A gas with a volume of 4.00L at a pressure of 205 kPa is allowed to expand to a volume of 12.0L. What is the pressure of the container if the temperature remains constant?

Which type of bond will form between two chlorine atoms? A. an ionic bond B. a metallic bond C. a polar covalent bond D. a nonpolar covalent bond

What is an estimated number? a. An integer c. An exact number b. An imaginary number d. A measured numbe

Compared with the electronegativities of the elements on the left end of a particular period, the electronegativities of the elements on the right side of that same period tend to be A. lower. B. higher. C. the same. D. unpredictable.

Washing soda is a hydrated compound whose formula can be written NA2CO3 xH2O, where x is the number of moles of H2O per mole of Na2CO3. When a 2.123g sample of washing soda was heated at 130*C, all of the water of hydration was lost, leaving the 0.

According to the law of conservation of mass, the total mass of the reactants is

What part of an original isotope's number of atoms remains after two half lives?

What gas has formed when bubels form when water is boiled?

A physical property can be observed or measured without changing the identity of a substance. Which of these choices describes a physical property? The temperature at which a liquid will boil. The tendency of a substance to explode.

What is the correct order of sediment size from smaller particles to bigger particles?

How do the chemical properties of oxides change from left to right across a period? From top to bottom within a particular group?