Answers
Answer:
3
Explanation:
just randomly sigduxz jsfxbsus usg
Related Questions
The periodic table is organized in horizontal rows and also in vertical columns. Why do you think both rows and columns were used?
Answers
Answer:
27% hope this helps
Explanation:
hope I helped u
Where in the solar system are most gases found, other than the sun?
Answers
Answer:
in the gas giants like jupiter
Which of the following is true about the Lewis structure of NF3? Really need help
Answers
Answer:
All of the above.
Explanation:
Hello there!
In this case, according to the definition of the Lewis structures, which are represented by the valence electrons, we first identify that the N atom has five valence electrons and each fluorine has seven valence electrons.
In such a way, we cans say that N is the central atom due to its lower electronegativity, the molecule has 7+7+7+5=26 valence electrons and the three F-N bonds are covalent, therefore the answer is all of the above.
Regards!
Which elements are more likely to lose electrons?
Ca, Li, F and Ne
Answers
conclusion for polarity of liquid
Answers
Answer:
The polarity of a liquid refers to the separation of electric charge within the molecules of the liquid, resulting in a positive and negative end. Based on this, we can draw the following conclusion:
In conclusion, the polarity of a liquid is an important property that affects its behavior and interactions with other substances. Polar liquids have molecules with an uneven distribution of charge, resulting in positive and negative ends. This polarity influences various aspects, such as solubility, surface tension, and the ability to dissolve other polar substances. Additionally, polar liquids tend to exhibit stronger intermolecular forces, leading to higher boiling and melting points compared to nonpolar liquids. Understanding the polarity of a liquid is crucial for various fields, including chemistry, biology, and material science, as it helps explain and predict the behavior and properties of different substances in a wide range of applications.
PLEASE MARK AS BRAINLIESTAnswer:
The polarity of a liquid refers to the separation of electric charges within the molecule, resulting in a molecule with a positive end and a negative end. The presence or absence of polarity in a liquid has significant implications for its behavior and interactions with other substances.
In conclusion, the polarity of a liquid plays a crucial role in determining its physical and chemical properties. Polar liquids, such as water, have an unequal distribution of charge within their molecules, leading to hydrogen bonding and strong intermolecular forces. These interactions give rise to properties like high boiling points, surface tension, and solubility, making polar liquids excellent solvents and essential for many biological processes.
On the other hand, nonpolar liquids, such as hydrocarbons, have a symmetrical distribution of charge and lack strong intermolecular forces like hydrogen bonding. As a result, they have lower boiling points, weaker interactions, and are typically less soluble in polar solvents. Nonpolar liquids are commonly used as solvents for nonpolar compounds and have different applications in various industries.
Understanding the polarity of a liquid is crucial in fields such as chemistry, biology, and materials science. It helps predict how substances will interact and dissolve in a given solvent, as well as how they will behave in chemical reactions. Additionally, polarity affects the physical properties of liquids, including their viscosity, conductivity, and surface behavior.
In summary, the polarity of a liquid is a fundamental characteristic that influences its behavior, solubility, and reactivity. Whether a liquid is polar or nonpolar has far-reaching consequences in various scientific disciplines and practical applications
Consider this reaction mechanism:
Step 1: C4H9Br C4H9+ + Br- (slow)
Step 2: C4H9+ + OH- C4H9OH (fast)
Which rate law is consistent with the mechanism?
Answers
The slow step is always the rate-determining step. In the slow step, C4H9Br is the only reactant and has a coefficient of 1, so it is first order in the rate law.
atomic number of sodium
Answers
When 148. mg of a certain molecular compound X are dissolved in 75.g of cyclohexane (CH), the freezing point of the solution is measured to be 59 'C. Calculate the molar mass of X If you need any additional information on cyclohexane, use only what you find in the ALEKS Data resource. Also, be sure your answer has a unit symbol, and is rounded to l significant digit. XS ?
