You’re going on a plane from Alaska to Florida and you’re taking your bike. It’s the middle of the winter. You fill up your tires before you leave to a pressure of 4.72 atm on a day that is -3.50°C. When you arrive in FL at 42°C, you check the pressure in your tires before you ride and find the pressure to be:
Answer:
5.52atm
Explanation:
Using the pressure law formula:
P1/T1 = P2/T2
Where;
P1 = initial pressure (atm)
P2 = final pressure (atm)
T1 = initial temperature (K)
T2 = final temperature (K)
According to the question, the following information were provided;
P1 = 4.72 atm
P2 = ?
T1 = -3.50°C = -3.50 + 273 = 269.5K
T2 = 42°C = 42 + 273 = 315K
Using P1/T1 = P2/T2
4.72/269.5 = P2/315
CROSS MULTIPLY
4.72 × 315 = 269.5 × P2
1,486.8 = 269.5P2
P2 = 1,486.8 ÷ 269.5
P2 = 5.52atm
How is energy transferred in a chemical reaction
Answer:
Answer
Explanation:
All chemical reactions involve energy. Energy is used to break bonds in reactants, and energy is released when new bonds form in products. Endothermic reactions absorb energy, and exothermic reactions release energy. The law of conservation of energy states that matter cannot be created or destroyed.
How many moles in 53.4 grams of CCl4.
Generic formular: Mole = mass/molar mass
molar mass of CCl4 = 153.811 g/mol
Mole of CCL4 = 53.4/153.811 = 0.347 mol
The process that fuels a star is BEST described as
A)
helium molecules being burned by fire.
B)
fusion of helium molecules to form hydrogen.
C)fission of helium molecules to form hydrogen.
D)
hydrogen molecules being forced together by gravity.
Answer:d
Explanation:
d
Hydrogen molecules being forced together by gravity is what best describes how a star is fuelled.
What is Gravity?This is defined as the the universal force of attraction acting between all matter.
Hydrogen molecules is forced together by gravity which is how stars are fuelled in space thereby making option D the most appropriate choice.
Read more about Stars here https://brainly.com/question/3357478
What is the molecular geometry of a molecule with 4 outer atoms and 1 lone pair on the central atom?
Answer:
See explanation
Explanation:
The valence shell electron pair repulsion theory states that; the number of electron pairs present on the valence shell of the central atom in a molecule is the final determinant of shape of the molecule.
Based on this theory, the electron domain geometry of a molecule having 4 outer atoms and 1 lone pairs on the central atom should be based on a trigonal bipyramid. The molecular geometry of this molecule is see saw with a bond angle of <90 degrees(axial) and <120 degrees(equatorial).
i did not mean to publish this ;-;
Answer:
dang
Explanation:
Answer:
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1.How many grams of zinc Zn and oxygen O2 will be needed to form 324 grams of ZnO after the reaction?
Answer: pretty sure its 0.214 moles * 40.3g/mole = 8.6g (2 sig figs) of MgO, and
0.035 moles * 40.3g/mole = 1.4g of MgO
Explanation:
How many atoms are in 14 moles of I? Watch your significant figures.
A. 8.4 x 10^24 atoms of l
B. 8.43 x 10^24 moles of l
C. 8.4 x 10^23 atoms of I
D. 8.43 atoms of l
Answer:
may be A, 8.43 × 10........ atoms of l
What can be used to measure the ph of a substance
DUE TONIGHT!
I need help doing this question and please type an ACTUAL answer. I don’t want none of that “aNsWeR iN FiLe”. Thank you!
Calculate the specific heat (Cp) for indium metal given a 1.0 mole absorbs 53.0 J
while increasing in temperature from 297.5K to 299.5K.
Answer:
27J/Kmol
Explanation:
Heat = number of moles times the Moeller heat capacity chimes the change in temperature.
^ Q = nC△T
^ C = Q/ n△T = +53J / (1mol) (299.5K - 297.5K)
^ = 26.5 (rounded to 27)
What is the difference between the coyotes and the gray squirrel population size in year 11?
Answer:
https://www.northallegheny.org/cms/lib/PA01001119/Centricity/Domain/1330/Concept8ecology.pdf is the cite that i got the answers for that form hop it helps
Explanation:
Answer:
As the squirrel population increases their resources become more scarce, putting a limit on population size
Explanation:
Lysol Power Toilet Bowl Cleaner contains 9.5% hydrochloric acid. Explain why this would be necessary to clean toilet bowls that have white or rust-coloured deposits
Answer:
The acid will absolutely remove the hard water deposits that are trapping the stains. The longer it soaks, the less you have to scrub. It works for hard water stains, limescale, and rust!
Explanation:
hope this helped you out.
(1.7m - 2) + (2m – 4)
Answer: 3.7 m − 6
Explanation: Simplify the expression.
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Using the following equation, if you used 20 moles of O2, how many moles of H2O would be produced?
2H2 + O2 → 2H2O
a)10 mol
b)40 mol
c)5 mol
d)20 mol
Answer:
b
Explanation:
what happens during rusting
A. iron oxide decomposes to iron releasing oxygen
B. iron and oxygen react to form iron oxide
C. iron combusts in oxygen
D. water reacts with iron releasing oxygen
Answer: B
Explanation: I had an even lengthier explanation but Brainly is being a butthead. But I got it right on my test for those who want to know.
Rusting is the process of corroding metallic parts by the action of water and air. Iron forms iron oxide by reacting with water or air.
