Calculate the temperature of a gas when it is expanded to 5.25L. The gas originally occupies 3.45L of spave at 282K.

How many atoms of hydrogen are there in one molecule of C3H5 (OH) 3?

45.1g + 1.786g = (calculator display) & (final answer)

Whats the atomic mass of an atom

How many milliliters of a 8.20 m licl solution contain 18.4 g of licl?

Sulfur and fluorine react in a combination reaction to produce sulfur hexafluoride: S (g) + 3F2 (g) - >SF6 (g) If 50 g S is allowed to react as completely as possible with 105.0g F2 (g), what mass of the excess reactant is left.

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