Calculate the density of a substance with a mass of 30 g and a volume of 10 ml.

Name an element that has similar to silver in the periodic table

Which of the following is the balanced equation for P + O2 → P2O5? Question 3 options: A) 4P + O2 → 2P2O B) P + 5O2 → 2P2O5 C) 4P + 5O2 → P2O5 D) 4P + 5O2 → 2P2O5

Circle the term that does not belong in each of the following groups: KCl NaCl NaHCO3 MgSO4

How many g/l of barium chloride are in 0.5 M

A sample of oxygen gas occupies a volume of 250. mL at 740. torr pressure. what volume will occupy at 800. torr pressure?

A decomposition occurs when you open a can or bottle of soda. Carbonic acid. H. CO, is in carbonated beverages. It decomposes into carbon dioxide and water.

Can someone reword this? A magnetic substance has magnetic fields. These fields start at the North Pole wrap around the magnet, and terminate at the south pole of the magnet. All magnetic substances have north and south poles

Which of these is produced when fossil fuels are burned? A) oxygen Eliminate B) nitrogen C) hydrogen D) carbon dioxide

Predict the sign of ΔSsys for each of the following processes. Which are positive? (a) Gasoline vapors mix with air in a car engine. (b) Hot air expands. (c) Humidity condenses in cold air.

A system consists of two components, each of which must activate if the system is to activate. One component has a reliability of. 99. The other has a reliability of. 95. The components are independent of one another with respect to reliability.