Answer:
A ) 1, 2 and 3
Explanation:
1 ) is correct because,
K donates 1 electron
F gain 1 electron from K.
If donating and gaining of electrons takes place between two electron, then type of compound formed is ionic.
2 ) is correct because,
K + F -----> KF
3 ) is correct because,
KF is soluble in cold water; very soluble in hot water.
Select the answer that completes each statement.
The
founded the Virginia colony.
The
government took over the Virginia colony because too many colonists had died.
and
worked on the tobacco plantations.
The
was the first elective governing body in a British colony.
Answer:
1 colonists
2 England
3 slaves
4 the House of Burgesses
Answer:
:)
Explanation:
Someone pls help me I will make you brain
Answer:
I would go with the first option. It shows how people having been releasing more and more carbon dioxide into the atmosphere.
Explanation:
Use the diagram to identify each item.
Explanation:
atomic no. is 42
chemical symbol is Mo
no. of protons is 42
atomic mass is 95.95
no. of electrons is 42
no. of electron in outer most shell is 1
no of electrons in the n 3 shell is 18
no. of neutron is 96
The element molybdenum is 42nd element in periodic table with the symbol Mo and a mass of 96. It have 42 electrons and 42 protons.
What is Molybdenum?Molybdenum (Mo) is a transition metal in periodic table included in the d-block. The atomic number of molybdenum is 42 which is the number of protons and electrons in it.
The atomic number of a neutral atom is equal to the number of electrons in it. For a neutral atom the number of electrons and protons are equal and thus the number of both electrons and protons in Mo is 42.
Mass number is the sum of number protons and neutrons in an atom. The mass number of Mo is 96 and number of protons is 42. Thus, the number of neutrons is 96 -42 = 54.
The outer shells of Mo are 4d and 5s containing 4 and 2 electrons respectively. Thus the number of outer electrons is 6.The level n= 3 is M shell which contains 18 electrons for Mo.
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Question 5
The energy produced by a generator can BEST be described as
A thermal
B chemical
C nuclear
D kinetic
E electrical
Answer:
E- Electrical
Explanation:
It converts mechanical energy to electrical energy
Is it _________
To view _______ eclipse without eve protection.
A.Unsafe, lunar
B.Safe, solar
C.Unsafe, solar
D.Unsafe new moon
Answer:
unsafe, solar
Explanation:
A lunar eclipse covers the moon which is safe to look at. New Moon, again is simply the moon. However, we should never look at the sun, eclipsed or not!
Answer:
C, it is unsafe to view solar
without eye protection
Look at the image shown.
Two H are written with a horizontal straight line between them. (H-H)
What does this image represent?
Linear molecule with one domain
Linear molecule with two domains
Tetrahedral molecule with four domains
Trigonal planar molecule with three domains
Explanation:
It is known that an electron pair represents a domain. Hybridization of BF_{3}BF3 will be calculated as follows.
Hybridization = \frac{1}{2}[\text{Valence electrons of central atom + no. of bonded atoms + negative charge - positive charge}]21[Valence electrons of central atom + no. of bonded atoms + negative charge - positive charge]
Valence electrons of boron are 3 and no. of bonded atoms in a BF_{3}BF3 molecule is 3.
Therefore, calculate hybridization of BF_{3}BF3 as follows.
Hybridization = \frac{1}{2}[\text{Valence electrons of central atom + no. of bonded atoms + negative charge - positive charge}]21[Valence electrons of central atom + no. of bonded atoms + negative charge - positive charge]
= \frac{1}{2}[3 + 3 + 0]21[3+3+0]
= 3
Hence, hybridization of BF_{3}BF3 is sp^{2}sp2 , that is, trigonal planar.
Thus, we can conclude that the given image represents that it is a trigonal planar molecule with three domains.
Answer:
electron pair => 1 covalent bond => same as H:H
Explanation:
The bar notation is generally accepted as a pair of electrons depicting a 'single' chemical bond. If two bars are shown (e.g; C=C) then two chemical bonds are represented. If three bars are shown (e.g; N≡N) then three chemical bonds are represented. This is the highest number of bonds that can exist between two elements. Hope this helps. :-)
What describes a chemical reaction?
Answer:
A chemical reaction is a process where two different substances or elements are mixed together. They then undergo some sort of chemical change to become a different substance altogether.
Explanation:
how do anion formation and valence electrons relate?
Answer:
A cation is formed when a metal ion loses a valence electron while an anion is formed when a non-metal gains a valence electron. They both achieve a more stable electronic configuration through this exchange.
Answer:
A cation is formed when a metal ion loses a valence electron while an anion is formed when a non-metal gains a valence electron. They both achieve a more stable electronic configuration through this exchange.
Explanation:
Hope I helped!
What happens to the wavelength and frequency of light as you move from red to violet?
A. Both wavelength and frequency increases.
B. Both wavelength and frequency decreases.
C. Wavelength decreases and frequency increases.
D. Wavelength increases and frequency decreases.
Hi! I could use some help, I need to turn this in today
Each of these Ionic Compounds are named INCORRECTLY.