What is rusting ?Rusting is the process of corrosion of metallic parts by forming a red oxide film on the surface of the metals containing Fe. Metals on reacting with water or air destroys by the action of oxygen.
Mostly iron and copper undergo corrosion. Corrosion is an electrochemical process by which the metal part undergo reduction and deposits in cathode.
Iron easily undergo corrosion forming rust or the red colored iron oxide. Iron react with water through air or water and forms iron oxide on the metal surface which eventually cover the whole metal.
Find more on rusting:
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how many neurons are in lithium
How do I revise for a science test due tomorrow? I haven’t revised but I have to get a good score. Anyone please help!
Answer:
in my opinion find some stuff to help u with it test if you are aloud to bring in a revision boom into your test and get a good night sleep if you can and try not to get stressed about it
.Which best describes the structure of 2-butene?
A. a four-carbon hydrocarbon with a double bond between the second and third carbon atoms
B. a four-carbon hydrocarbon with a branching point at the second carbon atom in the chain
C. a four-carbon hydrocarbon with a double bond between the first and second carbon atoms
Answer:
A.
Explanation:
The 2 - butene is an alkene with the formula C4H8, which can be used as the polybutene monomer or co-polymer. It is a compressed liquefied gas colorless, highly flammable characteristic odor. Prolonged exposure to this gas can cause frostbite causing a lowering of consciousness. Its formula is C4H8 and it is made up of 4 carbon atoms.
The best structure that describes 2-butene is that of Option A.
Which type of fat is a solid at room temperature and does not have double bonds between carbon
atoms?
Triglycerides are made from an ester of glycerol and
are important building blocks of fats.
DONE
Answer:
Saturated Fats
Explanation:
Saturated fats are all of the above.
Also, Saturated fat is very unhealthy. Only consume it in small amounts.
Answer:
Saturated Fat
Fatty Acid
Fatty Acid
Explanation:
Determined from the sum of potential and kinetic energy in a substance
A. Heat
B. Potential energy
C. Thermal energy
D. Total internal energy
E. Kinetic energy
A sample of nitrogen gas occupies 9.20 L at 21degrees and 0.999m the pressure is decreased to 0.802 am at constant temperature, what is the
newly occupied volume?
Answer: The newly occupied volume is 11.46 L
Explanation:
Boyle's Law: This law states that pressure is inversely proportional to the volume of the gas at constant temperature and number of moles.
[tex]P\propto \frac{1}{V}[/tex] (At constant temperature and number of moles)
[tex]P_1V_1=P_2V_2[/tex]
where,
[tex]P_1[/tex] = initial pressure of gas = 0.999 atm
[tex]P_2[/tex] = final pressure of gas = 0.802 atm
[tex]V_1[/tex] = initial volume of gas = [tex]9.20 L[/tex]
[tex]V_2[/tex] = final volume of gas = ?
[tex]0.999\times 9.20=0.802\times V_2[/tex]
[tex]V_2=11.46L[/tex]
Therefore, the newly occupied volume is 11.46 L
List four reasons why scientists perform experiments.
Edit: this is for scientific research not chemistry, but they don't have that as a subject on here.
Answer:
1.To discover new things.
2.To improve accuracy of existing experiment.
3.To prove or disprove theories.
4.To find anomalies in experiment.
What object would have more gravitational potential energy, a skydiver up in the air inside of a plane, or that same skydiver after he/she has jumped out of the plane?
Answer:
Gravitational potential energy is a direct function of weight and height. Higher the object, high is the gravitational potential energy.
Therefore the skydiver inside of the plane has high gravitational potential energy than the same diver after she has jumped because height is now decreased as he is going down.
A truck at the top of the hill has higher gravitational potential energy then when it is at the bottom of the hill. Why does it roll downhill?
1. To increase its kinetic energy
2. To lower its potential energy
3. To increase the entropy of the universe
4. To decrease the entropy of the universe
Answer:
An object that goes up a hill will be going at a slower speed at the top than at the bottom of the hill. This is because moving up or down a hill changes one kind of energy into another. Objects at the bottom of the hill have more kinetic energy, which means they are moving faster.
Explanation:
Based on the kinetic theory, which statement is true?
Matter is made up of only charged particles.
The particles of matter are stationary.
The particles of matter have zero kinetic energy.
Matter is composed of very small particles.
Answer:Matter is made up of only charged particles.
Explanation: Took the test
PLEASE ANSWER ASAP!!!! i need it now
Answer:
não sei ainda mas acho que e A
Answer:
e c f
Explanation:
read the question and it tells you how to do it and I can get you to help
Bases and acids are _
A. Mixtures
B. Gases
C. opposites
D. The same
Answer:
opposite
Explanation:
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The mass in a chemical reaction is found in
the energy produced by the reaction
the explosion produced by the chemical reaction
the atoms involved in the chemical reaction
the bonds involved in the chemical reaction
Answer:
C: The atoms involved in the chemical reaction
Explanation:
In a chemical reaction, when we balance it up, the number of moles or atoms on the left side must equal that on the right hand side. And thus, the mass is found in the atoms involved in such chemical reaction.
Which environment is BEST for an organism that sleeps during the day and digs holes in the ground for shelter?
A
Compounds are ________ substances.
A.)neutral
B.)charged
C.)ionized
D.)non-neutral
Answer:
A.)neutral
because their ions have equal and opposite charges whose resultant charge is zero