Zn (s) + 2Ag(NO3) (aq) → 2 Ag (s) + Zn(NO3)2 (aq)
How many grams of zinc are needed to fully react with 8. 0 moles of silver nitrate?
Answers
261.52 grams of zinc are needed to fully react with 8.0 moles of silver nitrate.
To answer this question, we first need to determine the balanced chemical equation for the reaction given. The equation shows that one mole of zinc reacts with two moles of silver nitrate to produce two moles of silver and one mole of zinc nitrate. This means that the stoichiometric ratio between zinc and silver nitrate is 1:2.
Next, we can use the given amount of silver nitrate (8.0 moles) to determine how much zinc is needed to react completely with it. Since the ratio between zinc and silver nitrate is 1:2, we know that we need half as many moles of zinc as there are moles of silver nitrate.
Therefore, we can calculate the number of moles of zinc needed as follows:
Number of moles of zinc = (1/2) x Number of moles of silver nitrate
Number of moles of zinc = (1/2) x 8.0 mol
Number of moles of zinc = 4.0 mol
Finally, we can use the molar mass of zinc to convert the number of moles into grams:
Mass of zinc = Number of moles of zinc x Molar mass of zinc
Mass of zinc = 4.0 mol x 65.38 g/mol
Mass of zinc = 261.52 g
Therefore, 261.52 grams of zinc are needed to fully react with 8.0 moles of silver nitrate.
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Related Questions
How does the overall charge of oxygen of -16 compare to the overall charge of oxygen -17 and oxygen -18?
Answers
Answer:
-2
The charge on an oxygen ion is -2. An oxygen atoms contain six electrons in its valence electron shell.
Explanation:
15_4_4_11=51 what are the missing operations only using 3 of these /,*,-,+
Answers
Sure! To find the missing operations, which is 51. Let's first focus on the first two numbers in the equation, 15 and 4. We need to perform some operation between them to get a result of 4.
The only operation that will give us a result of 4 when performed on 15 is subtraction (-), as 15 - 11 = 4. So the missing operation between 15 and 4 is subtraction (-). Now let's focus on the last two numbers in the equation, 4 and 11. We need to perform some operation between them to get a result of 51. We know that the missing operation between 15 and 4 is subtraction, so we need to use either multiplication, division, or addition between 4 and 11. Let's start by trying multiplication (*). If we multiply 4 and 11, we get 44. To get from 44 to 51, we would need to add 7. But we don't have the addition (+) operation available to us, so multiplication is not the correct missing operation.
Here's a step-by-step explanation of how to solve the problem ,Step 1: Try different operations in the given equation. Step 2: Insert * as the first operation: 15 * 4 _ 4 _ 11 = 51. Step 3: Now, insert + as the second operation: 15 * 4 + 4 _ 11 = 51. Step 4: Lastly, insert - as the third operation: 15 * 4 + 4 - 11 = 51. By using these operations, the equation becomes: 15 * 4 + 4 - 11 = 60 + 4 - 11 = 64 - 11 = 51. The equation is now true.
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Write a chemical equation for the acid/base reaction that produces the salt potassium sulfate?
Answers
Answer:
KOH + H2SO4 --> K2SO4 + H2O
Arrange the following in order of increasing masses of 1 mole of CO32-, PO43-, SO42- Cl- S2- (1)
Answers
how to write a test variable and an outcome variable for science
Answers
Answer:
A test variable is a user-defined, name-value pair that stores and refers to information throughout a test and between tests.
Provide a default value to the variable during declaration.
Change the value of the variable using Set Variable statement. You can use the Add and Insert menus of the Test Editor to create Set Variable statements.
Set hard-coded value or value retried from a data source, such as dataset or reference that appears before the Set statement to the variable.
If a variable is initialized at various places such as test, compound test, schedule, or user group, the product uses the following order to initialize the value of the variable when running the test. The variable set in the variable table of the compound test editor takes the highest precedence followed by others:
Compound test setting in the variable table UI
Compound test specified in a var file
User group setting in the variable table UI
User group specified in a var file
Schedule specified setting in the variable table UI
Schedule specified in a var file
Command line
Outcome variables are usually the dependent variables which are observed and measured by changing independent variables. These variables determine the effect of the cause (independent) variables when changed for different values. The dependent variables are the outcomes of the experiments determining what was caused or what changed as a result of the study.
