Answer:
4
Explanation:
+ 4 is the integer that represents the total charge of 4 protons because proton has a positive charge is known as cation so plus sign should be added to number of protons while on the other hand, for 4 electrons we -4 integer because electron has negative charge is known as anion so that's why plus sign is added with proton and negative sign is added to electron.
This is the chemical equation for the production of ammonia (chemical formula: NH3) from Nitrogen and Hydrogen (N2 and H2):
N2 + H2 --> NH3
A student balanced the above chemical reaction as follows:
N2 + H2 --> N2H2
Explain why this is the incorrect way to balance an equation.
Answer:
Honestly, I'm not even sure what the incorrect student was trying to do. The correct answer is:
( ) = the number of elements
(1)N2 and (3)H2
I think the student added the N2 and H2 to "balance" the chemical equation when instead they should have tried the balance the equation by making sure the atoms on the reactant side are equal to the atoms on the product side. You do this by multiplying the atoms on the reactant side until they equal the product side (not by adding them, as the student did).
This is an incorrect way to balance a chemical equation as coefficients are added in front of chemical formula rather than as subscripts.
What is chemical equation?Chemical equation is a symbolic representation of a chemical reaction which is written in the form of symbols and chemical formulas.The reactants are present on the left hand side while the products are present on the right hand side.
A plus sign is present between reactants and products if they are more than one in any case and an arrow is present pointing towards the product side which indicates the direction of the reaction .There are coefficients present next to the chemical symbols and formulas .
The first chemical equation was put forth by Jean Beguin in 1615.By making use of chemical equations the direction of reaction ,state of reactants and products can be stated. In the chemical equations even the temperature to be maintained and catalyst can be mentioned.
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What is a substance
Answer: A substance is a particular kind of matter with uniform properties
Explanation:
Which numerical setup can be used to calculate the heat energy required to completely melt 83.5 grams of H2O(s) at 0°C?
Answer:
(83.5g)(334J/g)
Explanation:
found it
Answer:
(100. g)(4.18 J/g•K)(273 K)
Explanation:
bc
Briefly describe metals
Answer:In chemistry, a metal is an element that readily forms positive ions (cations) and has metallic bonds. Metals are sometimes described as a lattice of positive ions surrounded by a cloud of delocalized electrons. ... The traditional definition focuses on the bulk properties of metals.
Explanation:
Answer:
metal is a type of element to be percise M.O in the element periodic table
Explanation:
ur welcome
This group of elements is located in the center of the periodic table
O alkaline-earth metals
O alkali metals
O halogens
transition metals
Answer:
Transition metals are located in the center.
Despite what is portrayed in science fiction movies, if you witnessed a battle in outer space, you would not hear sound. Explain why.
Answer:
The vacuum of outer space has essentially zero air. Because sound is just vibrating air, space has no air to vibrate and therefore no sound.
Explanation:
The vacuum of outer space has essentially zero air. Because sound is just vibrating air, space has no air to vibrate and therefore no sound.
Answer:
There is no air in space for sound waves to travel
Which is the best description of a molecule?
A molecule of an element is composed of at least two types of atoms.
B molecule of a compound is composed of only one type of atom.
C molecule of a compound is composed of at least two types of atoms.
D molecule of an element is composed of exactly two types of atoms.
formic acid is a stronger acid than Acetic Acid, why ?
Answer:
In acetic acid, due to the +I effect of the alkyl group the electron density on the oxygen atom increases.
The release of H + ion becomes difficult. Thus , greater the magnitude of +I effect weaker will be the acid.
Order of +I effect : CH 3>H
Therefore , formic acid (HCOOH) is more acidic than acetic acid (CH 3COOH).
Which of the following reactions involves two or more substances combining to form a new compound?
F single replacement reaction
G combination (synthesis) reaction
H decomposition reaction
J combustion reaction
Answer:
combination (synthesis) reaction
Which shows the atoms in order of decreasing atomic radii? A) F, Cl, Br B.) Cl, F, O C) S, Cl, F D) N, C, B
Answer:C) S, Cl, F shows the decreasing order of atomic radii across a period and down a group
Explanation:
The Trend of atomic radius in a period occurs like this :
decreases from left to right as you go across a period. This is because of the shrinking of the nucleus as electrons are being added to the same orbital or shell conferring on the nucleus a positive charge as protons are also being added to the nucleus causing an attraction of the positively charged nucleus to electrons.
Increase down the group-This is because of the increasing energy levels caused by an increase in the number of shell causing a gap between outermost shell and the nucleus.
--Therefore On the same group, as you move across the period 3, Sulphur has a larger atomic radius than chlorine and on group 17 chlorine has a larger atomic radius than Fluorine.
Which of the following objects is the most malleable?
Gold
Gold is the most malleable and ductile of all known metals. A single ounce of gold can be beaten into a sheet measuring roughly 5 meters on a side.
The electron dot diagram for a neutral atom of chlorine (atomic number 17) is shown below.
Which of the following symbols represents a chlorine ion with a stable arrangement of eight valence electrons?
electron dot diagram of chlorine
A. 35Cl1-
B. 35Cl2-
C. 35Cl1+
D. 35Cl
Help help please What conclusion can you draw about the relationship between physical activity and a
person's pulse rate?
Answer:Depending how fast the max pulse rate is is how active you are
Explanation:
Mole Conversion:Find the number of moles in 384g of cobalt.
