The balanced chemical equation for the reaction between PCl5 and water is given below. If 3.45 moles of HCl are produced, how many moles of water reacted?PCl5 + 4H2O -> H3PO4 + 5HCl
Answers
Final answer:
The reaction PCl5 + 4H2O -> H3PO4 + 5HCl involves 5 moles of HCl and 4 moles of water. Thus, for every mole of HCl produced, 0.8 moles of water is consumed. Hence, in this scenario, 2.76 moles of water would have been consumed to produce 3.45 moles of HCl.
Explanation:
In the balanced equation, PCl5 + 4H2O -> H3PO4 + 5HCl, you notice that 4 moles of water react with PCl5 to produce 5 moles of HCl. This means for every mole of HCl produced, 0.8 moles of water would have been consumed (4 moles / 5 moles).
So, if the reaction results in 3.45 moles of HCl, we can calculate the number of moles of water that reacted by multiplying the moles of HCl by 0.8. This gives us 2.76 moles of water.
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Final answer:
By creating a proportion based on the balanced chemical equation, it is determined that 2.76 moles of water reacted with PCl5 to produce 3.45 moles of HCl.
Explanation:
To determine how many moles of water reacted if 3.45 moles of HCl are produced, we refer to the balanced chemical equation:
PCl5 + 4H2O → H3PO4 + 5HClAccording to the equation, for every 5 moles of HCl produced, 4 moles of water are needed. Therefore, you can set up a proportion to calculate the moles of water:
- (Moles of HCl produced / Moles of HCl in the equation) = (Moles of H2O reacted / Moles of H2O in the equation)
- (3.45 moles HCl / 5 moles HCl) = (x moles H2O / 4 moles H2O)
Solving for x gives you the number of moles of water that reacted:
x = (3.45 moles HCl × 4 moles H2O) / 5Thus, x = 2.76 moles of H2O.
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Compare and contrast a chemical reaction and a nuclear reaction.
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J.J.Thompson discovered that cathode rays are negatively charged particles. According to J.J.Thompson’s plum pudding model, electrons are negative charges that embedded in a sea of positive charge like a pudding. According to Bohr’s atomic model electrons are found in discrete orbits around the nucleus. Bohr proposed that the electrons have quantized energy hence they do not spin and fall into nucleus thus making an atom highly stable.
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The key difference is the locations of, and the motions of the electrons.
Answers
Answer:
I will pick fusion over fission.
Explanation:
Fission and Fusion are nuclear processes in which atoms are altered to create energy.
By definition, fission is simply the division of one atom into two atoms while fusion is simply the combination of two lighter atoms to produce a bigger atom.
I will pick fusion over fission for the following reasons;
- Fusion reactions produces far greater amounts of energy than fission reactions normally produce.
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Answers
The moles of potassium nitrate present in the 50 ml of 0.2M solution has been 4 moles.
Molarity can be defined as the moles of solute in a litre of solution. The solution of potassium nitrate has been prepared to be of Molarity 0.2 M. The moles of solute present in the solution can be calculated as:
Molarity = moles volume (L)
The given volume = 50 ml
1000 ml = 1 L
50 ml = 0.05 L
Molarity of the solution = 0.2 M
The moles of solute:
0.2 = moles 0.05
Moles of Potassium nitrate = 4
The moles of potassium nitrate present in the 50 ml of 0.2M solution has been 4 moles.
For more information about the moles of solute, refer to the link:
n = M x V
n = 0.20 x 0.05
n = 0.01 moles of solute
Answers
Answer:
They have similar chemical properties
Explanation:
Hi, those elements all belong to the Group I of the periodic table meaning that they share not only similar electronic configuration (1 electron of valence) but also they have similar chemical properties, being those more marked the higher the atomic number.
- An example of that shared properties is that all of them react violently with water, being cesium the most violent.
Answers
Answer:
3.6cm^3
Explanation:
v=m/d
v=46.1/12.8
v=3.6cm^3
Answers
Methane and ethane demonstrate the law of definite composition and the law of multiple proportions as these both compounds have the exact atoms but in different ratios.
As for methane, it can be seen that every methane molecule contains 4 hydrogen atoms and 1 carbon atom. Where masses of carbon and hydrogen are in ratio - 12 g C / 4 g H -- reduce to 3g C/ 1 g H .
Ethane contains 2 carbon atoms and 6 hydrogen atom and their mass ratio will be - 24 g C / 6 g H -- reduce to 4 g C/ 1 g H .
So both ethane and methane demonstrate the law of definite composition and the law of multiple proportions.
Law of definite composition: The elements which are present in the compound is combined in the same proportion by mass.
Law of multiple proportion: When two or more compounds are formed by the combination of two elements then the mass ratio of one element is combined with the fixed mass of the other element.
In case of methane, it consist of one carbon atoms and four hydrogen atoms implies that has definite composition. In terms of mass, in methane, carbon and hydrogen atoms are combined in a definite ratio i.e. 12 g C/ 4 g H. Thus, methane has definite composition.
Now, carbon and hydrogen combines to give a class i.e. hydrocarbon. In this case, for every constant mass of carbon the ratio of hydrogen will always reduce to 4/3 ratio for the formation of ethane (hydrocarbon). Thus, law of multiple proportion followed.
Similarly, in case of ethane, this compound also consist of exact atoms but in different ratios.
In case of ethane, it consist of two carbon atoms and six hydrogen atoms implies that has definite composition. In terms of mass, in ethane, carbon and hydrogen atoms are combined in a definite ratio i.e. 24 g C/ 6 g H. Thus, methane has definite composition.
Now, carbon and hydrogen combines to give a class i.e. hydrocarbon. In this case, for every constant mass of carbon the ratio of hydrogen will always reduce to a specific ratio for the formation of methane (hydrocarbon). Thus, law of multiple proportion followed.