The half-life of strontium-90 is 28 years. how long will it take a 52 mg sample to decay to a mass of 13 mg?

The temperature scale that starts with absolute zero is the ___ scale

As the temperature of one of the four liquids increases, the vapor pressure will a) increase exponentially b) decrease exponentially c) both increase and decrease exponentially d) remain the same

What symbol of xenon would be a part of the noble gas notation for the element?

If three neutrons are produced when a neutron bombards a U - 235 atom, determine the second fission product isotope when the first fission fragment is (a) xenon-133, (b) barium-144, (c) cesium-143, (d) tellurium-137, and (e) lanthanum-146.

Type the correct answer in the box. Oxygen is in group 16, and it has v alence electrons. Reset Ne

You find a little bit (0.150g) of a chemical marked Tri-Nitro-Toluene, and upon combusting it in oxygen, collect 0.204 g of CO2 and 0.030 g H2O (we'll assume that these are the products, along with nitrogen).

What reaction occurs when two amino acids are put together?

A chemical reaction takes place inside a flask submerged in a water bath. The water bath contains of water at. During the reaction of heat flows out of the bath and into the flask. Calculate the new temperature of the water bath.

An aluminum can has a height of 4.83 inches, a diameter of 2.60 inches, and a uniform wall/end thickness of 0.0112 inches.

What is the mass of 2N at 0.2829 atm 1.35 L and 25°C