For a simple example, the marks a student obtains in an exam is a result of the hard word measured in the number of hours put behind studying and the intelligence measured in IQ are the independent variables. The marks obtained thus represents the dependent or outcome variable. When the values of the independent variables are changed, the marks may or may not change and hence dependent variables are dependent on the independent variables while the opposite is implausible i.e., when the marks are changed, it doesn’t change the number of hours of study or the IQ of the student.
The response variable is also called as the dependent variable because it depends on the causal factor, the independent variable. Depending on the various input values of the experimental variables, the responses are recorded.
Identify the hybridization state, molecular geometry and approximate bond angle around the carbon atom for the molecule shown in box below HCOOH A sp2, tetrahedral, 109 B sp3, trigonal pyramidal, <109.5 sp3, tetrahedral, 109.5 sp2, trigonal pyramidal, 180 Esp2, trigonal planar, 120
Answers
The hybridization state, molecular geometry and approximate bond angle around the carbon atom for the molecule shown in the box below HCOOH is sp2, trigonal planar, 120°.
1. HCOOH is a linear molecule with an oxygen atom attached to a central carbon atom.
2. The carbon atom has two single bonds to the oxygen atoms and one double bond to the oxygen atom, creating a trigonal planar molecular geometry.
3. As the hybridization of the carbon atom is sp2, the approximate bond angle is 120°.
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2. Fe(s) + O2(g) → Fe3O4(s) a. When 13.54 g of O2 is mixed with 12.21 g of Fe, which is the limiting reactant? b. What mass in grams of iron oxide is produced? c. What mass in grams of excess reactant remains when the reaction is complete? d. A student performed completed this reaction in a lab and made15.88 g of Fe3O4, what was their percent yield?
Answers
The percent yield shows the extent to which the reactants are converetd into products . The limiting reactant is used up in the reaction.
What is a limiting reactant?A limiting reactant is the reactant that is in the least amount in the system. Now;
Number of moles of Fe = 12.21 g/56 g/mol = 0.22 moles
Number of moles of O2 = 13.54 g/32 g/mol = 0.42 moles
Balanced reaction equation;
3Fe(s) + 2 O2(g) = Fe3O4(s)
If 3 moles of Fe reacts with 2 mole of O2
0.22 moles of Fe reacts with 0.22 moles * 2 mole/3 moles = 0.15 moles
Hence, Fe is the limiting reactant
If 3 mole of Fe produces 1 mole of Fe3O4(s)
0.22 moles of O2 produces 0.22 moles * 1 mole/3 moles of Fe3O4(s) = 0.1073 moles
Mass of Fe3O4(s) =0.1073 moles * 232 g/mol =16.9 g
Number of moles of excess reactant = 0.42 moles - 0.15 moles = 0.27 moles
Mass of excess reactant = 0.27 moles * 32 g/mol = 8.64 g
percent yield = 15.88 g/16.9 g * 100/1
= 93.4%
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Silver +
sulfuric acid —> makes what?
Answers
Answer:
Silver react with sulfuric acid to produce silver sulfate, sulfur dioxide and water.
Explanation:
what binary compound would be formed from barium ions and fluoride ions? select one: a. ba2f3 b. baf3 c. baf d. ba2f e. baf2
Answers
The binary compound formed from barium ions and fluoride ions would be BaF₂.
So, the correct answer is E.
This is because barium has a 2⁺ charge and fluoride has a 1- charge. In order to balance the charges, two fluoride ions are needed for every barium ion. The formula for this compound is BaF₂, where Ba represents barium and F represents fluoride.
This compound is a white, crystalline solid that is commonly used in the production of optical lenses and in the manufacturing of ceramics. It is also used in the dental industry as a material for fillings and crowns due to its high resistance to acid erosion and wear
Hence,the answer of the question is E.
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the prius, a hybrid car produced by toyota, uses a battery that its maker claims should not have to be recharged or replaced during the lifetime of the car. the type of battery used in the prius is
Answers
The type of battery used in the Prius, a hybrid car produced by Toyota, is a Nickel-Metal Hydride (NiMH) battery. According to the maker's claims, this battery should not have to be recharged or replaced.
The Prius originally used Nickel-Metal Hydride (NiMH) batteries for its hybrid powertrain. NiMH batteries are known for their higher energy density compared to conventional lead-acid batteries. They are capable of storing and delivering a significant amount of energy, making them suitable for powering the electric motor in hybrid vehicles like the Prius. The manufacturer claims that the NiMH battery in the Prius is designed to last for the lifetime of the car without needing to be recharged or replaced.
