The flame is lit on a hot-air balloon, and it floats up into the sky. This is an example of what kind of energy conversion?

A piece of a metal that has a density of 5.2g/cm3 and a mass of 100g was placed in a full jar of water. How many Ml of water spilled out of the jar. Note One cm3=one mL

What elements are in the phone screen?

What element is likely to form an ionic compound with chlorine?

4. Electronegativity is a measure ofA) the energy needed to remove an electron from an atom. B) the energy released when an electron is added to an atom. C) the magnitude of the negative charge on an electron.

What type of sedimentary rock is formed from mechanical weathering debris

A light-year measures the distance a light beam can travel in one year. One light-year is equal to 9 500 000 000 000 kilometers.

The first ionization energy, e, of a potassium atom is 0.696 aj. what is the wavelength of light, in nm, that is just sufficient to ionize a potassium atom? values for constants can be found here.

A gene is a to a chromosome as (A) a pea is to a pod (B) a front to a back (C) a bike is to a car (D) a building is to a window

How are you enjoying this weather? (i need good reasons}

In today's experiment, some lab students let their chromatograms elute slightly longer than others. If one student's solvent front traveled to 9.80 cm, and another student's solvent front traveled 8.