1. Find and describe the mistake
2. Correctly name the compound.
CaCl2 - Calcium Chlorine
CuS - Copper Sulfide
Li3P - Trilithium Phosphide
CuBr - Copper(II) Bromide
NaOH - Sodium Hydrogen Oxide
Explanation:
The nomenclature of ionic compounds is given by:
1. Positive is written first. And if the metal atom has various oxidation states then its oxidation state is to be mentioned in brackets with help of roman numbers
2. The negative ion is written next and a suffix is added at the end of the negative ion. The suffix written is '-ide'.
1.) : Calcium chloride (Correct)
In the given compound, calcium has oxidation state of +2 and chlorine has oxidation state of -1.The name is correct.
2.) : Copper (II) oxide (Incorrect)
In the given compound,copper has the oxidation state of +1 and oxygen has oxidation state of -2.So ,the correct name will be Copper (I) oxide.
3.) : Lead (II) sulfide (Incorrect)
In the given compound, lead has the oxidation state of +4 and sulfur has oxidation state of -2. So ,the correct name will be Lead (IV) sulfide.
what is a chemical reaction of sulfric acid?
Sulfuric acid reacts violently with alcohol and water to release heat. It reacts with most metals, particularly when diluted with water, to form flammable hydrogen gas, which may create an explosion hazard. ... Hazardous decomposition products are as follows: sulfur dioxide, sulfur trioxide, and sulfuric acid fumes.
it acts violently with water or alcohol to release some heat, it does react to most metals, mostly when diluted with water to form flammable hydrogen gases, which may create an explosion hazard.
(i tried to make the g00gle answer less complicated) :)
which word best describes a substance where its atoms and molecules are moving very fast?
Answer:
solids
Explanation:
because in ice for instance the molecules and atoms are shivering so the move fast to stay warm
If you were to mass the reactants before a reaction and then mass the products after the reaction what would you expect to find and why?
pls answer fast ill give brainliest!
Answer:
No change...
Explanation:
The law of conservation of mass states that matter cannot be created or destroyed in a chemical reaction. For example, when wood burns, the mass of the soot, ashes, and gases equals the original mass of the charcoal and the oxygen when it first reacted. So the mass of the product equals the mass of the reactant.
Mark as Brainliest please...
Someone pls help me I will make you brain
Answer:
lll and ll
Explanation:
Since sodium chloride is classified as a compound, a sample of it contains
A. atoms that are gases, liquids, and solids.
O
B. more than one kind of atom.
C. matter that cannot be reduced to atoms.
O
D. a solution of atoms and molecules.
Answer:
more than one kind of atom. a solution of atoms and molecules.
Explanation:
a compound always contains more than one type of atom.
Although the formula for sodium chloride is NaCl, the compound does not contain actual NaCl molecules. Rather, it contains equal numbers of sodium ions with a charge of positive one (Na+) and chloride ions with a charge of negative one (Cl−).
viết pthh xảy ra khi oxi phản ứng với kim loại K, Mg, Al
Answer:
nnnnnnnnnnnnnnnnnnnnnn
Explanation:
jhhhhhhhhhhhhhhhhbhhhh
the reaction of zinc metal and hydrochloric acid produces hydrogen gas and zinc chloride. true or false?
Answer:
true.
Explanation:
Zn(s) + 2HCI(aq)=H2(g)+ZnCl2(g)
a 200 g of sugar was dissolved in 100 ml of water describe the solution
A.diluted
B.concentrated
C. sweet
D. very sweet
................... answer.........pls........
Answer:
b
Explanation:
mark me as brainliest have a great day
Which of the operations results in sublimation?
Answer:
hrjfnd
Explanation:
hfhdhfujduejdjdjdbfudbdjdbdifhdudjdufb
. Describe the differences and similarities between the molecules of carbon monoxide, diatomic oxygen and carbon dioxide. Which two appear most alike?
Explanation:
Though both the molecules contain carbon and oxygen, the general difference between them lies in their number of oxygen of atoms carried by them; as carbon dioxide (CO2) has one carbon atom and two oxygen atoms, while carbon monoxide (CO) has one carbon and one oxygen atom.
Carbon Dioxide is naturally present in our atmosphere and as it is excreted out during the process breathing by the animals and humans. On the other hand, Carbon Monoxide is toxic, and it produces suffocation if it builds while incomplete combustion of coal, fossil fuels, etc.
In the layman language, both the terms are sometimes used interchangeably and create confusion. As they have few similarities and incorporates carbon and oxygen as well, and are the byproducts of the things which carry carbon like fuels, coals, woods, and natural gas.
We all are aware of the three states of matter, which are Solid, Liquid and Gas. In this context, we will be discussing the two most common gases present in our atmosphere, how they vary from each other, their effects and their similarities. These gases are Carbon Dioxide and Carbon Monoxide.
Answer:
The major similarities between molecules of carbon monoxide, diatomic oxygen and carbon dioxide is that they all exist in gaseous states in their natural forms. Each of them also have low molecular weight of less than 70g/mol.
