I’m sorry I’m really not sure how to answer this but have to respond to have this app I hope you have a good day:)
Answer:
Limiting reactant: Cl2.
Max mass of PCl3 = 41.44 g.
P4 leftover = 5.51 g.
Explanation:
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In this case, since the undergoing chemical reaction is:
In order to compute the maximum amount of PCl3, it is necessary to compute the grams of this product produced by each reactant, just as shown below, whereas molar masses and mole ratios are used:
Thus, since chlorine gas yields fewer grams of PCl3 than P4 we infer Cl2 is the limiting reactant and 63.41 grams of PCl3 product are yielded.
Finally, for the excess reactant, we see a difference of 63.41-41.44=21.97g, so we can compute of the leftover of P4 as follows:
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Answer:
C) Subtract the number of protons from mass number.
Explanation:
An atom consist of electron, protons and neutrons. Protons and neutrons are present with in nucleus while the electrons are present out side the nucleus.
All these three subatomic particles construct an atom. A neutral atom have equal number of proton and electron. In other words we can say that negative and positive charges are equal in magnitude and cancel the each other. For example if neutral atom has 6 protons than it must have 6 electrons. The sum of neutrons and protons is the mass number of an atom while the number of protons are number of electrons is the atomic number of an atom.
For example
The carbon have six protons and six neutrons so its atomic mass is 12 amu and atomic number is six.
Number of neutrons = mass number - number of protons
Number of neutrons =12 - 6
Number of neutrons = 6
Answer:
1. Kelvin
Explanation:
The standard temperature for scientific report is the kelvin.
According to the SI unit definition, temperatures should reported in Kelvin.
- On the kelvin scale, the freezing point of water is 273k
- The melting point of water is 373k
- The kelvin is widely accepted in scientific climes.
- It is possible to convert from this scale to another.
C.) The law of definite proportions helps us explain why water will always "<span>consist of a particular proportion of hydrogen and oxygen"
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