A 1.25 g sample of an unknown gas at 39 ∘ C and 1.05 atm is stored in a 1.35 L flask. What is the density of the gas?

A sample of br2 (g) takes 48.0 min to effuse through a membrane. how long would it take the same number of moles of ar (g) to effuse through the same membrane?

Is alkynes an electrolyte

What was a direct result of the Bay of Pigs invasion in 1961? (1) Fidel Castro was removed from power. (2) Cold War tensions increased. (3) The United States announced its Good Neighbor policy.

Why are burning candles and rusting nails examples of chemical change?

In a metallic bond, electrons A. Are shared B. Are completely transferred between bonded atoms C. Move freely between the clouds of several atoms D. Move from a high energy level to a low energy within one atom

Anne prepares a solution of copper nitrate with a concentration of 30 g/dm³. What mass of copper nitrate did she add to 100cm³ of water, in grams?

Chemists classify an element an element as a metal based on what physical properties

What is the mass of 222 ml of ice if the density of ice is 0.92 g/ml?

in a water molecule, two atoms of hydrogen and one atom of oxygen share electrons. A _ bond is found in a water molecule

Explain how it is possible that a problem with hormones and feedback led to Anna Garcia's untimely death.