The difference between them is that the carbon monoxide is formed from incomplete combustion and is a toxic gas while carbon dioxide is an end product of respiration and is used by plants for photosynthesis. Oxygen on the other hand is essential for respiration and is the end product of photosynthesis.
Carbon dioxide and Carbon monoxide look most alike as they have the same elements which include Carbon and Oxygen but only different in the number of atom composition
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Someone pls help me I will make you brain
Answer:
I believe your answer is B.) I hope this helps.
This atom tends to gain an electron in its outer shell so that there are a total of 8 electrons.
oh its a Chlorine isn't it....
it's electronic configuration is
2,8,7
so to make it 8 in its outermost shell it should gain 1 electron...
How many grams are in 2.5 moles of dicarbon hexahydride?
Round to 2 significant figures!
There are 75 grams in 2.5 moles of dicarbon hexahydride (C₂H₆).
The given parameters;
dicarbon hexahydride = [tex]C_2H_6[/tex] number of moles of the dicarbon hexahydride = 2.5 molesThe molecular mass of dicarbon hexahydride is calculated as follows;
Mw = C₂H₆ = (2 x 12) + (6 x 1)
Mw =30 g/mol
The mass of the dicarbon hexahydride in the given number of moles is calculated as follows;
mass = n x Mw
mass = 2.5 x 30
mass = 75 g
Thus, we can conclude that there are 75 grams in 2.5 moles of dicarbon hexahydride (C₂H₆).
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Find the number of protons, neutrons, and electrons for hydrogen-1, hydrogen-2, and hydrogen-3 respectively.
Answer:
Protons Neutron Electrons
hydrogen-1 1 0 1
hydrogen-2 1 1 1
hydrogen-3 1 2 1
Explanation:
hydrogen-1, hydrogen-2, and hydrogen-3 are all isotopes.
Isotopes have the same number of protons but a varying number of neutrons. Protons = Electrons.
Groundwater that soaks into the ground is sometimes stored in underground layers. These underground layers can be used as
water sources. Humans extract this water by digging, driving, boring, or drilling wells into the ground and then pumping the water
out.
What are these underground water storage areas called?
O A. aquifers
OB. deltas
O C. watersheds
OD. drainage basins
Answer:
the answer is A) aquifers
Answer:
Aquifers
Explanation:
which of the following are examples of extensive properties?
Answer:
Mass, volume, width, height, etc.
Explanation:
Extensive properties depend on the amount of material where intensive properties (color, luster, taste, odor, density, temperature, melting/boiling point) don't.
What is the range of valence electrons that metals have?
14-Los
ojos
brillantes
Platero copian todo el
Y vivos de
paisaje de
Sol y de lluvia es simil o personificación o metáfora o gustativa
El fragmento es un ejemplo de metáfora porque presenta la relación entre la idea de los ojos de Platero con el clima soleado y lluvioso.
Metáfora es un término de origen griego que se refiere a la acción de traslación. En el lenguaje, una metáfora es una figura retórica que consiste en la asignación de un concepto o expresión a una idea sin que esta se relaciones directamente con esta definición.
De acuerdo a lo anterior, en el fragmento se presenta una metáfora en la que se relacionan los ojos de Platero con las horas de sol y lluvia.
Nota: Esta pregunta está incompleta porque el fragmento está incompleta. Aquí está el fragmento completo.
Los ojos brillantes y vivos de Platero copian toda la hora de sol y lluvia en cuyo ocaso, sobre el campo de San Juan, se ve llover, deshilachada, otra nube rosa.Aprenda más en: https://brainly.com/question/22976823
What is the most abundant type of protein in egg white? What do you think its purpose is?
Answer: Ovalbumin (Albumin)
Explanation:
The albumen (egg white) is composed of almost 60% of the protein ovalbumin. It's the main source of proteins for tissue synthesis in the embryo. It acts as a storage protein, storing ions and amino acids necessary for embryonic development.
There are four different proteins present in egg white. In which the most abundant protein is ovalbumin present in 54 %.
What are proteins?Proteins are biomolecules very essential for life. Proteins are made of a number of amino acids. Amino acids join together to form peptides and large number of peptides constitute a protein.
Essential amino acids have to be up taken from diet and non-essential will be produced inside the body.
Proteins are the major substances to build up our body. There are essential and non essential amino acids. Nails and hair are made of keratin protein. Milk contains the protein called lactine.
Similarly the protein in curd is casein. The proteins in egg white are ovalbumin, ovotransferrin, ovomucin and ovomucoid. In which ovalbumin is most abundant.
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Where do most metabolic reactions occur?
all of the above
O plasma membranes
O nucleus
O cytoplasm
Answer:
CYTOPLASM
Explanation:
MOST REACTION REQUIRE WATER TO OCCUR
SINCE ENZYME WORK BEST WHEN DISSOLVED IN WATER
WATER IS PRESENT IN CYTPLASM HENCE IT IS MAIN SITE OF MEABLIC REACTIONS