An isotope of cesium (cesium-137) has a half-life of 30 years if 1.0g of cesium-137 disintegrates over a period of 90 years how many g of celsium-137 would remain

What is plastic deformation

How does a lone pair contribute to molecular shape? A. It is too small to affect the molecule's shape. B. It takes up space like an "invisible" atom. C. It forces the molecule into a tetrahedral shape. D. It lets the bonding pairs spread out more.

HNO3 Express your answers as ions separated by a comma.

A student sets up two reactions. reaction 1 uses 0.260 mol/l of reactant, and reaction 2 uses 0.580 mol/l of reactant. how many times faster is reaction 2 compared to reaction 1?

Ou are to give ampicillin, with a recommended dose of 45 mg/kg, to a child with a mass of 22 kg. If stock on hand is 250 mg/capsule, how many capsules should be given?

How many liters of 2M solution can be made using 500. grams of KI?

How many moles of copper are present in a sample of tennantite with a mass of 2370 grams

The Calvin cycle is another name for the

When a solution is considered to have a high concentration of hydrogen ions (H+) is also considered to be? a) acidic b) basic c) neutral d) hot

Why does the sky change colors at sunset? 1 because the sun changes colors 2 because the atmosphere reflects colors 3 because long wavelengths are scattered the least 4 because short wavelengths are scattered the least