How many molecules are in 0.25 moles of CH4

A certain wave has a wavelength of 35 meters and a frequency of 4.0 Hz. What is the speed of the wave? A) 8.8 m/s B) 31 m/s C) 39 m/s D) 140 m/s

Question: Why do you suppose small-ring cycloalkenes such as cyclohexenedon't exist as cis-trans isomers?

What volume of 12.0 m hcl (aq) is required to make 75.0 ml of 3.50m hcl (aq) ?

30 Which statement describes the stability of the nuclei of potassium atoms? (1) All potassium atoms have stable nuclei that spontaneously decay. (2) All potassium atoms have unstable nuclei that do not spontaneously decay.

Stefan is conducting research on gene therapy. His primary source of information was the government website for the Human Genome Project, which was a thirteen-year project conducted by the US Department of Energy and the National Institutes of

Convert: 65 kg to mg 65,000 mg O 65,000,000 mg O 65 mg

F. How many representative particles are in 6.78 moles of sucrose C12H22011?

The ratio of the lengths of two sides of a right triangle forms a

What element is used in making thermometers

How many dots are shown in the electron dot diagram for calcium, in group II and period 4 with 20 protons and 20 electrons? a. four c. eight b. two d. twenty