Answers
Answer: The molar mass of X is 61.3g/mol
Explanation:
Depression in freezing point is given by:
\(\Delta T_f=K_f\times m\)
\(\Delta T_f=T_f^0-T_f=(6.55^0C-5.9^0C)=0.65^0C\) = Depression in freezing point
\(K_f\) = freezing point constant = \(20.2^0C/mol\)
m= molality = \(\frac{\text{Mass of solute}}{\text{Molar mass of solute}\times \text{Mass of solvent in Kg}}\)
where,
Now put all the given values in this formula, we get
\(0.65^0C=20.2°C/m\times frac{0.148g}}{M\times 0.075kg}\)
\(M=61.3g/mol\)
Thus molar mass of X is 61.3g/mol
Indicate how the concentration of each species in the chemical equation will change to reestablish equilibrium after changing the concentration of the reactant or product. An up arrow indicates an increase in concentration, a down arrow indicates a decrease in concentration, and leaving it blank means there is no change in the concentration
C2H4(g)+Cl2------------>2C2H4Cl2(g)
<-----------
after the concentration of C2H4 is increased __________.
after the concentration of C2H4C12 is increased _________.
Answers
Explanation:
Since this is an equilibrium problem, we apply le chatelier principle. This principle states that whenever a system at equilibrium is disturbed due to change in several factors, it would move in a way to annul such change.
C2H4(g) + Cl2 ⇔ 2C2H4Cl2(g)
When the concentration of C2H4 is increased, there is more reactant sin the system. In order to annul this change, the equilibrium position will shift to the right favoring product formation.
When the concentration of C2H4Cl2 is increased, there is more product in the system. To annul this change, the equilibrium position will shift to the left, favoring reactant formation.
who are the molecules that would hydrogen have an oxydation state of zero
Answers
Answer:
It does not have an overall charge, and is a neutral molecule. For free elements, the oxidation number is zero. Hence, the oxidation number of hydrogen in ${H_2}$ is zero as well. Some examples of free elements having zero oxidation state are: $Na,\,Fe,\,{O_2},\,{S_8}$ et cetera.
Explanation:
The specific heat values for 3 different substances are shown below. Which substance can absorb the most energy without changing temperature?The choices are:A.) it is impossible to tellB.) cadmiumC.) sodiumD.) iron
Answers
Explanation:
The change in temperature of a subtance can be calculate d using this formula:
Q = m * C * ΔT
ΔT = Q/(m * C)
Where ΔT is the temperature change, Q is the heat absorbed or released, m is the mass of the samle and C is the specifice heat.
We can suppose that we have three samples with the same mass but different substances. We ha.e 1 gram of each substance and their specific heats are:
m = 1 g
C1 = 1 J/(g°C) C2 = 10 J/(g°C) C3 = 100 J/(g°C)
These samples will absorb 1 J of energy and we can calculate the temperature chanee for each substance:
Q = 1 J
Sample 1:
ΔT1 = Q/(m * C1)
ΔT1 = 1 J/(1 g *
Answer:
Determine the amount of heat (in kJ) associated with the production of 5.71 × 104 g of ammonia according to the following equation. N2(g) + 3H2(g) 2NH3ΔH°rxn = −92.6 kJ Assume that the reaction takes place under standard-state conditions at 25°C.
Answers
Answer:
\(Q=-3.11x10^5kJ\)
Explanation:
Hello,
In this case, for the given reaction, we are given the standard enthalpy of reaction per mole of ammonia that is -92.6 kJ, it means, that forming one mole of ammonia will release 92.6 kJ of energy. In such a way, for the formation of 5.71x10⁴ g of ammonia, the following amount of heat will be released:
\(Q=5.71x10^4gNH_3*\frac{1molNH_3}{17gNH_3}*-92.6\frac{kJ}{molNH_3}\\ \\Q=-3.11x10^5kJ\)
Best regards.
