A tablet of penicillin contains 250 mg of the antibacterial drug. A prescription contains 44 tablets. What is the total mass of penicillin in the prescription in grams?

Write the name for each of the following compounds: CO  S2O3  GeS2 

Carbon reacts with hydrogen to form methane according to this reaction:   C   + 2H2 –> CH4 Assume that you only obtained 20 grams of methane in the above reaction (having reacted 20 grams of carbon with 20 grams of hydrogen). What is the percent yield of the reaction?

Start with this balanced equation: KMnO4 + 8HCl + 5 FeCl2 –> 5 FeCl3   + MnCl2 + 4H2O + KCl Give two ratios for the relationship between HCl and FeCl3. An example of a ratio is xHCl : yFeCl3 where x and y are numerical values.

Large volumes of bottom sediments may be transported long distances by ____.

How many moles are present in 977.4g of NaHCO3?

Balance the following equation. If the coefficient is one, put 1 in the answer block.   PCl5   + H2O –> H3PO4 + HCl

The pycnocline can occur at the same range of depths as a halocline.

Write the molecular formula for each compound: nitrogen dioxide  dioxygen difluoride  sulfur hexafluoride 

An example of terrigenous sediment is the manganese nodule.