Which of the following elements would be classified as a nonmetal?

Which of the following should be classified as a mixture? water air iron helium

What is the density of 10.2 mL of corn syrup that has a mass of 10.00 g?

How many moles of LiCl are in 250g of LiCl

Why does an ionic compound conduct an electric current when the compound is melted but not when it is in the solid state?

An ideal gas with MW = 30 is flowing at a steady rate through a circular pipe (cross-section area of 57.8 cm^2) at a temperature of 1.60 * 10^2 °C and pressure of 49.3 psig.

Consider this reaction: 2al (s) + 3 cucl2 (aq) → 2alcl3 (aq) + 3 cu (s) if the concentration of cucl2 drops from 1.000 m to 0.655 m in the first 30.0 s of the reaction, what is the average rate of reaction over this time interval?

Which element has an ion that is smaller than an ion calcium? Potassium, strontium, cesium, magnesium

A peregrine falcon can travel 537,600 furlong/fortnight. A race car travels 212ft/s. A spider can jump with a maximum velocity of 9,000,000 cm/hr. Which travels the fastest?

how many energy levels (shells) does an atom of oxygen have? How do you know this by looking at the periodic table?

A student needs to use 0.575 moles of sodium chloride in an experiment. How many grams should he mass out?

Which of the following seperation methods is used to seperate plant pigments? Filtration, Chromatography, fractional distillation, simple distillation?