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Calculate the moles in 8334 grams of krypton, show work
Answers
moles = 8334 g / 83.798 g/mol
= 99.47 moless.s.
Therefore, there are 99.47 moles of krypton in 8334 grams.
You are creating a carbon cycle poster in which direction would you draw arrows to show the movement of carbon through the process of respiration?
A. from the rock to the air
B. from the rock to the grass
C. from the air to the wolf
D. from the wolf to the air
Answers
Describe an experiment that can be conducted to show that living materials contain water
Answers
Answer:
MATERIALS:graduated one liter bottle1 white carnation with long stem2 glassesred and blue food coloringPROCEDURE:1. Pour 500 ml of water into each glass.2. Add three or four drops of food coloring to each glass. Be sure the color is dark. Add more food coloring if necessary.3. Very carefully cut the stem in half along the length of the stem from the bottom to about half way up to the flower.4. Place one half of the flower stem in the blue water and the other half of the stem in the red water.5. Let the flower stand in the water for 48 hours (2 days).6. Enrichment: Repeat the experiment with another flower, but cover the flower only with plastic wrap and secure the bottom of the plastic wrap with tape.DATA: Be sure to record your observations and inferences.CONCLUSION: This is not optional. You must explain what you learned by doing this activity.
Explanation:
try this with the help of ur parents or teacherLet us consider a stem to be a living material in this case:
An experiment that can be conducted to show that living materials contain water can be shown below:
An activity to show that stem conducts water and other substances is given below:
1) Take a glass and put some water in it.
2) Put a few drops of red ink in the water.
3) Cut the stem from the base of an herb plant.
4) Place the stem in the glass.
5) Results are observed, some parts of the stem become red and they indicate that water is being conducted through the stem.
Thus, we can say that through this activity that living material contains water. A stem is a part that connects the roots to the leaves, stores food, provides support, and holds the flowers, leaves, and buds.
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Read the given equation.na2o2+ co2 → na2co3 + o2 what volume of o2 gas is produced from 4.60 liters of co2, assuming all values are measured at stp? a. 1.20 liters b. 2.30 liters c. 5.20 litersd. 9.20 liters
Answers
9.20 liters is not correct as it is twice the volume of CO2 given and does not match the mole ratio of the balanced equation. The correct option is D.
As per the question given,
The balanced chemical equation is:
Na2O2 + CO2 → Na2CO3 + O2
From the equation, we can see that 1 mole of CO2 produces 1 mole of O2. Therefore, we need to convert the given volume of CO2 (4.60 L) to moles, and then use the mole ratio to calculate the volume of O2 produced.
At STP (Standard Temperature and Pressure), 1 mole of any gas occupies 22.4 L.
So, the number of moles of CO2 present is:
n = V/22.4 = 4.60 L/22.4 L/mol = 0.2054 mol
According to the balanced equation, 1 mole of CO2 produces 1 mole of O2. Therefore, the number of moles of O2 produced is also 0.2054 mol.
The volume of O2 at STP is:
V = n x 22.4 L/mol = 0.2054 mol x 22.4 L/mol = 4.60 L
Therefore, the volume of O2 gas produced from 4.60 liters of CO2 is also 4.60 liters.
Answer: The correct option is d. 9.20 liters is not correct as it is twice the volume of CO2 given and does not match the mole ratio of the balanced equation.
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What is the definition of a covalent bond?
1. A bond between two positive ions
2. A bond between a positive and a negative ion
3. A bond between two negative ions
4. A bond between two atoms
Answers
Answer:
4. A bond between two atomsExplanation:
A covalent bond consists of the mutual sharing of one or more pairs of electrons between two atoms. These electrons are simultaneously attracted by the two atomic nuclei. A covalent bond forms when the difference between the electronegativities of two atoms is too small for an electron transfer to occur to form ions.
plastic don't react with
Answers
Answer:
Most plastic is chemically inert and will not react chemically with other substances -- you can store alcohol, soap, water, acid or gasoline in a plastic container without dissolving the container itself.
Explanation:
Answer:
Most plastic is chemically inert and will not react chemically with other substances -- you can store alcohol, soap, water, acid or gasoline in a plastic container without dissolving the container itself.
Explanation:
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With the high sedimentation and evaporation rates associated
with most dams and reservoirs, are they really a sustainable and
efficient way to store water?
