Which of the following answer choices contains a covalent bond?

Select one:

a. KF

b. CaS

c. NO

d. MgS

An object with a density of 1.7 g/ml will float in water True or False

Living things on earth belong to which sphere? A. atmosphere B. lithosphere C. magnetosphere D. biosphere

When is the absorption spectrum of an electron generated?

What happens when the temperature of an object increases? The number of the object's particles increases. The object's particles stop moving. The object's particles move closer together. The object's particles move faster.

How do I write 2.345 X 10^-4cm out of scientific notation?

Which statement describes the redox reaction that occurs when an object is electroplated? A. It is spontaneous and requires an electric current. B. It is spontaneous and produces an electric current. C.

How are electromagnetic different than all other waves

Find the ratio of speeds of an electron and a negative hydrogen ion (one having an extra electron) accelerated through the same voltage, assuming non-relativistic final speeds. Take the mass of the hydrogen ion to be 1.67*10^{-27} kg.

A type of rock that undergoes changes because of heat and pressure

How many milliliters of a 1.25 molar HCL solution would be needed to react completely with 60 g of calcium metal Ca+2HCl - - > CaCl2 + H2