One atom is electrically neutral and another one has a stable electronic configuration.
What is an atom?An atom is a particle of matter that uniquely defines a chemical element. An atom consists of a central nucleus that is usually surrounded by one or more electrons.
It is likely the neutral atom has 6 protons and 6 electrons; while the negatively charged atom has 7 or more electrons.
The mass of an atom, commonly known as the atomic mass is determined by the number of protons and neutrons as electrons have a very low mass.
This means two atoms can have the same number of protons and neutrons, but a different number of electrons, which would make the atom be charged negatively or positively.
Based on this, if there are two atoms, each with 6 protons but one of these is negatively charged it is because the second atom has 1 or more extra.
Hence, one atom is electrically neutral and another one has a stable electronic configuration.
Learn more about atoms here:
https://brainly.com/question/1566330
#SPJ1
How many moles are equal to a 0.25g sample of al?
Answer:
0.00926
Explanation:
no. of moles = mass ÷ molar mass (RMM)
Molar mass of Al is 27.
∴ no. of moles = 0.25 ÷ 27
= 0.00926 moles (3 s.f.)
Answer:00926
Explanation:
Calculate the percentage by mass of nitrogen in magnesium nitrate. You will need the information below. Give your answer to the nearest whole percentage (e.g. 34%).
From the calculations, the percentage by mass of the nitrogen is 18.9 %..
What is the percentage by mass?The term percentage by mass refers to the mass of an atom that is contained in a compound.
Hence, the compound magnesium nitrate has the formula Mg(NO3)2. The molar mass of the compound is 24 + 2(14 + 3(16)) = 148 g/mol.
The percentage by mass of nitrogen is; 28/ 148 * 100/1 = 18.9 %.
Learn more about percentage by mass:https://brainly.com/question/16885872
#SPJ1
Observe Record observations of the reaction and
products in the data table.
The insoluble yellow solid is Pbl2, which is
DONE
PbI₂ (lead iodide) will be formed when Potassium Iodide reacts with Lead (II) Nitrate.
What is a Balanced equation?
This type of equation which denotes the equal number of atoms of reactants and products in a chemical reaction.
The balanced equation between Potassium Iodide and Lead (II) Nitrate is shown below:
2KI₍s) + Pb(NO₃)₂₍aq) → PbI₂(s) + 2KNO₃(aq)
Read more about Balanced equation here https://brainly.com/question/11904811
#SPJ1
Which reaction is both a redox reaction and a combustion reaction?
Several scientists from different countries are asked to examine the results of an experiment before a journal will print it. Which term best describes this step of the investigative process?.
Answer:
Peer Review
Explanation:
Answer:
Peer review
Explanation:
The peer-review process subjects an author's research or ideas to the scrutiny of others who are experts in the same field and is considered necessary for academic scientific quality.
____energy is the energy of movement.
Kinetic
O Temperature
Potential
Answer:
Kinetic (A).
Explanation:
If energy moves, it is known as kinetic energy. I hope this helps! :)
How are microwaves similar to radio waves?
1
A. Both are used in communications.
B. Both are high-frequency waves.
C. Both have many medical applications.
D. Both have very short wavelengths.
Answer:
it's B.
Explanation:
Similar to Radio wave a microwave is also an electromagnetic wave of lower wavelength and high frequency.
Answer:
B
Explanation:
Lana balanced an equation so that the result was 2c2h3br 5o2 → 4co2 2h2o 2hbr. which most likely represents the starting equation? 2c4h3br 5o2 → 4co2 2h2o 2hbr c2h3br 5o2 → 4co2 h2o 2hbr c4h3br o2 → co2 h2o hbr c2h3br o2 → co2 h2o hbr
Given the data from the question, the starting equation is
C₂H₃Br + O₂ --> CO₂ + H₂O + HBr
What is a chemical equation?Chemical equations are representations of chemical reactions using symbols and formula of the reactants and products.
The reactants are located on the left side while the products are located on the right side.
Reactants —> Products
The balancing of chemical equations follows the law of conservation of matter which states that matter can neither be created nor destroyed during a chemical reaction but can be transferred from one form to another.
Considering the equation given from the qustion
2C₂H₃Br + 5O₂ --> 4CO₂ + 2H₂O + 2HBr
We can see that the above equation is already balanced.
Thus, the starting equation will be the skeletal equation which is unbalanced.