The amount of the heat associated with the production of 5.71×10⁴ g of ammonia, NH₃ is –311026.732 KJ
We'll begin by calculating the number of mole in 5.71×10⁴ g of NH₃
Mass of NH₃ = 5.71×10⁴ g
Molar mass of NH₃ = 14 + (3×1) = 17 g/mol
Mole of NH₃ =?Mole = mass / molar mass
Mole of NH₃ = 5.71×10⁴ / 17
Mole of NH₃ = 3358.82 moles Finally, we shall determine the heat required to produce 3358.82 moles (i.e 5.71×10⁴ g) of NH₃. This can be obtained as follow:N₂(g) + 3H₂(g) —> 2NH₃(g) ΔH°rxn = −92.6 kJ
Since reaction took place at standard conditions, it means:
1 moles of NH₃ required −92.6 kJ
Therefore,
3358.82 moles of NH₃ will require = 3358.82 × –92.6 = –311026.732 KJ
Thus, the amount of the heat associated with the production of 5.71×10⁴ g of ammonia, NH₃ is –311026.732 KJ
Learn more: https://brainly.com/question/17332795
Paul Cezanne's Still Life with Apples in a Bowl (1879-83) represents a break with the tradition of using ____in art.
value
modeled forms
local color
linear perspective
Answers
Linear perspective is a technique used in traditional art to create the illusion of depth and three-dimensional space on a two-dimensional surface. It involves using converging lines and vanishing points to create the illusion of depth and space.
In Cezanne's painting, however, he breaks away from the traditional use of linear perspective and instead emphasizes the flatness of the picture plane. He uses overlapping shapes and changes in color and value to create the illusion of depth, rather than relying on linear perspective. This approach to art is considered a significant break from the traditional use of linear perspective and marks the beginning of modern art.
2. In a chemistry experiment, 10 g of urea NH2CONH2 (s) is dissolved in 150 ml of water in a simple calorimeter. A
temperature decrease of 3.7°C is measured. Calculate the molar enthalpy of solution for urea.
Answers
Answer:In a chemistry experiment, 10g of urea, NH2CONH2 (s), is dissolved in 150 mL of water in a simple calorimeter. A temperature decrease of 3.7oC is measured. Calculate the molar enthalpy of solution (∆Hs). ... an ideal gas B if 0.622 g sample of gas B occupies a volume of 300 mL at 35 °C and 1.038 atm.
Explanation:
What is mineral deficiency linked to
Answers
Answer:
Mineral deficiencies can lead to a variety of health problems, such as weak bones, fatigue, or a decreased immune system.
Explanation:
There are five main categories of mineral deficiency: calcium, iron, magnesium, potassium, and zinc.
One major cause of mineral deficiency is simply not getting enough essential minerals from food or supplements.
Answer:
it can lead to a variety of health problems, such as weak bones, or a decreased immune system.
Explanation:
PLS HELP ME WITH THIS ILL GIVE BRAINLIEST
Answers
Answer:
1 qualiative physical
2 qualiative chemical
3 quantitative physcial
4 quantiative chemical
5qualiative physcial
6quatiative chemcial
7quanatiative physcial
8 qualiative chemical
9quatliate physcial
- Lock the volume at 800L. ncrease.
the temperature to around 385K.
What is the Current Pressure?
Answers
Answer: Standard temperature and pressure (STP) refers to the nominal conditions in the atmosphere at sea level. These conditions are 0 degrees Celsius and 1 atmosphere (atm) of pressure. The STP value is important to physicists, chemists, engineers, pilots and navigators, among others.
A sample of gas at 2815 torr is cooled from 150.0 C to 100.0 C. Assuming the volume is constant what is the pressure in atm of the gas at 100.0 C
Answers
A sample of gas at 2815 torr is cooled from 150.0 C to 100.0 C. Assuming the volume is constant, 2482.2torr is the pressure in atm of the gas at 100.0 C.
The force delivered perpendicularly to an object's surface per unit area across how that force is dispersed is known as pressure (symbol: p / P). The pressure in relation to the surrounding air pressure is known as gauge pressure, also spelt gauge pressure.
