What of the following could be classified as matter

How many moles of water are in 1.23 x 10 to the 18th power water molecules

A funny car at a drag strip went 800meters in 9sceonds what was it's velocity

Developing countries use many more resources than do developed countries. True False

What is the volume of 0.89 mol of N2 gas at STP

A student reports three trials to determine the density of an article and records the data as shown in table below. The accepted value of density is 9.6 g/mL. Calculate the percent error in trial 2. Trial Student Data (Density in g/mL) 1 9.6 2 10.

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.