Answer : The net ionic equation will be,
\(H^{+}(aq)+OH^{-}(aq)\rightarrow H_2O(l)\)
Explanation :
In the net ionic equations, we are not include the spectator ions in the equations.
Spectator ions : The ions present on reactant and product side which do not participate in a reactions. The same ions present on both the sides.
The given balanced ionic equation will be,
\(HCl(aq)+NH_4OH(aq)\rightarrow NH_4Cl(aq)+H_2O(l)\)
The ionic equation in separated aqueous solution will be,
\(H^+(aq)+Cl^-(aq)+NH_4^+(aq)+OH^-(aq)\rightarrow H_2O(l)+NH_4^+(aq)+Cl^-(aq)\)
In this equation, \(NH_4^+\text{ and }Cl^-\) are the spectator ions.
By removing the spectator ions from the balanced ionic equation, we get the net ionic equation.
The net ionic equation will be,
\(H^{+}(aq)+OH^{-}(aq)\rightarrow H_2O(l)\)
How do you think the amount of a material affects its tendency to sink or float?
ASAP
Answer:
it dependes on the material
Explanation:
what is the material
Answer:
it doesnt
Explanation:
The amount of material does not reflect on its tendency to sink or float because that depends on density which is an intensive property.
what is the control variable in which cleans the teeth better baking soda or toothpaste.
Answer:
The control variable in a comparison of cleaning teeth with baking soda and toothpaste would be the toothbrush used, as it is the constant factor in both conditions. The toothbrush should remain the same in both experiments to ensure that any observed differences in cleaning effectiveness are due to the baking soda or toothpaste and not the toothbrush.
Broken pieces of what types of rock are deposited into layers and cemented together to form sedimentary rock?
Select one:
a. sedimentary
b. igneous
c. metamorphic
d. all of these
Answer:
hey mate your answer is
D ALL OF THESE
HOPE IT HELPS YOU
To make sedimentary rock, broken bits of sedimentary, igneous, and metamorphic rocks get deposited in layers and bonded together.
So, option d. is correct.
Define sedimentary rock.Sedimentary rocks are created by the accumulation and deposition of mineral and organic particles just at earth's surface, followed by cementation. The processes that enable these particles that settle in place are referred to as sedimentation.
To make sedimentary rock, broken bits of sedimentary, igneous, and metamorphic rocks get deposited in layers and bonded together.
So, option d. is correct.
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If you help ill give brainlest i need this done almost asap please
If an atom is highly reactive, a metal, and has one valence electron, what group/family does it belong to? (Name and number)
Answer:The answer is group 1 and alkali metals
Explanation:The elements in group one are alkali metals and have 1 valance electron
Chuck wants to know how many electrons in an atom are not paired up. Which model would be best for Chuck to
write out?
Answer:
D. an orbital notation of the atom
Explanation:
Orbital notiation uses lines and arrows to show shells, subshells, and orbitals for electrons in an atom. Since it shows arrows being paired up in this diagram it would be the best model for Chuck to use.
why do molecules change speed
Answer:
Molecules change speed based on temperature and state of matter. The warmer they are, the faster they move and vice versa. Solids are at a lower temperature than gases and liquids, which means the molecules are moving slower, and hold together better, also explaining why solids aren't malleable.
The particles gather kinetic energy and accelerate as the temperature rises.
What is kinetic energy?Kinetic energy is defined as an object is the energy it has since it is in motion. It is explained as the amount of effort required to move a mass-based body from rest to the indicated velocity. The body keeps its kinetic energy, which it acquired during acceleration, unless its speed changes.
The actual average speed of the particles is influenced by both their mass and temperature; at a given temperature, larger particles travel more slowly than lighter ones. Temperature and the physical state of the materials affect the speed of molecules. They move more quickly in warmer temperatures and vice versa. Since solids have lower temperatures than gases and liquids, their molecules move more slowly and adhere to one another more tightly, which also explains why solids aren't bendable.
Thus, the particles gather kinetic energy and accelerate as the temperature rises.
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True or false
Chemical reactions are always dangerous
How many moles are in 55g of NH3(g)?
Answer:
1 grams NH3 is equal to 0.058718113128665 mole. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between grams NH3 and mole.
