Answer:
3.68 g
Explanation:
[tex]n_{CO2}[/tex] = 18 ÷ 44 = 0.4
2C2H2 + 5O2 → 4CO2 + 2H2O
2 : 5 : 4 : 2
0.409 (moles)
⇒ [tex]n_{H2O}[/tex] = 0.409 × 2 ÷ 4 = 0.2045 moles
⇒ [tex]m_{H2O}[/tex] = 0.2045 × 18 = 3.68 grams
When you draw a bow'across a violin string, which kind of wave is created in
the air surrounding the string?
A. surface
B. electromagnetic
C. longitudinal
D. Transverse
Answer:
C
Explanation:
Answer: C. Longitudinal
Explanation: A P 3 X
Which best explains why ionization energy tends to decrease from the top to the bottom of a group? The number of orbitals decreases. The number of neutrons decreases. Electrons get closer to the nucleus. Electrons get farther from the nucleus.
Answer:
Electrons get farther from the nucleus.
Explanation:
By going from the top to the bottom of a group, the atomic number increases. That would mean that:
The number of orbitals increases, as there are more electrons.A higher atomic number implies an increasing number of neutrons.As there are more electrons, they get farther from the nucleus. The farther an electron is from the nucleus, the easier it is for the electron to be removed from the atom.Ionization energy decreases down the group because electrons get farther from the nucleus hence they are easier to remove.
Ionization energy refers to the energy required to remove an electron from an atom. The ionization energy is a periodic trend that decreases down the group but increases across the period.
The ionization energy decreases down the group because electrons get farther from the nucleus hence they are easier to remove.
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1.35 m solution NaOCl in water is prepared. What is the mole fraction of the NaOCl?
Answer:
NaOCl + H2O → HOCl + NaOH
so the mole fraction is = moles of NaOCl/(moles of NaOCl+moles of H2O)
so for 1.35 NaOCl it will require 1.35 moleof H2O
mole fraction = 1.35/(1.35+1.35)
mole fraction = 1/2 =0.5
is it correct i d ek but i tried :)
The mole fraction of the NaOCl is 0.0237
We'll begin by calculating the mole of solute (NaOCl) in the solution.
Molality = 1.35 mMass of water = 1 KgMole of NaOCl =?Mole = Molality x mass (Kg) of water
Mole of NaOCl = 1.35 × 1
Mole of NaOCl = 1.35 mole
Next, we shall determine the mole of water.
Mass of water = 1 Kg = 1000 gMolar mass of water = 18.01 g/mol Mole of water =?Mole = mass / molar mass
Mole of water = 1000 / 18.01
Mole of water = 55.52 moles
Finally, we shall determine the mole fraction of NaOCl.
Mole of NaOCl = 1.35 moleMole of water = 55.52 moles Total mole = 1.35 + 55.52 = 56.87 moles Mole fraction of NaOCl =?Mole fraction = mole / total mole
Mole fraction of NaOCl = 1.35 / 56.87
Mole fraction of NaOCl = 0.0237
Learn more about mole fraction:
https://brainly.com/question/26051051
1)
Steel Wool Experiment
Before
Observations
After
Observations
Appearance
Steel wool dark gray,
Balloon deflated
Appearance
Steel wool dark
brown; Balloon
inflated
Mass (9)
485.68
Mass (9)
The students data can be seen here. A chemical reaction clearly took
place in the flask. One entry is missing: the mass of the system at the
end of the experiment. What amount should be added to the data
table?
Answer:
Chemical reactions, chemistry, science as inquiry and data analysis. ... Students burn steel wool in both an open and closed environment to understand ... The difference in mass for this small sample of steel wool will be very small. ... careful attention to the balloon! 9. When rusting occurs the properties of the metal changes.
Explanation:
93 Points!!! Which of the following join together to form molecules?
Atoms
Organisms
Organs
Tissues
Answer:
Atoms
Explanation:
Atoms are the smallest thing meaning they form molecules which are made of atoms.
