The elements within a star can be determined by:

radio telescope

spectroscope

radar

Why are all organs are in the alimentary canal important in digesting food

Approximately what precent of parent isotopes remains after 0.5 half lives have passed

When making broccoli cream soup, the broccoli and aromatics should be A. sweated. B. puréed. C. simmered. D. burned.

1) An experimenter notices that the state of matter of a pure substance changes from a liquid to a gas.

How many grams of NH3 can be produced from 2.27mol of N2 and excess H2.

PH + pOH = 14. What is the hydroxide concentration of a solution with pH of 8?

A student Increases the temperature of a 417 cubic centimeter balloon from 278 K to 231 K. Assuming constant pressure what should the new volume of the balloon be

What is the molarity of a solution with 1.17 moles of Ca (OH) 2 disolved in 0.2 liters of water? A. 1.17 M B. 0.2 M C. 0.17 M D. 5.85 M

What happens to acetone molecules when you add heat to a beaker of liquid acetone?

An effluent discharge with a flow of 1.5 m3/s and an ammonium-N concentration of 2 mg/L is released to a river with a flow of 12 m3/s and an ammonium-N concentration of 0.015 mg/L.