Sio2 + 4hf → sif4 + 2h2o in this chemical reaction, how many grams of hf are needed for 182 grams of sio2 to react completely? express your answer to three significant figures. the reaction requires__ grams of hf.

About 70 percent of the earth's surface is water-covered, and about 96.5 percent of all earth's water is salt water. identify the watery feature on earth that is made of freshwater rather than salt water. a) bay b) glacier c) ocean d) sea it is not incomplete this is the true question

Why is the structure of molecule important to its function?

Which change to the system wood cause the freely-moving piston to lower?