How do the isotopes of an element differ? How are they the same?

How many molecules are in 4.2 miles of water?

A mixture of n2 (g) and h2 (g) has mole fractions of. 40 and. 60, respectively. what is the density of the mixture at 1 bar and 0 degrees celsius?

Explain why are we able to use water displacement to find the volume of the irregular objects in cm3.

Scientists have established that some of the layers of Earth are solid, some are liquid, and some are semi-fluid. Explain how the scientists are able to determine the liquid and solid layers.

Was energy made or created

How to find the better buy of two of the same item, but they have different units of measurements and different costs.?

The agricultural practice of spraying insecticides leaves behind which pollutant in the soil? A. Chemical poison B. Excess nitrogen C. Excess salt D. Acidic compounds

What is the name of the compound composed of iron and carbonate? [hint: iron has a + 3 charge in this compound]?

In a chemical equation the products appear on which side of the equation? A. Left B. Top C. Right D. Bottom

What does the shape of a protein molecule resemble?