a sample of helium gas in a 1.50L container has a pressure of 99.8 kPA. What is the new pressure if the gas is placed in a 2.00L container?

Identify the element from its location on the periodic table: a. 4p^5

Which of the following is a decomposition reaction? A. 2Mg+O2 - > 2MgO B. CH4+2O2 - > CO2+H2 C. 2H2O + 2Na - > 2NaOH+H2 D. CaCO3 - >CaO+CO2

When swimmers push against the wall of a pool with their feet, they are pushed away from the wall. Which of Newton's laws explains why this occurs? a. Newton's first law b. Newton's second law c. Newton's third law d. all of Newton's laws

The first shell can hold a maximum of two electrons. How does this explain the valence of hydrogen?

Which describes the genetic code in a human

How does temperature affect molecules

The color of Benedictâs solution is blue. What color does it change to in high sugar concentration?

What functional groups of the emulsifying agent provide the hydrophilic character? Do these groups affect the pH?

Which element has atoms that can form single, double, and triplecovalent bonds with other atoms of the same element? (1) hydrogen (3) fluorine (2) oxygen (4) carbon

Which of the following statements best describes the basic structure of an atom? Electrons and protons are in motion around a nucleus that contains neutrons Neutrons are in motion around a nucleus that contains protons and electrons Protons are in