Pressure is expressed using a variety of units. Some of these are calculated by dividing a unit of force by a unit of area; for instance, the metric system's unit of pressure, a pascal (Pa), is equal to one newton / square metre (N/m2).
P₁/T₁=P₂/T₂
2815 ×373/423=2482.2torr
To know more about pressure, here:
https://brainly.com/question/12971272
#SPJ1
At constant current is passed through an electrolytic cell containing molten MgCl2 for 18 hr. if 4.8 x 105 g of Cl2
are obtained. Calculate the current in Amperes.
Answers
The current passing through the electrolytic cell is approximately 2.02 x 10^4 Amperes.
To calculate the current in amperes, we need to use Faraday's laws of electrolysis and the stoichiometry of the reaction.
Faraday's laws state that the amount of substance produced or consumed during electrolysis is directly proportional to the quantity of electricity passed through the cell. The relationship is given by:
Q = nF
Where Q is the electric charge in coulombs (C), n is the number of moles of substance involved in the reaction, and F is Faraday's constant, which is equal to 96,485 C/mol.
In this case, the substance being produced is Cl2, and we know the mass of Cl2 produced, which is 4.8 x 10^5 g.
First, we need to calculate the number of moles of Cl2 produced:
Molar mass of Cl2 = 35.45 g/mol
Moles of Cl2 = mass / molar mass = (4.8 x 10^5 g) / (35.45 g/mol) ≈ 1.354 x 10^4 mol
Now we can calculate the quantity of electricity passed through the cell using Faraday's laws:
Q = nF
Q = (\(1.354 x 10^4\)mol) * (96,485 C/mol)
Q ≈ 1.308 x 10^9 C
The quantity of electricity is given in coulombs. To find the current, we need to divide this value by the time in seconds.
Given that the time is 18 hours, we convert it to seconds:
Time = 18 hours * 60 minutes/hour * 60 seconds/minute
Time = 6.48 x 10^4 seconds
Finally, we can calculate the current:
Current (I) = Q / Time
I = (1.308 x 10^9 C) / (6.48 x 10^4 s)
I ≈ 2.02 x 10^4 Amperes
Therefore, the current passing through the electrolytic cell is approximately 2.02 x 10^4 Amperes.
for more such question on electrolytic visit
https://brainly.com/question/17089766
#SPJ8
reddit mcat In a titration, 27.4 mL of a 0.0154 M solution of Ba(OH)2 is needed to neutralize 20.0 mL of HCl. What was the concentration of the acid solution
Answers
Answer:
0.422 M
Explanation:
Equation of the reaction,
2HCl(aq) + Ba(OH)₂(aq) ⇒ BaCl₂(aq)+2H₂O(l)
From the recation above,
2 moles of HCl is needed to neutralize 1 mole of Ba(OH)₂.
Using,
C'V'/CV = a/b......................... Equation 1
Where C' = concentration of acid, C = concentration of base, V' = volume of acid, V = volume of base, a = number of moles of acid, b = number of moles of base.
make C' the subject of the equation.
C' = aCV/bV'................. Equation 2
a = 2 mole, b = 1 mole, C = 0.0154 M, V = 27.4 mL, V' = 20 mL
Substitute into equation 2
C' = (2×0.0154×27.4)/(1×20)
C' = 0.422 M.
Hence the concentration of acid is 0.422 M
Calculate the molecular mass of sulphur if 35.5 g of sulphur dissolves in 100.0 g of CS2 to produce a solution that has a boiling point of 49.48°C.
Answers
How can you increase the gravitational potential energy (GPE) of an empty shoe box on the bottom shelf of a bookcase?
A. all of the options listed here will increase the GPE
B. add items to the box and raise it to a higher shelf
C. add items to the box to increase its mass
D. raise the box to a higher shelf
We can calculate the about of potential energy in an object using the formula PE = mgh where m is the mass of the object, g is the acceleration due to gravity (which on Earth is a constant 9.8) and h is the height the object is from ground. If I have a 2kg bar of gold and raise that to a shelf mounted 3 meters from the ground what is that objects GPE? Remember to insert the numbers into the formula like this PE = (2)B. (9.8) (3) , you may use your calculator to complete this multiplication problem.
