Answer:
277.8 grams of ethanol
Explanation:
C2H5OH(l)+3O2(g)⟶2CO2(g)+3H2O(l)
It is important to understand that before we can proceed with solving any problem that has to do with stoichiometry, we must first note down the correct and balanced chemical reaction equation.
Number of moles of water formed= mass of water/ molar mass of water
Molar mass of water = 18gmol-1
Number of moles of water = 325g/18 gmol-1= 18.1 moles of water
From the balanced reaction equation;
1 mole of ethanol yields 3 moles of water
x moles of ethanol yields 18.1 moles of water
Hence;
x= 18.1 × 1 / 3 = 6.03 moles of ethanol
Molar mass of ethanol= 46.07 g/mol
Therefore mass of ethanol originally present= 6.03 moles × 46.07 g/mol = 277.8 grams of ethanol
A person applies a force of 200 N over 1.5 m to a jack. The jack exerts a 1000-N force on a car a distance of 0.02 m. What is the efficiency rating of the jack? HINT: Use work formula first to solve for WORKout and again for WORKin...then use efficiency formula.
Answer:
The efficiency rating of the jack is 0.067.
Explanation:
We have, a person applies a force of 200 N over 1.5 m to a jack. The jack exerts a 1000-N force on a car a distance of 0.02 m.
It is required to find the the efficiency rating of the jack. It is equal to the ratio of output work to the ratio of input work. So,
[tex]\eta=\dfrac{1000\times 0.02}{200\times 1.5}\\\\\eta=0.067[/tex]
Thus, the efficiency rating of the jack is 0.067.
How long will it take the Sun to go around the galaxy once? a. 200 million years c. 100 thousand years b. 10 years d. 5 billion years
state symbol for ammonium nitrate solution (Can anyone help with this please?)
Answer:
NH^4NO^3
Explanation:
Ammonium nitrate, (NH4NO3), a salt of ammonia and nitric acid, used widely in fertilizers and explosives.
Which topic is commonly used to explain activation energy and how chemical reactions happen? reaction rate collision theory velocity distribution spontaneous reaction
Collision theory
B. in edge
9. Which series shows levels of organization in order from the smallest to the largest
structure?
and Chemical
e
A cell, atom, molecule, organism
7s
B atom, molecule, cell, organism
and pH
C molecule, atom, cell, organism
D cell, molecule, atom, organism
Life
lasic Units of Life
Answer:
B. Atom, molecule, cell, organism
Explanation:
Atoms make up molecules. Molecules make up cells. Cells make up tissue. A number of tissues working together creates an organ. Multiple organs working together creates an organ system. Organ systems working together creates one happy, functioning organism. :)
What is the 10th element of the periodic table?
Answer:
Neon
Explanation:
Answer:
Neon
Explanation:
Open this periodic table and you can see the names and numbers of every element
Hope it helps! :)
In 1990, the northern spotted owl was listed as endangered. Because of this, millions of acres of forests in the Pacific
Northwest became protected habitat. This stopped the timber industry from being able to cut down trees there. Which
of these was MOST LIKELY responsible for this?
A)
Clean Air Act
Eliminate
B)
Species Survival Plan
C)
Endangered Species Act
D)
Resources Conservation and Recovery Act
Answer:
the endangered spices act
Explanation: The US Endangered Species Act (ESA) is our nation's most effective law to protect at-risk species from extinction, with a stellar success rate: 99% of species listed on it have avoided extinction.
Answer:
C
Explanation:
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Answer: c
Explanation:
their is less matter to insulate so the smaller the amount of water the easier the temperature can be changed
Urgent. Please help. I need the correct answer
Answer:
1. B - Both are monbasic.
B - Both are monbasic.2. B - fast but contains more water than acid
B - Both are monbasic.2. B - fast but contains more water than acid3. D - Acids made from oxides of non metals
B - Both are monbasic.2. B - fast but contains more water than acid3. D - Acids made from oxides of non metals4. C. Zn(OH)2
B - Both are monbasic.2. B - fast but contains more water than acid3. D - Acids made from oxides of non metals4. C. Zn(OH)25. C - Neutralization
B - Both are monbasic.2. B - fast but contains more water than acid3. D - Acids made from oxides of non metals4. C. Zn(OH)25. C - Neutralization6. B - H3O+
Explanation:
According to reaserch,
According to reaserch,An neutralization reaction can be defined as a chemical reaction in which an acid and base quantitatively react together to form a salt and water as products. In a neutralization reaction, there is a combination of H+ ions and OH– ions which form wa acid anhydride is an acid anhydride that is an organic compound.
