5.00mole of Zn metal is completely reacted in an HCl solution to produce zinc(II) choride (ZnCl2) and hydrogen gas (H2) according to:
Zn(s) + 2HCl(aq) -----> ZnCl2(aq) + H2(g)
1. How many moles of ZnCl2 are produced?
2. How many moles of HCl are reacted?
Answers
Answer: 1. The mole ratio between Zn and ZnCl2 is 1:1. Therefore, if 5.00 moles of Zn react, 5.00 moles of ZnCl2 would be produced.
2. The mole ratio between Zn and HCl is 1:2. Therefore, if 5.00 moles of Zn react, 10.0 moles of HCl would be reacted.
Answer:
5.00 moles of ZnCl2 are produced.
10.00 moles of HCl are reacted.
Explanation:
The balanced chemical equation tells us that 1 mole of Zn reacts with 2 moles of HCl to produce 1 mole of ZnCl2. Therefore, if 5.00 moles of Zn are completely reacted, the same amount of moles of ZnCl2 will be produced, which is also 5.00 moles.
According to the balanced chemical equation, 1 mole of Zn reacts with 2 moles of HCl. Therefore, to react 5.00 moles of Zn, we would need 2 moles of HCl for each mole of Zn. Since we have 5.00 moles of Zn, we would need 2 moles of HCl for each mole of Zn, which totals to 10.00 moles of HCl. So, 10.00 moles of HCl would be reacted.
Related Questions
When a drawing of a circle made in the center of a piece of paper with a black marker gets wet, the marker bleeds, and as the water moves through the paper the ink separates into several colors.
Answers
Answer:
Chromatography
Explanation:
Chromatography is a technique for separating mixtures that involves the use of a moving liquid and filter paper. The solvent travels through the spots on the paper, taking the chemicals away in the opposite direction. If the solvent combination has been properly chosen, each of them will move at a different velocity than the others.
how much energy is needed to convert 120g of ice at -35°C to steam at 150°C?
Answers
what is the bond order for a second-period diatomic particle containing five electrons in antibonding molecular orbitals and eight electrons in bonding molecular orbitals?
Answers
The bond order for a second-period diatomic particle containing five electrons in antibonding molecular orbitals and eight electrons in bonding molecular orbitals is 1.5
Bond order is defined as the number of electrons in bonding molecular orbitals minus the number of electrons in antibonding molecular orbitals divided by two. As a result, we may determine the bond order of this diatomic particle by the formula: Bond order = (number of bonding electrons - number of antibonding electrons) / 2
Bond order = (8 - 5) / 2
Bond order = 1.5.
This diatomic molecule, according to the bond order, is a stable molecule since the bond order is greater than 1, indicating that it is a double bond. The molecule has an overall bond strength that is greater than a single bond, but not as strong as a triple bond. So therefore he bond order for a second-period diatomic particle containing five electrons in antibonding molecular orbitals and eight electrons in bonding molecular orbitals is 1.5
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Calculate the molarity of a solution that contains 0.75 moles of lithium fluoride, LiF, in a 65 mL solution.
Answers
The molarity (M) of a solution is 11.5 M that contains 0.75 moles of lithium fluoride, LiF in a 65 ml of solution.
What is Molarity ?Molarity (M) is defined as the number of moles of solute dissolved in 1L of solution. Molarity is also known as Molar concentration. The S.I Unit of Molarity is molar (M) or mol/L.
How to find molarity of a solution ?Molarity (M) = \(\frac{\text{Number of moles of solute}}{\text{Volume of solution (in liters)}}\)
From the above definition it is clear that the volume of solution is in liter. In question the volume of solution is given in ml.
So, convert 65 ml into l.
65 ml = \(\frac{65}{1000}\) = 0.065 l
Now, put the values in above formula, we get that
(M) = \(\frac{0.75}{0.065}\) = 11.5 M
Thus, the molarity of a solution is 11.5 M that contains 0.75 moles of lithium fluoride, LiF in a 65 ml of solution.
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how long does it take for carbon monoxide to dissipate?
Answers
Answer:The half-life of carboxyhemoglobin in fresh air is approximately 4 hours. To completely flush the carbon monoxide from the body requires several hours, valuable time when additional damage can occur.
Symptoms: Dizziness; Unconsciousness; Confusion...
Explanation:
A researcher is measuring changes in the density of the upper atmosphere over time. Which units should be used for the density measurements?
Answers
Answer:
lbm/ft³ or psi/ft
Explanation:
The description in the question shows the density to measured is that of gases (upper atmosphere). The density of a gas can be described as the mass of the gas divided by the volume of the gas at a certain temperature and pressure. It's unit can be represented as lbm/ft³ or psi/ft.
NOTE:
"lbm" means "lean body mass" which is a unit for mass or weight and can be described as the pound mass
"psi" means "pound per square inch"; is also a unit for mass or weight
Which fraction contains the largest molecules?
A) diesel
B)gasoline
C)kerosene?
Answers
pls help help help!
i give 20 points
pls
Answers
Answer:
His name is Harold
Explanation:
Which is the correct name for p2o5? phosphorus dioxide phosphorus pentoxide diphosphorus pentoxide diphosphorus hexaoxide
Answers
Correct option:
The correct name for \(P_{2}O_{5}\) is diphosphorus pentoxide.
Why \(P_{2}O_{5}\) is called diphosphorus pentoxide?
\(P_{2}O_{5}\) is commonly known as diphosphorus pentoxide.
Phosphorus pentoxide has an intriguing property in that \(P_{2}O_{5}\) is actually its empirical formula, whereas \(P_{4}O_{10}\) is its actual molecular formula.
However, the name of the chemical was obtained from its empirical formula rather than from its molecular formula. The official name for this substance is diphosphorus pentoxide.
Oxygen-containing binary compounds have "oxide" as their "last name." Phosphorus is the "first name."
We list each atom's numbers below:
The di- and Penta- prefixes are used to indicate the presence of two and five oxygen atoms, respectively, in the molecule.
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Answer:
diphosphorus pentoxide
Explanation:
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. What combination of carbonyl compound and phosphorus ylide could you use to prepare the following alkenes? a) ch3ch2ch(ch3)ch=chch3 b) (ch3)2c=chc6h5
Answers
a) To prepare the alkene \(CH_3CH_2CH\)(\(CH_3\))CH=\(CHCH_3\), one could use the Wittig reaction with a phosphorus ylide derived from methyl triphenylphosphonium bromide and butanal.
b) To prepare the alkene (\(CH_3\))2C=\(CHC_6H_5\), one could use the Wittig reaction with a phosphorus ylide derived from methyl triphenylphosphonium bromide and benzaldehyde.
An alkene is a type of organic molecule that contains a carbon-carbon double bond. Alkenes are unsaturated hydrocarbons, meaning that they have fewer hydrogen atoms than their corresponding alkane counterparts. The double bond in an alkene consists of a sigma bond and a pi bond, and the pi bond is responsible for the characteristic reactivity of alkenes.
Alkenes are important in organic chemistry because they can participate in a variety of reactions, such as addition reactions, elimination reactions, and oxidation reactions. Addition reactions involve the addition of a molecule to the double bond, while elimination reactions involve the removal of atoms or groups of atoms from the molecule. Oxidation reactions involve the addition of oxygen atoms to the molecule, which can change its properties and reactivity.
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What measures are being taken to minimize the threat of green iguana?
Answers
Answer:
use wire nettings
Explanation:
and cages
Jenna took an open bowl of leftover mashed potatoes from the refrigerator and noticed a difference in smell. She determined that chemical changes occurred since the potatoes were first placed there.
Which observations most likely led to Jenna’s conclusion?
Answers
Answer:
The change in smell
Explanation:
chemical reactions ccan lead to change in temperature, change in color and also change in smell
Explain the equilibrium law as it relates to chemical equilibrium. Describe the types of stresses that cause chemical reactions in equilibrium to make more products.
Answers
When a reaction has reached equilibrium with a given set of conditions, if the conditions are not changed, the reaction will remain at equilibrium forever. The forward and reverse reactions continue at the same equal and opposite rates and the macroscopic properties remain constant.
It is possible, however, to disturb that equilibrium by changing conditions. For example, you could increase the concentration of one of the products, or decrease the concentration of one of the reactants, or change the temperature. When a change of this type is made within a reaction at equilibrium, the reaction is no longer in equilibrium. When you alter something in a reaction at equilibrium, chemists say that you put stress on the equilibrium. When this occurs, the reaction will no longer be in equilibrium and the reaction itself will begin changing the concentrations of reactants and products until the reaction comes to a new position of equilibrium. How a reaction will change when a stress is applied can be explained and predicted. That is the topic of this section.
at a given temperature, different liquids will have different equilibrium vapor pressures because
Answers
At a given temperature, different liquids will have different equilibrium vapor pressures because the vapor pressure of a liquid depends on its intermolecular forces, molecular weight, and temperature. The equilibrium vapor pressure is a measure of the tendency of a liquid to evaporate and become a gas at a specific temperature.
Intermolecular forces, such as hydrogen bonding or London dispersion forces, play a significant role in determining the strength of attractions between molecules in a liquid. Liquids with stronger intermolecular forces will have lower vapor pressures because it requires more energy to overcome these forces and transition into the gas phase.
Molecular weight also influences vapor pressure. Generally, liquids with larger and heavier molecules will have lower vapor pressures compared to liquids with smaller and lighter molecules. This is because larger molecules have stronger intermolecular forces and require more energy to transition into the gas phase.
Furthermore, temperature affects the vapor pressure of a liquid. As the temperature increases, the average kinetic energy of the liquid molecules increases, resulting in more molecules with sufficient energy to overcome intermolecular forces and transition into the gas phase. Therefore, at higher temperatures, the vapor pressure of a liquid increases.
In summary, the equilibrium vapor pressure of a liquid is determined by the interplay of intermolecular forces, molecular weight, and temperature. Different liquids with varying intermolecular forces and molecular weights will exhibit different equilibrium vapor pressures at the same temperature.
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Suppose a teaspoon of magnesium filings and a teaspoon of powdered sulfur are placed together in a metal beaker. Would this constitute a mixture or a pure substance? Suppose the magnesium filings and sulfur are heated so that they react with each other, forming magnesium sulfide. Would this still be a “mixture”? Why or why not?
Answers
1) When the powdered sulfur are placed together in a metal beaker, the both are examples of pure substances
2) When the both substances are heated such that magnesium sulfide is formed, it is no more a mixture but a compound.
What is a mixture?The term mixture has to do with a combination of two or more substances that are not chemically combined together. Let us note that a mixture would always retain the properties of the individual substances that do make up the mixture as it were.
When the components of a mixture react chemically then it is no more a mixture because a chemicals bond now exists between the substances and they can no more be separated by means of a physical method.
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2C8H18 (1) + 2502 (g) --> 16CO2 (g) + 18H2O (g)
The above reaction is the reaction for gasoline (C8H18) in a typical internal combustion
engine. How many grams of carbon dioxide are produced from 311.9 grams of gasoline?
please hurry time limit
Answers
Answer:
One gallon of octane produces approximately 7000 L of carbon dioxide.
Note:
I believe that the mass of octane should have been given as 2661 g. However, I understand that your instructor probably gave you this problem, so I will use 4000 g for the approximate mass of one gallon of octane. You can rework the problem on your own, substituting the correct masses of octane if you wish.
Step1. You must first determine the number of moles that are in 4000 g of octane, using the molar mass of octane. Step 2. Then you must determine the number of moles of carbon dioxide that can be produced by that number of moles of octane, based on the mole ratio between octane and carbon dioxide in the balanced equation. Step 3. Then use the ideal gas law to determine the volume in liters of carbon dioxide that can be formed.
2 moles of sodium phosphate reacts with 3 moles of
calcium chloride
2Na3PO4 + 3 CaCl2 -> 6 NaCl + Ca2 (PO4)2
using the chemical equation above, how many moles
of NaCl can be produced if one of these is a limiting
reactant?
Answers
Answer: 6 moles of NaCl are produced when 2 moles of sodium phosphate reacts with 3 moles of calcium chloride
Explanation:
The balanced chemical equation is:
\(2Na_3PO_4+3CaCl_2\rightarrow 6NaCl+Ca_3(PO_4)_2\)
According to stoichiometry :
2 moles of \(Na_3PO_4\) require 3 moles of \(CaCl_2\)
Thus both are limiting reagent as both will limit the formation of product.
As 2 moles of \(Na_3PO_4\) reacts with 3 moles of \(CaCl_2\) give = 6 moles of \(NaCl\)
Thus 6 moles of NaCl are produced when 2 moles of sodium phosphate reacts with 3 moles of calcium chloride
A solution of iodine, which is dark brown, added to a solution of sodium bromide. What will be the color of the resulting solution
Answers
\(\huge\bold{ANSWER:}\)
brown-purple color── ── ── ── ── ── ── ── ── ── ──The oxidation potential of the halogens increases in the order I<Br<Cl<F, which means that if you have a solution of iodide ions and add bromine, the iodide will be oxidized to iodine, and the bromines reduced to bromides:
2 I(-) + Br2 → 2 Br(-) + I2
In the same way, two Br(-) will lose their electronsto a chlorine molecule, and the chlorides formed are going to lose their electrons if confronted with a fluorine molecule. This means that the opposite to the above reaction, i. e.
I2 + 2 Br(-) → no reaction
the brown-purple color of the iodine solution, when mixed with a colorless solution of bromide ions (from sodium bromide) will remain purple-brown, perhaps paler because of the dilution (a physical effect) which comes from mixing of two solutions but not because of any chemical reaction.
── ── ── ── ── ── ── ── ── ── ──I Hope you like my answer
Thank you:)
what are the benefits of a lilac bonnet?
Answers
Answer:
Maintains natural hair moisture.
Prevents hair frizz.
Reduces hair breakage & tangles.
Longer lasting hair styles.
Explanation:
The change in speed that could occur in 4 seconds in an object with an acceleration of 6 m/s/s.
Answers
Answer:
24m/s
Explanation:
a=change of v/change of t
6m/s^2=v/4s
multiply both sides by 4s
v=24m/s
Question 23
Marks: 1
The rate at which atoms of radioactive sources (radionuclides) disintegrate are measured in
Choose one answer.
a. rems
b. rods
c. curies
d. roentgens
Answers
The rate at which atoms of radioactive sources, or radionuclides, disintegrate is measured in curies. A curie is a unit of measure for the amount of radioactive material present. It represents the amount of radioactive material in which 37 billion atoms disintegrate per second.
The disintegration of radionuclides produces ionizing radiation, which can be measured in rems or roentgens.
A rem is a unit of measurement for the amount of ionizing radiation absorbed by living tissue, while a roentgen is a unit of measurement for the amount of ionizing radiation in the air.
In summary, the rate at which atoms of radioactive sources disintegrate is measured in curies, while the amount of ionizing radiation produced by the disintegration can be measured in rems or roentgens. It is important to understand these units of measurement in order to properly monitor and regulate exposure to ionizing radiation, as it can have harmful effects on living organisms.
The rate at which atoms of radioactive sources (radionuclides) disintegrate is measured in curies (c).
To explain further, radioactive sources contain unstable atoms, called radionuclides. These radionuclides undergo disintegration or decay, during which they emit radiation. To quantify this process, we use various units.
Curies (Ci) is a unit of measurement specifically used to express the activity of a radioactive substance, or how quickly atoms in the radioactive source are disintegrating. One curie represents 37 billion disintegrations per second.
It's important to note the other units you mentioned:
- Rems (roentgen equivalent in man) is a unit used to measure the biological impact of ionizing radiation on human tissue.
- Roentgens (R) is a unit used to measure the exposure to ionizing radiation, specifically the amount of radiation that produces a certain amount of ionization in air.
- Rods is not a unit related to radioactivity, but might be confused with control rods, which are used in nuclear reactors to control the rate of nuclear reactions.
In summary, the appropriate unit for measuring the rate at which atoms of radioactive sources disintegrate is curies.
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calculate the concentration of hydronium ions h3o in a sample of acid rain that has a ph value of 4.6.
Answers
The concentration of hydronium ions h3o is 2.51 × 10⁻⁵ mol/L. when a sample of acid rain has a ph value of 4.6.
The concentration of a solution represents the percentage of the solute dissolved in the solution. We can calculate the concentration of a solution using this formula:
Concentration = Volume (or Mass) of solute x 100/ Volume (Mass) of solution (ml).
Given data:
pH = 4.6
We have to find the Hydronium ion concentration. we can find it by using Formula,
pH = - log[H₃O⁺]
[H₃O⁺] = 10^-pH
Now we will put the values of pH in the formula.
[H₃O⁺] = \(10^- 4.6\)
[H₃O⁺] = 2.51 × 10⁻⁵ mol/L
Therefore, the concentration of hydronium ions is 2.51 × 10⁻⁵ mol/L.
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6. ( i’ll award the brainliest and any “links” will be reported)
sodium metal reacts with water and produces aqueous sodium hydroxide and hydrogen gas
a. Translate the word equation, and write the complete and balanced chemical equation.
b. What volume of hydrogen gas can be produced from reacting 5.67 grams of sodium metal with excess
water?
C. What is the percent yield if 964.00 mL of H, are collected through experimentation?
Answers
Answer: 2Na+2H2O------>2NaOH+H2
b) From the equation two moles of sodium gave one mole of hydrogen.
At stp the volume of hydrogen is 22400cm3.
The molar mass of sodium is 23
So we have
2molesNa--->1moleH2
5.76moles--->? mole H2
Meaning
2(23)Na----> 22400cm3 ofH2
5.67Na---->?H2
22400×5.67÷ 2(23)
127008÷46=2761.04cm3
Sorry I can't do the last one.
the temperature of gas is raised by 100 deggres to 200 deggres. what happens to the volume of the gas
Answers
Answer:
Increases by 100 Pa
Explanation:
According to The Ideal Gas Equation,
the temperature of the gas is directly proportional to the volume of the gas present in itIf the temperature rises from 100 K to 200 K, then the volume will increase by 100 Pa (standard unit of Pressure)3
A student has a 5. 00 gram sample of calcium chloride (CaCl2) solid. How many moles of calcium chloride are
contained in this sample?
Answers
The number of moles of calcium chloride ( CaCl₂) are contained in the given sample is 0.045 moles.
Given that :
The mass of the calcium chloride, CaCl₂ = 5 g
The molar mass of the calcium chloride, CaCl₂ = 110.98 g /mol
The number of moles can be calculated by the formula given below :
The number of moles = mass / molar mass
where,
Mass = 5 g
Molar mass = 119.98 g/mol
The number of moles = 5 g / 110.98 g /mol
The number of moles = 0.045 moles.
The moles of the calcium chloride , CaCl₂ is 0.045 mol.
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a substance that is composed of two or more elements or compounds that are not chemically combined
Answers
Substance that is composed of two or more elements or compounds that are not chemically combined is called mixture.
A material system known as a mixture is composed of two or more separate components that are joined physically but not chemically. When two or more substances are physically combined, their identities are maintained, and the mixture takes the shape of solutions, suspensions, or colloids.Homogeneous and heterogeneous mixtures are the two basic categories of mixtures.Heterogeneous mixtures have varying compositions and qualities throughout, meaning that the mixture's characteristics are not constant.A homogenous mixture is one that shares the same characteristics and composition across its mass.For example, the elements in the food we eat, the gases in the air we breathe, and the fuel we use in trains are all mixtures.Learn more about mixture here:
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What kind of bonding holds together
the atoms in a sample of pure zinc
Answers
Answer:
Metallic Bonding
Explanation:
Zinc is a metal, as such it's atoms are held together by the metallic bond. Metallic bond is a type of chemical bond formed between positively charged ions in which there is a collective sharing of a sea of valence electrons.
Can lead ii carbonate conduct electricity? Explain your answer
Answers
Solid Lead II carbonate can not conduct electricity because it is insoluble in water.
First of all, we must establish the fact that ionic solids conduct electricity in solution because they can be broken up into ions in solution.
In the solid state, they do not conduct electricity because the ions are strongly bound by electrostatic forces.
However, if an ionic substance is insoluble in water, its ions are not available to conduct electricity since ions are the charge carrier in solution. As a result of this, such a substance will not conduct electricity.
Since Lead II carbonate is insoluble in water, its ions are not available hence the substance does not conduct electricity.
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What does the atomic mass of an element represent?
Answers
Answer: the total number of protons and neutrons in an atom
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