A. 14.8 J
B. 88.2 J
C. 58.8 J
D. 176.4 J
Which is an example of only potential energy
A. a skateboard rolling down a hill.
B. a puppy sleeping on the ground under a tree.
C. an elevator moving up to the 3rd floor.
D. an apple step on top of the teacher’s desk.
If Kinetic energy has the shorted name of energy of motion, what is the shortened name for Potential Energy?
A. Stored energy
B. Joules
C. Newtons
D. Awkward energy
Potential energy can be converted into kinetic energy, a good example of this is when a pole-vaulter bends the pole during a leap. When the pole is bent the most, does it store elastic or gravitational potential energy?
A. Only gravitational potential energy because that is more powerful than elastic potential energy.
B. The pole stores gravitational potential energy because it is bent from its natural shape when off the ground.
C. The pole stores elastic potential energy when the pole is bent because its shape is change from its natural shape and it will want to go back to its original form, just like a spring or stretched elastic material.
D. It has neither elastic or gravitational potential energy.
Is the potential energy of the roller coaster elastic or gravitational?
A. neither
B. gravitational
C. elastic
D. both
In the EXPLORE section of your lesson 4.08 on Potential energy there were several animations to watch that provided a graphic illustrating how the PE and KE in a system changed as skateboarder rides a pipeline or a pendulum moves, why did the bar for the total energy remain constant?
A. Energy is converted from kinetic to potential and potential to kinetic, but the total amount of energy is conserved.
B. Because these models do not take into account the impact of friction and air resistance and are helping to solidify the concept of energy conservation and that the total mechanical energy remains constant in that model.
C. This is because no energy is being created or destroyed in this system.
D. all answers given are correct
In class we learned that a car model with a mass of 5.0 kg that is placed on a track 3.0 m off the ground and is traveling at a speed of 4 m/s. Has a measurable kinetic and potential energy. Calculate the total mechanical energy of the object using the formula ME = KE + PE when the KE is 40 joules and the PE is 147 joules. (You may use your calculator on this addition problem.)
A. 60 J
B. 147 J
C. 40 J
D. 187 J
Answers
Answer:someone answer 4 b
Explanation:
123
What is the frequency of a photon that has 3.82 x 10^-20 J of energy?
Answers
Answer:
5.73498*10^13
Explanation:
............
How many moles of aluminum ions al3+ are present in 0.42 mol of al2so43
Answers
There are 0.84 moles of aluminum ions (Al3+) present in 0.42 mol of Al2(SO4)3.
To determine the number of moles of aluminum ions (Al3+) present in 0.42 mol of Al2(SO4)3, we need to consider the stoichiometry of the compound.
The formula of aluminum sulfate (Al2(SO4)3) indicates that for every 1 mole of the compound, there are 2 moles of aluminum ions (Al3+). This means that the mole ratio of Al3+ to Al2(SO4)3 is 2:1.
Given that we have 0.42 mol of Al2(SO4)3, we can calculate the moles of Al3+ as follows:
Moles of Al3+ = 0.42 mol Al2(SO4)3 x (2 mol Al3+ / 1 mol Al2(SO4)3)
Moles of Al3+ = 0.42 mol Al2(SO4)3 x 2
Moles of Al3+ = 0.84 mol Al3+
Therefore, there are 0.84 moles of aluminum ions (Al3+) present in 0.42 mol of Al2(SO4)3.
It's important to note that the stoichiometry of the compound determines the mole ratio between the different species involved in the chemical formula. In this case, the 2:1 ratio of Al3+ to Al2(SO4)3 allows us to determine the number of moles of Al3+ based on the given amount of Al2(SO4)3.
For more such question on aluminum visit:
https://brainly.com/question/30451292
#SPJ8
The nonbonding or van der Waals radius is half of the_______ internuclear distance when two_______ atoms collide. So, radii calculated from the van der Waals equation are nonbonding radii. According to the kinetic-molecular theory, ideal-gas particles undergo perfectly _______ collisions, in keeping with the definition of nonbonding radii.