According to reaserch,An neutralization reaction can be defined as a chemical reaction in which an acid and base quantitatively react together to form a salt and water as products. In a neutralization reaction, there is a combination of H+ ions and OH– ions which form wa acid anhydride is an acid anhydride that is an organic compound. An acid anhydride is a compound that has two acyl groups bonded to the same oxygen atom.
Which statement about the mass of subatomic
particles is false?
a)A proton has a mass of 1 amu.
b)A neutron has slightly more mass
than a proton.
C)An electron has slightly less mass
than a proton.
d)none of the above
Answer:
C
Explanation:
Both proton and neutron have a mass of 1 atomic unit. ( proton positive but neutron no charge) .
even though they both has a mass of 1 amu , they slightly differ in mass. neutron has slightly greater mass than proton .
but electrons are very smaller than protons and neutrons. electron has 1/1840 mass of proton. so they are very smaller than protons.
answer is C
What is Ky for H2BO3(aq) = H+(aq) + H2B03 (ag)?
А. К. :
[H,BO, 1
[H+ ][H,80,)
В. К.
[H+ ][H,BO,
[H,B03]
C. Ka = [H2B03][H+][H2B031
D. Ka = [H+][H2B031
Answer:
The answer is option c.
Hope this helps.
Hi All,
What are good Science Questions for:
- Chemical Reactions
- Space
- Ecology
Please help.
Answer:Combination.
Decomposition.
Single displacement.
Double displacement.
Combustion.
Redox.
Explanation:
What are two ways drugs can increase the concentration of neurotransmitters in a synapse?
Answer:
naturally, through diet or exercise or drugs, specifically receptor antagonists
Explanation:
diet/exercise - diet is self explanatory, since a healthy diet would mean that your body would be balanced, and wouldn't struggle with producing NTs
drugs - any type of drug will mimic the behavior of NTs, but receptor antagonists specifically will increase the concentration of neurotransmitters in a synapse. Antagonists would block the receptors, and thus the NTs that were intended for the blocked space, will not have anywhere to go. As a result, the NTs will stay in the synapse, and cause an increase in the concentration of NTs.
ps: you'd have more luck asking this question in biology
three products of destructive distillation of coal
please answer quickly
Answer:
the three products of destructive distillation of coal are:-
1. coal gas
2. coke
3. ammonia liquor
Answer:
Coke, coal gas, gas carbon, coal tar, ammonia liquor, and coal oil.
Explanation:
Which would slow down a reaction that is occurring in a solution at 25 degrees Celcius?
Question 11 options:
increase the air pressure above the solution
add a catalyst
put the solution over ice
add 10mL of water at 30 degree Celcius
Answer:
put the solution over ice.
how do you separate sand and zinc?
Answer:
By using magnet.
Explanation:
Put sand and zinc in the bowl.
Take a magnet an bring it close to the bowl.
The zinc from the sand will be attracted towards the magnet.
In this way it will be separated.
If all carbon dioxide coming out of volcanoes were to remain in the atmosphere, what further effect would this have on Earth’s temperature?
The effect of carbon dioxide that is coming out of volcanoes can be global warming.
Effect of carbon dioxide:CO2 has been demonstrated to be a critical supporter of air contamination, playing a significant job in the greenhouse effect. That is on the grounds that carbon dioxide traps rays at the ground level, bringing about ground-level ozone. That keeps the earth from cooling during the evening and warms sea waters.
More carbon dioxide in the atmosphere will lead to global warming.
Find more information about global warming here:
brainly.com/question/3553382
The effect of carbon dioxide that is coming out of volcanoes can be global warming.
What is the effect of carbon dioxide?[tex]CO_2[/tex] has been demonstrated to be a critical supporter of air contamination, playing a significant job in the greenhouse effect.
That is on the grounds that carbon dioxide traps rays at the ground level, bringing about ground-level ozone.
That keeps the earth from cooling during the evening and warms sea waters.
More carbon dioxide in the atmosphere will lead to global warming.
Find more information about global warming here:
brainly.com/question/3553382
#SPJ2
Marek is trying to push a box of sports equipment across the floor. The arrow on the box is vector representing the force that marek exerts. What are the forces acting up one the box?
