creature had strong, mobile hind fins.
Explanation:
hope this helps :P
which of the following is a state of matter ? particle,thermal,plasma, and diffuse ?
Answers
Answer:
a particle
Explanation:
matter takes up space, and particles take place in atoms
Answer:
plasma is a state of matter
All of the following are examples of making physical changes EXCEPT:
A:painting walls
b:Making ice cubes
C:Making oxygen out of water
D:chopping wood
Answers
Have a good day :)
Which RNA strand would match with this DNA strand?
AGGCTAAT
Answers
What is the DNA strand? You have not named it.
In order for a gas to condense to a liquid, the attraction between its molecules _____.
Answers
Answer:
._______.
Explanation:
Explanation:
The forces of attraction between one individual molecule and another. ... Gas phase molecules will in turn condense. ... The vapor pressure of a molecular substance depends on the strength of its ... If the external pressure on a liquid is increased, the vapor pressure of the liquid must___ in order for the liquid to boil.