What is the formula for phosphorus trihydride
Answers
Also known as phosphine
Related Questions
What is the bond angle of a tetrahedral?
Answers
The bond angle of a tetrahedral molecule is approximately 109.5 degrees. This is because a tetrahedron is a three-dimensional shape with four equivalent sp3 hybridized orbitals forming the corners of the tetrahedron.
Understanding Tetrahedral Bond AnglesThe bond angle of a tetrahedral molecule is one of the most fundamental and important concepts in chemistry. A tetrahedron is a three-dimensional shape with four equivalent sp3 hybridized orbitals forming the corners of the tetrahedron. These hybridized orbitals result from the combination of the s and p orbitals of the central atom, creating four orbitals that are directed towards the four corners of the tetrahedron.
Each orbital can form a bond with an adjacent atom or molecule, resulting in four identical bonds in a tetrahedral molecule. The ideal bond angle between adjacent bonds in a tetrahedral molecule is 109.5 degrees, which is due to the geometric arrangement of the orbitals around the central atom. The four orbitals are arranged such that they are as far apart from each other as possible, resulting in an angle of 109.5 degrees between adjacent bonds.
Examples of tetrahedral molecules include methane (CH4), which has four identical C-H bonds arranged around the central carbon atom, and carbon tetrachloride (CCl4), which has four identical C-Cl bonds arranged around the central carbon atom. The understanding of tetrahedral bond angles is important in various fields of chemistry, including organic chemistry, biochemistry, and materials science, and it provides a basis for understanding the properties and behavior of many molecules.
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The atmospheric pressure on a mountain is 500 mmHg and 1 atm is equal to 760 mmHg. What is the pressure in atm?
Answers
Answer:
≈ 0.6579 atm
Explanation:
The pressure in atmospheres is the ratio of the pressure on the mountain to one atmosphere, in corresponding units.
The pressure is ...
500 /760 atm = 25/38 atm ≈ 0.6579 atm
What is the mass of nitrogen in 500.g of ammonia?
A)
509
B)
829
C)
100 g
D)
411 g
Answers
Answer:
b
Explanation:it b
Answer:
d:411 g
Explanation:
Question 2(Multiple Choice Worth 3 points) (02.03 MC) The following orbital notation is for which element? He OF # UKK E
Answers
The orbital notation that have been shown belongs to sodium atom.
What is orbital notation?
Following the wave mechanical model, the orbital is the region in space where there is a high probability of finding the electron and the electron can be arranged in the orbital leading to a given orbital diagram.
Orbital notation is a useful tool for understanding the electronic structure of atoms and ions. When representing the electrons in an atom or ion using orbital notation, arrows are used to indicate the electrons and boxes are used to represent the orbitals.
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A new reach of 36 inch pipe containing 0.029 million gallons needs to be disinfected with chlorine, using 50 mg/l. how much chlorine gas must be applied in this procedure?
Answers
Twelve pounds of chlorine gas must be applied in the procedure.
It was done by the Chlorine Feed Rate formula.
One of the processes used to fine-tune the amount of chlorine gas required in water is the Chlorine Feed Rate.
The formula is flow*dose*8.34.
According to the given question,
= flow*dose*8.34 = 50*0.036*8.34 = 12 pounds.
Chlorine gas is considered one of the best disinfectants in order to prevent bacteria.
This is also termed chlorination (C*T =D).
According to various health organizations, 5 mg/l of chlorine can be used in water and can be consumed.
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uh id.k how to fill this out, i mean the type of reaction part is obvious but id.k what to put in the box and the other blue part.
Answers
Answer:
Explanation:
Strontium chlorate appears as a moist solid or semi-solid slurry of white crystals. May explode under exposure to heat or fire. Used in pyrotechnics
strontium chlorate | Sr(ClO3)2 - PubChem.
Description: Strontium chlorate appears as a ...
Synonyms: STRONTIUM CHLORATE7791-10-...
