A wave has a length of 24 m/wave and a period of 4 sec/wave. what is its speed?

Which of the following techniques involves separating volatile chemical into their components? a. UV spectrophotometry b. DNA analysis c. Gas chromatography d. Infrared spectrophotometry

What is a Control trial

A sealed balloon is filled with 2.20 liters of helium gas at 20.0° C. If the pressure does not change, what is the temperature when the balloon expands to a volume of 2.60 liters? 16.9° C 23.6° C 25.1° C 73.3° C

Which example shows complete dominance? 1) 2) - parents are both homozygous dominant - one parents is red the other is white - offspring are all heterozygous - offspring have two different - offspring are all red with white spots alleles - offspring

How long will it take for 20% of the u-238 atoms in a sample of u-238 to decay?

How many unpaired electrons arethere in Cu1 + ion

A 750 mL sample of nitrogen is heated from 30°C to 92 C at constant pressure. What is the final volume?

Write a brief explanation about why a plant extract is a mixture

What is an element that has more valence electrons than fluorine and less energy levels than sodium?

Why can't we breathe in pure oxygen for long