Answer me fast!

When trying to determine speed you need to know

- rate and time

- distance and time

- acceleration and time

- acceleration and distance

The half life for the decay of carbon - is years. Suppose the activity due to the radioactive decay of the carbon - in a tiny sample of an artifact made of wood from an archeological dig is measured to be.

4. What type of substance would be best for use in a heating system? A liquid with a high specific heat A liquid with a low specific heat A gas with a low specific heat An explanation of why the answer is right.

Five darts strike near the center of the target. Who ever threw the darks is?

Which metal, al or ni, could reduce zn2 + to zn (s) if placed in a zn2 + (aq) solution?

A warning label is required to provide set information. The following list contains only some of this required information.

What is the chemical equation of BaO+O2→BaO2?

If you wanted to study the science of describing, naming, and classifying organisms, what would you study?

The specific heat of silver is 0.234 j / (g·c). calculate the amount of energy that is needed to raise the temperature of 175 g of silver from 22.5°c to 40.0°c.

Gypsum is hydrated calcium sulfate. a 4.89 g sample of this hydrate was heated. after the water was removed, 3.87 g anhydrous calcium sulfate remained. determine the formula of this hydrate and name the compound.

A chemical reaction produces CO2 (g). If 44 g is produced at 1.0 atm and 25°C, what volume will the gas occupy? (Assume that CO2 behaves as an ideal gas under these conditions.