Final answer:
The oxidation state of the phosphorus in PO³₃⁻ is +3, which is determined by considering the oxidation state of oxygen (-2) and the total charge of the ion (3-).
Explanation:
The oxidation state of an individual phosphorus atom in PO³₃⁻ can be determined by using the known oxidation states of oxygen and the overall charge of the ion. Oxygen generally has an oxidation state of -2, and since there are three oxygen atoms, their total contribution is -6. Considering the overall charge of the ion is 3-, we can set up an equation to solve for the oxidation state of phosphorus (x):
3(-2) + x = -3
-6 + x = -3
x = -3 + 6
x = +3
So, the oxidation state of the phosphorus atom in PO₃³⁻ is +3.
why the process of heating hydrate compound should be started slowly first
Answer:
Fast heating up causes the water to spit out (decrepitation)
Explanation:
Hello,
Fast heating up causes the water to spit out (decrepitation), this implies that the drops containing portions of the salt could get lost and subsequently the yield is dwindled. So a graduated heating up must be ejected.
Best regards.
The hydrate compound should be heated slowly to facilitate the controlled release of water and prevent spattering and the formation of steam pockets, ensuring safety and accurate measurements. This is particularly important in exothermic processes, such as those involving sodium acetate in heat packs or the dissolution of sodium hydroxide.
Explanation:The process of slowly heating hydrate compounds is necessary to prevent rapid water loss, which can cause the compound to spatter and possibly result in an inaccurate measurement of the remaining anhydrous salt. This heating process, when done slowly, ensures a controlled release of water, and prevents the formation of steam pockets that might otherwise disrupt the sample and pose a safety risk.
In the context of a substance like sodium acetate (NaC2H3O2), this substance can release heat in an exothermic process, such as when it transitions from aqueous to solid form, which is utilized in heat pack applications where the solid dissolves upon reheating, allowing for reuse.
In exothermic dissolution experiences like with sodium hydroxide, the heat generated during the dissolution process must be managed carefully to avoid unsafe temperature elevations, indicating why a gradual approach to heating is critical for safety and accuracy in handling hydrates.
At the center of every atom lies a small, dense ____________ that is positively charged
HURRRRRRYYYYYYYYY 50PTS
At the center of every atom lies a small, dense nucleus that is positively charged.
The nucleus is made up of protons and neutrons. Protons have a positive charge, while neutrons have no charge.
The number of protons in the nucleus is equal to the atomic number of the atom. The atomic number is a unique number that identifies an element. For example, the atomic number of carbon is 6, which means that there are 6 protons in the nucleus of a carbon atom.
The number of neutrons in the nucleus can vary. For example, the most common form of carbon has 6 neutrons, but there are also forms of carbon with 7 neutrons and 8 neutrons.
The nucleus is held together by the strong nuclear force. The strong nuclear force is a very strong force that binds protons and neutrons together.
The nucleus is very small compared to the atom as a whole. The radius of the nucleus is about 10-15 meters, while the radius of the atom is about 10-10 meters.
The nucleus is important for the chemical properties of the atom. The number of protons in the nucleus determines the element of the atom, while the number of neutrons affects the isotopes of the element.
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Write a "word equation" to describe the chemical reaction that occurs when pineapple is mixed with the gelatin.
The word equation for the chemical reaction between pineapple and gelatin is 'Pineapple + Gelatin -> Gelatinized Pineapple'.
Explanation:The chemical reaction that occurs when pineapple is mixed with gelatin can be described by the following word equation:
Pineapple + Gelatin → Gelatinized Pineapple
In this reaction, the gelatin acts as a cross-linking agent and forms a gel with the pineapple juice. The gelatinization process involves the absorption of water by the gelatin molecules, causing them to swell and trap the pineapple juice. As a result, the mixture solidifies to form a gel-like consistency.
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How much water must be removed by steam distillation to recover this natural product from 3.0 g of a spice that contains 10% of the desired substance?
How are these equilibrium quantities affected by the initial amount of x(g) placed in the container? assume constant temperature?
Equilibrium quantities of Y and Z are directly affected by initial amount of X placed in container.
