Which of these is pure substance as well as a compound A. An atom of hydrogen B. A sample of oxygen gas C. Sample of carbon dioxide D. A solution of carbon dioxide dissolved in water

Which types of heat transfer involve heat flow from hot objects to colder objects? A. convection, conduction, and radiation B. convection, but not conduction or radiation C. convection and conduction, but not radiation D.

What is the correct chemical formula for the compound copper (II) flouiride? A. CuF2 B. Cu2F C. CuF D. Cu2F2

A 8.53 g sample of BaCl2 barium chloride is reacted with silver nitrate to produce silver chloride and bariums nitrate to give 8.72 g of silver chloride.

A certain mass of gas in a 2.25L container has a pressure of 164 kPa. what will the new pressure be if the volume of the container is reduced to 1.50 L and the temperature stays constant?

Which situation will most likely cause the sustainability of an ecosystem to weaken? A zebra is killed and eaten by a lion. A disease wipes out several plant species. A frog lays hundreds of eggs that hatch into tadpoles.

Formula for sulfur tetrafluoride

Geologists think that parts of the Appalachian Mountains formed originally from sediments accumulating in shallow swamps. The weight of the sediments caused the area beneath them to sink, allowing more sediments to accumulate.

What volume would 1.5 mol of nitrogen gas occupy at standard temperature and pressure?

State three reason why do you think air is a mixture and water a compound?

Defined the following convection