Would you expect the water or sugar solution to have the most supercooling? WHY? PLEASE HELP
Answers
Answer:
The water solution
Explanation:
Super freezing occurs when energy is quickly withdrawn from a liquid and it cools below the solidification temperature. This phenomenon occurs due to the fact that the cooling is very fast and does not occur the formation of an initial "point" or crystal, which is generally formed to start the freezing. A small crystal formed will attract the molecules nearby, forming a large crystal, that is, the frozen liquid.
The sugar solution should be distilled so that Super Cooling occurs more efficiently than the water solution because the presence of the sugar would create nucleation points and allow the formation of ice crystals. The super cooled water solution turns very quickly into ice, much faster than the sugar solution. It is also possible to supercooled the water after the homogeneous nucleation point, in which case it eventually solidifies into a type of glass.
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What is ph?how basic a solution is how acidic a solution is the concentration of potassium ions in a solution the concentration of hydrogen ions in a solution
.During the combustion of methane (CH4), one mole of methane gas combines with two moles of oxygen gas (O2) to produce one mole of carbon dioxide gas (CO2) and two moles of water vapor. Which of the following chemical equations correctly represents the combustion of methane described above?
Elements are organized on the periodic table based on their properties. Which statement correctly predicts and explains the chemical reactivity of two metals?A) The alkali metal atom forms a +1 ion, while the alkaline earth metal atom forms a +2 ion.B) The alkali metal atom forms a +2 ion, while the alkaline earth metal atom forms a +1 ion.C) The alkali metal atom has one less shell of electrons than the atom of the alkaline earth metal.D) The alkali metal atom has one more shell of electrons than the atom of the alkaline earth metal.
If the pressure P applied to a gas is increased while the gas is held at a constant temperature, then the volume V of the gas will decrease. The rate of change of the volume of gas with respect to the pressure is proportional to the reciprocal of the square of the pressure. Which of the following is a differential equation that could describe this relationship?
Answers
1 mol ------------ 22.4 L ( at STP )
7.6 mol ---------- x L
x = 7.6 * 22.4
x = 170.24 L
-----------------------------------------------------------------
For C2H3:
1 mol ------------ 22.4 ( at STP)
0.44 mol --------- y L
y = 0.44 * 22.4
y = 9.856 L
hope this helps !.
The volume of 0.44 moles of ethylene gas at STP is approximately 10.33 liters.
To calculate the volume of gases at Standard Temperature and Pressure (STP), we can use the ideal gas law:
PV = nRT
Where:
P = Pressure (at STP, it's 1 atmosphere, or 1 atm)
V = Volume (in liters)
n = Number of moles
R = Ideal gas constant (0.0821 L·atm/mol·K)
T = Temperature (at STP, it's 273.15 K)
Let's calculate the volume for each gas:
For 7.6 moles of Ar (argon):
P = 1 atm
n = 7.6 moles
R = 0.0821 L·atm/mol·K
T = 273.15 K
Now, plug these values into the ideal gas law:
V = (nRT) / P
V = (7.6 moles * 0.0821 L·atm/mol·K * 273.15 K) / 1 atm
V ≈ 172.75 liters
So, the volume of 7.6 moles of argon gas at STP is approximately 172.75 liters.
For 0.44 moles of C2H3 (ethylene):
P = 1 atm
n = 0.44 moles
R = 0.0821 L·atm/mol·K
T = 273.15 K
Now, plug these values into the ideal gas law:
V = (nRT) / P
V = (0.44 moles * 0.0821 L·atm/mol·K * 273.15 K) / 1 atm
V ≈ 10.33 liters
For more such question on ethylene gas visit:
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Answers
Nucleus
↓↓↓↓
Holds the Protons and Neutrons
Orbitals
↓↓↓↓
Electrons
Protons ⇒ Positive particle
Electrons ⇒ Negative charged particles
Neutrons ⇒ No charge
Atomic number → Number of protons in the nucleus
Atomic mass → Protons + neutrons
Answer: The atomic mass of titanium is 47.88 atomic mass units. This atomic mass represents the number of protons plus neutrons in the atom's nucleus.
Answers
The chemical processing breaks…. corn starch,a disaccharide characterized… to sucrose,a simple, six-carbon cycloalkane…corn syrup,a homopoloymer of glucose is corn starch, chemical processing of corn syrup… high fructose corn syrup.