Explanation:
Please answer the following question using the data below: H2O vapor content: 13 grams H2O vapor capacity: 52 grams at 25 degrees Celsius 13 grams at 10 ∘
C 52 grams at 30 ∘
C What is the dew point for the conditions listed above? LCL 3π5 25C Relative Humidity =100%
Given data:H2O vapor content: 13 gramsH2O vapor capacity: 52 grams at 25 degrees Celsius 13 grams at 10∘C52 grams at 30∘CFormula used to find the dew point:$$\dfrac{13}{52}=\dfrac{(A*3\pi)/(ln100)}{(17.27-A)}$$$$\frac{1}{4}=\dfrac{(A*3\pi)/(ln100)}{(17.27-A)}$$
Where A is the constantDew Point:It is the temperature at which air becomes saturated with water vapor when the temperature drops to a point where dew, frost or ice forms. To solve this question, substitute the given data into the formula.$$13/52=\dfrac{(A*3\pi)/(ln100)}{(17.27-A)}$$$$13(17.27-A)=3\pi A(ln100)$$By simplifying the above expression, we get$$A^2-17.27A+64.78=0$$Using the quadratic formula, we get$$A=9.9,7.4$$
The dew point is 7.4 since it is less than 10°C.More than 100:The term "More than 100" has not been used in the question provided.
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calculate the ph during the titration of 22.84 ml of 0.26 m hno3(aq) with 0.10 m naoh after 11.72 ml of the base have been added.
What could be done to change this carbide ion to a neutral carbon atom? A) remove 2 electrons B) add 2 electrons C) remove 4 electrons D) add 4 electrons
Answer:remove 4 electrons
Explanation:
I took the test just a minute a go
If amino acids could be produced by random chemical processes: They would probably be all L stereoisomers. They would probably be all D stereoisomers. They would probably be equal L and D stereoisomers
Answer:
They would probably be equal L and D stereoisomers
Explanation:
All amino acid (except glycine) can occur in two isomeric forms called L- and D- forms, because of the possibility of forming two different enantiomers around the central carbon atom known as the chiral center. The two enantiomers, have identical physical and chemical properties, but their interactions with other chiral molecules may vary.
A carbon chiral center occcurs when the carbon is bonded to four different substituents. Glycine, has no enantiomers because it has two hydrogen atoms attached to the central carbon atom.
When a compounds with chiral centers are synthesized in the laboratory randomly (in the absence of a directing template) left and right-handed molecules ( corresponding to L- and D- forms) of a compound will form in equal amounts known as a racemic mixture. This was the case when Louis Pasteur in 1848, investigated the crystalline sediment that accumulated in wine casks called paratartaric acid or racemic acid, a form of tartaric acid.
what describes the process by which gas goes directly to a solid phase
A sublimation
b solidification
c vaporization
d deposition
Deposition is when a gas transitions directly to the solid phase without passing through the liquid phase D) Deposition.
During deposition, the gas molecules lose energy and come together to form a solid substance. This process is the reverse of sublimation, where a solid directly transitions to the gas phase without becoming a liquid.
Deposition refers to the process in which a substance changes directly from a gaseous state to a solid state without passing through the intermediate liquid phase. It is the reverse process of sublimation, where a solid transforms instantly into a gas.
During deposition, the gas molecules lose energy and come together to form a solid structure. This can occur when the temperature and pressure conditions favor the gas to bypass the liquid phase and directly convert it into a solid.
Examples of deposition can be seen in various natural phenomena, such as frost forming on a cold surface or the formation of snowflakes from water vapor in the atmosphere. In these cases, the water vapor bypasses the liquid phase and directly transforms into solid ice crystals through deposition. Therefore, the correct answer is D) Deposition.
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Water is boiling in a clear pot, as shown in the picture.
How do the water molecules closest to the burner compare to the water molecules closest to the surface of the liquid?
Answer:
How do the water molecules closest to the burner compare to the water molecules closest to the surface of the liquid? ... They are closer together and moving slower than those at the surface. They are more spread out and moving faster than those at the surface. The diagram shows the sun's interior.
Explanation:
Answer:
it's c if u don't want to read all that
Explanation:
100 cm³ of a gas at 27°C is cooled to 20°C at constant pressure .Calculate the volume of gas at 20°C.
