Atoms with the same number of protons but different masses are called Isotopes.
<h3>What are Isotopes?</h3>
An isotope is one of two or more chemical elements that exist in different forms. Varied isotopes of an element have the same atomic number and protons in their nuclei, giving them the same atomic weight. However, each elemental isotope has a different amount of neutrons, which changes its atomic weight.
isobars - Isobars are atoms (nuclides) of several chemical elements that have diverse chemical characteristics but share the same physical characteristics. So, we may define isobars as elements with the same mass number but a different atomic number.
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I think A is correct:
deltaH=(Enthalpie of reactents)-(Enthalpie of products)=110.525+285.5-393.5=2.525~2.825
Memorize that molarity = moles/liters and you can get these
Ummr eendnsje wiwhwbeh shausuwh sosne sheb
Answer:
The answer to your question is 43.9%
Explanation:
Data
ZnSO₄ 7H₂O
percent of H₂O
Process
- Calculate the molar mass of the molecule
molar mass of ZnSO₄ 7H₂O = 65 + 32 + (14 x 1) + (11 x 16)
= 287g
molar mass of H₂O = (2 x 1) + 16 = 18 g x 7 = 126 g
- Calculate the mass percent of water
287 g ------------------------- 100%
126 g ------------------------- x
x = (126 x 100)/287
x = 43.9 %
