STEM 11 1.How many moles of carbon dioxide does 250 grams of the substance have? How many molecules of CO2 are there?
2. Determine the percent composition of each element in the compound in tartaric acid (C4H6O6)
3. What are the empirical and molecular formula of a compound that is 40.27% potassium, 26.78%
chromium, and 32.95% oxygen?
4. Balance the following equations
1. _ C + _ O2 → ___ CO
2. _ Mg + _ O2 → _ MgO
3. _ H2O2 → _ H2O + _ O2
4. _ CH4 + O2 → _ CO2 + _ H2O
5. _ N2O5 → _ N2O4 + _ O2

coral.

explanation:

coral. many marine organisms that produce calcium carbonate shells or skeletons are negatively impacted by increasing co2 levels and decreasing ph in seawater.

water and alcohols have similar properties because water molecules contain hydroxyl groups that can form hydrogen bonds with other water molecules and with alcohol molecules, and likewise alcohol molecules can form hydrogen bonds with other alcohol molecules as well as with water.

b) nuclear ive learned that in a pedtrodic table