According to Charle's law, the volume of the given mass of a gas is directly proportional to its absolute temperature provided that the pressure is constant. Mathemically;
\(\begin{gathered} V\alpha T \\ V=kT \\ k=\frac{V}{T} \\ k=\frac{V_1}{T_1}=\frac{V_2}{T_2} \end{gathered}\)where;
V1 and V2 are the initial and final volume of the gas
T1 and T2 are the initial and final temperatures of the gas (in Kelvin)
Given the following parameters:
\(\begin{gathered} V_1=100\operatorname{cm}^3 \\ T_1=27^0C=27+273=300K \\ T_2=20^0C=20+273=293K \\ V_2=\text{?} \end{gathered}\)Substitute the given parameters into the formula;
\(\begin{gathered} V_2=\frac{V_1T_2}{T_1}^{} \\ V_2=\frac{100\times293}{300} \\ V_2=\frac{29300}{300} \\ V_2=\frac{293}{3} \\ V_2=97.67\operatorname{cm}^3 \end{gathered}\)Therefore the volume of the gas at 20°C is approximately 97.67cm³
Imagine the periodic table includes the element Imaginium (Im) that has atomic number 125 and several radioactive isotopes, including one with atomic mass number 282 that decays by alpha decay. After a decay event, what will be the values of A and Z for what was formerly an atom of 282Im?
The atomic number (Z) of Iminium (Im) is 125, and since alpha decay results in the loss of 2 protons, Z will decrease by 2, giving a value of 123 for the newly formed element.
After a decay event by alpha decay, the Iminium (Im) atom with atomic number 125 (Z) and atomic mass number 282 (A) will change. Alpha decay involves the loss of 2 protons and 2 neutrons from the nucleus. Therefore, the new values for A and Z will be:
- New atomic number (Z) = 125 - 2 = 123
- New atomic mass number (A) = 282 - 4 = 278
So, the atom that was formerly 282Im will now have an atomic number (Z) of 123 and an atomic mass number (A) of 278.
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2.
What did five different witnesses see in the area where Mary Lou Arruda
disappeared?
A. Mary Lou talking to an unknown man.
B. A green car driven by an unknown man.
C. Mary Lou's bicycle in the trunk of a green car.
D. An unknown man on foot following Mary Lou .
Answer:
c
Explanation:
I believe its c but i could be wrong sorry if I am
what is a covalent bond? Apex
Answer:
Here is the meaning of covalent bond: covalent bond: a chemical bond in which two atoms share some of their valence electrons which creates a force that holds the atoms together
Hope this helps
Sky
A chemical bond in which two atoms share some of their valence electrons creates a force that holds the atoms together.
What is a covalent bond?A covalent bond consists of the mutual sharing of one or more pairs of electrons between two atoms.
Covalent bonds have high bond dissociation energy as compared to the ionic bond. The overlapping of molecular orbital is bigger in the case of the covalent bonds as compared with ionic bonds.
Hence, covalent bonds are difficult to break and stronger than ionic bonds.
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What does an atom's period tell us?
Select one:
a. Number of protons
b. Number of shells
c. Number of valence
electrons
d. Number of electron
what is the bond order for a second-period diatomic particle containing seven electrons in antibonding molecular orbitals and eight electrons in bonding molecular orbitals?
The Bond Order would be 0.5.
Bond order is the number of bonding pairs of electrons between two atoms. In a covalent bond between two atoms, a single bond has a bond order of one, a double bond has a bond order of two, a triple bond has a bond order of three, and so on.
Bond Order= \(\frac{Bonding E- Antibonding E}{2}\)
so ,
= \(\frac{8-7}{2}\)
= 0.5
As Bond Order is 0.5 so molecule would be very reactive as bond is pretty weak.
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what ph value should the nurse expect when confirming placement of the nasogastric tube using the ph method? what ph value should the nurse expect for respiratory or small intestine secretions?
The value that the nurse must obtain from the stomach is a pH of 5.
A nasogastric tube is a medical device that is inserted through the patient's nose into the stomach to introduce food and medicine directly.
To know that the probe is placed in the desired position (in the stomach) a pH dating method is used.
