A student placed two bar magnets under a sheet of paper and added iron filings on top as shown in Figure 1. Which image shows two magnets that were placed with the north and south poles facing each other?

Identify a specific example for each type of technology

Acompound contains c, h, and o atoms. when 1.130 g of the compound is burned in oxygen, 1.064 g co2 and 0.3631 g h2o are produced. what is the empirical formula of this compound?

If i initially have a gas at a pressure of 12 atm, a volume of 23 liters, and a temperature of 200 k, and then i raise the pressure to 14 atm and increase the temperature to 300 k, what is the new volume of the gas?