Further Explanation:
Le Chatelier’s principle:
According to this principle, if changes are done in pressure, temperature or concentration in any equilibrium reaction, equilibrium shifts to that direction in which effect of altered value is reversed.
Given reaction occurs as follows:
[tex]\text{2X(g)}\rightleftharpoons\text{Y(g)}+\text{Z(g)}[/tex]
From this reaction, it is evident that two moles of X decompose to produce one mole of Y and one mole of Z.
If amount of X used is large, it results in more formation of Y and Z and vice-versa. This implies amount of product formation depends on initial amount of X taken in reaction.
According to Le Chatelier's principle, if amount of X is increased, equilibrium will tend to shift in that direction in which more consumption of X is observed. This is done only if more products are formed. Opposite effects are observed in case less amount of X is taken. Hence formation of Y and Z is dependent on initial amount of X.
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Answer details:
Grade: Senior School
Subject: Chemistry
Chapter: Chemical Equilibrium
Keywords: Le Chatelier’s principle, equilibrium, shift, direction, X, Y, Z, 2X, pressure, temperature, concentration, consumption, increase, decrease, two moles, one mole.
What commercially available compound is used to generate cl2?
Hello!
The commercially available compound that is used to generate Cl₂ is Sodium Hypochlorite
Why?Sodium Hypochlorite is present in commercial bleach. Its chemical formula is NaClO.
Sodium Hypochlorite can react with acids (which can be present in vinegar, glass and window cleaners, drain cleaners or lime, calcium and rust removal products) to form Chlorine gas as shown by the following reaction (for a generic acid HA)
NaClO(aq) + HA(aq) → H₂O(aq) + Cl₂(g) + NaA(aq)
Chlorine gas is very toxic, so bleach should never be mixed with anything but water.
Have a nice day!
A spherical balloon contains a positively charged object at its center. as the balloon is inflated to a greater volume while the charged object remains at the center, what does the electric potential at the surface of the balloon do?
Final answer:
As a spherical balloon is inflated with a fixed charge at its center, the electric potential at the surface decreases due to the increase in the balloon's radius.
Explanation:
When a spherical balloon with a positively charged object at its center is inflated, the electric potential at the surface of the balloon changes. As the radius of the balloon increases, the electric potential at the surface (V) is defined by the formula V = kQ/r, where k is Coulomb's constant, Q is the charge at the center, and r is the radius of the surface. Therefore, as the balloon's radius expands and r gets larger, the electric potential at the surface decreases because the charge Q remains constant while the distance r increases.
Why should you not heat organic solvents over a bunsen burner flame?
A sealed container filled with argon gas at 35°C has a pressure of 832 torr. If the volume of the container is decreased by a factor of two, what will happen to the pressure? You may assume the temperature remains at 35°C.
According to Boyle's Law, if the volume of a container filled with gas is halved, keeping temperature constant, the pressure of the gas in the container will double.
Explanation:The science subject in question here relates to the principles of gas laws, specifically Boyle's Law, which falls under the category of physics or chemistry. Highlighting Boyle's law, which states that the pressure of a gas is inversely proportional to its volume provided the temperature remains constant. Hence, if the volume of the sealed container filled with argon gas is reduced by a factor of two, the pressure should be expected to double, given that the temperature remains constant at 35°C.
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How many moles of Cl- ions are needed to completely combine with 0.25 moles of Mg+2 ions
An electrical shock happens when electric ________enters the body at one point and leaves through another.
Answer: The correct answer is "current".
Explanation:
The electric shock happens when the circuit is complete with respect to ground. In this case, the electric current enters from one point through the conductor and exits from the another point.
In case of bird sitting on the electrical wire of the electric pole, it does not get electric shock as the circuit is not complete with respect to the ground. That is why the electric current does not flow through its body.
Therefore, an electrical shock happens when electric current enters the body at one point and leaves through another.
An electrical shock happens when electric [tex]\boxed{\text{current}}[/tex] enters the body at one point and leaves through another.
Further Explanation:
The rate of flow of electric charges is known as electric current. It is generally represented by I. It passes through the substances that carry current carriers in them. The electrons are said to be the current carriers. Electrons are the negatively charged subatomic particles which along with the atomic nucleus comprise the atom. The SI unit of electric current is Ampere or Coulomb per second. One Ampere is defined as the rate of flow of one-coulomb charge in unit time. The instrument used to measure electric current is called ammeter.