Therefore, we can conclude that the starting equation is:
C₂H₃Br + O₂ --> CO₂ + H₂O + HBr
Learn more about chemical equation:
https://brainly.com/question/7181548
#SPJ1
Answer:
D
Explanation:
took the test
Name the following carboxylic
acid:
oh
o
a. butanoic acid
b. butanol
c. propanoic acid
d. propanal
The given carboxylic acid is the butanoic acid due to its similar structure of bonded atoms.
What is the name of this acid?This acid is known as butanoic acid because in this example, hydroxide is bonded with the oxygen atom which is the same case with butanoic acid in which OH is bonded with oxygen atom.
So we can conclude that the given carboxylic acid is the butanoic acid due to its similar structure of bonded atoms.
Learn more about acid here: https://brainly.com/question/25148363
#SPJ1
Is there any industrial process that use evaporation to separate a solution?
Yes, it is known as distillation.
The industrial process that utilizes that strategy of evaporation to separate a solution is known as Distillation.
What is Evaporation?Evaporation may be defined as the methodology of liquid transforming into vapors even below its boiling point.
Distillation is an influential technique to isolate mixtures that are constituted of two or more refined liquids.
Distillation is a purification procedure where the elements of a liquid combination are vaporized and then compacted and sequestered.
Therefore, it is well described above.
To learn more about Distillation, refer to the link:
https://brainly.com/question/24553469
#SPJ1
Which two substances are reactants in the following chemical equation?
CO + H₂O CO₂ + H₂
A. H₂0
■ в. со
C. CO₂
OD. H₂
How do you name a compound with a polyatomic and a non-metal? Example: [tex]H_{2} PO_{4}^{-}[/tex]
DiHydrogen Phosphate or Phosphoric acid is the compound here
How to identify and name
First identify the two ions
Here they are PO_4- and H+Now
Name them
Phosphate and hydrogenCombine and you are done
We will use the given compound{DiHydrogen Phosphate)
We know the naming rule
Cation+AnionFind anion here
Phosphate (PO_4-)2 hydrogen ions
Di hydrogenCombine them
DiHydrogen PhosphateIron (III) oxide (s) is heated in excess carbon monoxide (g) to form iron (s) and carbon dioxide (g). If the percent yield of iron was 83.0% and the actual yield was 9.87 g, how much iron (III) oxide (s) was used
Answer:
17.1 grams Fe2O3
Explanation:
We need to balance the chemical reaction.
I find:
1Fe2O3 + 3CO = 3CO2 + 2Fe
A little tricky, but count the individual atoms and you'll find that all are accounted for.
We are told that 9.87 grams of Fe was obtained, and that was an 83% yield. In other words, the actual amount, 9.87 grams, when divided by the theoretical amount, x, is 83.0% or 0.83:
9.87g/x = 0.83
x = 11.89 grams (the theoretical amount we should have obtained, if everything went perfectly.)
11.89 grams of Fe, at 55.85 g/mole, is (11.89 g)/(55.85 g/mole) = 0.213 moles Fe. The balanced equation says it takes 1 mole of Fe2O3 to make 2 moles of Fe, a ratio of (1 mole Fe2O3/2 moles Fe)
(0.213 moles Fe)*(1 mole Fe2O3/2 moles Fe) = 0.107 moles Fe2O3
(0.107 moles Fe2O3)*(159.7 grams Fe2O3/mole Fe2O3) = 17.1 grams Fe2O3.
What amount of alcohol consumed while boating is equivalent?.
Describe the difference between polar covalent bonds and nonpolar covalent bonds using these two molecules - H2 and HCl. Which molecule contains a polar covalent bond and which molecule contains a nonpolar covalent bond? Explain your reasoning alongside describing the differences between the types of bonds.
Polar covalent bonds are between atoms with different electronegativities, whereas nonpolar covalent bonds are between atoms with the same electronegativity.
This means that HCl is a polar covalent bond, whereas H2 is a nonpolar covalent bond.
A perfume bottle is dropped in the corner of a room and it shattered. The odor of the perfume can be detected on the other side of the room. Which statement best describes this observation?
Particles are moving from regions of high concentration to low concentration.
Particles are moving from regions of low concentration to high concentration.
Particles are moving through a small opening into a smaller volume.
Particles are moving through a small opening into a larger volume.
Particles are moving from regions of high concentration to low concentration. Hence, option A is correct.
What is diffusion?Diffusion is the movement of a substance from an area of high concentration to an area of lower concentration.
Diffusion results from the random motion of molecules by which there is a net flow of matter from a region of high concentration to a region of low concentration.