Answer quick
Answer:
Gravity force (friction towards Marek ).
Explanation:
According to the situation, Marek try to push the box which contains some mass because of sports equipment
Marek tries to push the box, but gravity tries to the down box on the floor.
So, box and floor create friction towards Marek
.
Answer:
Gravity force
Explanation:
In the reaction, 2K (s) + 2H2O (l) produces 2KOH (aq) produces H2 (g), which of the reactants is a solid
Answer:
k
Explanation:
2K (s) + 2H2O (l) produces 2KOH (aq) produces H2 (g),
2K (s) + 2H2O (l) --> 2KOH (aq) + H2 (g)
(s) = solid
(l) = liquid
(g) = gas
Left hand side are reactants
2K (s) + 2H2O (l)
Right hand side are products
2KOH (aq) + H2 (g)
How is Earth unique?
Answer:
All of the above
Explanation:
Answer:
All of the above
Explanation:
Earth is the only planet in our solar system that has a large amount of liquid water. About 74% of the surface of Earth is covered by liquid or frozen water. Because of this, people sometimes call it the blue planet. Because of its water, Earth is home to millions of species of plants and animals
Thank me later
Hope this helps!!!
At STP, the element oxygen can exist as either O2 or O3 gas molecules. These two forms of the element have (1) the same chemical and physical properties (2) the same chemical properties and different physical properties (3) different chemical properties and the same physical properties (4) different chemical and physical properties
Answer:
O2 and O3 are allotropes of Oxygen, therefore they have (4) different chemical and physical properties.
Explanation:
What are the Functional properties of boiled rice?
Please if you can write it in your words.
To build a boat in which material strength is the greatest concern, the best material to use would be?
A) PVC
B) aluminum
C) copper
D) There is not a clear choice.
Thank you
What is the name of this molecule?
Answer:
Pentane
Explanation:
Answer:
Hexane
Explanation:
alkane
single bonds and saturated hydrocarbon
the formula is C6H14
When k-37 undergoes positron emission what is the resulting atom
Answer:
The resulting atom is argon
Explanation:
Positron emission is a type of radioactive decay known as beta plus decay. This reaction is characterized by an element having an increase in the number of neutrons and a decrease in the number of protons.
This affects the atomic number in which it is decreased by one while the mass number remains unchanged.
During which time interval does the substance exist as both a liquid and a solid
The time interval in which a substance exists as both liquid and solid is called ; Triple point
A triple point is a time interval in a substance when the pressure and temperature of the substance causes the substance to exist in more than one phase at a time. Substances that exhibit this characteristic are called non-Newtonian fluids.
A good example of a substance that exist in both liquid and solid form within this time interval is Potassium.
Hence we can conclude that the time interval in which a substance exists as both liquid and solid is called triple point.
Learn more : https://brainly.com/question/23919909
Although your question has some missing data a general answer within the scope of your answer is provided above
Give examples of other amino acids that serve as precursor and state for what?
Explanation:
Congenital erythropoietic porphyria, for example, prematurely ... Uroporphyrin I, coproporphyrin I, and other symmetric .
What does X represent for this transmutation?
96/242Cm + X→ 98/245Cf + 01n
gamma
+10e
24He
−10e
Answer:
2 4He
Explanation:
Please see attachment for explanation.
Answer:2/2 he
Explanation:
the reaction below shows a system in equilibrium how would an increase in the concentration of chemicals affect this reaction?
Answer:
Option B. The equilibrium of the reaction would shift to the right.
Explanation:
According to Le Chatelier's principle, when an external constrain such as change in concentration, temperature or pressure is imposed on a chemical system in equilibrium, the equilibrium position will shift in order to neutralize the effect.
Now, let us answer the question above.
From the question given above, the equation is:
A + B <===> C + D
Increasing the concentration of A will shift the equilibrium position to the right.
This is true because increasing the concentration of A means having more reactants in the system. So the reactants react to produce more product thereby shifting the equilibrium position to the right.
What is observed when a solution of potassium iodide is added to silver nitrate solution ? a) No reaction takes place (b) White precipitate of silver iodide is formed (c) yellow precipitate of Agl is formed (d) Agl is soluble in water.
Answer:
c) yellow precipitate of Agl is formed
Explanation:
KI + AgNO3 = AgI (s)+ KNO3
c) yellow precipitate of Agl is formed
