Which is an example of chemical property? A. Rain freezing into hail. B. A rusty screw. C. Ice melting in a glass. D. Gas in the atmosphere condensing into clouds.

How much energy is required to heat 87.1 g acetone (molar mass=58.08 g/mol) from a solid at - 154.0°C to a liquid at - 42.0°C? The following physical data may be useful. ΔHfus = 7.27 kJ/mol Cliq = 2.16 J/g°C Cgas = 1.29 J/g°C Csol = 1.

The ph of a sodium acetate-acetic acid buffer is 4.70. calculate the ratio [ch3coo-] / [ch3cooh]

How many grams of copper will be produced if 1.00 mole of Copper (Ii) oxide reacts in excess hydrogen gas? CuO + H2 = Cu + H2O

Why is the synthesis stage called this

There are six characteristics a substance must display in order to be classified as a mineral. explain those six characteristics.

A reaction starts with 20.0 grams of lithium hydroxide (LiOH) and produces 31.0 grams of lithium chloride (LiCl), what is the percent yield of lithium chloride (LiCl) ? * LiOH + KCl - LiCl + KOH A) 64.5% B) 88.6% C) 81.5% D) 92.8%

You aren't sure if your pH meter needs to be calibrated, so you put it in a buffer solution that has a known pH of 7. You take four separate readings of the solution with the pH meter. The meter reports the pH as 5.5, 8.6, 6.3, and 9.4.

Can you explain and read this equation 2Mg + 02 - - 2MgO

The label of a gas cylinder has come off in your laboratory. You know that only one species of gas is contained in the cylinder, but you do not know whether it is hydrogen, oxygen, or nitrogen.

Give two example of compound that decompose to give off oxgyen gas