Answers
Dams and reservoirs can provide reliable water storage but have potential environmental impacts such as habitat loss and disruption of natural flow.
Sedimentation can reduce the storage capacity of reservoirs over time, requiring periodic dredging or desilting to maintain efficiency. Evaporation can lead to water loss from the reservoir, particularly in arid or semi-arid regions with high evaporation rates. These factors need to be carefully managed to ensure the long-term sustainability and efficiency of water storage.
Sedimentation and evaporation are important considerations that need to be managed. Social and economic impacts should also be assessed. Alternative approaches and improved water management practices can enhance sustainability and efficiency. Careful planning, impact assessments, stakeholder engagement, and monitoring are crucial for mitigating negative impacts and maximizing benefits.
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In a lab experiment 80.0 g of ammonia [NH3] and 120 g of oxygen are placed in a reaction vessel. At the end of the reaction 72.2 g of water are obtained. Determine the percent yield of the reaction.
Answers
Look at the following reaction:
2Al(s) + 3CuCl₂(aq) → 2AlCl3(aq) + 3Cu(s)
This is an example of what type of reaction?
O Single replacement
O Double replacement
ODecomposition
O Synthesis
Answers
Answer:
Single replacement
Explanation: Al is replacing Cu
What is the formula for Iron(IV) phosphite
Answers
Answer:
The answer is Iron phosphide (Fe2P)
the lattice energy of sodium chloride, nacl, is -787.5 kj/mol. the lattice energy of potassium chloride, kcl, is -715 kj/mol. in which compound is the bonding between ions stronger? why?
Answers
Because NaCl takes more energy to break it's bigger.
For NaCl, the structure or lattice formation enthalpy is -787 kJ mol-1. Therefore, the lattice dissolution enthalpy is always positive and the lattice formation enthalpy is always negative. The reason that NaCl has the highest lattice enthalpy is that for similar anions, cations with smaller radii have higher lattice enthalpies.
If we want to talk about the amount of energy released when a lattice forms from scattered gas ions we should use the lattice formation enthalpy. MgO has a higher lattice energy because each ion carries two unit charges compared to one in NaCl. NaCl is a compound with higher lattice energy. Description Lattice energy is defined as the energy released when the combination of its constituent ions forms one mole of an ionic compound.
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Write a Lewis structure that obeys the octet rule for the following species. Assign the formal charge for the central atom of. ClO3-If multiple resonance structures exist, use one that does not involve an expanded valence
Answers
The Lewis structure for ClO3- is as follows:
O
|
Cl--O
|
O-
To determine the formal charge of the central atom Cl, we need to calculate the valence electrons and nonbonding electrons present in ClO3-. Chlorine has 7 valence electrons, and each oxygen atom contributes 6 electrons for a total of 24 valence electrons. In this structure, there are 3 lone pairs on each oxygen atom and one Cl-O double bond.
The formal charge of Cl can be calculated as follows:
Formal charge = Valence electrons - Nonbonding electrons - 1/2 (bonding electrons)Formal charge of Cl = 7 - 6 - 4 = -3The formal charge on the central atom, Cl, is -3. This indicates that Cl has an extra electron compared to its neutral state. The other oxygen atoms have a formal charge of -1 each, indicating that they have an extra electron as well. This arrangement of formal charges indicates that the ClO3- ion is a negatively charged species. The Lewis structure shows that ClO3- obeys the octet rule as each atom has a full outer shell of electrons.
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Justify the statement, "nuclear energy is harmful as well as useful."
Answers
Nuclear energy is harmful because it releases of harmful ionizing radiation and has been employed in the production of atomic bombs and hydrogen bombs.
Nuclear energy is beneficial in that it produces vast amount of energy for domestic and industrial purposes.
What is nuclear energy?Nuclear energy refers to the energy which is produced as a result of the changes that occur in the nucleus of atoms of elements.
Nuclear energy produces the largest amount of energy when compared to other forms of energy sources.
Nuclear energy is produced by two types of nuclear reactions:
Nuclear fission and Nuclear fusionNuclear energy is harmful in that it results in the release of harmful ionizing radiation which damages cells and tissues of living organisms.
Nuclear energy is also harmful because nuclear energy has been employed in the production of atomic bombs and hydrogen bombs.
On the other hand, nuclear energy is beneficial in that it produces vast amount of energy which can be used for domestic and industrial purposes. It also produces fewer wastes that damage the environment compared to fossil fuels.
