What is the energy of an electromagnetic wave with a frequency of 3 x 109

Hz?

A. 5.96 x 10-17

B. 6.63 x 10-35 u

c. 9.00 x 1017

D. 1.99 x 10-24

Which balanced equation represents an oxidation-reduction reaction? (1) BaCl2 + Na2SO4==>BaSO4 + 2NaCl (2) C+H2O = = >CO + H2 (3) CaCO3==>CaO + CO2 (4) Mg (OH) 2 + 2HNO3==>Mg (NO3) 2 + 2H2O

Which compound is least soluble in water at 60.°C? (1) KClO3 (3) NaCl (2) KNO3 (4) NH4Cl

Why is there no set path that a scientific inquiry must follow

The distance from the surface of the earth to the moon is approximately 3.8 * 10 to the 5th km. How many days would a distance like that take if you were driving at 120mi/h

What is an "alloy" in the chapter of metals in chemistry?

Which statement best describes a mole?

The data below were collected for the following reaction at 500 ∘C: CH3CN (g) →CH3NC (g) Time (h) [CH3CN] (M) 0.0 1.000 5.0 0.794 10.0 0.631 15.0 0.501 20.0 0.398 25.0 0.

How do i convert 3.00 moles H2 to molecules?

How can you use the chemical formulas for sucrose (C6H, 20,) and rust (Fe, O,) to classity them ionic or molecular compounds?

What is true of energy as is passes through an ecosystem? a. All of the energy in an organism is used by the animal that eats it. b. Any stored energy in an organism is used by the animal that eats it. c.