Molecular Formula: Sr(ClO3)2 or Cl2O6Sr
Question 4 of 10
The ACT science test takes______ minutes.
O A. 60
B. 30
O C. 35
OD. 45
Answers
what is the diffrince in snow and hail?
Answers
Which of the following statements is the best example of an interaction between the atmosphere and the hydrosphere ? Done rnnnn
Answers
2C₂H₂(g) + 5O₂(g) —> 4CO₂(g) +2H₂O(g)
b. How many moles of H₂O are produced when 64.0g C₂H₂ burns in oxygen?
Answers
64.0g C2H2 X 1 mol C2H2 over 26.04g C2H2 X 2 mol H2O over 2 mol C2H2
The first step of the equation is a basic diversion factor showing that for ever C2H2, there’s one mole. I got the number 26.04 grams of C2H2 by calculating their combined mass. To do that, I added them from the periodic table for and multiplied it by the amount of each that I had. Which was displayed as 12.01(2) + 1.01(2)
The second step to the equation is the mole conversion factor. In this step, I took the number of moles from the equation. That just shows that for every 2 moles of C2H2, there will be 2 moles of H2O.
After setting it up, you can ignore any ones in the problem as they won’t make any difference in the answer. And since, in this equation, the moles in the mole conversion factor are equal, you may ignore those too as they will divide down to one and not have any significance.
Now, to find the answer I divided 64.0g C2H2 by 26.04g C2H2 since everything else cancelled out. It equals 2.457757296 moles of H20. But, to get get credit for the sig-figs, you’ll have to change the numbers before submitting.
The beginning number has three placements (64.0) so the answer must also have three. If we look at the long decimal we got in the calculator, we can go over three and round the last number either up or down depending on the fourth number.
Nucleic acid blotting is widely used in recombinant dna technology. in a southern blot, one generally ________. group of answer choices
Answers
Nucleic acid blotting is widely used in recombinant DNA technology. in a southern blot, one generally hybridizes filter bound DNA with DNA probe groups of answer choices
When examining the structure of a gene, whether it is cloned or not, Southern blotting can be useful. It can be used to identify the restriction enzyme map of a gene or to look at spontaneous mutational events in a gene, including insertions, deletions, or recombination-induced rearrangements. Molecular biology and recombinant DNA technology have greatly benefited from the Southern blotting method of detecting homologous DNA sequences.
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a mixture is made by combining 1.99 lb of salt and 4.88 lb of water. what is the percentage of salt (by mass) in this mixture?
Answers
Answer:
29%
Explanation:
1.99 / ( 1.99 + 4.88) x 100% = ~ 29%
2. why do some molecules have more chemical/potential energy than other molecules—what specifically determines how much chemical energy exists in a molecule?
Answers
Temperature: Higher temperatures increase the kinetic energy of molecules, which in turn can increase their potential energy and their ability to undergo chemical reactions.Thus, it can be concluded that there are various factors that determine how much chemical energy exists in a molecule, including bond strength, electron configuration, molecular size, polarity, and temperature.
When it comes to molecules, why do some molecules have more chemical/potential energy than others? What specifically determines how much chemical energy exists in a molecule?Potential energy is the energy that a molecule possesses due to its position, composition, or structure. Chemical energy is the energy that a molecule possesses due to its potential to undergo a chemical reaction.Chemical energy, like all forms of energy, is measured in joules. The amount of chemical energy that a molecule possesses is influenced by a variety of factors, including:1. Bond Strength: The stronger the bond between atoms in a molecule, the more chemical energy it has.2. Electron Configuration: Electrons in molecules are arranged in orbitals, and the energy of an orbital influences the energy of a molecule.3. Molecular Size: The larger the molecule, the more energy it possesses, which is due to the increased number of atoms in the molecule.4. Polarity: Molecules with polar bonds tend to have more chemical energy than non-polar molecules due to their potential to interact with other polar molecules.Temperature: Higher temperatures increase the kinetic energy of molecules, which in turn can increase their potential energy and their ability to undergo chemical reactions.Thus, it can be concluded that there are various factors that determine how much chemical energy exists in a molecule, including bond strength, electron configuration, molecular size, polarity, and temperature.
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what will be the result of the reaction
(CH3COO)2+redP +Cl2
Answers
Answer:
(CH3COO)2 + redP + Cl2 → ClCH2COOH + HCl
Explanation:
This is an example of halogenation of carboxylic acids at alpha carbon atom. In this reaction, red phosphorus and chlorine are treated with carboxylic acids having alpha hydrogen atom followed by hydrolysis to form alpha chloro carboxylic acid.
4. In an experiment, 170.9 g of C_{2}*H_{4} was reacted with 52.75L of , 64.1 g of C*O_{2} is produced .What is the limiting reagent? ) What is the percent yield of this reaction?
Answers
O₂ is the limiting reagent and C₂H₄ is in excess.
The percent yield is 92.8%
The Limiting ReagentTo determine the limiting reagent, we need to compare the amounts of reactants and products using stoichiometry. The balanced equation for the reaction between C₂H₄ and O₂ to produce CO₂ and H₂O is:
C₂H₄ + 3 O₂ → 2 CO₂ + 2 H₂O
From the given data, we can calculate the number of moles of each reactant:
moles of C₂H₄ = 170.9 g / 28.05 g/mol = 6.089 mol
moles of O₂ = 52.75 L * (1 mol / 22.4 L) = 2.357 mol
moles of CO₂ produced = 64.1 g / 44.01 g/mol = 1.456 mol
Now we can use the stoichiometric coefficients from the balanced equation to determine which reactant is limiting:
For every 1 mole of C₂H₄, we need 3 moles of O₂ to produce 2 moles of CO₂.
The moles of O₂ available (2.357 mol) are less than what is required (3 × 6.089 mol = 18.267 mol) if all the C₂H₄ reacts, so O₂ is the limiting reagent.
Therefore, O₂ is the limiting reagent and C₂H₄ is in excess.
To calculate the theoretical yield of CO₂, we use the amount of limiting reagent:
moles of CO₂ produced = 2.357 mol O₂ × (2 mol CO₂ / 3 mol O₂) = 1.571 mol CO₂
theoretical yield of CO₂ = 1.571 mol × 44.01 g/mol = 69.12 g CO₂
The percent yield of the reaction can be calculated by dividing the actual yield (64.1 g) by the theoretical yield (69.12 g) and multiplying by 100:
percent yield = (64.1 g / 69.12 g) × 100% = 92.8%
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In order to have a more observable reaction, a student decides to add some deionized water to the Erlenmeyer flask. How will the experimental [HCl] be skewed
Answers
Adding deionized water to the Erlenmeyer flask will dilute the concentration of HCl in the solution. When deionized water is added to the flask, it increases the volume of the solution without changing the amount of HCl present. As a result, the concentration of HCl will decrease.
The concentration of a solution is defined as the amount of solute (in this case, HCl) dissolved in a given volume of solvent (in this case, deionized water). By adding more deionized water, the total volume of the solution increases, but the amount of HCl remains the same. Therefore, the concentration of HCl will decrease.
The effect of dilution on the concentration of a solution is described by the equation C1V1 = C2V2, where C1 and V1 represent the initial concentration and volume, and C2 and V2 represent the final concentration and volume. In this case, the initial concentration of HCl will be higher before adding deionized water, and the final concentration will be lower after adding deionized water.
In conclusion, adding deionized water to the Erlenmeyer flask will decrease the concentration of HCl, resulting in a skewed experimental [HCl].
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CgH8(g) + 5 O2(g) - 4H2O(g) + 3 CO2(g)
The volumes of the reactants and products of this reaction are measured under the same conditions. What is the total number of liters of CO2
produced when 150 liters of O2 reacts completely with C3H8?
A) 3. 0
B) 90
C) 150
D) 250
Answers
The total number of liters of CO2 produced when 150 liters of O2 reacts completely with C3H8 is 90 liters.
In the balanced chemical equation provided: C3H8(g) + 5 O2(g) → 4 H2O(g) + 3 CO2(g), we can see that for every 5 moles of O2 consumed, 3 moles of CO2 are produced. Since the volumes are measured under the same conditions, we can use the ideal gas law to relate the volumes of gases to their respective number of moles.
According to the ideal gas law, PV = nRT, where P is the pressure, V is the volume, n is the number of moles, R is the gas constant, and T is the temperature. Since the pressure, temperature, and gas constant are constant, we can assume that the ratio of volumes is equal to the ratio of moles.
Given that 150 liters of O2 reacts completely, we can set up the following proportion:
(150 L O2) / (x L CO2) = (5 moles O2) / (3 moles CO2)
Cross-multiplying and solving for x, we get:
x = (150 L O2 * 3 moles CO2) / (5 moles O2) = 90 L CO2.
Therefore, the total number of liters of CO2 produced is 90 liters. Hence, the correct answer is option B) 90.
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an atom of which of the following elements can form the most bonds?
a. phosphorus
b. sodium
c. oxygen
d.oxygen
Answers
A.phosphorus
:)
write out the solubility equilibrium reactions, and ksp expressions, for the following insoluble compounds. agcl, caco3, al2o3 be sure to include states of matter in your reactions
Answers
The solubility equilibrium reactions and Ksp expressions for the insoluble compounds AgCl, CaCO3, and Al2O3 are as follows:
1. AgCl:
AgCl(s) ⇌ Ag+(aq) + Cl-(aq)
Ksp = [Ag+][Cl-]
2. CaCO3:
CaCO3(s) ⇌ Ca2+(aq) + CO32-(aq)
Ksp = [Ca2+][CO32-]
3. Al2O3:
Al2O3(s) ⇌ 2Al3+(aq) + 3O2-(aq)
Ksp = [Al3+]^2[O2-]^3
For each of these insoluble compounds, there is an equilibrium reaction that describes the dissociation of the solid into its component ions in solution. These reactions are reversible, meaning that the ions can also recombine to form the solid. The Ksp expression represents the equilibrium constant for this reaction, which is the product of the concentrations of the ions raised to their stoichiometric coefficients.
In the case of AgCl, the solid dissociates into Ag+ and Cl- ions in solution. The Ksp expression only includes the concentrations of these two ions, since they are the only ones present in significant amounts in solution. For CaCO3, the solid dissociates into Ca2+ and CO32- ions, which are both included in the Ksp expression. Finally, for Al2O3, the solid dissociates into two Al3+ ions and three O2- ions, which are included in the Ksp expression according to their stoichiometric coefficients.
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What is theoretical yield in moles of oxygen when there are 18.3 moles of hydrogen ?
2H2 + O2 --> 2H2O
Answers
The theoretical yield of the water in the reaction is 329.4 g.
What is the theoretical yield?
We know that we can be able to obtain the theoretical yield when we look at the stoichiometry of the reaction that we have here. In this case, it is clear that would need to rely on the reaction equation and it would be our guide.
We have that;
2 moles of hydrogen would produce 2 moles of water
18.3 moles of hydrogen would also produce 18.2 moles of water.
Theoretical yield of water would now be;
18.3 * 18 g/mol
= 329.4 g
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convert 8.7x10^24 atoms of ammonium chloride to grams of ammonium cloride
Answers
The mass of 8.7x10^24 atoms of ammonium chloride would be 772.93 grams.
Mass of atoms of substancesAccording to standards, 6.022 x \(10^{23\) atoms of any substance is equivalent to 1 mole of the substance.
6.022 x \(10^{23\) atoms = 1 mole
8.7 x \(10^{24\) atoms of ammonium chloride = 8.7 x \(10^{24\) /6.022 x \(10^{23\)
= 14.45 mol of ammonium chloride.
The molar mass of ammonium chloride is 53.49 g/mol.
The mass of 14.45 mol ammonium chloride would be:
14.45 x 53.49 = 772.93 grams
In other words, 8.7 x \(10^{24\) atoms of ammonium chloride is equivalent to 772.93 grams of ammonium chloride.
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Gravity relates to a stream's ability to erode and deposit material by causing water to flow faster down a steep slope. True or False
Answers
Answer:
true
Explanation:
Which one is NOT the name of a measurement system? (1 Point) International System of Units Metric System Spanish System British System
Answers
Spanish System is not the name of a measurement system
WHAT IS MEASUREMENT SYSTEM?
Measurement system are standard systems that are made up of collection is of units of measurement and guiding rules. Measurement system relates numerical values to physical quantities. There are three major system of measurements in use, they are:The international system of units (S.I units)The metric systemThe British imperial systemHence, Spanish System is not one of the names of measurement of systems.
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A scientist is studying the liquid shown here. She thinks the liquid is a mixture.
Describe an investigation she could do to demonstrate that the liquid is in fact a
combination of substances.
100
1300
200
100
800-m
Answers
Answer:
You have not shown the liquid which is to be shown, please show us
Select the correct answer.
What is the purpose of the arrow in a chemical equation?
OA. It indicates the direction in which the reaction occurs.
OB.
It separates the elements from the compounds.
OC.
It indicates the direction of increase in the number of molecules.
It indicates the direction of heat movement in a reaction.
O D.
Reset
Next
Answers
Answer: A. It indicates the direction in which the reaction occurs.
What volume of oxygen at stp will be obtained when 24.5g of potassiumtrioxochrate(v) crystal are heated (o=16,k=39,cl=35.5)
Answers
The volume of oxygen at STP that will be obtained when 24.5 g of potassiumtrioxochlorate(V) crystals are heated is approximately 6.17 L.
What is potassiumtrioxochlorate(V) ?
Potassiumtrioxochlorate(V) is a chemical compound with the chemical formula KClO3. It is also known as potassium chlorate or chloric acid, potassium salt.
The chemical formula for potassiumtrioxochlorate(V) is KClO3.
We can start by writing a balanced chemical equation for the reaction :
2KClO3(s) → 2KCl(s) + 3O2(g)
From the equation, we can see that 2 moles of KClO3 produce 3 moles of O2. Therefore, we need to first calculate the number of moles of KClO3 in 24.5g of the compound:
mass of KClO3 = 24.5gmolar mass of KClO3 = 39 + 35.5 + 3(16) = 122.5 g/molmoles of KClO3 = mass/molar mass = 24.5g/122.5 g/mol = 0.2 molSince 2 moles of KClO3 produce 3 moles of O2, we can use this ratio to calculate the number of moles of O2 produced:
moles of O2 = (3/2) x moles of KClO3 = (3/2) x 0.2 mol = 0.3 mol
Finally, we can use the ideal gas law to calculate the volume of O2 at STP:
PV = nRT
Where
P = pressure (STP is defined as 1 atm)V = volume, n = number of moles R = gas constant (0.08206 L atm/mol K)T = temperature (273 K)Rearranging the equation, we get:
V = nRT/P = (0.3 mol)(0.08206 L atm/mol K)(273 K)/(1 atm) = 6.17 L
Therefore, the volume of oxygen at STP that will be obtained when 24.5 g of potassiumtrioxochlorate(V) crystals are heated is approximately 6.17 L.
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Given the following reaction in acidic solution: Fe2+ (aq) + Cr2O72- (aq) ? Fe3+ (aq) + Cr3+ (aq). What is the coefficient of water in the balanced reaction?
Answers
In the reaction: Fe²⁺(aq) + Cr₂O₇²⁻(aq) → Fe³⁺(aq) + Cr³⁺(aq), the coefficient of water in the balanced reaction is 7.
To find the coefficient of water in the balanced reaction Fe²⁺(aq) + Cr₂O₇²⁻(aq) → Fe³⁺(aq) + Cr³⁺(aq) in an acidic solution, follow these steps:
1. Determine the oxidation states of each species:
Fe²⁺ has an oxidation state of +2
Cr₂O₇²⁻: Cr has an oxidation state of +6, and O has an oxidation state of -2
Fe³⁺ has an oxidation state of +3
Cr³⁺ has an oxidation state of +3
2. Identify the species being oxidized and reduced:
Fe²⁺ is being oxidized to Fe³⁺ (oxidation state increases from +2 to +3)
Cr₂O₇²⁻ is being reduced to Cr³⁺ (oxidation state decreases from +6 to +3)
3. Balance the atoms and charges through half-reactions:
Oxidation half-reaction: Fe²⁺ → Fe³⁺ + e⁻
Reduction half-reaction: Cr₂O₇²⁻ + 14H⁺ + 6e⁻ → 2Cr³⁺ + 7H₂O
4. Balance the number of electrons transferred in both half-reactions:
Oxidation: 6Fe²⁺ → 6Fe³⁺ + 6e⁻
Reduction: Cr₂O₇²⁻ + 14H⁺ + 6e⁻ → 2Cr³⁺ + 7H₂O
5. Add the balanced half-reactions to obtain the balanced overall reaction:
6Fe²⁺ + Cr₂O₇²⁻ + 14H⁺ → 6Fe³⁺ + 2Cr³⁺ + 7H₂O
Therefore, the coefficient of water in the balanced reaction is 7.
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True or False;
aa is faster moving lava than pahoehoe?
Answers
Answer:
It is false :l
Explanation:
Pahoehoe is a smooth and continuous lava crust. Pahoehoe forms when the effusion rate is low and consequently the velocity of lava flow is slow. Pahoehoe lava flow is usually at least 10 times slower than typical aa lava flow.
:/
Four animals were fleeing from a wildfire. All of them were running at a speed of 30 miles per hour. Which one has the greatest kinetic energy?
A Elephant
B) Dog
© Mouse
D) Ant
Answers
Answer: I don’t know lol
Explanation: I am so sorry I thought this was easy
Answer:
Ant.
Explanation:
The dog would be the most frantic, when all are compared at an equal speed of 30 mph. An ant of such strength, has six jointed legs and has an exoskeleton. An Ant of such size(mass) and weight would have take off with better traction too(6 legs). So the Ant would have the greatest kinetic energy. Also it would take turns while fleeing from the wildfire, while running at almost 30 mph while the other animals wouldn't come that close.
It is technically and literally illogical to say an ant can do 30 mph in its regular size.
Dont believe me? Watch ants scurrying away when threatened and taking turns and U-turns. Six legs offer more energy while fleeing by instinct. Literally six legs at 30 mph. Crazy!
A chemist needs to know the mass of a sample of potassium sulfate to 6 significant digits. He puts the sample on a digital scale. This is what the scale shows:00.94.39 g If this measurement is precise enough for the chemist, round it to 6 significant digits., Otherwise, press the "No sclution" button.
Answers
In order to determine whether the mass of a sample of potassium sulphate measured to 00.94.39 g is precise enough for a chemist, the number of significant figures must be determined. 00.94.39 g has 5 significant figures. The chemist needs to know the mass of a sample of potassium sulfate to 6 significant digits. As a result, this measurement is not precise enough for the chemist since it only contains 5 significant figures. Thus, the solution is "No solution."
The measurement on the digital scale is given as 00.94.39 g.
0: This digit indicates that the measurement is less than 1 gram.
0: Another zero, indicating that the measurement is less than 0.1 grams.
. : The decimal point separates the whole number part from the fractional part.
9: This digit represents 9 tenths of a gram.
4: This digit represents 4 hundredths of a gram.
3: This digit represents 3 thousandths of a gram.
9: This digit represents 9 ten-thousandths of a gram.
Putting it all together, the expanded form of the measurement is:
0.09439 g
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