In conclusion, nuclear energy is both beneficial and harmful.
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What is the muscle that when contracted, it allows the lungs to fill with air?
Answers
Answer:
It is a large, dome-shaped muscle that contracts rhythmically and continually, and most of the time, involuntarily. Upon inhalation, the diaphragm contracts and flattens and the chest cavity enlarges. This contraction creates a vacuum, which pulls air into the lungs.
Explanation:
Answer:
Explanation:
The muscle that is contracted, it allows the lungs to fill with air through diaphragm muscle.
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A students has 1.70 moles of manganese. How many grams of manganese do they have
Answers
The number of grams in 1.70 moles of manganese is 93.5grams.
How to calculate mass?The mass of a substance can be calculated by multiplying the number of moles in the substance by its molar mass as follows:
mass = molar mass × no of moles
According to this question, a student has 1.70 moles of manganese. The number of grams of manganese that they have can be calculated as follows:
molar mass of Manganese = 55g/mol
mass = 1.70 × 55
mass = 93.5g
Therefore, 93.5grams is the mass of manganese
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Calculate the mass of 1.35 moles of sodium chloride
Answers
Answer:
78.894g of NaCl
Explanation:
This requires some dimensional analysis:
Using the molar mass of NaCl we get the answer we are looking for.
1.35 Moles of NaOH * \(\frac{58.44g NaCl}{ 1 mole NaCl}\) = 78.894 g of NaCl
A man's speed is 50 m/s and his mass is 120 kg. What is his kinetic energy just before running back up? |
kg*m/s
Answers
Answer:
150,000 Joules
Explanation:
KE= 1/2 *mv^2
1/2 * 120 *50^2
60*2500
150,000 Joules
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write a balanced equation for the hydrolysis of one of the phosphoanhydride bonds, draw all reactants and products
Answers
Phosphoanhydride bond hydrolysis: \(ATP + H2O → ADP + Pi\)
How do you hydrolyze phosphoanhydride bonds?The hydrolysis of a phosphoanhydride bond typically refers to the breaking of the bond in a phosphate group. Here is the balanced equation for the hydrolysis of a phosphoanhydride bond in ATP (adenosine triphosphate):
\(ATP + H2O ⟶ ADP + Pi\)
In this equation, ATP (adenosine triphosphate) reacts with water (\(H2O\)) to form ADP (adenosine diphosphate) and inorganic phosphate (Pi). The hydrolysis of the phosphoanhydride bond in ATP releases energy that can be used by cells for various biological processes.
Reactants:
Adenosine triphosphate (ATP): \(C10H16N5O13P3\)and Water (\(H2O\))
Products:
adenosine diphosphate and Inorganic phosphate (Pi): \(H3PO4\)
In the reactants, ATP consists of an adenosine molecule (adenine and ribose) linked to three phosphate groups. After hydrolysis, one of the phosphate groups is removed, forming ADP, and releasing inorganic phosphate (Pi).
Overall, the hydrolysis of the phosphoanhydride bond in ATP allows the transfer of energy and conversion of ATP to ADP, which is an essential process in cellular energy metabolism.
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A 23.7 g piece of iron at 54.9 C is cooled and releases 338 J of heat. The specific heat of iron is 0.450 J/gC. What is the final temperature of the iron?
Answers
Answer:
39
Explanation:
cux it is
Answer: 23.3 °C
Explanation: The one above is wrong
What is the conjugate base of ch3ch2sh?
1) ch3ch2s- 2) ch3ch2- 3) ch3ch2sh2 4) ch3ch2s2- 5) none of these
Answers
The correct option is 1.CH3CH2S
The conjugate base of CH3CH2SH (ethanethiol) is CH3CH2S-.
To determine the conjugate base, we remove a proton (H+) from the molecule. In this case, removing a proton from the sulfur atom (S) results in the formation of the ethanethiolate ion (CH3CH2S-).
The remaining options given are:
CH3CH2S-: This is the correct conjugate base of ethanethiol.
CH3CH2-: This is not the conjugate base of ethanethiol, as it is missing the sulfur atom.
CH3CH2SH2: This is not the conjugate base of ethanethiol, as it retains the proton on the sulfur atom.
CH3CH2S2-: This is not the conjugate base of ethanethiol, as it contains two sulfur atoms (disulfide ion).
None of these: This is not the correct answer since option 1 (CH3CH2S-) is indeed the conjugate base of ethanethiol.
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