The formula to calculate the electric current is as follows:
[tex]{\text{I}} = \dfrac{{\text{Q}}}{{\text{t}}}[/tex]
Here,
I is the electric current.
Q is the amount of charge in Coulomb.
t is the time in seconds.
Conductors are the substances that permit electric current to flow through them. Metals are good conductors of heat and electricity as these have free charge carriers that move randomly and produce current. Insulators are the substances that cannot pass an electric current through them. Non-metals are bad conductors or insulators.
When an electric current passes through the human body, an electric shock is felt. It can results in skin burns, numbness, breathing problems, headache and muscle spasms. The severity of electric shock depends on the amount of electric current, time to which the body is subjected to current and the path of current through the body.
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Answer Details:
Grade: Middle School
Chapter: Electric current
Subject: Chemistry
Keywords: electric current, electric shock, electrons, charge carriers, ampere, coulomb, time, I, Q, t, conductors, metals, insulators, non-metals.
An experiment is performed on a puck on a level air hockey table, where friction is negligible. a constant horizontal force is applied to the puck, and the puck's acceleration is measured. now the same puck is transported far into outer space, where both friction and gravity are negligible. the same constant force is applied to the puck (through a spring scale that stretches the same amount), and the puck's acceleration (relative to the distant stars) is measured. what is the puck's acceleration in outer space?
Calculate the molarity of na+ ions in 135 ml of a solution containing 5.32 g nacl and 1.20 g na2so4.
Final answer:
The molarity of Na+ ions in a solution containing 5.32 g NaCl and 1.20 g Na2SO4 in 135 mL is 0.8 M. This calculation involves converting the mass of each salt to moles of Na+ ions and then dividing the total moles by the volume of the solution in liters.
After solving , Molarity of Na+ = 0.108 mol Na+ / 0.135 L = 0.8 M
Explanation:
To calculate the molarity of Na+ ions in the solution, we need to determine the total moles of Na+ ions provided by both NaCl and Na2SO4. First, we will convert the masses of NaCl and Na2SO4 to moles using their molar masses (NaCl = 58.44 g/mol and Na2SO4 = 142.04 g/mol). Then we'll account for the fact that each mole of NaCl gives 1 mole of Na+ ions, and each mole of Na2SO4 gives 2 moles of Na+ ions.
NaCl:
5.32 g NaCl × (1 mol NaCl / 58.44 g NaCl) = 0.091 mol Na+
Na2SO4:
1.20 g Na2SO4 × (1 mol Na2SO4 / 142.04 g Na2SO4) × (2 mol Na+ / 1 mol Na2SO4) = 0.0169 mol Na+
Next, we sum the moles of Na+ ions from both compounds: 0.091 mol + 0.0169 mol = 0.108 mol Na+.
Finally, we convert the volume of the solution to liters and calculate the molarity of Na+ ions:
135 mL × (1 L / 1000 mL) = 0.135 L
Molarity of Na+ = Total moles of Na+ / Volume of solution in liters
Molarity of Na+ = 0.108 mol Na+ / 0.135 L = 0.8 M
The molarity of Na⁺ ions in a solution with 5.32 g of NaCl and 1.20 g of Na₂SO₄ in 135 mL is calculated to be approximately 0.800 M.
This involves determining the moles of each compound, the total number of Na⁺ ions, and then using the volume of the solution to find the molarity.
The final concentration of Na⁺ ions is calculated by dividing the total moles of Na⁺ by the volume in liters.
