Explain why boats made of iron are able to float. The density of iron is 7.86x10^3 g/L

What type of combustion fuels produces the greenhouse gas carbon dioxide?

Leslie incorrectly balances an equation as 2C4H10 + 12O2 → 8CO2 + 10H2O. Which coefficient should she change? 2 8 10 12

What must happen to nitrogen before it can be used

An isotope of mercury has 80 protons and 120 neutrons. whatis the mass number

Calculate the ph of the resulting solution if 27.0 ml of 0.270 m hcl (aq is added to 37.0 ml of 0.270 m naoh (aq

You and your friends are at the park on a sunny day, and you are playing on the slide. As you sold down, the hot slide burns your legs. Explian why this happened and why you didn't burn your hands when you climbed up the rope ladder

The physical properties of a compound are similar to those of its elements. true or false

How many grams of water can form if 113 g of acetylene is burned?

A cracker crushed in water will test positive with iodine but negative with benedict's solution. A cracker crushed in water has another chemical called amylase added to it.

Explain why a balloon filled with O2 at room temperature collapses when cooled in liquid nitrogen where as balloon filled with He does not