What is liquid nitrogen

When carbon is burned in air, it reacts with oxygen to form carbon dioxide. When 19.2 g of carbon were burned in the presence of 68.9 g of oxygen, 17.7 g of oxygen remained unreacted. What mass of carbon dioxide was produced?

What is the wavelength of light if the frequency is 5.46 x 1016 Hz?

The factor that affects how easy and electron can be removed from an Atom is the

In terms of particles, the major difference between a liquid and a gas is that the particles of a gas A. Can move past one another B. are far apart C. are held close together by strong attractions. D. have lost their elections

When you shine a white light through a prism the light is split into the different colors of the rainbow what are the colors that make up this spectrum

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?

If a fast moving car making a loud noise approaches and moves past the person what will happen as the distance between the two increases?