First, we need to determine the moles of both NaCl and Na₂SO₄:
1. Calculating moles of NaCl:
Molar mass of NaCl = 23.0 g/mol Na + 35.5 g/mol Cl = 58.5 g/molNumber of moles of NaCl = 5.32 g / 58.5 g/mol = 0.09094 moles2. Calculating moles of Na₂SO₄:
Molar mass of Na₂SO₄ = 2(23.0 g/mol Na) + 32.1 g/mol S + 4(16.0 g/mol O) = 142.1 g/molNumber of moles of Na₂SO₄ = 1.20 g / 142.1 g/mol = 0.00845 molesEach mole of NaCl provides 1 mole of Na⁺ ions, and each mole of Na₂SO₄ provides 2 moles of Na⁺ ions. Thus, we need to calculate the total moles of Na⁺:Moles of Na⁺ from NaCl = 0.09094 molesMoles of Na⁺ from Na₂SO₄ = 2 * 0.00845 moles = 0.01690 molesTotal moles of Na⁺ = 0.09094 moles + 0.01690 moles = 0.10784 moles3. Calculating the molarity of Na⁺:
Convert the volume of solution from mL to L: 135 mL = 0.135 LMolarity of Na⁺ = Total moles of Na⁺ / Volume of solution in liters = 0.10784 moles / 0.135 L = 0.7996 MThe molarity of Na⁺ ions in the solution is approximately 0.800 M.
Correct question is: Calculate the molarity of Na⁺ ions in 135 ml of a solution containing 5.32 g NaCl and 1.20 g Na₂SO₄ .
A student placed 18.5 g of glucose (c6h12o6) in a volumetric flask, added enough water to dissolve the glucose by swirling, then carefully added additional water until the 100.-ml mark on the neck of the flask was reached. the flask was then shaken until the solution was uniform. a 45.0-ml sample of this glucose solution was diluted to 0.500 l. how many grams of glucose are in 100. ml of the final solution?
There is amount of 1.67 grams of glucose in 100 ml of the final solution.
To solve this problem, use the concept of dilution.
The number of moles of a solute remains constant when diluted,
[tex]\[M_1V_1 = M_2V_2\][/tex]
1. Initial concentration is the mass of glucose divided by the volume of the solution in the flask (100 ml):
[tex]\[M_1 = \frac{18.5 \, \text{g}}{100 \, \text{ml}} = 0.185 \, \text{g/ml}\][/tex]
2. Initial volume is 100 ml.
3. Final volume is 0.500 L
4. Now use the formula to find the final concentration
[tex]\[M_2 = \frac{M_1 \cdot V_1}{V_2} = \frac{0.185 \, \text{g/ml} \cdot 45.0 \, \text{ml}}{0.500 \, \text{L}}\][/tex]
= 0.0167 g/ml
This is the concentration of glucose in the diluted solution.
5. Finally, to find the mass of glucose in 100 ml of the final solution, multiply the concentration by the volume (100 ml):
[tex]\[ \text{Mass of glucose} = M_2 \cdot V_2 = 0.0167 \, \text{g/ml} \cdot 100 \, \text{ml}\][/tex]
[tex]\[ \text{Mass of glucose} \approx 1.67 \, \text{g}\][/tex]
So, there are 1.67 grams of glucose in 100 ml of the final solution.
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The mass of glucose in 100 mL of the final solution is 41.11 g.
Explanation:
To calculate the concentration of glucose in the final solution, we need to first find the concentration of the glucose solution.
Given:
We can use the formula for concentration:
Concentration (in g/L) = (mass of solute in grams) / (volume of solution in liters)
Substituting the given values:
Concentration of the glucose solution = 18.5 g / 0.045 L
= 411.11 g/L
Now, we can use the concentration of the glucose solution to find the mass of glucose in 100 mL of the final solution.
Given:
We can use the same formula for concentration:
Concentration (in g/L) = (mass of solute in grams) / (volume of solution in liters)
Substituting the given values:
Mass of glucose in 100 mL of the final solution = (Concentration of the glucose solution) * (Volume of the final solution in liters)
Mass of glucose in 100 mL of the final solution = 411.11 g/L * 0.100 L
= 41.11 g
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Put the steps in the homeostasis of potassium ions in order.
How many chlorine ions are required to bond with one aluminum ion
Three chlorine ions are needed to bond with one aluminum ion to form aluminum chloride (AlCl3), ensuring electrical neutrality.
