Answer: 1.08×10^24 atoms
What is meant by the term chemical bond? What subatomic particles(protons, neutrons, electrons) are most important in bonds?
Explanation:
Chemical Bonding refers to the formation of a chemical bond between two or more atoms, molecules, or ions to give rise to a chemical compound.
The subatomic particles that participate are electrons.
Equimolar amounts of Cl2(g) and CO(g) are injected into an evacuated, rigid container, where they react according to the equation below. Cl2(g)+CO(g)⇄COCl2(g) ΔHrxn=−109kJ/molrxn (a) If 7.0 g of CO(g) is consumed in the reaction with excess Cl2(g), how many moles of COCl2(g) are produced? (b) Which element is oxidized in this reaction? Justify your answer in terms of oxidation numbers.
Answer:
0.25 moles of COCl₂ are been produced
The element that is oxidized is C, it changed the oxidation state from +2 in CO to +4 in phosgene.
Explanation:
Equilibrium reaction:
Cl₂(g) + CO(g) ⇄ COCl₂(g)
Let's convert the mass of CO to moles:
7g . 1mol /28g = 0.25 moles
As ratio is 1:1, we can say that 0.25 moles of COCl₂ are been produced.
1 mol of chlorine reacts to 1 mol of carbon monoxide in order to produce 1 mol of phosgene.
Chlorine is been reduced:
Cl₂ + 2e⁻ ⇄ 2Cl⁻
Change the oxidation state, from 0 (ground state) to -1. Oxidation state decreased.
Carbon is been oxidized.
In CO, carbon has +2 as oxidation state. In phosgene the oxidation state is +4. This oxidation state was increased, that's why it has oxidized.
The element that is oxidized is carbon whose oxidation number was increased from +2 to +4.
The equation of the reaction is;
Cl2(g) + CO(g) ⇄ COCl2(g)
We have been told that the chlorine gas is the reactant in excess hence the carbon monoxide is the limiting reactant.
Number of moles of CO = 7.0 g/28 g/mol = 0.25 moles
Since the reaction is 1:1, 0.25 moles of COCl2 is produced.
The element that is oxidized is carbon whose oxidation number was increased from +2 to +4.
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0.0665 mol of sodium hydroxide (NaOH) is used to completely titrate and neutralize 0.050 L of hydrochloric acid solution (HCl). What is the molarity of the acid?
A. 1.33 M
B. 0.00131 M
C. 2.62 M
D. 0.00262 M
Question 40 (1 point)
Is boron a metal, metalloid, or nonmetal?
Boron is a non metallic element and the only non-metal of the group 13 of the periodic table the elements.
Hope this helps, have a great day!
What is the number of moles of a gas inside a 2.7L airbag at a temperature of 421K and pressure of 6.2atm?
Answer:
.48 moles
Explanation
n=PV/RT
Water contains dissolved oxygen that fish can breathe. Which factor would not increase the amount of oxygen in the water of a fish aquarium?
Answer:Place the water under brighter .
Explanation:
Use the information and table to answer the following question.
A group of students collects data to determine whether compounds were ionic or covalent. They placed each
compound in a small bowl and stuck two open ends of a battery-powered circuit in the compound.
Compound
CO2 (s)
KCI (s)
CaO (s)
SIO2 (s)
Conductive
No
No
No
No
Based on the student's data, can they determine which substances are ionic, and which are
covalent?
A. No, as lonic compounds are only conductive in an aqueous (water) solution.
B. Yes, as all of these compounds are lonic since they are not conductive.
C. No, as covalent compounds are only conductive in an aqueous (water) solution.
C
D. Yes, as all of these compounds are covalent since they are not conductive.
Answer:
d
Explanation
all are compounds
Yes, as all of these compounds are covalent since they are not conductive. Therefore, the correct option is option D.
What is chemical compound?A chemical compound is a material made of several similar molecules (as well as molecular entities) joined by chemical bonds and comprising atoms from various chemical elements.
Chemical reactions, which may entail interactions with other molecules, can change a compound into a distinct substance. Atomic bonds may be shattered or new ones created during this process. Yes, as all of these compounds are covalent since they are not conductive.
Therefore, the correct option is option D.
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Which word should replace the question mark in the diagram?
A) Refraction
B) Reflection
C) Light energy
D) Rainbow
Answer:
Could you provide a diagram?
Explanation:
A balloon takes up 625 L at 0°C. If it is heated to 80°C, what will its new volume be?
Answer:
853.15 L
I hope This is Right!
Apologies if it's not :(
how to get over a guy u have liked for a year and 4 months
Answer:
Try to find someone who is interested in you as well as you are with him. But be chill about it and never ever let yourself think your not perfect enough cause you are thee most phenomenal person in the entire planet and there is no one like you, you are special. P.S. there are alot of cute guys out there you just gotta wait until he finds you or you find him.
Explanation:
Answer:
huh
Explanation:
The mass of an atom is equal to the number of
Neutrons, only
Protons, only
Neutrons plus protons
Electrons plus protons
Explanation:
proton number and neutron number sums up to form the mass number
Answer:
Neutrons & protons
Explanation:
hope it's help..
Two students are having a tug of war. The flag on the rope begins at point Y. team A pulls to the left with force of 120 N. Team B pulls to the right with force of 160 N. Based on these forces, which letter shows the likely movement of the flag?
