a ballon is filled with 35.0 f of helum in the moring when the twmoerature is 68 f. by noon the temperature has risen to 13 f. what is the new volume of the baloon

An effluent discharge with a flow of 1.5 m3/s and an ammonium-N concentration of 2 mg/L is released to a river with a flow of 12 m3/s and an ammonium-N concentration of 0.015 mg/L.

23.10 grams of aluminum metal are dissolved in a solution that contains 1.89 mol of hydrochloric acid to yield aluminum chloride (AlCl3) and hydrogen gas according to the following balanced chemical equation.

What role does hydrogen bonding play in liquid water and ice?

Vinegar, fruit juice and cola are examples of A: strong acids B: strong bases C: weak acids D: weak bases

The frequency of a given region of the electromagnetic spectrum is more than 3 x 1019 HZ. Note that the speed of light is 2.998 x 108 m/s. Which waves are found in this region?

A 0.450 g0.450 g sample of impure CaCO3 (s) CaCO3 (s) is dissolved in 50.0 mL50.0 mL of 0.150 M HCl (aq) 0.150 M HCl (aq).

Define and explain bond energy.

A colorless, toxic, radioactive gas is called what

Making observations is the first step in the scientific method. Why don't scientists stop with the first step when creating an experiment? A.

Brass is an example of