Match each element with the number of atoms found in one molecule of this compound: C5H7N (nicotine)
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Hydrogen(7)
Nitrogen(1)
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Which of the following choices represents a balanced chemical equation? Ca3(PO4)2 + 6SiO2 → P4O10 + 3CaSiO3 2Ca3(PO4)2 + 6SiO2 → P4O10 + 6CaSiO3 2Ca3(PO4)2 + 3SiO2 → 2P4O10 + 2CaSiO3 3Ca3(PO4)2 + 2SiO2 → P4O10 + 4CaSiO3
Ca3(PO4)2
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There will be two atoms of phosphorus in the 1.75 mol of calcium phosphate.
What are atoms?
Atoms are the smallest unit of matter. In a chemical reaction, the number of atoms shows the quantity of an element in the compound or reaction. Phosphorus is a chemical element that is preset in the periodic table.
In calcium phosphate, Ca3(PO4)2, the number of atoms can be calculated by counting the number of moles that is given in the equation.
The number of atoms of calcium is 3, and the number of phosphorus atoms is 2.
Now given the 1.75 mol of calcium phosphate, so the number of atoms of phosphorus will be the same in any number of moles of calcium phosphate. So there will be 2 atoms of phosphorus in the given equation.
Thus, the number of atoms is two.
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Answer:
It has 2 phosphorus atoms in 1 mol
so for 1.75 mol =2×1.75
Explanation:
need thanks and make me brainiest if it helps you
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The answer is Copper (I) Acetate. (:
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Answer: The limiting reagent is Oxygen molecule and 4 atoms of Iron will be left over.
Explanation:
The given chemical equation is:
By Stoichiometry of the reaction:
3 molecules of oxygen gas reacts with 4 atoms of iron.
So, 6 molecules of oxygen gas will react with = atoms of iron.
As, the required atoms of iron is less than the given atoms of iron. Therefore, it is present in excess and is considered as an excess reagent.
Hence, the limiting reagent is Iron atom because it limits the formation of product.
Atoms left remaining at the end of the reaction will be = 12 - 8 = 4 atoms.
Thus, the limiting reagent is Oxygen molecule and 4 atoms of Iron will be left over.
moles of Fe and O₂:
12 atoms/(6.02x10^23 atoms/mole)=1.99x10^-23 mol Fe
6 molecules/(6.02x10^23 molecules/mole)=9.967x10^-24 mol O₂
Then you find the limiting reagent by finding how much product each given amount of reactant can make. Which ever one produces the least amount of product is the limiting reagent.
amount of Fe₂O₃ produced:
(1.99x10^-23 mol Fe)x(2mol/4mol)= 9.967x10^-24mol Fe₂O₃
(9.967x10^-24 mol O₂)x(2mol/3mol)= 6.645x10^-24 mol Fe₂O₃
since oxygen produces the leas amount of product, oxygen is the limiting reagent. since we know that oxygen is the limiting reagent we can use the amount of product formed with oxygen to find the amount of iron used.
6.645x10^-24 mol Fe₂O₃x(4mol/2mol)=1.329x10^-23 mol Fe consumed
find the amount left over by subtracting the original amount of Fe by the amount consumed in the reaction.
1.993x10^-23-1.329x10^-23= 6.645x10^-23mol Fe left
find the number of atoms by multiplying that by Avogadro's number.
(6.645x10^-23mol)x(6.02x10^23 atoms/mol)=4 atoms
therefore 4 atoms of Fe will be left over after the reaction happens.
I hope this helps.
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Answer:
Colligative properties depend on the quantity of solute and solvent and the identity of the solvent.
Explanation:
Colligative properties are defined as a set of intensive physical properties that result from the interactions between solute and solvent that form a solution. In this group of properties, we can find the freezing point depression, boiling point elevation, osmotic pressure, and vapor pressure lowering.
The mentioned properties dependon the amount of solute and solvent (concentration) and the nature of the solvent. this fact can be pictured by the freezing point depression formula:
where is the freezing point of the pure solvent,
is the freezing point of the solution,
is the freezing point depression constant and m is the molality
In the equation, it can be seen that the change of temperature of the solution with respect to the pure solvent depends on the molality, which is the ratio of moles of solute and mass of solvent. Moreover, the change also depends on the freezing point depression constant that is a characteristic of the solvent.
2) CH2CH2 and CH3COCH3
3) Ch3OCH3 and CH3COCH3
4) CH3COCH3 and CH3CH2CHO
I'd like to know the steps to answering this question. Thanks!
Answers
The correct pair of compounds that are isomers is CH₃COCH₃ and CH₃CH₂CHO and the correct option is option 4.
Isomers are compounds that have the same molecular formula but different structural arrangements or connectivity of atoms.
Among the given options, the pair of compounds that are isomers is CH₃COCH₃ (acetone) and CH₃CH₃CHO (propanal). Both compounds have the molecular formula C₃H₆O, but they differ in their structural arrangement.
Acetone is a ketone, with a carbonyl group located in the middle of the carbon chain, while propanal is an aldehyde, with the carbonyl group located at the end of the carbon chain.
These structural differences result in distinct chemical properties and reactivities of the compounds.
Thus, the ideal selection is option 4.
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