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1. 2HCl(aq) + Zn(s)→ H₂(g) + ZnCl₂(aq)
You have 100. mL of a .300 M solution of HCI. As the reaction occurs, the volume of solution is unchanged.
1. How many grams of Zn were used up?
2. How many liters of hydrogen gas at STP were formed?
3. What is the molar concentration of the zinc chloride formed?
k
Answers
The number of grams of Zinc used is 1962g, the volume of hydrogen gas formed at STP is 672.071L and the molar concentration of Zinc Chloride is 300M.
1. The number of moles of Zn used up is given by the equation:
n = CV
Since the volume is given in mL, we must convert it to L before plugging it into the equation.
n = (300 mol/L)(100 mL)(1 L/1000 mL)
n = 30 mol
The molar mass of Zn is 65.39 g/mol, so the number of grams of Zn used up is given by:
m = nM
m = (30 mol)(65.39 g/mol)
m = 1962 g
2. The number of moles of H₂ formed is also 30 mol. One mole of any gas occupies 22.4 L at STP, so the number of liters of H₂ formed is given by:
V = nRT/P
V = (30mol)(0.08206 L•atm/mol•K)(273 K)/(1 atm)
V = 672.071 L
The volume of liters of H2 formed is 0.6L
3. The molar concentration of ZnCl₂ is given by the equation:
C = n/V
Here, number of moles is n and the volume is V The number of moles of ZnCl₂ is 30 mol, and the volume is 100 mL, so the molar concentration is:
C = (30 mol)/(0.1L)
C = 300 M
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Related Questions
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In stereochemistry, stereoisomerism, or spatial isomerism, is a form of isomerism wherein molecules have an equal molecular method and series of bonded atoms, however, fluctuate inside the 3-dimensional orientations in their atoms in area.
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Give the structure of the product formed when 2−methyl−1−butene reacts with bromine in water.
Answers
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Diamond has a similar structure to silicon dioxide. How many covalent bonds does each carbon
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Answers
Answer:
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Explanation:
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In exothermic reactions, more energy is launched while the bonds are shaped in the goods that are used to interrupt the bonds inside the reactants. Exothermic reactions are observed with the aid of a boom in the temperature of the reaction combination. If materials react and the temperature of the aggregate will increase, the reaction is exothermic.
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In naming a binary molecular compound,the number of atoms of each element present in the molecular is indicated by?
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Write the reaction showing the decay of Mn-56
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Hope this helps:)
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Answers
It is a dissociative substitution process.
Write the reaction mechanism
Step 1:
Ni(CO)₄ → Ni(CO)₃ + CO
Step 2:
Ni(CO)₃ + CO + L → [Ni(CO)₃L
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What is the name of the compound with the formula PI3 ?
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Answer:
im pretty sure its Phosphorus triiodide
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Answers
The electron configuration for the following ions using full electronic configuration method is :
a) Li⁺ = 1s²
b) V²⁺ = 1s² 2s² 2p⁶ 3s² 3p⁶ 3d³
1) the electronic configuration of Li , the full for , the atomic number is 3 is :
Li = 1s² 2s¹
Li⁺ means one electrons is remove from the last shell.
Li⁺ = 1s²
b) the electronic configuration of Vanadium with atomic number 23 is :
V = 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d³
V²⁺ means 2 electrons are remove from the last shell of the atom.
V²⁺ = 1s² 2s² 2p⁶ 3s² 3p⁶ 3d³
Thus, The electron configuration for the following ions using full electronic configuration method is :
a) Li⁺ = 1s²
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Answers
Answer:
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Explanation:
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Answers
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For the following balanced equation, which has the highest coefficient?
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Answers
H2 has the highest coefficient.
Considering a balanced equation,
4 H2+2 C
————>2 CH4
=> The hydrogen molecule's (H2) coefficient is 4.
=> The carbon (C) coefficient is 2.
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Answers
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how many single covalent bonds must a chlorine atom form to have a complete octet in its valence shell?
Answers
Answer:
Chlorine only needs to make one covalent bond. It has seven e- so it needs one more to make a full octet.
Explanation:
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Answers
Balanced equations for the following reactions along with the states are:
Zn (s) + 2 HCl (aq) ZnCl₂ (aq) + H₂ ( g)
Sn (s) + PbSO₄ (s) → Pb (s) + SnSO₄ (s)
a. Chemical equation
Zn (s) + HCl (aq) → ZnCl₂ (aq) + H₂ ( g)
Balanced chemical equation
Zn (s) + 2 HCl (aq) ZnCl₂ (aq) + H₂ ( g)
b. Chemical equation
Sn (s) + PbSO₄ (s) → Pb (s) + SnSO₄ (s)
Balanced chemical equation
Sn (s) + PbSO₄ (s) → Pb (s) + SnSO₄ (s)
c. Chemical equation
Mg (s) + Cu(NO₃)₂ (aq) → Mg(NO₃)₂ (aq) + Cu (s)
Balanced chemical equation
Mg (s) + Cu(NO₃)₂ (aq) → Mg(NO₃)₂ (aq) + Cu (s)
d. Chemical equation
Ag (s) + H₂SO₄ (aq) → Ag₂SO₄ (aq) + H₂ ( g)
Balanced chemical equation
2 Ag (s) + H₂SO₄ (aq) → Ag₂SO₄ (aq) + H₂ ( g)
e. Chemical equation
Fe (s) + H₃PO₄ (aq) → Fe₃(PO₄)₂ (aq) + H₂ ( g)
Balanced chemical equation
3 Fe (s) + 2 H₃PO₄ (aq) → Fe₃(PO₄)₂ (aq) + 3 H₂ ( g)
f. Chemical equation
Pb (s) + CH₃COOH (aq) → Pb(CH₃COO)₂ (s) + H₂ ( g)
Balanced chemical equation
Pb (s) + 2 CH₃COOH (aq) → Pb(CH₃COO)₂ (s) + H₂ ( g)
(Complete question)
write the equations for the following reactions. Make sure to balance the equation and include the states. a.) zinc metal and hydrochloric acid b) tin metal and lead sulfate c) magnesium metal and copper nitrate d)silver metal and sulfuric acid e) iron metal and phosphoric acid f) lead metal and acetic acid.
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predict the charge that an aluminum ion would have. question 10 options: a) 1 b) 5- c) 2 d) 3 e) 1-
Answers
An aluminum ion will have +3 charge.
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In the nineteenth century, this material became both less costly and more widely available for construction.
a. glass
b. iron
c. concrete
d. steel
e. all of the other answers
Answers
In the nineteenth century, this material became both less costly and more widely available for construction all of the other answers. Option E.
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Set-up art is one of the most effective and immersive of all artwork paperwork. In comparison with conventional mediums along with painting and sculpture, set-up artwork is designed to fill complete rooms or maybe whole gallery spaces. however, it become the Romans who created a rigid stable structure that didn't need any external buttresses or help.
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what is the relationship between the kinetic energy of particles and the forces of attraction between particles
Answers
The relationship between the kinetic energy of particles and the forces of attraction between particles is that if average kinetic energy increases than the force of attraction then particles will not condensed to form liquid or solid.
If the kinetic energy less than force of attraction between the particle then the particles will tends to form solid or liquid. the kinetic energy is directly proportional to distance between the particles. The distance between the particles is inversely proportional to the intermolecular forces.
Thus, The relationship between the kinetic energy of particles and the forces of attraction between particles is that if average kinetic energy increases than the force of attraction then particles will not condensed to form liquid or solid.
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Write a thermochemical equation for the combution of ethanol (C 2 H 5 OH).
∆Hcomb = -1367 kJ/mol
Answers
Thermochemical C2H5OH(l) + 3 O2(g) → 2 CO2(g) + 3 H2O(l) ΔHcomb = -1367 kJ/mol
What is Thermochemistry?
The study of thermochemistry examines the heat energy involved in chemical reactions and/or phase transitions like melting and boiling. Energy can be released or absorbed during a reaction or phase change. Thermochemistry focuses on the heat-based energy transfer between a system and its surroundings. In order to forecast the quantities of reactants and products throughout a specific reaction, thermochemistry is helpful. It is also used to foretell whether a reaction will be spontaneous or non-spontaneous, favourable or unfavourable, in conjunction with entropy determinations. While exothermic reactions discharge heat, endothermic reactions absorb heat. The concepts of thermodynamics and the idea of energy in form of chemical bonds are combined in the field of thermochemistry.
Thermochemical is the relation between heat ,work, temperature and energy.
We can only use the energy quality when it's high,
It means that heat easily cover when the gallon is burn.
The energy of the fuel has ready converted into heat .
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if 4 ml of 0.0250 m cuso4 is diluted to 10.0 ml iwth pure water, what isthe molarity of copper ii sulfate in the diluted soltuion
Answers
The molarity of copper sulfate in the diluted solution if 4 ml of 0.0250 m cuso4 is diluted to 10.0 ml with pure water is 0.02M.
What is Molarity?Molarity is defined as the ratio of moles of solute to the volume of solution.
Mathematically,
Molarity = moles of solute / volume of solution
Step 1 : Calculation of molesGiven,
Initial volume of CuSO4 = 4 ml = 4/1000 = 0.004 l
Molarity of CuSO4 = 0.0250 m
By substituting all the values, we get
0.025 = moles/ 0.004
moles = 0.025 × 0.004 = 0.000100 mol
Moles = 0.0001 mol.
Step 2 : Calculation of molarity of final volumeTotal volume = 0.004 l + 10 ml
= 0.004 + 0.001 = 0.005 l
Moles of CuSO4 = 0.0001 mol
Molarity = 0.0001 / 0.005 = 0.02 M
Thus, we concluded that the molarity of copper sulfate in the diluted solution if 4 ml of 0.0250 m cuso4 is diluted to 10.0 ml with pure water is 0.02M.
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for the following reaction, 6.47 grams of chlorine gas are mixed with excess sodium iodide. the reaction yields 7.11 grams of sodium chloride. chlorine (g) sodium iodide (s) sodium chloride (s) iodine (s) what is the theoretical yield of sodium chloride ? grams what is the percent yield of sodium chloride ?
Answers
5.323 gm is the theoretical yield and 133.5 is the percentage yield .
What is chemical reaction ?
Chemical reaction is a process in which one or more substances are transformed into one or more other substances (products). Substances are either chemical elements or compounds. Chemical reactions rearrange the constituent atoms of reactants to produce different substances as products.
Chemical reactions are an integral part of technology, culture, and even life itself. Fuel combustion, iron smelting, glass and pottery making, beer brewing, and wine and cheese making are just a few examples. Activities involving chemical reactions that have been around for thousands of years. Chemical reactions are more in a variety of processes occurring in the Earth's geology, atmosphere and oceans, and in all biological systems.
Cl2 is limiting reagent , moles of cl2 = 0.091
moles of NaCl = 0.121
Theoretical yield of NaCl will be 0.091 moles = 0.091 moles X 58.5 g/mole = 5.3235 g
percentage yield = (7.11/5.3235) X 100 = 133 %
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suppose you need to prepare 120.4 ml of a 0.183 m aqueous solution of nacl. what mass, in grams, of nacl do you need to use to make the solution?
Answers
The mass of NaCl required ( in grams) to make the aqueous solution is 1.287 g.
What is molecular mass? How do you calculate molecular mass?
A molecule's mass is the sum of the masses of all the atoms it contains. As it is the total mass of all the atoms in a molecule, it is calculated below
The molecular mass of NaCl = Atomic mass of Na + Atomic mass of Cl
= 23 + 35.5
= 58.5g/mol
Given the volume of aqueous solution = 120.4 ml or 0.1204 L
Molarity of solution = 0.183M
We know that,
Molarity = No. of moles/Volume
No. of moles = 0.183 × 0.1204
= 0.022 moThe molar.
Molar mass of NaCl = Mass of Na + Mass of Cl
= 23 + 35.5
= 58.5g/mol
Mass of NaCl = 0.022 × 58.5
= 1.287 g
So, the mass of NaCl required ( in grams) to make the aqueous solution is 1.287 g.
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WILL MARK BRAINLIEST! 50 points! Can someone pls explain fully balancing chemical equations and how to do it. I’m so confused and I have a test on Friday.
Answers
Answer:
When you balance a chemical equation, you change (!!YOU MUST CHANGE IT DO NOT FORGET!!) coefficients. You never change subscripts. A coefficient is a whole number multiplier. To balance a chemical equation, you add these whole number multipliers (otherwise known as coefficients) to make sure that there are the same number of atoms on each side of the arrow.