In this method, the location of the probe is verified by absorbing mucus and checking its pH. Depending on the location, both the pH and the color of the mucus will be different. For example:
Stomach mucus should have a pH of 1 to 5Mucus in the airways has a pH of 6Mucus in the small intestine has a pH of 6 or higherThis dating is used to avoid sending food or medicine to the wrong place in the body, which could put the patient's life at risk.
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When k–1 > k2 (that is, when the rate constant for dissociation of the enzyme substrate complex is greater than the rate constant for conversion to product), the KM is most analogous to
1) the Kd
2) the Ka
3) the Kcat
4) the 1/Kcat
When k1 > k2, the KM is most analogous to the Kd. This is because KM is the concentration of substrate at which the reaction rate is half of its maximum velocity, and Kd is the dissociation constant, which is the concentration of ligand at which half of the receptor binding sites are occupied.
In both cases, they represent the affinity of the enzyme or receptor for the substrate or ligand, respectively. The Ka is the association constant, which is the inverse of Kd, and is not directly related to KM. The Kcat is the turnover number, which represents the maximum number of substrate molecules converted to product per unit time by a single enzyme molecule when it is saturated with substrate, and 1/Kcat is the catalytic efficiency, which is not directly related to KM either.
When k-1 > k2 (the rate constant for dissociation of the enzyme-substrate complex is greater than the rate constant for conversion to product), the KM is most analogous to: 1) the Kd
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types of radioactive nuclide
Answer:
On Earth, naturally occurring radionuclides fall into three categories: primordial radionuclides, secondary radionuclides, and cosmogenic radionuclides. Radionuclides are produced in stellar nucleosynthesis and supernova explosions along with stable nuclides.
As stated in the article, “As Sticky as a Gecko . . . but Ten Times Stronger!,” the adhesive the researchers developed sticks best when it is pulled down parallel to the surface. What type of adhesion is this called?
The answer is Shear Adhesion, i just took the test on 21 edge.
Answer:
shear adhesion
Explanation:
edge
Shear adhesion sticks best when it is pulled down parallel to the surface.
What is shear adhesion?Shear adhesion is defined as the ability of tape due to which it resists the static forces which are applied in same plane as in backing.It is usually expressed in terms of time required by a given weight for an amount of tape to become loose from a vertical plane.
Molecular weight between two entanglements is the controlling factor of shear adhesion. Shear adhesion is affected by the following parameters which areas follows:
1)Tg of adhesive - Shear adhesion increases as Tg rises up to a certain temperature which is less than the room temperature.
2) Tan delta minimum value of adhesive- It is found that shear adhesion improves by an increase in tan delta minimum value.
3)Adhesive polarity- It is an important factor which affects adhesion such as tack,peel and shear.Adhesion performances are improved by introducing polar ingredients in the formulation.
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a 1) How would you make 1 liter of a 10% NaCl solution from a solid stock? Provide details of what kind of containers you would use.
To make 1 liter of a 10% NaCl solution from a solid stock, you will require the following materials and containers.MaterialsSolid NaClDistilled water1-Liter volumetric flask250-mL volumetric flask 2-beakersProcedureTo prepare 1 liter of a 10% NaCl solution, the following procedure should be followed:Measure out 100g of NaCl using a balance.
Measure the weight of an empty 250-mL volumetric flask.Add the NaCl to a 250-mL beaker and add a small amount of distilled water to it to dissolve the NaCl.Carefully pour the dissolved NaCl solution into the 250-mL volumetric flask. Add distilled water to the mark on the flask to make up the volume. Stopper the flask and invert it several times to mix the solution.Measure the weight of the 1-Liter volumetric flask.Add the 250-mL volumetric flask solution to a 1-Liter volumetric flask.Add distilled water to the mark on the flask to make up the volume.
Stopper the flask and invert it several times to mix the solution.The final volume of the solution will be 1 liter of a 10% NaCl solution.PrecautionsEnsure the NaCl has completely dissolved before adding more water to avoid making a less concentrated solution.Measure the weight of the volumetric flask before and after adding the solution to calculate the volume of solution that was added.Use distilled water to prepare the solution.
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if atom x undergoes radioactive decay and becomes atom y with a half-life of five minutes. after 10 minutes, all number of x atoms have completely turned into to y atoms.
T/F
True. The fact that atom X undergoes radioactive decay means that it is an unstable atom that will eventually decay into a more stable form, which in this case is atom Y.