Choices:
A: W
B: X
C: Y
D: Z
(Please help!!) 20 points
Answer:
the answer is Z b/c wehave to forces and they have different direction. then search the sum of the forces. thus we gain 40 N to right.
How can you determine an atom's atomic mass?
Answer: I think you're supposed to add the protons and neutrons and then that's your answer. Sorry if I'm wrong :/
Explanation:
14. Energy (heat) is always transferred from ___ energy to ___ energy
A. low kinetic; high kinetic
B. high kinetic; high kinetic
C. high kinetic; low kinetic
D. low kinetic; low kinetic
Answer:i pretty sure it is high to low kinetic
Explanation: because heat or energy travels from hot heat to low heat which heat is the same as kinetic
I’m 13 if I did 100 reps of 5 types of push-ups will it build muscle in arms and chest
List two functions organ systems can perform
Answer:
nervous system- sends signals to the brain
respiratory system- sends oxygen to the body
How many moles are in 25 grams of nitrogen trihydride?
Explanation:
molecules NH3 = 1.47 moles x 6.02x1023 molecules/mole = 8.9x1023 molecules of NH3 (to 2 sig. figs.)
water covers over two thirds of earths surface. Yet water shortages are a major problem for many people around the world. Why do u think this is the case?
please answer!! will give brainliest!!
Explanation:
I think it's from over population and global warming and we can't completely drink sea water
I hope it helps
Mushrooms are ___________ that use spores for ______________?
What tool do you use to measure a rectangle?
A. Common balance
B. Ruler
C. Graduated cylinder
Answer:
Ruler
Explanation:
What is the charge of electrons?
Answer:
-1
Explanation:
Knowing that a meteorologist is a scientist whose job requires special training, Leandra interviewed a local meteorologist for a science assignment. She wanted to find out what the important job duties of a meteorologist are. Choose the two that apply.
A. collect and analyze data to make predictions about the weather
B. guess what the weather will be and report it on television
C. carry out investigations of insects and how they affect the environment
D. use observations and technology to determine how global patterns affect weather
She was curious about the important job duties of a meteorologist, which include collecting and analysing data to make weather predictions and comparing weather data from various local, regional, and global sources.
What is the most important role a meteorologist has?Meteorologists perform both observation and investigation. They study maps, satellite data, and radar data to learn about the physical conditions of the atmosphere above them.In addition, they compare weather data from local, regional, and global sources.Many people believe that the person who gives the weather forecast on television is a meteorologist.However, television meteorologists make up a small percentage of all meteorologists.Meteorologists conduct research, teach, consult, and forecast. Meteorologists collect and analyse weather data in offices and research facilities. A weatherman, on the other hand, broadcasts live weather conditions, alerts, and forecasts.To learn more about Meteorologist, refer to:
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How would you know that an organization is a cooperative?
Answer: A cooperative is a private business organization that is owned and controlled by the people who use its products, supplies or services. Although cooperatives vary in type and membership size, all were formed to meet the specific objectives of members, and are structured to adapt to member's changing needs. hope this helps. Can u give me brainliest
Explanation:
are absolute temperature and kelvin temperature scale the same thing
Answer:
No they are not the same..
Explanation:
Absolute temperature is the temperature of an object on a scale where 0 is in the lowest possible energy state while the kelvin is a base unit of temperature.
(Please don’t post a link and actually give an answer)
Why does mixing reactants in different molar ratio’s affect the amount of product and the amount of each reactant left over?
Answer:
https://brainly.com/question/22487248?answering=true&answeringSource=feedPublic%2FhomePage%2F3
Explanation:
HELP ASAP
What was the result of the atomic theory?
A. Alchemy was transformed into a true science.
B. The atom was discovered.
C. Scientists realized there were four main elements.
D. Chemists began to better understand the properties of matter.
The result of the atomic theory was that chemists began to better understand the properties of matter. Therefore, option (D) is correct.
The atomic theory, proposed by John Dalton in the early 19th century, postulated that matter is composed of indivisible particles called atoms. This theory revolutionized the field of chemistry by providing a framework to understand the behavior and interactions of different substances.
By recognizing that matter is composed of discrete atoms with specific properties, chemists were able to explain phenomena such as chemical reactions, the conservation of mass, and the formation of compounds. The atomic theory laid the foundation for modern chemistry, leading to advancements in understanding the structure of atoms, the development of the periodic table, and the ability to manipulate and engineer materials at the atomic level.
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how are enthalpy and entropy related to chemical reactions? (in simple terms)
Answer: Enthalpy is the heat content of a system. The enthalpy change of a reaction is equivalent to the amount of energy lost or gained during the reaction. A reaction is favoured if the enthalpy of the system decreases over the reaction. Entropy refers to the measure of the level of disorder in a thermodynamic system.
Explanation: hi lol
could someone help me!
Consider a cup made of plastic. What are the pros of using plastic?
Answer:
It's cheap to make, and its recyclable
if the heat of combustion of hydrogen is -285.8KJ,what is the heat of formation of water
Answer:
The heat of formation of H2O(g) is likely to be-242,8KJ.
Explanation:
The heat of formation of H2O(g) will be slightly lower than the heat of formation of H2O(1)as some energy is released during condensation of water vapour to liquid water.
the force attraction between the particles are ______in solid _____in liquid and______ in gas
Explanation:
greatest , greater and last
hope it helps