What is glucose ?
A basic sugar, glucose has the chemical formula C6H12O6. The most prevalent monosaccharide, a type of carbohydrate, is glucose.
The primary form of sugar in the blood, glucose serves as the body's cells' main source of energy. Glucose can be produced by the body from other chemicals, or it can be obtained from the meals we eat. The bloodstream carries glucose to the cells. Insulin is one of many hormones that regulate blood glucose levels.
The brain is the most energy-hungry organ in the body and uses half of the body's sugar energy due to its abundance of nerve cells, or neurons. Thinking, memory, and learning are all tightly correlated with blood glucose levels and how effectively the brain uses this substance.
Thus, a homopoloymer of glucose is corn starch.
To learn more about glucose, follow the link;
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Sucrose, a sweet, white crystalline substance, C12 H22 O11, OBTAINED CHIEFLY FROM THE JUICE OF THE SUGAR CANE AND SUGAR BEET, BUT ALSO PRESENT IN SORGHUM, THE sugar maple, some palms, and various other plants, and having extensive nutritional, pharmaceutical, and industrial uses; any of the class of carbohydrates to which this substance belongs, as glucose, levulose, and lactose.
Answers
Answer:
56.4 mmHg
Explanation:
Given:
Vapor pressure of the solution, P solution = 55 mmHg
The mass of sucrose (C₆H₁₂O₆) = 10 g
Also, Molar mass of sucrose (C₆H₁₂O₆) = 180 g/mol
So, moles = Given mass/ molar mass
Hence, moles of sucrose in the solution = 10 g / 180 g/mol = 0.05556 mol
Given that: Mass of ethanol = 100 g
Molar mass of ethanol = 46 g/mol
Hence, moles of ethanol = 100 g / 46 g/mol = 2.174 mol
Mole fraction of solvent, ethanol is:
X ethanol = 2.174 mol / (2.174 + 0.05556) mol = 0.975
Applying Raoult's Law
P solution = X ethanol*P° ethanol
=> P° ethanol = P solution / X ethanol = 55 mmHg / 0.975 = 56.4 mm Hg
Explanation:
The given data is as follows.
Vapor pressure of the solution = 55 mm Hg
Mass of sucrose = 10 g
Molar mass of sucrose = 180 g/mol
Therefore, moles of sucrose present into the solution will be calculated as follows.
No. of moles =
=
= 0.055 mol
Mass of ethanol is given as 100 g and its molar mass is 46 g/mol.
Hence, number of moles of ethanol will be calculated as follows.
No. of moles =
=
= 2.174 mol
As mole fraction =
Hence, mole fraction of etahnol will be calculated as follows.
=
=
= 0.975
Now, using Raoult's Law as follows.
=
=
= 56.4 mm Hg
Thus, we can conclude that the vapor pressure of the pure solvent is 56.4 mm Hg.
Answers
velocity = distance/time = 10km/32.5 mins = 0.3125 km/min
Convert this value to miles per hour using the conversion factors for minutes to hours and kilometers to miles as requested by the problem. This gives an answer of 11.47 miles per hour.
0.3125 km/min x 60 mins./ 1 hour x 1 mile / 1.609 km = 11.47 miles/hour
Answers
The element that has the electron configuration is Darmstadtium.
Electronic configuration:
Since An element with the electronic configuration 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁶5s²4d¹⁰5p⁶6s²4f¹⁴5d¹⁰6p⁶7s²5f¹⁴6d⁸ contains 110 electrons in its electron shells.
Also, the element should be a neutral atom, this number should also equal to its atomic number. Therefore, its atomic number is 110.
The element in the periodic table that has an atomic number of 110 is Darmstadtium, a d-block element, thus a transition metal.
Learn more about electron here: brainly.com/question/24850343
Answer:
Darmstadtium
Explanation:
An element with the electronic configuration 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁶5s²4d¹⁰5p⁶6s²4f¹⁴5d¹⁰6p⁶7s²5f¹⁴6d⁸ has 110 electrons in its electron shells.
Since the element is a neutral atom, this number is also equal to its atomic number. Therefore, its atomic number is 110.
The element in the period table that has an atomic number of 110 is Darmstadtium, a d-block element, thus a transittion metal. It also belong to period 7 in the Periodic table of elements.