The half-life of atom Y is five minutes, which means that it takes five minutes for half of the original amount of atom Y to decay into another substance.
After ten minutes, which is two half-lives of atom Y, all the original number of atom X would have completely turned into atom Y because the first half-life would have transformed half of the atom X into atom Y, and the second half-life would have transformed the remaining half into atom Y. Therefore, the statement is true.
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Engineering Question 15 of 30 Which of the following devices is used for atomizing and vaporizing the fuel before mixing it with air in varying proportions? O Spark plug O Carburetor O Flywheel Govern
The primary goal of the carburetor is to atomize and vaporize the fuel before mixing it with air in varying proportions, making it the device that is used for atomizing and vaporizing the fuel before mixing it with air in varying proportions.
The device that is used for atomizing and vaporizing the fuel before mixing it with air in varying proportions is Carburetor. A carburetor is a device that blends air and fuel for an internal combustion engine. It is often located on the top of an engine on a direct engine-to-carburetor link, and it controls how much air and fuel are mixed.The carburetor must also supply the engine with a spark plug to ignite the fuel/air mixture in each cylinder.
The carburetor must provide a fuel/air mixture that is consistent with the engine's changing demands, which vary with engine speed, load, and temperature. A carburetor is responsible for enriching the fuel/air mixture when the engine is cold and for leaning the mixture as the engine warms up. As well, it is also responsible for regulating the fuel/air mixture at part-throttle levels, where the engine spends most of its time when driving.
When an engine is running at full throttle, it is operating at wide-open throttle (WOT), and the carburetor provides the richest fuel/air mixture possible.The carburetor, like most engine systems, is a complex and sensitive device that must be correctly tuned to perform properly. The primary goal of the carburetor is to atomize and vaporize the fuel before mixing it with air in varying proportions, making it the device that is used for atomizing and vaporizing the fuel before mixing it with air in varying proportions.
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Balancing equations
1. __Na + __Oz -> __Na2O
Answer:
Balancing equations
1
\(4Na + O_{2} -> 2Na_{2}O\)
2. what is the concentration of a solution of fe(no3)3 if 80 ml of a 3.0 m fe(no3)3 solution is diluted to a total volume of 1500 ml?
Answer:To calculate the concentration of the Fe(NO3)3 solution after dilution, we can use the formula:
Explanation:
C1V1 = C2V2
C1 = Initial concentration of the solution
V1 = Initial volume of the solution
C2 = Final concentration of the solution
V2 = Final volume of the solution
Initial concentration (C1) = 3.0 M
Initial volume (V1) = 80 mL
Final volume (V2) = 1500 mL
Using the formula, we can solve for C2:
C1V1 = C2V2
(3.0 M)(80 mL) = C2(1500 mL)
Rearranging the equation to solve for C2:
C2 = (C1V1) / V2
C2 = (3.0 M)(80 mL) / 1500 mL
C2 ≈ 0.16 M
Therefore, the concentration of the Fe(NO3)3 solution after dilution is approximately 0.16 M.
we have an initial solution of Fe(NO3)3 with a concentration of 3.0 M and a volume of 80 mL. The goal is to dilute this solution to a final volume of 1500 mL and determine the concentration of the diluted solution.
To do this, we can use the dilution formula: C1V1 = C2V2, where C1 and V1 represent the initial concentration and volume, and C2 and V2 represent the final concentration and volume.
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Potassium metal reacts with chlorine gas to form solid potassium chloride. Answer the following:
Write a balanced chemical equation (include states of matter)
Classify the type of reaction as combination, decomposition, single replacement, double replacement, or combustion
If you initially started with 78 g of potassium and 71 grams of chlorine then determine the mass of potassium chloride produced.
The reaction between pottasium metal and chlorine gas is a combination reaction and it is as follows;
2K + Cl₂ → 2KCl
What is a chemical reaction?A chemical reaction is a process involving the breaking or making of interatomic bonds, in which one or more substances are changed into others.
A chemical reaction is said to be a combination reaction when two or more atoms are joined together to form a compound. An example is the reaction of pottasium metal and chlorine gas to produce pottasium chloride as follows:
2K + Cl₂ → 2KCl
In the above equation, two elements; pottasium chemically combines with chlorine to form a compound; pottasium chloride.
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