Answer:
Five molecules of oxygen.
Explanation:
Hello,
In this case, considering the given chemical reaction, we must write a five before the oxygen in order to equal the number of oxygen atoms at both the right and left side (ten) so phosphorous remain the same (4):
It means that five molecules of oxygen (O₂) are needed to form one molecule of tetraphosphorous decaoxide (P₄O₁₀).
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Answers:
Question 1) d. 4 moles
question 2) a. single displacement reaction
question 3) c. 2N2H4 + N2O4 ==>3N2+4H2O
question 4) a. 40 ml alcohol in 100 ml water
The volume of 0.555M KNO3 solution would contain 12.5 g of solute iss 223 mL.
<h3>What is the relationship between mass of solute and concentration of solution?</h3>
The mass of solute in a given volume of solution is related by the formula below:
- Molarity = mass/(molar mass * volume)
Therefore, volume of solution is given by:
Volume = Mass /molarity * molar mass
Molar mass of KNO₃ = 101 g/mol
Volume = 12.5/(0.555 * 101)
Volume = 0.223 L or 223 mL
In conclusion, the volume of the solution is obtained from the molarity of solution as well as mass and molar mass of solute.
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The atomic number of an atom containing 29 protons, 29 electrons, and 34 neutrons is 29.
The atomic number of copper is 29, and it has a mass number of 63. The mass number is generally equal to the sum of the protons as well as neutrons within the nucleus, while the atomic number refers to the count of the nucleus's protons. This indicates that the nucleus of the copper atom contains 34 neutrons as well as 29 protons, for a total of 63 protons.
The charge number of such an atomic nucleus would be the chemical element's atomic number, also known as the nuclear charge number. This is equivalent to the proton number, or even the quantity of protons present in the nucleus of each atom of a particular element, for conventional nuclei.
Therefore, the atomic number of an atom containing 29 protons, 29 electrons, and 34 neutrons is 29.
To know more about atomic number
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