Answer:
With ions of calcium in a cyclotron. This produced four atoms of moscovium. Moscovium is a synthetic element with the symbol Mc and atomic number 115. It was first synthesized in 2003 by a joint team of Russian and American scientists at the Joint Institute for Nuclear Research (JINR) in Dubna, Russia. In December 2015, it was recognized as one of four new elements by the Joint Working Party of international scientific bodies IUPAC and IUPAP. On 28 November 2016, it was officially named after the Moscow Oblast, in which the JINR is situated.[7][8][9]
Moscovium is an extremely radioactive element: its most stable known isotope, moscovium-290, has a half-life of only 0.65 seconds.[10] In the periodic table, it is a p-block transactinide element. It is a member of the 7th period and is placed in group 15 as the heaviest pnictogen, although it has not been confirmed to behave as a heavier homologue of the pnictogen bismuth. Moscovium is calculated to have some properties similar to its lighter homologues, nitrogen, phosphorus, arsenic, antimony, and bismuth, and to be a post-transition metal, although it should also show several major differences from them. In particular, moscovium should also have significant similarities to thallium, as both have one rather loosely bound electron outside a quasi-closed shell. Over a hundred atoms of moscovium have been observed to date, all of which have been shown to have mass numbers from 286 to 290.
Explanation:
Hope this helps u please make brainlyest
Using calcium ions in a cyclotron. As a result, four moscovium atoms were created. Moscovium is a man-made element with the atomic number 115 and the symbol Mc
Where was the element 115 created for first time ?Heavy ion collisions in particle accelerators have intentionally produced element 115, also known as Moscovium. So far, about 100 atoms have been seen.
At the Joint Institute for Nuclear Research (JINR) in Dubna, Russia, a team of Russian and American scientists initially created it in 2003.
It was acknowledged as one of four new elements by the Joint Working Party of the worldwide scientific organisations IUPAC and IUPAP in December 2015. It was formally named after the Moscow Oblast on November 28, 2016.
Thus, Element 115 i.e. moscovium was created using calcium ion of cyclotron.
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How many valence electrons does aluminum have.
Answer:
3 valence electrons
Explanation:
Aluminum has three valence electrons. Valence electrons are found in the outermost shell of an element and are responsible for its valence.
what is ammonium chloride
Answer:
Ammonium chloride (a chemical compound) is an inorganic compound with the formula NH₄Cl and a white crystalline salt that is highly soluble in water. Solutions of ammonium chloride are mildly acidic. In its naturally occurring mineralogic form, it is known as sal ammoniac.
After a few minutes of boiling, Francisco removes the pressure cooker from the heat and lets it sit for 15 minutes. How will this affect the particles in the water vapor inside the cooker?
Choose the correct answer.
They will collide with each other more often.
They will collide with the walls of the pressure cooker more often.
They will collide with the walls of the pressure cooker less often.
They will begin to collide with air particles rather than the liquid water particles.
Answer:
Pressure Cooking
Explanation:
Pressure cooking is a very old cooking method that’s experienced a recent resurgence thanks to a new generation of cookers that promise a speedy, set-it-and-forget-it path to dinner. These devices, whether electrical or stovetop, are all much safer than those of decades ago (which tended to explode), with mechanisms to prevent them from accumulating too much pressure. If you read the owner’s manual carefully, however, you’ll still find one important precaution to take when cooking under pressure: adding water. Water and pressure cooking go hand in hand. In fact, it’s water that helps generate the high-pressure environment that makes your food cook faster.
Most pressure cooker instructions state a minimum amount of water required for pressure cooking even a tiny amount of food. Inside the tightly sealed pressure cooker, the water is heated and eventually boils into steam. Since the steam cannot escape, it collects above the food. All those trapped water molecules increase the pressure inside the cooker.
Guys I need help please! Do not scam me ok? Thanks:). Please take a screenshot and send thanks.
Answer:
thx for the points
Explanation:
no need brainliest
Write and balance chemical reactions for the following reactions and name the reaction type:
a. Solid sodium oxide reacts with water to form sodium hydroxide
b. Solid aluminum metal reacts with aqueous zinc chloride.
c. C3H8 (g) + O2 (g) --->
2. Describe the three main types of radioactive decay and their properties.
Answer: The reaction of 1 mol of C to form carbon monoxide in the reaction 2 C(s) + O2(g) ( 2 CO(g) releases 113 kJ of heat. How much heat will be released by the combustion of 100 g of C according the the above information? According to the balanced chemical equation;
Explanation:
which compound should have the largest lattice energy?
Answer:
From the given compounds MgO has the highest lattice energy.