Answers
Answer:
Half
Non-covalently bonded
Elastic collisions
Explanation:
When two atoms are close to each other and are not bonded to each other, the distance between them is the Van Der Waals radius of the compound.
When atoms of gases are not bonded together, they collide with each other in an elastic manner. Kinetic energy and linear momentum are conserved.
Cumulative Exam Active
41 42 43 144
The electron configuration of nitrogen (N) is
O 1s²2s²2p³
O 1s²2s²2p4
O 1s²2s²2p5
O 1s²2s²2p6
Answers
The answer is: The electronic configuration of Nitrogen is \(1s^22s^22p^3\).
Electronic configuration: The electronic configuration is defined as the distribution of electrons of an atom in the atomic or molecular orbitals and is written using the labels for the subshell.
How to decide which orbital is filled first?
The order in which electrons are filled in atomic orbitals as:(Shown in image)
Just follow the arrows to select the orbitals, s orbital can have 2 electrons, p can have 6 electrons, d can have 10 electrons and f can 14 electrons.The electronic configuration in which the outer shell is completely filled is known as noble-gas configuration as they are similar to electronic configurations of noble gases.Now, the given element is nitrogen (\(N\)). The atomic number of Nitrogen is 7. Thus, these 7 electrons are filled as-\(1s^22s^22p^3\)
Therefore, the electronic configuration of Nitrogen is \(1s^22s^22p^3\).To learn more about the electronic configuration, visit:
https://brainly.com/question/21977349
#SPJ4
Nitrogen's complete electron configuration is 12s2s22p3.
The shorthand electron configuration for noble gases is [He] 2s22p3. Nitrogen has an atomic number of 7. The nitrogen atoms' nucleus contain this many protons. An atom that is neutral has an equal number of protons and electrons. Thus, the ground state electron configuration will consist of 7 electrons in the suitable s and p orbitals (state of lowest energy). For nitrogen, the entire electron configuration is 1s22s22p. Scientists may easily express and explain how the electrons are organized around the nitrogen atom's nucleus by using the configuration notation for nitrogen (N). As a result, it is simpler to comprehend and forecast how atoms will cooperate to form chemical bonds.
Learn more about electronic configuration here-
https://brainly.com/question/11309892
#SPJ9
HELP!!!!!!!!!
Allison and Robert have a search warrant for a suspect’s home. They know that if they announce themselves at the suspect’s home, the suspect can quickly destroy evidence. What type of warrant should Allison and Robert request?
Normally, search and seizure rules require the
rule. This means that officers must wait a reasonable amount of time for the occupant to answer. However, based on the situation, Allison and Robert request a(n)
warrant, allowing them to enter the premises immediately.
Answers
Answer:
knock and announce rule, no-knock
Explanation:
Pleaseee I need help and it is urgent
Answers
Answer:
1)4180j
2)15000kj
Explanation:
\(1) E=100*(30-20)*4.18=4180j\\2)Q=.5*30*1000=15000kj\)
2.5 mol KCL in 1.0 L of solution
Answers
The molarity of the solution is 2.5 M
Stoichiometry
From the question, we are to determine the molarity of the solution
Using the formula,
\(Molarity = \frac{Number\ of\ moles}{Volume}\)
From the given information
Number of moles = 2.5 moles
Volume = 1.0 L
Then,
\(Molarity = \frac{2.5}{1.0}\)
Molarity = 2.5 M
Hence, the molarity of the solution is 2.5 M
Here is the complete question:
What is the molarity of 2.5 mol KCL in 1.0 L of solution
Learn more on Stoichiometry here: https://brainly.com/question/22595803
Please for the love of jesus help. );
Identify the molecule containing the least oxygen atoms.
A) 12.044 × 10^23 molecules of CO2.
B) 12 g of O3.
C) 0.1 mol of V2O5.
D) 10 mL of H2O.
