What best describes a star clusters

What is the coefficient for the oxygen molecule in the chemical equation below? 2hgo → 2hg + ? o2?

How many atoms is 87.4 grams potassium?

Write if each is a balanced or unbalanced force: -2 people pulling opposite directions on a rope w/the same amount of force -2 women lifting a box into the back of a truck -a hook sitting high upon a bookshelf -an earthquake releasing energy at a

What is the effect on the outlet temperatures in both the hot and cold streams, when the surface area (length and diameter) is reduced? a - The outlet temperature of the cold stream decreases and the outlet temperature of the hot stream increases.

Carbon-14 is a radioactive isotope which decays with a half-life of 5730 years. what is the first-order rate constant for its decay, in units of years-1?

The uranium used for nuclear fuel exists in nature in several minerals. Calculate how many moles of uranium are in 8.00 moles of the following: 1. carnotite, K2 (UO2) 2 (VO4) 2 • 3H2O 2. uranophane, CaU2Si2O11 • 7H2O 3.

What is the chemical formula of a compound that is composed of the ions Ca2 + and br-

What element is likely to form an ionic compound with chlorine?

Will a parachute slow a skydiver more at a very high altitude or a lower altitude?

Carbon monoxide is: Only found in large cities An odorless, colorless, toxic gas Healthy to breath in A danger when driving on the open highway