Which parts must be balanced in a chemical equation?
The reactants and products parts of a chemical equation must be balanced.
What is a balanced equation?A chemical reaction is said to be balanced when the number of atoms of each element on both sides of the equation are the same.
A chemical equation consists of the reactants and the products, hence, the number of atoms on both sides must be equal for the equation to be balanced.
Therefore, the reactants and products parts of a chemical equation must be balanced.
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if your going down a hill what type of energy are you making?
Answer:
Gravitational potential energy - into Kinetic energy
Explanation:
Help please I promise this time I will mark whoever answers correctly first please
10 grams
mass does not change when cooking the egg
what are some advantages and disadvantages in acid rain management, in crop fields
Answer:
Disadvantages of acid rain:
• Acid rain affects the fresh water ponds and lakes and destroys the aquatic life as some species of fishes are rare and may be extinct
• it can affect the trees particularly those that are high altitude
• It can damage historical monuments and buildings
•soil can be affected and can lead to deaths of good microbes
Advantages of acid rain:
• it makes holes in limestone below ground, which creates caves and places to store groundwater, as well as providing habitat for some species
• But the new study shows that sulfuric in acid may have benefits, limiting global warming by counteracting the natural production of methane gases by microbes in wetland areas.
Explanation:
Why do elements in the same group have similar physical and chemical properties
Answer:
Each element within a group has similar physical or chemical properties because of its atom's outermost electron shell (most chemical properties are dominated by the orbital location of the outermost electron).
Explanation:
Help with Complex Ions!
Determine the [Ag+] present in solution at equilibrium when the complexing agent ammonia is added to a 0.025 M solution of AgNO3 to result in a [NH3]eq = 0.15 M.
Solubility constant (Ksp) for Ag(NH3)2 2+ is 1.7 * 10^7.
The concentration of [Ag+] present in the solution is 6.53 × 10⁻⁸ M
From the given information, the equation for the reaction between silver ion and ammonia can be represented as:
Ag⁺ + 2NH₃ ↔ [Ag(NH₃)₂]⁺
Given that the solubility constant (Ksp) for the product formed = 1.7 × 10⁷.
The solubility constant for this reaction can be expressed as:
[tex]\mathbf{Ksp = \dfrac{[Ag(NH_3)_2]^+}{[Ag^+][NH_3]^2} }[/tex]
where;
concentration of ammonia = 0.025 Mconcentration of silver nitrate = 0.15 M[tex]\mathbf{1.7 \times 10^7 = \dfrac{0.025}{(x)(0.15)^2}}[/tex]
[tex]\mathbf{1.7 \times 10^7 = \dfrac{1.1111}{x}}[/tex]
[tex]\mathbf{x = 6.54 \times 10^{-8} \ M}[/tex]
Therefore, we can conclude that the concentration of [Ag+] = x = 6.54 × 10⁻⁸ M.
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Use the periodic table to identify the number of core electrons and the number of valence electrons in each case below.
Can you please add a picture of the case??
What part of the digestive tract that the food is broken into very small pieces?
mix the food with digestive juices that have acids and enzymes, breaking it into much smaller, digestible pieces
hope it helpsidentify ALL equations that involve Pressure(Minimum 2)
Answer:
p=F/A.Explanation:
which characteristic do valence electrons indicate about reactions between atoms?
Bond number
The characteristic of reactions that depends on valence electrons is the bond type.
In chemistry, a chemical bond could be;
Ionic
Covalent
The type of bond formed depends on the number of valence electrons present. When there are few valence electrons on an atom, it mostly forms ionic bonds.
When there are more electrons on an atoms, it mostly forms covalent bonds and the electrons between the atoms are shared.
Achemist is studying an unknown substance and could break the substance into its elemental components only by using
chemical means?
Question 2
20 pts
What types of elements make up salt and what type of compound is it?
nonmetals only and covalent
metals only and ionic
metals and nonmetals and ionic
What are atoms made of.
Answer: Atoms are made of dust because God made us with dust.
Explanation:
What is the mass of 1 mol of 0 atoms to three significant figures?
Answer:
16.0 gms
Explanation:
what is the mass of 1 mole of O atoms to 3 significant figures
go to your periodic table.......O is element 8 and has an atomic mass of 15.999. to 3 significant figures, this rounds to 16.0
1 mole is the molar mass in grams
so 1 mole of O atoms has a weight of 16.0 gms
¿Qué fase de la materia se muestra en la imagen? *
solido
Explanation:
porque estan todos los puntos juntos
How are mitosis and meiosis similar? How are they different? Provide 1 way the two processes are the same and 2 ways the 2 processes are different.
