Balancing chemical equation ]

A cylinder contains oxygen at a pressure of 10.0 atm and a temperature of 300.0 K. The volume of the cylinder is 10,000 mL. What is the mass of oxygen gas?

Which element from the periodic table has four valence electrons

Which of the following is true about photosynthesis? a) It is an exothermic reaction. b) It is an endothermic reaction. c) It produces carbon dioxide. d) It occurs in animals. Atomic theory is a) subject to change if new information is discovered.

Which atoms are likely to form chemical bonds with other atoms A. hydrogen B. neon C. sodium D. helium E. carbon F. chlorine or all of them above

What is the percent composition of the u. s quarter, which has the mass of 5.670g and contains 5.198g Cu and 0.472g Ni

What compound is always part of an aqueous solution?

How did scientists carry out research before and after the scientific revolution?

A student was comparing the solubility of equal amounts of table salt and table sugar at different temperatures. The table below shows the four samples that the student used and the temperature of the water that they were dissolved in.

How many cases of measles would you predict were reported last year

what happens when baking soda is mixed with vinegar a a new substance is formed B the substances are the same c but the baking soda stays the same but the vinegar changes form D the mixture turns from a liquid into a solid