This process can neither be stopped nor reversed. It occurs when the medium surrounding the cell has a higher water concentration than the cell.
Hence, option A is correct.
Learn more about the diffusion here:
https://brainly.com/question/24746577
#SPJ1
Answer: A. Particles are moving from regions of high concentration to low concentration.
Explanation:
Got it right, EDGU, 2023
Which chemical element, primarily used in the production of batteries, has the symbol co on the periodic table?.
Answer:
the sodium
Explanation:
A(n) _?_ is generated in a wire when it moves across a magnetic field.
Answer:
Electromagnetic induction
Explanation:
i think
The equation H+(aq) + OH-(aq) → H2O(l) is the net ionic equation for the reaction of an aqueous mixture of:
answer choices:
-calcium carbonate and hydrochloric acid
-postssium hydroxide and sodium hydroxide
-barium carbonate and sulfuric acid
-hydrocyanic acid and hydrogen sulfide
-sodium hydroxide and hydrochloric acid
The net ionic equation shown is for the reaction of an aqueous mixture of sodium hydroxide and hydrochloric acid.
What is net ionic equation of a reaction?A net ionic equation is an equation of a reaction which only depicts the ions which react to form a product.
In a net ionic equation, the spectator ions are removed.
The net ionic equation shows a reaction between hydrogen ions and hydroxide ions to form water.
Therefore, the net ionic equation shown is for the reaction of an aqueous mixture of sodium hydroxide and hydrochloric acid.
Learn more about net ionic equation at: https://brainly.com/question/13879496
#SPJ1
You find a mysterious white powder in your kitchen. It could be cream of tartar (pH=5), sugar (pH=7), baking soda (pH=8), or drain cleaner (pH=14). Explain which pH indicator(s) you would use to determine the unknown substance.
1) Phenolphthalein (PHT) 2) Red cabbage 3) Bromthymol blue 4)Congo red (CR)
The pH indicators to be used are Phenolphthalein, Red cabbage, Bromthymol blue and Congo red.
What are pH indicators?Indicators are substances which change color as the pH of a medium changes.
The common indicators and their pH range is as follows:
Phenolphthalein - pH range of 8.3 and 10.5Red cabbage - pH 2 to 10Bromthymol blue - 6.0 to 7.6Congo red - 3.0 to 5.2Therefore, the indicators to be used are Phenolphthalein, Red cabbage, Bromthymol blue and Congo red.
Learn more about pH indicators at: https://brainly.com/question/13779537
#SPJ1
what is specific heat capacity
Answer:
A
Explanation:
Answer:
a
Explanation:
a covalent bond between two different atoms in which the bonding is not shared equally is a a) polar bond b) non polar bond c) ionic bond d) hydrogen bond
Answer:
polar bond
Explanation:
This is the definition of a polar bond.
If fluorine gas (F₂) occupies a volume of 45.5 L at a pressure of 850
mmHg and a temperature of 100.0°C, what is the mass of fluorine gas
(F₂)?
Taking into account about the ideal gas law, the mass of fluorine gas is 63.2244 grams.
What is ideal gas lawAn ideal gas is a theoretical gas that is considered to be composed of randomly moving point particles that do not interact with each other. Gases in general are ideal when they are at high temperatures and low pressures.
The pressure, P, the temperature, T, and the volume, V, of an ideal gas, are related by a simple formula called the ideal gas law:
P×V = n×R×T
where:
P is the gas pressure.V is the volume that occupies.T is its temperature. The universal constant of ideal gases R has the same value for all gaseous substances. R is the ideal gas constant.n is the number of moles of the gas.Definition of molar massThe molar mass of substance is a property defined as its mass per unit quantity of substance, in other words, molar mass is the amount of mass that a substance contains in one mole.
Mass of fluorine gasIn this case, you know:
P= 850 mmHg= 1.11842 atm (being 1 mmHg= 0.00131579 atm)V= 45.5 LT =100 °C= 373 K (being 0°C= 273 K)R= 0.082 [tex]\frac{atm L}{mol K}[/tex]n= ?Replacing in the ideal gas law:
1.11842 atm ×45.5 L = n×0.082 [tex]\frac{atm L}{mol K}[/tex]× 373 K
Solving:
n= (1.11842 atm ×45.5 L)÷ (0.082 [tex]\frac{atm L}{mol K}[/tex]× 373 K)
n= 1.6638 moles
The molar mass of F₂ is 38 g/mole. Then you can apply the folowing rule of three: If by definition of molar mass 1 mole of the compound contains 38 grams, 1.6638 moles of the compound contains how much mass?
