Answer:
Alessandro Giuseppe Antonio Anastasio Volta (Italian: [alesˈsandro ˈvɔlta]; 18 February 1745 – 5 March 1827) was an Italian physicist, chemist, and pioneer of electricity and power[2][3][4] who is credited as the inventor of the electric battery and the discoverer of methane. He invented the Voltaic pile in 1799, and reported the results of his experiments in 1800 in a two-part letter to the President of the Royal Society
If the valence shell of an atom has 32 electrons,how many sets of degenerate orbitals are in the valence shell
Answer:
4
Explanation:
Given that:
a valence shell of an atom = 32 electrons. This seems to be an atomic element known as germanium. At the outer shell, the number of electrons for germanium is 4. Degenerate orbitals are usually known to be orbitals that possess the same energy. According to the Aufbau principle, the electron filling of germanium (32 electrons) = [Ar] 4s² 3d¹⁰ 4p². So, the number of a degenerate atom of 32 electrons = 4
What is the charge of an atom with 6 protons and 8 electrons?
A. +2
B. -2
C. +6
D. -6
Answer:
B
Explanation:
Because the electrons are greater than the protons which makes the atom negative charged.
And when you minus 6-8=-2
Hope this helped!
The charge of an atom with 6 protons and 8 electrons is -2. Because the number of electrons dominates by 2 units.
What is charge of an atom?Atoms in their neutral state have equal number of electrons and protons. Electrons are negatively charged particles and protons are positively charged particles.
Hence, all the positive charges are neutralized with equal number of negative charges. When atoms loss or gain electrons they gets charged and this charged atom is called ions.
When electrons dominates in number or atoms gain electrons they acquire negative charge and form anions. Similarly if atoms loss electrons they form positive ions.
Here, the number of electron is 2 greater than protons. Hence the charge of the atom is -2.
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Which of the following words could have a negative connotation?
Answer:
Where are the following words.
2. If a football field is 100.0 yards long and 52.7 yards wide, how long is it in inches?
100 yards = 300 feet = 3,600 inches LONG. (Does not include the touchdown zone)
52.7 yards = 158.1 feet = 1,897.2 inches WIDE.
If you're looking for AREA in inches, then it's 6,829,920 SQUARE inches.
What is the relationship between the molecular mass and the molar mass of a substance?
Answer:
That is, the molar mass of a substance is the mass (in grams per mole) of 6.022 × 10 23 atoms, molecules, or formula units of that substance. In each case, the number of grams in 1 mol is the same as the number of atomic mass units that describe the atomic mass, the molecular mass, or the formula mass, respectively.
Answer:
The molar mass of a substance is the mass (in grams per mole) of 6.022 x [tex]10^{23}[/tex] atoms, molecules, or formula units of that substance.
Explanation:
In each case, the number of grams in 1 mol is the same as the number of atomic mass units that describe the atomic mass, the molecular mass, or the formula mass, respectively.
An anion reaction with a metal and forms a -3 charge. How many atoms of the metal would be required if the element is in group 1 on the periodic table?
Answer:
3 atoms
Explanation:
The number of atoms of the metal that would be required as it forms an anionic charge of -3 is 3 atoms.
Elements in group 1 generally have a charge of +1. They have a valency of 1
By the virtue of this;
It will take 3 atoms of a group one element to combine with an anion with a -3 charge on it.
This way, the ionic bond forms and the compound becomes neutral.
What is the empirical formula of a hypothetical compound that is 96%S and 4% H?
Explanation:
Let the mass of the compound be 100g.
Mass of Sulfur = 96g.
=> Moles of Sulfur
= 96g / (32.07g/mol) ≈ 3
Mass of Hydrogen = 4g.
=> Moles of Hydrogen
= 4g / (1.008g/mol) ≈ 4
Mole ratio of Sulfur to Hydrogen = 3 : 4,
Empirical formula of compound = S3H4.
Empirical formula is the simplest whole number ration of elements in a compound. Molecular formula is n times where n is integers 1,2,... Therefore, S[tex]_3[/tex]H[tex]_4[/tex] is the empirical formula of a hypothetical compound that is 96%S and 4% H.
What is empirical formula?Empirical formula gives the proportion of the element that is present in a compound. It does not give information about the actual number or the arrangements of the atoms.
mass of the compound be 100g.
Mass of Sulfur = 96g.
number of Moles of Sulfur= 96g / (32.07g/mol) ≈ 3
Mass of Hydrogen = 4g.
number of Moles of Hydrogen= 4g / (1.008g/mol) ≈ 4
Mole ratio of Sulfur to Hydrogen is 3 : 4
Empirical formula of compound is S[tex]_3[/tex]H[tex]_4[/tex].
Therefore, S[tex]_3[/tex]H[tex]_4[/tex] is the empirical formula of a hypothetical compound that is 96%S and 4% H.
