A compound has the empirical formula chcl. a 256ml flask, at 373 k and 750. torr, contains 0.800 g of the gaseous compound. give the molecular formula.

The Rocket Club is planning to launch a pair of model rockets. To build the rocket, the club needs a rocket body paired with an engine. The table lists the mass of three possible rocket bodies and the force generated by three possible engines.

A piece of iron metal is heated to 155 degrees C and placed into a calorimeter that contains 50.0 mL of water at 18.7 degrees C. The temperature of the water rises to 26.4 degrees C.

The question is explain how each of the following change as you travel across the spectrum - wavelength, frequency and energy

Which of the following is a technique used in relative dating? Beta decay Index fossil correlation Isotope ratios Radiocarbon dating

How does the corona of the Sun affect earth

How do you express 0.00026 in scientific notation

All organisms need instructions to specify their traits. The instructions, or code, that is responsible for all the inherited traits of an organism.

1. Are state changes chemical or physical changes? Provide an example of a state change and explain why it is a chemical or physical change.

What is the morality of a 750.0 milliliter solution containing 2.5 miles of solute?

An electron in a sodium atom moves from the third shell to the fourth shell. This change is a result of the atom (1) absorbing energy (3) gaining an electron (2) releasing energy (4) losing an electron