Three chlorine ions are required to bond with one aluminum ion to form aluminum chloride (AlCl3). The aluminum ion has a +3 charge and each chlorine ion has a -1 charge. To achieve electrical neutrality in the compound, three chlorine ions are needed to balance the three positive charges of one aluminum ion, as depicted by the formula AlCl3. This stoichiometry is reflected in the chemical reaction where 2 Al (s) and 3 Cl2 (g) react to form 2 AlCl3 (s), indicating the 1:3 ratio of aluminum to chlorine ions.
what is 7 2/3=1/5x+2/3-1 1/5x
Aqueous copper (ii) ion reacts with aqueous iodide ion to yield solid copper (i) iodide and aqueous iodine. write the balanced net ionic equation. express your answer as a net ionic equation. identify all of the phases in your answer.
Which value is most likely to be the pH of a salt that is formed by the reaction of a strong acid and a weak base?
2.0
7.0
8.0
10.0
The most likely to be the pH of a salt that is formed by the reaction of a strong acid and a weak base is A. 2.0
When a strong acid reacts with a weak base, the resulting salt solution is weakly acidic with a pH around 5.
Therefore, the most likely pH value for this type of solution is 2.0. This behavior is due to the partial dissociation of the weak base in water.When a strong acid reacts with a weak base, the resulting salt solution tends to be weakly acidic.This can be understood by considering that the strong acid will fully dissociate in water, while the weak base will not completely dissociate. As a result, the conjugate acid of the weak base will slightly increase the concentration of H+ ions in the solution, making it acidic.According to the given information, a strong acid combined with a weak base typically results in a solution with a pH of approximately 5.Thus, the value most likely representing the pH of the salt formed by the reaction of a strong acid and a weak base is: 2.0, 7.0, 8.0, or 10.0 is 2.0.
Correct question is: Which value is most likely to be the pH of a salt that is formed by the reaction of a strong acid and a weak base?
A. 2.0
B. 7.0
C. 8.0
D. 10.0
what subatomic particles are found in the space surrounding an atoms nucleus.
A.electrons
B.ions and protons
C.neutrons and electrons
D.protons and neutrons
Answer: Option (A) is the correct answer.
Explanation:
It is know that each element consists of three sub-atomic particles. These are protons, neutrons and electrons.
Inside the nucleus of an atom, there will be only protons and neutrons. Whereas electrons revolve around the nucleus of an atom.
Protons have a positive charge, neutrons have no charge and electrons have a negative charge.
Therefore, we can conclude that electrons are the subatomic particles which are found in the space surrounding an atoms nucleus.
Electrons are the subatomic particles found in the space surrounding an atom's nucleus.
Explanation:The subatomic particles found in the space surrounding an atom's nucleus are electrons. Electrons are negatively charged particles that move around the nucleus in specific energy levels or orbitals. They are attracted to the positively charged protons in the nucleus, creating a balanced electrical charge within an atom. Neutrons and protons are located within the nucleus of an atom, rather than in the space surrounding it.
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Abnormal levels of _________ are linked to migraines, seizures, and schizophrenia. A. dopamine B. glutamate C. norepinephrine D. acetycholine
Abnormal levels of glutamate are linked to migraines, seizures and schizophrenia.
As glutamate is a powerful excitatory neurotransmitter which is released by nerve cells present in the brain.
It is mostly responsible for sending signals between nerve cells, and under normal conditions it plays an important role in learning and memory. So this is the correct answer for the abnormal levels which causes neurological disorders.
Answer:
B
Explanation:
at what temperature will you find more potassium nitrate(kno3) in 100 g of H2O . In other words at which temperature will you have a higher solubility: 10c , 20c , 50c , 85c ?
Ca (ClO) 2
Spell out the full name of the compound.
Final answer:
The full name of the compound Ca(ClO)2 is calcium hypochlorite, which follows the naming convention for ionic compounds with polyatomic ions.
Explanation:
The correct full name of the compound Ca(ClO)2 is calcium hypochlorite. When naming ionic compounds, we combine the name of the metal cation and the base name of the nonmetal anion followed by the appropriate suffix. If the nonmetal forms a polyatomic ion with oxygen, often the endings '-ate' or '-ite' are used to distinguish different ions with the same element. In this case, 'hypochlorite' is the name of the ClO anion part of the compound, and since calcium has a characteristic charge of 2+, we do not need to specify its charge in the name.