Answer:
6.51585239863
Explanation:
divide the grams by the molar mass
384/58.933195
3. The electron configuration of 2-6-1 represents an atom of *
oxygen and is in the ground state
fluorine and is in the ground state
oxygen and is in the excited state
O fluorine and is in the excited state
this is the number of protons and neutrons i the nucleus of any atom
Answer:
The mass number is defined as the total number of protons and neutrons in an atom. Consider Table below which shows data from the first six elements of the periodic table. Consider the element helium. Its atomic number is 2, so it has two protons in its nucleus.
Explanation:
apakah fungsi sel palisade
Answer:
Sel palisade terdapat di daun dan fungsi utamanya adalah penyerapan cahaya sehingga fotosintesis dapat berlangsung.
Explanation:
Archimedes himself had a mass of 52 kg when he discovered displacement. If his density was roughly 12 g/mL, calculate the amount of water he would spill out of a full tub.
Answer:
7.75 kg
Explanation:
Archimedes’ principle tells you that the weight of the water displaced is equal to the buoyancy force:
To keep the wood afloat, the buoyancy force must have the same magnitude as the force of gravity on the block, so
The volume of water displaced is
So the mass of water displaced is
Thus, the mass of the piece of wood is 7.75 kilograms.
What is the mass of 7.00 moles of H2O2
Answer:
The SI base unit for amount of substance is the mole. 1 mole is equal to 1 moles H2O2, or 34.01468 grams.
Explanation:
The SI base unit for amount of substance is the mole. 1 mole is equal to 1 moles H2O2, or 34.01468 grams.
Answer:7.00 moles of H2O2
Explanation:
Which ion has the electron configuration of a noble gas
Answer:
chloride
Explanation:
what is the anwser to this question
Answer:
Is there a picture if so I can't see it
Answer:
Third option.
Explanation:
when the balloon is rising to high altitudes, the air pressure decreases. so the helium in the balloon increases and expands the balloon.
hope this helps :)
Would the chemical bond that forms between oxygen & titanium be ionic or covalent?
You must use/underline the following words/phrases in your paragraph:
- ionic bond - covalent bond
- electrons - transfer
- share - electronegativity
- strong - electronegativity difference
Answer:
- ionic bond - covalent bond
- electrons - transfer
- share - electronegativity
- strong - electronegativity difference
Explanation:
The chemical bond that forms between oxygen & titanium be covalent bond.
What is Covalent Bond ?A covalent bond is a chemical bond that involves the sharing of electrons to form electron pairs between atoms.
These electron pairs are known as shared pairs or bonding pairs, and the stable balance of attractive and repulsive forces between atoms, when they share electrons, is known as covalent bonding.
Titanium dioxide is a covalent compound in which the titanium atom is bonded to each oxygen through double bonds.
It consists of covalent bonds, with titanium is in a +4 oxidation state. Therefore, titanium dioxide is a covalent compound.
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A 0.860-kg sample of tin (with a specific heat of 210.0 J/(kg x K)) is heated to 525 K and then placed in 1.20 kg of water that is at 303 K. If the system is left to reach its equilibrium state, what will the equilibrium temperature be? Assume that no thermal energy is lost to the external environment. Use 4.186 J/(g x K) as the specific heat of water.
PLEASE ANSWER QUICK WILL GIVE BRAINLIEST
Answer: 310K
Explanation: I got it right
Answer:
310 k
Explanation:
Hope this helps
a material is said to be ductile if it _
Answer:
can be drawn into wires.
Explanation:
A material is said to be ductile if it can be drawn into wires. Metals, for example, are very ductile as compared to non-metals. These wires are generally used for conducting electricity.
your welcome hope its right! can i have brainliest?
what are atoms?
1.electronic devices
2.batteries
3.light bulbs
4.particles of matter
Answer:
4. particles of matter
Answer:
The basic unit of a chemical element. The answer is 4 particles of matter.
PLEASE HELP!!!! What is the abbreviated electron configuration for nitrogen and for chlorine
Answer:chlorine’s is (Ne) 3s2 3p5
Explanation:lol
Answer: chlorine [Ne] 3s² 3p⁵ nitrogen 3s²2p³
what is neutralization reaction?
Explanation:
neutralization is a chemical reaction in which acid and a base react equal with each other.
Answer:
Explanation:
A neutralization reaction is when an acid and a base react to form water and a salt
Hope it helps
Imagine you push a book across an incredibly slippery surface. It slides right across because there is NO friction. Next, you push the same book across a rougher surface that exerts friction.
Will the velocity of the book change as it moves across the surface with NO friction?
Answer:
Yes
Explanation:
cuz i learned that in 7th grade
Which of the following statements is FALSE regarding elements
A-all of the answers are true regarding elements
B-they make up matter
C-each element has a unique set of physical and chemical properties
D-elements can be grouped together based on properties they have in common
E-they can be broken down into simpler substances
Answer:
E-they can be broken down into simpler substances
Explanation:
Elements cannot be broken down into simpler substances.
In fact, the very definition of a chemical element is based on that property. If a chemical substance can be broken down into simpler substances, it is not an element, but a compound.
Why would two populations
of organisms compete for
resources in an
ecosystem?
Answer:
For shelter, will to live, offspring, etc.
The resources may be in low supply and they will have to fight or die
Explanation:
