help would be much appreciated
Answer:
helium oxide + surfuric acid lithium carbon+ water
2C2H2(g) 5O2(g) → 4CO2(g) 2H2O(g) This is a balanced equation for the combustion of acetylene (C2H2). How many moles of oxygen(O2) are required to react completely with 1. 0 mole of acetylene?.
The moles of oxygen required to completely react with 1 moles of acetylene is 2.5 mol.
The balanced chemical equation for the reaction is given as:
[tex]\rm 2\;C_2H_2\;+\;5\;O_2\;\rightarrow\;4\;CO_2\;+\;2\;H_2O[/tex]
Computation for moles of Oxygen requiredThe stoichiometric coefficient in the balanced chemical equation gives the information for the moles of products and reactants in the reaction.
From the given balanced chemical equation, for reacting with 1 mole of acetylene, 5 moles of oxygen is required.
The moles of oxygen required to react with 1 mole of acetylene are:
[tex]\rm 2\;mol\;C_2H_2=5\;mol\;O_2\\\\1\;mol\;C_2H_2=\dfrac{5}{2}\;\times\;1\;mol\;O_2\\\\ 1\;mol\;C_2H_2=2.5\;mol\;O_2[/tex]
The moles of oxygen required to completely react with 1 moles of acetylene is 2.5 mol.
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In a _______ wave the matter in the medium moves back and forth at right angles to the direction
that the wave travels.
Transverse.
Longitudinal travels in the same direction as medium.
How does scarcity impact society
Answer:
a market/society is dictated by supply and demand and scarify affects the supply of a product because if something is more scarce/rare then usually there is a higher demand and a higher price. This impacts society because it affects the price of things and how much people are willing to give for it
Explanation:
How many neutrons are in an atom of chlorine-36?
a
19
b
need more information
c
17
d
36
Answer:
a 19
Explanation:
Cl-36 has 19 neutrons
17 protons
And 17 electrons
Explanation:
a. 19 neutrons
hope this helps you
have a nice day
Consider chemical reactions between main group metals and non-metals. Based on known bonding patters, which of the following compounds are possible?
Answer:
You didn't list the compounds it gave you so i cant cross check them to see it they are ionic bonds( which is the chemical bonding is formed between metal and nonmetal)
if you reply with the compounds it list I will be happy to check for you
Please help me
Continuing her study of soil, Mara wants to study the composition of some soil samples from two different regions of her state. She places one cup of each sample into a large jar. She slowly adds water until it is near the top. She stirs the water and the soil thoroughly, and then lets the soil sit overnight. She creates this image to record her results.
Compare the ratio of materials in the two soil samples and, based on your knowledge of soil formation, explain how the differences in soils possibly came about.
The soil in the first vessel that has the greatest amount of sand will be poor in organic matter while the other soil sample will be rich in organic matter.
What is soil?The soil is the outermost portion of the earth's crust on which plants grow. There are different types of soil such as;
Sandy soilClay soil Loamy soilHumus soilThe origin of each type of soil depends on the amount of organic matter that it contains. The soil in the first vessel that has the greatest amount of sand will be poor in organic matter while the other soil sample will be rich in organic matter.
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Answer:
the first jar is poor in nutriotion because it has less holding while the other is the oppossitye
Explanation:
Consider the reaction Cu + AgNO3 Ag + CUNO3 Which element is reduced? Which element is the oxidizing agent?
Answer:
Ag is both reduced and the oxidizing agent.
Explanation:
Ag is the answer for both
Cu + AgNO₃ → Ag + CuNO₃
Cu is a reducing agent, and AgNO3 is an oxidizing agent.
What is an oxidizing and a reducing agent?Oxidizing agent:In a chemical process, an oxidizing agent, also known as an oxidant, obtains electrons and becomes reduced. The oxidizing agent often referred to as the electron acceptor, is typically in one of its higher oxidation states since it will receive electrons and be reduced.
Reducing agent:In a chemical process, a reducing agent, also known as a reductant, loses electrons and is oxidized. The electron donor is a reducing substance, which is normally in one of its lower oxidation states. A reducing substance undergoes oxidation because of the redox reaction's electron loss.
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Identify the volume the gas will occupy at STP: 12.12 moles of O2
This problem is providing us with the number of moles of oxygen in a gas sample as 12.12 mol. Thus, the volume those moles occupy is required and found to be 271.5 L.
Ideal gasesIn chemistry, we study ideal gases under the assumption of no interactions among gas molecules, therefore the widely accepted equation, known as the ideal gas equation, we use to study the moles-pressure-temperature-volume relationship is:
[tex]PV=nRT[/tex]
Now, this problem gives n and asks for V at STP, which stands for standard temperature and pressure, taking the values of 273 K and 1 atm, respectively. Hence, we solve for the volume as follows:
[tex]V=\frac{nRT}{P}[/tex]
Thereafter, we plug in the numbers to obtain:
[tex]V=\frac{12.12mol*0.08206\frac{atm*L}{mol*K}*273K}{1atm}\\\\V=271.5L[/tex]
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how large a volume is needed to contain 21 germs of sliver
Density is a physical property of a substance that represents the mass of that substance per unit volume. It is a property that can be used to describe a substance. We calculate the volume as follows:
21 grams Ag ( 1 L / 10.5 grams ) = 2 L of container is needed for the given mass of silver
Hope this answers the question. Have a nice day.
Place the following from smallest to largest
heumatom
carbon-14 atom
electron
proton
glucose molecule
Answer:
i think electron but not sure ans
Answer:
Range
Explanation:
glucose molecule
Proton
heumatom
electron
carbon-14 atom
This is the equation for the dissociation of ammonia gas at 293 K. Delta. H = 145 kJ and Delta. S = 195 J/k. 2NH3(g) Right arrow. N2(g) 3H2(g) Which correctly states the Delta. G for this dissociation and whether the process is spontaneous or nonspontaneous? Use Delta. G = Delta. H – TDelta. S. –87. 87 kJ, spontaneous –50 kJ, spontaneous 87. 9 kJ, nonspontaneous 202. 14 kJ, nonspontaneous.
The delta G for the dissociation is 87,865 joule/kg.
The process is non-spontaneous because the value of Gibbs free energy is positive.
What is dissociation?The breaking up of a compound into a simpler form that can be recombined under other conditions.
Given,
[tex]\bold{2NH_3 (g) = N_2(g) + 3H_2(g)}[/tex]
H = 145 kJ
Delta S = 195 J/k
Determining the G using the following process:
G = H -TS
[tex]\bold{G = (145\times10^3 J) -(293K \times 195 J/K})[/tex]
G = 87,865 Joules/K
Thus, the value of Delta G is 87,865 and the process is non-spontaneous.
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Answer:
C. 87.9 kJ, nonspontaneous
Explanation:
just did the quiz
What are the functions of digestive system
Answer:
ingestion, propulsion, mechanical breakdown, chemical digestion, absorption, and elimination.
Explanation:
Answer: to release waste and process the needed materials used for the construction, maintenance, and healing of the body.
Explanation: In food there are certain things that our body needs such as protein, our body chemically and physically breaks down the nutrients our body needs. Our body also needs a way to get rid of what we don't need through the excretory system.
How many atoms are in 3.6 moles of carbon c atoms
Answer:
There are 2.17×10²⁴ atoms in 3.6 moles of carbon atom
Explanation:
No. of atoms = Mole × NA
= 3.6 × 6.022 ×10²³
= 2.17×10²⁴ atoms
How many electrons are in a neutral carbon-14 atom?.
Answer:
There are six electrons in a carbon-14.
What is the meaning of feedback mechanism in relation to homeostasis?
Answer:
A feedback mechanism is a physiological regulation system in a living body that works to return the body to its normal internal state, commonly known as homeostasis. ... The term “feedback mechanism” was first used in cybernetics to characterize a control system's ability to change its output in response to an input.
Explanation:
According to Einstein, why does the photoelectric effect occur?The photoelectric effect is due to the release of electrons from atoms.The photoelectric effect changes with the emission of an atomic spectrum.The photoelectric effect is related to the number of electrons in the shells around a nucleus.The photoelectric effect has to do with the number of atoms in a material.
Answer:
Option A is the answer!
Explanation:
The photoelectric effect occur due to the release of electrons from atoms. Thus option A is correct.
What is photoelectric effect?The photoelectric effect is defined as a phenomenon in which electrically charged particles are released from or within a material when it absorb electromagnetic radiation.
It is also be defined as an emission of electrons when electromagnetic radiation hits the material.
It can be defined as a phenomena whereby light striking a metal surface causes electrons to be expelled from it.
The photoelectric effect is defined as a phenomena whereby electrons can be released from the surface of a metal when light shines on it.
Thus, the photoelectric effect occur due to the release of electrons from atoms. Thus option A is correct.
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in a sealed and rigid container, a sample of gas at 2.00 atm and 25.0 °c is heated to 50.0 °c. what is the pressure (in atm) of the gas at 50.0 °c?
We have that the the pressure (in atm) of the gas at 50.0 °c is mathematically given as
P2= 2.17 atm
Gay-Lussac's lawThe Gay-Lussac's law states that pressure exerted by gas is directly proportional to the absolute temperature of the gas.
Generally the equation for the Gay-Lussac's law is mathematically given a
P1 / T1 = P2 / T2
Therefore
T1 = 25C
T1= 25 + 273
T1= 298 K
And
T2 = 50C
T2= 50 + 273
T2= 323 K
Therefore
[tex]P2 = \frac{2.00 x 323}{298 }[/tex]
P2= 2.17 atm
Hence, the pressure (in atm) of the gas at 50.0 °c is
[tex]P2 = \frac{2.00 x 323}{298 }[/tex]
P2= 2.17 atm
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difference between a compound and a mixture , Simple and short answer please!!
Matter cannot change liquid to solid true or false
Answer:
yes, I am pretty sure it can
Into which type of reaction would a scientist have to infuse a lot of energy in order to cause the reaction to occur?
A) highly endothermic
B) slightly exothermic
C) slightly endothermic
D) highly exothermic
Answer:
HIGHLY ENDOTHERMIC
Explanation:
Endothermic and exothermic reactions are based on energy absorption and energy release when the product formation occurs in a chemical reaction.
Highly endothermic reactions will need a lot of energy.
What are the endo and exothermic reactions?The reaction in which the reactants absorbs the heat and energy from the system it is present to for the products is called the endothermic reaction.
The chemical reaction in which the heat is produced when the products are created is called the exothermic reaction.
Therefore, option A is correct.
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If you had done the experiment hands-on and the environmental air pressure changed, how would your results have been affected?
Question 3 options:
There is not enough information to make a decision.
There would have been no effect, because air pressure changes would not be strong enough to change the lab results.
There would have been a change in the measurements of balloon volume because air pressure changes would have interfered with the results.
PLEASE HELP!!!
Boyle's law states the relationship between pressure and volume of a gas.
From Boyle's law, we know that volume and pressure of a given mass of gas are inversely proportional to each other. Hence, PV = k.
Now, in carrying out this experiment, the atmospheric pressure is assumed to be constant. If the atmospheric pressure changes during the experiment, here would have been a change in the measurements of balloon volume because air pressure changes would have interfered with the results.
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All metals are good ________ of thermal energy and electricity.
Answer:
all metals are good conductor of thermal energy and electricity.
I don’t know what the correct answer is? Can anyone explain?
Short Answer:
C)
Long Answer:
A- When a solid is heated, it melts and becomes a liquid. (Another older term is Fusion.) An example of this is ice to water when you leave it outside the freezer.
B- When a liquid becomes a gas, it undergoes a process called boiling. Example: When you boil water, it becomes steam.
C- It is called deposition. Example: How snow forms in clouds.
FORENSICS
Micah is a forensic scientist, and he suspects that an illegal drug found at a crime scene is actually a mixture of several substances. Which test should Micah use to help him identify the substances?
spectrophotometry
gas chromatography
microcrystalline
narcotic
Please help asap chemistry homework
Answer:
(See attachment below)
Explanation:
Answer: 4. 5.15 Moles
5. 6.02×10 atoms
. 7. 1.3545×10^23 atoms
8. 1.73075×10^22 atoms
. 10. 3.40499×110 atoms
A chemist prepares a solution of copper) sulfate (cuso4)by weighing out 29.9 g of copper ) sulfate into a 150 into a 150.mLvolumetric flask and filling the flask to the mark with water.
Lol Most people would say c but its A
What information is provided by the specific block location of an element?.
The block location of an element tells the energy sublevel of an element.
What is block location of an element?The term block location refers to the specific block in which an element is found in the periodic table. There are three blocks in the periodic table which are;
s - blockp - blockd - block and f - blockThe block location of an element tells the energy sublevel of an element.
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What is the total number of atoms represented in the
formula CuSO4.5H,0?
Answer:
you have ten hydrogen atoms and five oxygen atoms in total
Explanation:
hope this helps
Using Boyle’s Law, calculate the new volume of the weather balloon at a higher altitude. Assume the volume of the balloon at ground level is 10.0 m3 where the atmospheric pressure is 1.00 atm. What will be its new volume at an altitude of 15 km where the atmospheric pressure is 0.350 atm?
Answer:
Explanation:
V1 = 10 m^3
P1 = 1.00 atmospheres
V2 = ?
P2 = 0.35
Formula
V1 * P1 = V2 * P2
Solution
10 * 1 = x * 0.35 Combine the left and divide both sides by 0.35
10/0.35 = x
x = 28.57 m^3
