Select the correct answer.
which of the following can't be separated into simpler substances or converted into another substance by chemical processes?
a. element
b. compound
solution
d. suspension
e. collold
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7. what temperature is need to just dissolve 50 g of nh4cl in 75 g of water? '

Calculate - analysis of compound composed of iron and oxygen yields 174.86 of fe and 75.14g of o. what is the empirical formula for this compound?

Identify one disadvantage to each of the following models of electron configuration: -dot structures -arrow and line diagrams -written electron configurations type in your answer below. (answer) -dot structures do not show the distribution of electrons in orbitals and take up a lot of space. -arrow and line diagrams take up a lot of space and make it difficult to count electrons. -written configurations make it easy to lose count of electrons and do not show the distribution of electrons in orbitals.