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dino nuggies dino nuggies dino nuggies
Answer:
i love dino nuggies!!!
Explanation:
there fun
Answer:
shut ur goofy as up
Explanation:
______ The total number of protons and neutrons in the nucleus.
A. Atomic Number
B. Mass number
C. Atomic mass
And why? I give Brainliest!
Answer:
A. Atomic Number
Explanation:
The mass number is used to calculate the number of neutrons & electrons in one atom of an element. In order to calculate the number of neutrons you must subtract the atomic number from the atomic mass.
Density is determined by dividing the __________ of a sample by the __________ of the sample. PLSSSS HELP MEEE!!!
volume; mass
mass; volume
mass; weight
The density of a sample is the ratio of its mass to volume. Thus it is determined by dividing its mass by the volume of the sample. Hence, option b is correct.
What is density?Density of a sample is the measure of its mass per unit volume. It describes how much denser the substance is in a particular volume of the substance. Mathematically it is the ratio of its mass to the volume.
The ratio of density of a substance to the density of water is called its specific gravity. If specific gravity is greater than one then it will sink on water whereas, if it is less than one the substance will float on water.
The density of a substance depends on the mass, volume, bond type, temperature and pressure. Thus, density of a substance vary with difference in temperature or pressure. Density can be expressed in units such as g/ml, g/cm³.
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Help me with the periodic table and balancing chemical equations, image attacked.
3AgBr + GaPO4 = Ag3PO4 + GaBr3
1. How many grams of Ag3PO4 are produced from the use of 10.0 moles of GaPO4?
2. How many grams of AgBr are needed to produce 12 moles of GaBr3?
3. How many grams of GaBr3 are produced from the reaction of 15 moles of GaPO4?
Answer:
1.mass of Ag3PO4=4185.8g
2.mass of AgBr=6732g
What do scientists do?
A. They make sure all facts fit scientific theories.
B. They make ethical decisions for the government.
C. They learn about the world through observation.
D. They use their knowledge to make public policy.
Scientists learn learn about the world through observation which helps in making scientific theories.
What are observations?
Observations are defined as a set of statements or facts which are recorded while conducting an experiment.Observations are made through sensing changes in the variables of the experiment.
It is specifically defined as an act of knowing or recording the changes in the variables of the experiment.Recording observations holds importance as recording observations avoid the experiment to be repeated over and over again.
It is important to note down observations so that the testing of hypothesis is made easier.There are four types of observations .Observations need to be descriptive and must be written in complete sentences and should include all the numerical data of the experiment.
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If the reaction of 91.3 grams of C3H6 produces a 81.3% yield, how many grams of CO2 would be produced?
Answer:
81.3 a
Explanation:
Just search up answers on wolframalpha.com
Calculate the molarity of a solution prepared by dissolving 13.0 g of Na2CrO4 in enough water to produce a solution with a volume of 800. mL .
Express the molarity to three significant digits.
Answer:
molar mass sodium chromate = 162g
12.6g ÷ 162g/mole = moles sodium chromate (This is the solute)
molalrity or M = moles solute ÷ lliters of solution (You'll have to change given mL to L)
A wooden box with a mass of 50 kg in placed on a flat wooden table. What
the horizontal force required to overcome static friction and just cause th
box to slide? us = 0.70 for wood-on-wood. F = uxN
Answer:
is this have picture so I can solve
If 35.0 grams of coal (carbon) burns in 58.5 grams of oxygen gas, how many grams of carbon dioxide can be produced? Describe the steps.
C + O2 → CO2
Answer:
0.59
Explanation:
Is 0.59 because you are dividing 35.0g by 58.5 which will than give you 0.59
Please help I will give brainliest!
Ninety-five percent of igneous rocks
and metamorphic rocks are below
Earth's surface. Why is this true?
Answer:
This is so cause ...
Igneous rocks are formed when the molten material cools and hardens
and
Metamorphic rocks form when they are subjected to high temperatures and the great pressure of the rock layers above it.
So most of these rocks are found beneath the earth''s crust
(I hope im right... this might not be the perfect answer... but this as close as I can get.. I hope it usefull for u )
The given statement is true because igneous and metamorphic rocks are formed through processes that typically occur deep within the Earth's crust or mantle.
What are igneous rocks ?Igneous rocks are formed from molten magma that cools and solidifies beneath the Earth's surface, while metamorphic rocks are formed from existing rocks that are subjected to intense heat and pressure deep within the Earth.
After their formation, these rocks may remain buried beneath the Earth's surface due to ongoing geological processes such as plate tectonics, where rocks are pushed deeper into the Earth's mantle over time.
Additionally, erosion and weathering can expose rocks at the Earth's surface, but the majority of the exposed rocks tend to be sedimentary rocks rather than igneous or metamorphic rocks.
