Some scientists believe that helium should not be used to inflate party balloons. why

A substance in a beaker has a temperature of 22 degrees Celsius. At 1:00, you begin to heat it. After 14 minutes, its temperature reaches 48 degrees Celsius, and you stop heating it. By 2:03, it has cooled back down to 22 degrees Celsius.

The problem say what is the volume (in kL) of 3.7505 x 10^4 mg of iron? Iron has a density of 7.87 g/ml. Use correct significant figures

How many atoms are in 1 mole of ca

The ability of an element to react is the elements A. Stability B. Activity C. Valence D. Electronegativity

Describe how adding the prefix mega to a unit affects the quantity being described

A pump contains 0.5 l of air at 203 kpa. you draw back on the piston of the pump, expanding the volume until the pressure reads 50.8 kpa. what is the new volume of air in the pump? 0.2 l 1.0 l 2.0 l 4.0 l

How can there be snow near a giraffe's home This is actually science so yeah

If a sealed syringe that contains some gas in heated in which direction will the syringe plunger move

Use the drop‑down menus to label the statements as either true of false. Dichloromethane is flammable. true false Methanol is flammable. Concentrated sulfuric acid is corrosive. 10% sodium carbonate solution must be used in the fume hood.

What is the process all rocks are continuously in during which that can change into other types of rocks