Answer:
Similar: both processes of cell division; both processes take place in the nucleus of the cell
Different: mitosis divides into 2, meiosis divides into 4; one is the division of body cells and the other is of specifically sex cells
Explanation:
https://byjus.com/biology/mitosis-and-meiosis/
^ this has more info!
Which polymer structure should be used if a strong and heat - resistant adhesive is required?
1. Linear
2. Branched
3. Networked
4 . Cross - linked
Cross-linked polymers are strong and heat - resistant hence they can be used for this purpose.
A polymer is obtained by the combination of small molecules called monomers. A polymer consists of a regular repeating unit of small molecules called monomers.
A cross-linked polymer is a polymer in which covalent bonds are used to join polymer chains together. Cross-linked polymers are strong and heat - resistant hence they can be used for this purpose.
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1. Which of the following statements pertaining to the ionic solids represented below are true?
(0)
1.
Both structure are ductile.
II. Structure (1) has a higher melting point than structure (ii)
III. Both structures conduct electricity in the solid state.
IV. Both structures conduct electricity in the liquid state.
Answer:
B
Explanation:
so A is nosense C and D the question is saying the stament for a being repersentation of solid not whether eletric or not
Vanadium crystallizes in a body-centered cubic lattice, and the length of the edge of a unit cell is 305 pm. What is the density of V
Answer:
5.96 g/cm^3
Explanation:
Corner atom = 1/8
Atoms in center = 1
Atoms in face of the cube= 1/2
Molar mass of V = 50.94 g/mol (from period table)
1 mole = 6.02x10^23
In BCC unit cell:
(8 x 1/8)+ 1=2 per 1 unit cell
Mass: 2(50.94g)/6.02x10^23 = 1.69x10^-22 g/unit cell
305pm=(305x10^-12m÷10^-2m) x (1mL÷1cm^3)
= 2.837 x 10^-23 mL
1pm=10^-12m
1cm=10^-2m
1mL=1cm^3
density=mass/volume
density of V = 1.69x10^-22g÷2.837x10^-23mL
=5.957g/mL
=5.96g/cm^3
witch one is a gas metal or ion-----sodium, potassium, hydrogen, lithium
Answer: Lithium, sodium and potassium are in the same group, alkali metals or Group 1A, because the Periodic Table is arranged according to the Periodic Law which states that chemical properties repeat at regular intervals.
Explanation: hope it helps :)
An atom of sodium has 11 electrons. Make a sketch of a sodium atom, showing how many electrons it has at each energy level. Infer how reactive sodium atoms are.
SOMEONE PLEASE HELP ME OUT. :( I DONT GET IT !!!
Answer:
Sodium has 11 electrons. The first two fill the innermost energy level. The second energy level is also full, holding eight electrons and one electron remaining in the outer energy level. It is the number of outer electrons that give an element its chemical properties.
Explanation:
Sodium has 11 electrons. Therefore electronic configuration of sodium is (2,8,1).
What are electrons?
Electrons are the negatively charged particles of an atom. An atom contains a positive proton, a negative electron, and a neutral neutron. Electrons are negatively charged particles that rotate around the atom.
There are around 118 elements in the earth. Sodium is a important element. The atomic number of sodium is 11. The first shell contains 2 electrons, 2nd shell contains 8 electrons and 3rd shell will have 1 electron in sodium.
Sodium is a metal. It will loose that one electron and become cation. It become Na+.
Therefore, Sodium has 11 electrons. Therefore electronic configuration of sodium is (2,8,1).
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HELP IM BEING TIMED: btw its science im just putting some thing random
Observe this image of two objects. What will happen when they are brought close together?
Answer:
I thinks something bad will happen but science can change so im not sure
Explanation:
Science changes because of diffrent thing like enviorment
Which of the following states of matter is made of free electrons and ions of the elements? A. liquid B. gas C. solid D. plasma
Answer:
D. Plasma
Explanation:
Please help me.
a 750 sample of technetium-99 decays in 4 half lifes, how much of the sample will remain?
Answer:
93.75
Explanation:
In first half life 750×1/2 will remain
In second one half from that remained at the end of first half life will remain
That is 1/2 × 750×1/2
likewise at the end of 3rd half life 1/2 × 1/2 ×750×1/2 remains
at the end of 4th half life 1/2 × 1/2 × 1/2 ×750×1/2 remains
1/2 × 1/2 × 1/2 ×750×1/2 = 93.75 remains.
You can also use the equation
Remainder = X × 1/2^n .
This saves time
n= no. of half lives
X= initial amount
so in this case 1/2^4 × 750 = 93.75