As a result, the vast majority of igneous and metamorphic rocks remain buried deep within the Earth's crust and mantle, making up the majority of the Earth's crust beneath the surface.
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how do we separate cork and lead
Answer:
water exposure because it extracts millennials which is a product
PLEASEEEEE HELPPPPPPPP MEEEEEEEEEEEEEEEE
what is one of the causes of mechanical weathering
Answer:
Mechanical weathering is usually caused by extreme hot and cold temperatures. Water seeps into cracks in rocks, freezes, and expands, causing further breakdown of rocks. Wind is another example of mechanical weathering.
Explanation:
Answer:
carbon dioxide i think
Explanation:
What are the relative strengths of intermolecular forces based upon the findings in this activity
Answer:
Dispersion forces are the weakest intermolecular force (one hundredth-one thousandth the strength of a covalent bond), hydrogen bonds are the strongest intermolecular force (about one-tenth the strength of a covalent bond). Dispersion forces < dipole-dipole interactions < hydrogen bonds.
Answer:There are two kinds of forces, or attractions, that operate in a molecule—intramolecularand intermolecular. Let's try to understand this difference through the following example.
Figure of towels sewn and Velcroed representing bonds between hydrogen and chlorine atoms
We have six towels—three are purple in color, labeled hydrogen and three are pink in color, labeled chlorine. We are given a sewing needle and black thread to sew one hydrogen towel to one chlorine towel. After sewing, we now have three pairs of towels: hydrogen sewed to chlorine. The next step is to attach these three pairs of towels to each other. For this we use Velcro as shown above.
So, the result of this exercise is that we have six towels attached to each other through thread and Velcro. Now if I ask you to pull this assembly from both ends, what do you think will happen? The Velcro junctions will fall apart while the sewed junctions will stay as is. The attachment created by Velcro is much weaker than the attachment created by the thread that we used to sew the pairs of towels together. A slight force applied to either end of the towels can easily bring apart the Velcro junctions without tearing apart the sewed junctions.
Exactly the same situation exists in molecules. Just imagine the towels to be real atoms, such as hydrogen and chlorine. These two atoms are bound to each other through a polar covalent bond—analogous to the thread. Each hydrogen chloride molecule in turn is bonded to the neighboring hydrogen chloride molecule through a dipole-dipole attraction—analogous to Velcro. We’ll talk about dipole-dipole interactions in detail a bit later.
hope this helps have a nice night❤️❤❤️
Explanation:
What is viscosity?
A fancy word for energy
A liquid's flow
A type of plant
Answer pls:)
What is the mass of 8.944 x 1018 iron atoms in cg?
Which option below will have a charge of negative 3?
A. Two electrons and five protons
B. Two electrons and three protons
C. Five electrons and two protons
D. Three electrons and two protons
Answer:
C
Explanation:
When the electron is greater than proton the atom will be negatively charged.
So, 2-5= -3
Hope this helped you!
What mass of krypton gas has a volume of 2.33 L at 53°C and 311 kPa?
i have no clue what so ever sorry
Answer:
22.35
>:) now go show your science teacher you have the smart
Please Help!!
The covalent bonds within a molecule are (very strong/weak). However it requires (more/less) energy to melt a molecular compound than an ionic compound?
This is because the attractive forces between individual molecules are (weaker/stronger) than the forces between ions in an ionic compound.
choose the correct answer in the parentheses.
Answer: The covalent bonds within a molecule are very (strong). However it requires (less) energy to melt a molecular compound than an ionic compound.
This is because the attractive forces between individual molecules are (weaker) than the forces between ions in an ionic compound.
The term chemical bond generally refer to the attractive force which holds the respective ions or atoms of a molecular substance. Bonding in the compounds helps to attain the stability.
What is a covalent bond?A bond which is formed by the sharing of an electron pair among the atoms is known as the covalent bond. The concept of covalent bond was introduced by G.N Lewis in 1916.
An ionic bond is generally formed by the transfer of one or more electrons from one atom to another. In an ionic bond the positive and negative ions are held together by the electrostatic forces of attraction.
The ionic compounds have high melting and boiling points and in order to break the ionic bonds there is a need to supply large amount of energy than the covalent bonds. Thus ionic compounds are found to be stronger than the covalent compounds.
The covalent bonds within a molecule are (very strong) and it requires (less) energy to melt a molecular compound. The attractive forces between individual molecules are (weaker) than the forces between ions in an ionic compound.
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What will lithium and bromine make when they bond
Answer:
they will form a compound
Answer:
When lithium and bromine bond it makes lithium bromide.
What organelle makes proteins needed to repair damage or direct chemical
processes?
Answer:
ribosome
Explanation:
he ribosome is a cell or vertebrate structure that makes proteins. Proteins are required to direct the functions or functions of many cells, such as repair or chemical processes. The ribosome can be found floating within the cytoplasm or attached to the endoplasmic reticulum.