Find the total pressure of a gas that initially occupied 27 L at 32 degrees Celsius and 2.5 atm, if the final conditions are 12 degrees celsius and 88.0 L

Which of the following is primarily responsible for holding water molecules together in the liquid state? Dispersion forces Hydrogen bonds Ionic bonds Polar covalent bonds

When iron oxide powder and aluminum powder react, they undergo a single-displacement reaction to form iron and aluminum oxide. The reaction releases a great deal of light and enough thermal energy to melt the iron that forms.

To establish the Intermediate Nuclear Forces Treaty, Reagan negotiated with A. Yeltsin. B. Khomeini. C. Brzezinski. D. Gorbachev.

How often should carbohydrate consumption occur during an extended endurance workout to optimize performance? A. Every 10 minutesB. Every 15 to 20 minutesC. Every 30 minutesD. Every hour

1) This is any system of organisms or things ranked one above another.

How many of the following elements have 2 unpaired electrons in the ground state? C Te Hf Si A) 1. B) 2. C) 3. D) 4.

Which has a higher frequency, a neutron or electron? Why?

1) Identify the intensive properties of a sample of matter: A. mass B. hardness C. color D. volume E. reflectivity

Suppose you have a buffer containing 0.400 M hydrazine and 0.300 M hydrazinium chloride at equilibrium. Then you add 25.2 g of NaOH to 2.0 L of the buffer. What change in pH is caused by the addition of the base? A) 0.99 B) 0.40 C) 8.71 D) - 0.36

The heart is an example of which level of organization within an organism? O cell organ tissue organ system O O