Also, your question is not 93 points but whatever lol.
Answer:
Atoms
Explanation:
I took the test
What is biocapacity?
PLZZ HELP TY
Answer:
Explanation:
The biocapacity or biological capacity of an ecosystem is an estimate of its production of certain biological materials such as natural resources, and its absorption and filtering of other materials such as carbon dioxide from the atmosphere.
If I have 100 mL of oil in a container and 100 mL of water in another
conta in er Which container wouldhave more mass?
Answer:
The answer is 200mL each amount have the same mass
Explanation:
100mL +100ML= 200mL mass in each container
Answer:
200ml
Explanation:
help help help help
Answer:
2,4,6–trimethylheptanal
Explanation:
To name the compound given, we must first obtain the following:
1. Determine the functional group of the compound.
2. Determine the longest continuous carbon chain. This gives the parent name of the compound.
3. Identify the substituent group attached to the compound.
4. Locate the position of the substituent group.
5. Combine the above to obtain the name of the compound.
Now, we shall name the compound as follow:
1. The functional group of the compound is –CHO. Thus, the compound is an alkanal.
2. The longest continuous carbon chain is 7. Thus, the parent of the compound is heptanal.
3. The substituent group attached to the compound is methyl (–CH₃).
NOTE: There are 3 methyl groups attached to the compound.
4. The methyl groups attached to compound are located at carbon 2, 4 and 6.
5. Therefore, the name of the compound is:
2,4,6–trimethylheptanal
what blood vessels and chambers of the heart does a red blood cell pass as it delivers oxygen from the lungs to the brain and return to be oxygenated again.
Answer:
capillaries
Explanation:
hope it helps if I'm not tell me right away.
Answer:
Carotid artery, Jugular veins
The chambers are explained below.
Explanation:
THE BLOOD VESSELS
The carotid artery carries red blood (oxygenated) to the head and the neck region and that obviously include the brain via the aorta. To be precise the internal carotid artery supplies oxygenated red blood cells to brain. The jugular veins carry deoxygenated red blood cells from the head back to the heart via the superior vena cava. The most important function of the jugular vein is to drain deoxygenated blood from brain.
THE CHAMBERS
The left atrium receives oxygenated blood from the lungs and pumps it to the left ventricle which also pumps the same oxygenated blood to the rest of the body through the aortic valve (aorta).
The right atrium receives deoxygenated blood from the body via the vena cava and pumps the deoxygenated blood to the right ventricle which pumps the deoxygenated blood to be oxygenated by the lungs via the pulmonary valve (pulmonary artery).
CONCLUSION
The oxygenated red blood cells from the lung pass through the pulmonary vein through the left atrium to the left ventricle through the carotid artery (internal carotid artery) via the aorta to the brain and
The deoxygenated red blood cells in the brain are drained through the jugular vein via the superior vena cava to the right atrium, which pumps the deoxygenated blood to the right ventricle. From here the deoxygenated blood is pumped to the lungs via the pulmonary artery for oxygenation.
This is my answer, thus if I got your question right.
i If a chemical system is at equilibrium, any change in the system will always result in an increase of which of the following?
1.The reaction that opposes the change
2. The concentration of the product
3. The concentration of the reactants
4. The temperature of the system
Answer:
1.The reaction that opposes the change
Explanation:
Consider the reaction;
A + B ⇄ C + D
If a constraint such as a change in temperature, pressure or volume is imposed on this chemical system in dynamic equilibrium, the equilibrium position will shift so as to annul the constraint.
This shift in the equilibrium position will favour either the forward or reverse reaction depending on the type of constraint imposed on the system.
Hence, If a chemical system is at equilibrium, any change in the system will always result in an increase of the reaction that opposes the change.
what is the acceleration of a 100kg object being pushed with a force of 1000 newton's
Answer:
the person that answered it with the link, dont click it's a virus
Explanation: