Stoichmetric calculations must not be based on the limiting reagent
true or false
Answer:
Ture
Explanation:
Ture
True
True
True
Newtons law of motion
help meeeeeeeeeeeeee
Answer:
XCl₂ + 2AgNO₃ —> X(NO₃)₂ + 2AgCl
The coefficients are: 1, 2, 1, 2
Explanation:
XCl₂ + AgNO₃ —> X(NO₃)₂ + AgCl
The equation can be balance as follow:
XCl₂ + AgNO₃ —> X(NO₃)₂ + AgCl
There are 2 atoms of Cl on the left side and 1 atom on the right side. It can be balance by writing 2 before AgCl as shown below:
XCl₂ + AgNO₃ —> X(NO₃)₂ + 2AgCl
There are 2 atoms of Ag on the right side and 1 atom on the left side. It can be balance by writing 2 before AgNO₃ as shown below:
XCl₂ + 2AgNO₃ —> X(NO₃)₂ + 2AgCl
Now, the equation is balanced.
The coefficients are: 1, 2, 1, 2
How are plate tectonics and the rock cycle connected
Answer:
All igneous rocks the basis of the rock cycle are formed by plate tectonics. ... The heat from the mantle that fuels plate tectonics causes both igneous and sedimentary rocks to be turned into metamorphic rocks. The metamorphic rocks can be eroded into sedimentary rocks are remelted back into igneous.
Explanation:
2KClO₃ → 2KCl + 3O₂ If 25.0 g of KClO₃ decompose, what mass of O₂ will form? *
Answer: approximately 15.1 grams.
Explanation: The key to chemistry is to change everything to moles. Then when you have the answer in moles change the answer back to grams, liters, or whatever you want. Change 25 grams of potassium chlorate to moles. Chlorate is Cl with 3 oxygens. ate = saturated. Chlorine has seven valance electrons when it is saturated six of these electrons are used by oxygen ( 2 electrons per oxygen) leaving only 1 electron. 1 K x 39 grams/mole+1 Cl x 35.4grams/ mole+3 O x 16 grams/ mole = 122.4 grams / mole Potassium Chlorate 25 122.4 = moles. 2.05 moles of Potassium Chlorate. There is a 1:1 mole ratio. 1 mole of Potassium Chlorate will produce 1 mole of Potassium Chloride. 2.05 moles of Potassium Chlorate will produce 2.05 moles of Potassium Chloride. Find the gram molecular mass of Potassium Chloride. 1 K x 39 = 39+1 Cl x 35.4 = 35.4 = 74.4 grams / mole. 2.05 moles x 74.4 grams/ mole = 15.2 grams
The mass of O₂ that will be form is 9.8 grams
The chemical reaction is as follows:
2KClO₃ → 2KCl + 3O₂
From the reaction 2 moles of potassium trichlorate decompose to form 2 moles of potassium chloride and 3 moles of oxygen.
Therefore,
molar mass of KClO₃ = 39 + 35.5 + 48 = 122.5 grams
molar mass of O₂ = 32 grams
Therefore,
2(122.5) g of KClO₃ produces 3(32) grams of O₂
25 g of KClO₃ will produce ? grams of O₂
cross multiply
mass of O₂ produced = 96 × 25 / 245
mass of O₂ produced = 2400 / 245
mass of O₂ produced = 9.7959
mass of O₂ produced ≈ 9.8 grams
learn more: https://brainly.com/question/15568949?referrer=searchResults
What is the molarity of a solution made from dissolving 3.0 moles of Saline (NaCl) in 0.25 L of solution?
Answer: the answer is 12M
Explanation: 3.0mol/ 0.25L =12M
12M is the molarity of a solution made from dissolving 3.0 moles of Saline (NaCl) in 0.25 L of solution.
What is molarity?The amount of molecules of molecules divided by the quantity of liters in solution is the definition of molarity, a concentration unit in chemistry. It is crucial to comprehend how it is calculated as well as when to employ it in comparison to other units because it is among the most widely used concentration units.
A chemical solution's concentration is measured in molarity (M). It refers to the solute's moles per liter of solution. To be clear, this is not the same as the liters of solvents (a common mistake).
molarity = number of moles of solute/ volume of solution in litre
molarity =3.0mol/ 0.25L
=12M
Therefore, 12M is the molarity of a solution made from dissolving 3.0 moles of Saline (NaCl) in 0.25 L of solution.
To know more about molarity, here:
https://brainly.com/question/29884686
#SPJ2
Help ASAP POINTS ARE ADDED !!!!!!due in 3 minutes
Proton:
Positive
Found in Nucleus
Mass of 1 AMU
Neutron:
Neutral
Found in Nucleus
Mass of 1 AMU
Electron:
Negative
Found in orbitals
Mass of 0 AMU
A gray whale can travelan average of 120
km per day as it migrates.
Explanation:
False, gray whales average 75 miles per day at a speed of 5 mph and is the longest annual migration of any mammal.
Answer:
That would be speed.
Explanation:
does lithium violate the octect rule
Answer: Lithium, an alkali metal with three electrons, is also an exception to the octet rule. Lithium tends to lose one electron to take on the electron configuration of the nearest noble gas, helium, leaving it with two valence electrons. There are two ways in which atoms can satisfy the octet rules.
Explanation: Hope this helped! :)
Consider the following reaction occurring in a 1.0 L container:
H2 (g) + I2 (g) → 2 HI (g)
State 2 requirements for a successful collision between H2 and I2.
Answer:
jjjjajwhejwhswjiwiwvssvwvow9qiwgdvdbslw
1. 2.00 L of gas is at 740 mm Hg. What is its volume at standard
pressure?
0.16
Explanation:
when you divided 1.2.00 with 740 you get this number.
4) What mass of hydrogen is formed when 2.00g of magnesium
Mg + H2SO4–>H2SO4
Answer: 0.16 g H2
Explanation:
Mg+ H2SO4= MgSO4 + H2
Atomic massof Mg is 24
Molecular mass of H2 is 2
So,
24g Mg produce 2 g H2
1g Mg produce (2÷24)= 0.083 g H2
2.00g Mg produce (0.083×2) g H2
= 0.16 g H2
0.16g of hydrogen is formed when 2.00g of magnesium.
The mass of hydrogen gas formed when 2.00g of magnesium is equal to 0.165 g.
What is the balanced chemical equation?The chemical equation of a reaction is said to be a balanced equation when the number of atoms of substances is equal on either side of the equation.
Evergy balanced chemical equation must follow the law of conservation of mass according to which the total mass of the substances present on the reactant side should be equal to the total mass of substances present on the product side.
Given, the balanced chemical equation of the reaction of Mg and sulfuric acid:
[tex]Mg + H_2SO_4 \longrightarrow MgSO_4 +H_2[/tex]
One mole of magnesium produces hydrogen gas = 1mol
Given the mass of magnesium = 2g
The number of moles of Mg = 2/24.3 = 0.082 mol
Then the number of moles of hydrogen gas formed = 0.082 mol
The mass of the hydrogen gas = 0.082 × 2 = 0.165 g
Learn more about the balanced chemical equation, here:
brainly.com/question/15052184
#SPJ2
How are beef and gas productions related to methane levels?
Plzzz answer quick
Answer:
Cows and other ruminant animals (like goats and sheep) emit methane, a potent greenhouse gas, as they digest grasses and plants. This process is called “enteric fermentation,” and it's the origin of cows' burps.
Explanation:
Where does the 'Equiv' come from?
Explanation:
Equiv means equivalent ...
Pl help it’s for a grade
Answer: B. Potential energy
Explanation:
There are several form of potential energy including gravitational, magnetic, electrical, chemical and eleastic potential
Answer:
Potential Energy
Explanation:
Potential energy is stored energy and the energy of position.
Chemical, Gravitational, and Elastic are all stored energy and the energy of position.
Hope this helps!
:D
How do I do nunber 8?
Answer:
DONT CLICK THAT LINK THAT IS HACK AND VIRUS
Explanation:
Select the most reactive metal from the options below
Iron
Copper
Zinc
Gold
Answer: Hello, This is my most favorite class so I know this is right.
The most Reactive metal source is Copper.
Explanation:
This is the most reactive because it contains Lithium supplement.
Your Welcome! Mark me as Brainliest! :)
Where is each conversion factor found?
Answer:
Explanation: A conversion factor is a number used to change one set of units to another, by multiplying or dividing. When a conversion is necessary, the appropriate conversion factor to an equal value must be used. For example, to convert inches to feet, the appropriate conversion value is 12 inches equal 1 foot.
Which of the following are parts of the Nervous System?
Choose all the apply
Nerves
Brain
Heart
Skin
Spinal Cord
Lungs
Answer: Nerves, Brain and spinal cord
Explanation:the other choices are either part of the cardiovascular system or the respiratory system
as the temperature in a pressure cooker rose from 383 k to 431 k, the pressure rose to 1.16 atm. what was the original pressure of the cooker? plz name the gas law as well
Answer:
1.031atm
Explanation:
1. Explain where they bury remains at the Forensic Osteological Research Center and why
Answer:
In the middle of the forest.
Explanation:
They have to bury the remains in the middle of the forest at the Forensic Osteological Research Center in order to study the decomposition of the dead person. By studying the decomposition of dead person we can get a lot of information which can be used in the study of criminal cases and solving of crimes. The middle place in the forest is a perfect place to bury the remains due to presence of huge amount of microbes as well as insect that helps in the decomposition.
40 g of NaCl is added to 1500 g of water. What is the molality of the resulting
solution?
Molality = moles of solute/mass (in kg) of solvent
The solute here is NaCl, of which you have 40 g or 40/58.4428 = 0.6844 moles NaCl.
The solvent here is water, of which you have 1500 g or 1.500 kg H2O.
The molality of the resulting solution would thus be 0.6844 moles NaCl/1.500 kg H2O = 0.4562 mol/kg.
If you have to consider sig figs, then your final answer would have one sig fig (40 g has one sig fig). In that case, your final answer would be 0.5 mol/kg.
PLEASE HELP I WILL MARK YOU BRAINLIEST !!If you react 4.25 moles of FeCl2, how many moles of Cl2 did you also react?
PLEASE IM BEGGING FOR HELPPPPP
Answer:
2 FeCl2 + Cl2 -> 2 FeCl3
According to numbers in reaction
Amount of Cl2 is half of FeCl2
Explanation:
Which, if any, of the following is named incorrectly? *
A) FeSO4; iron (II) sulfate
B) Fe(OH)2; iron (III) hydroxide
C) K3P; potassium phosphide
D) Sn3(PO4)4; tin (IV) phosphate
Answer:
I think it is either a or b
Explanation:
c or d has the correct names and Roman numerals.
match each scientist with the description of the appropriate atomic theory
Bohr: Electrons move in circular paths that have different energies.
Thomson: Atoms contain electrons.
Dalton: Matter is made up of indivisible atoms.
Schrodinger and others: Electrons exist in a cloud of probability.
Rutherford: The mass of an atom is concentrated in its center.
Answer:
The screenshot shows all the answers
Explanation:
A Jeweler is making sapphire rings using 2 sapphires on every 1 ring. If the jeweler has 12 sapphires and 10 rings, what is the theoretical yield? (3 points)
O 5 sapphire rings
O 6 sapphire rings
O 10 sapphire rings
O 12 sapphire rings
3 (05 05 LC)
The theoretical yield is 6 sapphire rings.
What is Theoretical yield?This is the total product formed as a result of the complete conversion of
the reactants. In this scenario, the reactant is the 12 sapphires in which 2
of it is needed to produce one sapphire ring.
This however translates to the theoretical yield being 6 sapphire rings
which is gotten by:
2 sapphires = 1 ring
12 sapphires = x
Cross multiply
2x = 12
x= 12/2 = 6 sapphire rings.
Read more about Theoretical yield here https://brainly.com/question/25996347
A rock sample from the moon includes a mineral that contains small amounts of the radioactive isotope Potassium-40 and its daughter element Argon-40 (half-life of 1.3 billion years). This mineral would not form with any Argon-40. Consider a crystal with 7 atoms of Argon-40 for every 1 atom of Potassium-40. How many atoms of Potassium-40 were present when the crystal formed for each atom of Potassium-40 that exists today
Answer:
There were originally 8 atoms of Potassium-40.
Explanation:
The half-life of a radioactive material is the time taken for half the original material to decay or the time required for a quantity of the radioactive substance to reduce to half of its initial value.
If the original material formed without any Argon-40, it means that the atoms originally present were Potassium-40 atoms.
Presently, there are 7 Argon-40 atoms for every 1 of Potassium-40, we can deduce the number of half-lifes the Potassium-40 has undergone as follows :
After one half-life, (1/2) there will be one Potassium-40 atom for every Argon-40 atom.
After a second half life, 1/2 × 1/2 = 1/4: there will be one Potassium-40 atom for every three atoms of Argon-40.
After a third half-life, 1/4 × 1/2 = 1/8: there will be one Potassium-40 atom for every 7 atoms of Argon-40.
Since there are 1/8 atoms of Potassium-40 presently, there were originally 8 atoms of Potassium-40.
4A1 + 302 →
2Al2O3. How many grams of oxygen (O2)
are needed to produce 95 grams of
aluminum oxide (Al2O3)?
Answer: 44.706g Al2O3
Explanation:
4A1 + 302 → 2Al2O3
3×(16×2) 2{(27×2)+(16×3)}
= 96 = 204
So
To produce 204g of Al2O3,We need . 96g of O2
To produce 1g of Al2O3,We need
. (96÷204)= 0.47g of O2
To produce 95g of Al2O3,We need
. (0.47×95)= 44.706g of O2
.
So, 44.706 grams of oxygen (O2)
are needed to produce 95 grams of
aluminum oxide (Al2O3).
Titanium is a transition metal used in many alloys because it is extremely strong and lightweight. Titanium tetrachloride (TiCl4) is extracted from titanium oxide using chlorine and coke (carbon). TiO2(s) + C(s) + 2 Cl2(g) TiCl4(s) + CO2(g) (a) What mass of Cl2 gas is needed to react with 1.60 mol TiO2? g (b) What mass of C is needed to react with 1.60 mol of TiO2? g (c) What is the mass of all the products formed by reaction with 1.60 mol of TiO2? g
Answer:
a) 226.6 grams of Cl₂
b) 19.2 grams of C
c) 303.2 grams of TiCl₄ and 70.4 grams of CO₂
Explanation:
The balanced chemical reaction is the following:
TiO₂(s) + C(s) + 2 Cl₂(g) → TiCl₄(s) + CO₂(g)
(a) What mass of Cl₂ gas is needed to react with 1.60 mol TiO₂?
From the chemical equation, 1 mol of TiO₂ reacts with 2 moles of Cl₂. So, the stoichiometric ratio is 2 mol Cl₂/1 mol TiO₂. We multiply this ratio by the moles of TiO₂ we have to calculate the moles of Cl₂ we need:
1.60 mol TiO₂ x 2 mol Cl₂/1 mol TiO₂ = 3.2 mol Cl₂
Now, we convert from moles to mass by using the molecular weight (MW) of Cl₂:
MW(Cl₂) = 35.4 g/mol x 2 = 70.8 g/mol
mass of Cl₂= 3.2 mol x 70.8 g/mol = 226.6 g
Therefore, 226.6 grams of Cl₂ are needed to react with 1.6 mol of TiO₂.
(b) What mass of C is needed to react with 1.60 mol of TiO₂?
From the chemical equation, 1 mol of TiO₂ reacts with 1 moles of C(s). So, the stoichiometric ratio is 1 mol C/1 mol TiO₂. We multiply this ratio by the moles of TiO₂ we have to calculate the moles of C(s) we need:
1.60 mol TiO₂ x 1 mol C(s)/1 mol TiO₂ = 1.60 mol C(s)
So, we convert the moles of C(s) to grams as follows:
MW(C) = 12 g/mol
1.60 mol x 12 g/mol = 19.2 g C(s)
Therefore, a mass of 19.2 grams of C is needed to react with 1.60 mol of TiO₂.
(c) What is the mass of all the products formed by reaction with 1.60 mol of TiO₂?
From the chemical equation, we can notice that 1 mol of TiO₂ produces 1 mol of TiCl₄ and 1 mol of CO₂. So, from 1.60 moles of TiO₂, 1 mol of each product will be produced:
1 mol TiO₂/1 mol TiCl₄ ⇒ 1.60 mol TiO₂/1.60 mol TiCl₄
1 mol TiO₂/1 mol CO₂ ⇒ 1.60 mol TiO₂/1.60 mol CO₂
Finally, we convert the moles to grams by using the molecular weight of each compound:
MW(TiCl₄) = 47.9 g/mol Ti + (35.4 g/mol x 4 Cl) = 189.5 g/mol
1.60 mol x 189.5 g/mol = 303.2 g
MW(CO₂) = 12 g/mol C + (16 g/mol x 2 O) = 44 g/mol
1.60 mol x 44 g/mol = 70.4 g
Therefore, from the reaction of 1.60 mol of TiO₂ are formed 303.2 grams of TiCl₄ and 70.4 grams of CO₂.
iron and carbon:steel:copper and tin:___________
Answer:
iron and carbon:steel:copper and tin: metal