(Solved): For all problems involving calculations, show your work. Carry the units through each calculation a ...

For all problems involving calculations, show your work. Carry the units through each calculation and follow significant figure rules. Practice on scratch paper then here. 1. Perform the following: a. Write the formula for strontium phosohite. h Calculate the molecular weight for strontium phosphite. c. Calculate the number of moles of barium sulfite in \( 113.62 \mathrm{~g} \) of strontium phosphite. d. Calculate the total number of atoms of sulfur in \( 113.62 \mathrm{~g} \) of strontium phosphite. 2. Write out: a. The formula for sodium hyponitrite. b. Determine the molecular weight (molar mass) of sodium hyponitrite. c. Calculate the number of moles of sodium hyponitrite in \( 56.89 \) grams. d. Calculate the total number of atoms of oxygen in \( 56.89 \) grams of sodium hyponitrite. 3. Serotonin \( \left(\mathrm{C}_{10} \mathrm{H}_{12} \mathrm{~N}_{2} \mathrm{O}\right) \) is a neurotransmitter that when balanced is responsible for happiness, optimism, and satisfaction. How many nitrogen atoms are there in \( 12.40 \mathrm{~g} \) of serotonin? 4. Shakti is baking a birthday cake and uses 250 . grams of sucralose \( \mathrm{C}_{12} \mathrm{H}_{1} \mathrm{C}_{3} \mathrm{O}_{8} \). How many molecules of sucralose are there in the birthday cake? 5. Barium hydroxide is a strong base used in pesticides and in the manufacture of glass. Calculate the number of hydrogen atoms in \( 16.20 \mathrm{~g} \) of barium hydroxide. 6. On a cold day in Chicago, Zendaya grabbed a hot chocolate to drink. The hot chocolate has \( 3.062 \times 10^{21} \) carbon atoms. How many moles of carbon atoms are there in the hot chocolate? 7. Almonds get their flavor from a compound known as benzaldehyde \( \left(\mathrm{C}_{7} \mathrm{H}_{6} \mathrm{O}\right) \). How many molecules of benzaldehyde do I have if I have \( 29 \mathrm{mg} \) of benzaldehyde? 8. Vanilla ice cream is made with vanillin \( \left(\mathrm{C}_{8} \mathrm{H}_{9} \mathrm{O}_{3}\right) \), which is an artificial flavor. If I have 186 grams of vanillin in a scoop of vanilla ice cream, how many molecules of vanillin will the ice cream contain? 9. The mass reference used in molar mass values in the modern periodic table is based on the carbon-12 atom having a mass of exactly 12 amu. This means one \( \mathrm{mol} \) of \( \mathrm{C}-12 \) atoms has a mass of exactly \( 12 \mathrm{~g} \). Show how to determine the molar mass of carbon shown in the periodic table if C-12 atoms make up \( 98.90 \% \) of natural abundance carbon on Earth and C-13 atoms with mass \( 13.003355 \mathrm{amu} \) make up 1.10\% of natural carbon (C-14 atoms make up a negligible fraction of all carbon atoms on Earth). 10. The Madrigal family grills every Sunday after their weekly soccer match with the Dorsey family. To grill, however, they need a total of \( 246.44 \mathrm{~g} \) of propane gas. How many protons are there of carbon in \( 264.44 \mathrm{~g} \) of propane gas? 11. Diego is saving turtles from a plastic net and must swim across \( 1.403 \times 10^{34} \) molecules of water. How many liters of water does Diego need to swim through to get to the turtles? 12. There are 104 days in summer vacation and one of those days you go for a swim. The pool has a total of \( 3.0013 \times 10^{6} \) liters of \( \mathrm{H}_{2} \mathrm{O} \). How many molecules of \( \mathrm{H}_{2} \mathrm{O} \) are there in the pool? How many grams of \( \mathrm{H}_{2} \mathrm{O} \) ? How many atoms of oxygen are there?