[tex]mass= \frac{1.6638 molesx38 grams}{1 mole}[/tex]
mass= 63.2244 grams
Finally, the mass of fluorine gas is 63.2244 grams.
Learn more about
the ideal gas law:
brainly.com/question/4147359
molar mass:
brainly.com/question/5216907
brainly.com/question/11209783
brainly.com/question/7132033
brainly.com/question/17249726
#SPJ1
Indicate if each state below is either True or False: a. If a substance is oxidized, it gains electrons b. If an ion is oxidized, its oxidation number increases c. Oxidation can occur without oxygen d. Oxidation can occur without reduction
Answer:
a. False
b. True
c. False
d. True
What change would shift the equilibrium system to the left?
ag) +b(s) + energy = 3c)
o adding more of gas c to the system
o heating the system
increasing the volume
o removing some of gas c from the system
Adding more gas C to the system would shift the equilibrium system to the left.
What is a chemical balance?In a chemical reaction, there is an equilibrium determined by several factors, such as mole concentration, increase or decrease in temperature and addition of mass.
When the amount of reactants is increased, the reaction favors the side of the products and vice versa.
So, to shift the equilibrium to the left, that is, to the reactant side, more of the gas C must be added.
Learn more about chemical balance here:
brainly.com/question/8062886
#SPJ1
How many moles of CH4 are
in 64.2 g CH4?
64.2 g CH4
1 mol CH4
16.05 g CH4.
[?] moles CH4
Answer:
4
Explanation:
64.2÷16.5
The moles of CH4 are in 64.2 g CH4.
The mole
The mole designates an extremely large number of units, 6.02214076 × 1023. The General Conference on Weights and Measures defined the mole as this number for the International System of Units (SI) effective from May 20, 2019. The mole was previously defined as the number of atoms determined experimentally to be found in 12 grams of carbon-12. The number of units in a mole also bears the name Avogadro’s number, or Avogadro’s constant, in honor of the Italian physicist Amedeo Avogadro (1776–1856). Avogadro proposed that equal volumes of gases under the same conditions contain the same number of molecules, a hypothesis that proved useful in determining atomic and molecular weights and which led to the concept of the mole. (See Avogadro’s law.)
Learn more about moles
https://brainly.com/question/21911991
#SPJ2
A basketball is hit and experiences a net force of 5N, which causes it to accelerate at 8 m/s2. What is the mass of the basketball?
please i needed
Answer:
0.625 kg
Explanation:
Formula :
Force = mass × acceleration
=========================================================
Given :
⇒ Force = 5 N
⇒ Acceleration = 8 m/s²
===========================================================
Solving :
⇒ 5 N = mass × 8 m/s²
⇒ mass = 5/8
⇒ mass = 0.625 kg
a sci2 molecule has __ bonds and a __ molecular shape. As a result, SCI2 molecule is ___
A sample of oxygen occupied 626 mL when the pressure increased to 874.27 mm Hg. At constant temperature, what volume did the gas initially occupy when the pressure was 771.75 mm Hg?
Answer:
709 (With sig figs)
Explanation:
Pressure(1) * volume(1) = Pressure(2) * volume(2)
771.75 mm Hg * unknown = 874.27 mm Hg * 626 mL
771.75 mm Hg * unknown = 547,293.02 mm Hg*mL
Divide both sides by 771.75 mm Hg
Unknown = 709 (With sig figs)....709.158432 (without sig figs)
Which is the electron configuration for bromine?
O 1s22s22p 3s23p64s²3d¹04p5
O 1s²2s22p 3s23p64s23d¹04p6
O 1s²2s22p 3s23p44s²3d¹04p5
O 1s22s22p63s23p64s23d94p5
Bromine is 35th element in periodic table. The electronic configuration of bromine (35) is 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁵.
What is electronic configuration ?Electronic configuration is the distribution of electrons in the energy levels, sublevels, and orbitals of an atom or molecule. It describes how the electrons are arranged in the various shells or energy levels around the nucleus of an atom.
The electronic configuration of an atom is determined by the number of electrons and the rules of electron filling in the atomic orbitals. The electron filling is based on Aufbau principle.
Bromine is 35th element in periodic table. It is a non metal in the halogen group - group 17. Thus it has a total of 35 electrons. Hence, its electronic configuration is, 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁵.
Find more on electronic configuration:
https://brainly.com/question/29757010
#SPJ5