For those of you who may not have a clear understand of what a coefficient is, here's a simple definition that you can look at. A coefficient can be simply explained a number or symbol by which another number or symbol (as a mathematical variable) is multiplied.
Also, here's a simple definition of a subscript! A subscript is a distinguishing symbol (such as a LETTER OR NUMERAL) written immediately above or below and to the right or left of another character.
Here's an example.
The equation that were trying to solve is:
Zn + 2HCl ---> ZnCl^2 + H^2
Answer:
There are two chlorines on the right but only one on the left, and the chlorine is in a single chemical species on each side. Put a 2 in front of the HCl on the left hand side.
Zn + 2HCl ---> ZnCl^2 + H^2
And if you look carefully, you will see that the equation is now balanced, with one Zn on each side, two hydrogens on each side and two chlorines on each side. Some examples can be rather easy!
Explanation:
Like always, don't have a good day, have a great day!
if 45.3 ml of a 0.108 m hcl solution is needed to neutralize a solution of koh, how many grams of koh must be present in the solution?
Answers
If 45.3 ml of a 0.108 M HCL solution is needed to neutralize a solution of KOH, then grams of KOH that must be present in the solution is 0.274gm.
What is molarity?The amount of a substance present in a certain volume of solution is termed as molarity . It can also be defined as the moles of a solute per liter of solution.
HCL +KOH ---> KCL+ H2O
Molarity= mol solute / L solution
Given volume of HCL= 45.3ml= 0.0453L
concentration = 0.108M
As we know that, No. of moles = concentration * Volume
=0.0453* 0.108
Number of moles=0.0048
Mass = no. of moles*molar mass
Molar mass of KOH = 56.1 g/mol
= 0.00489* 56.1
Grams of KOH= 0.274 gm.
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Which resource is a nonrenewable resource?
Responses
nuclear energy
nuclear energy
lumber
lumber
water power
water power
solar energy
solar energy
Answers
Nuclear energy is a nonrenewable resource, renewable energy refers to energy from sources that are constantly replenished - like the water for hydroelectric dams that is topped up by the rain (option number 3), or the sunlight that reappears every day for solar panels (Orion number 4). Wood is a renewable resource, which means that additional resources can be grown to replace any wood that is cut down (option number 1). Because nuclear power uses up radioactive fuel, it is not renewable in the same way.
*it’s still debatable whether nuclear energy is a renewable energy or not (most believe it is) but I believe in this question it’s the right answer.
Complete the mechanism for the acid‑catalyzed alcoholysis of the epoxide by adding any missing atoms, bonds, charges, nonbonding electrons, and curved arrows.
Answers
The lone pair electron in alcohol undergoes protonation and stabilizes the cation that is present in the oxygen atom. The final product contains both the ether and alcohol functional groups.
The chemical element with the letters O and the atomic number 8 is called oxygen atoms. It belongs to the chalcogen group of the periodic table and is a highly reactive nonmetal that readily forms oxides with most elements as well as with other compounds. Chemical elements, or substances with only one sort of atom, include molecular oxygen. An oxygen atom has eight protons in its nucleus, as indicated by its atomic number of 8 and the official chemical symbol O. The manufacture of steel, plastics, and textiles, brazing, welding, and cutting of steel and other metals, rocket propellant, oxygen therapy, and life support systems in aircraft, submarines, spaceflight, and diving are just a few common uses for oxygen. Since many organisms use molecular oxygen for respiration, molecular oxygen is necessary for life.
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compare the elements na, b, al, and c with regard to the following property: which has the largest (most positive) ionization energy?
Answers
The increasing ionization energy order is Na< Al < B < C.
The ionization energy decreases in groups from top to bottom and increases over time from left to right. Therefore, helium has the highest initial ionization energy and francium has the lowest one. The ionization energy increases because the ratio of protons to electrons increases.
The higher the ionization energy the more difficult it is to remove an electron. Therefore, ionization energy is a measure of reactivity. Ionization energy is important because it can be used to predict the strength of chemical bonds. The process by which electrically neutral atoms or molecules are transformed into charged atoms or molecules by gaining or losing electrons.
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