Complete the following problems showing all work Report answers to correct sig figs and units. (Hint: you may have to write the formulas first)
1. How many moles are in 212.5 grams of K20?
2. How many atoms are in 0.618 moles of cobalt?
3. How many atoms are in 35.1 grams of iron (II) sulfide?
4. Your friend was asked to determine the mass (in grams) of 4.28 moles of LiBr. Below is their work and answer. Explain why their set up and answer are incorrect.

answer: option (b) is the correct answer.

explanation:

a covalent bond is formed by sharing of electrons. whereas polarity arises due to difference in electronegativity of two atoms.

therefore, more is the electronegativity of an atom which combines with the titanium, more readily it will induce a partial positive and negative charge.

thus, out of the given options fluorine is most electronegative and has an incomplete octet. therefore, it will readily combine with titanium to share the electrons and complete its octet.  

chemical digestion occurs in the stomach were hcl and pepsin forms chyme, the mouth in which salivary amylase breaks down starch to form bolus, and the small intestine specifically the duodenum.

a saline water is fed to a reverse osmosis unit at flow rate o rotameter connected to reject (retentate) line reads 8 installed in reject and permeate line reads 15.2 milli siemens/cm and 300 micro siemens/com respectively.

is there any options? maybe im just not seeing them but i need the options to

-love shrooms