Determine the number of significant figures in each measurement.

12.90 s

Which would have the highest viscosity A. Shampoo B. Water C. Orange juice

Potassium atoms contribute one eletron to metallic bonding, but calcium atoms contribute two eletrons. Explain which metal is likely to be harder

How many grams of calcium are required to react with 12 grams of oxygen to form caO

An atom that has a negative four charge will have one of the following? A. 4 more protons than electrons B. An equal amount of protons and electrons C. 4 more electrons than protons D. 2 more neutrons than protons

8. The standard enthalpy of formation of RbF (s) is - 557.7kJ/mol and the standard enthalpy of formation of RbF (aq, 1 m) is - 583.8 kJ/mol.

Transport means to move something from one place to another. True False

What are two reasons that ocean water sinks in the Arctic Ocean? A. The surface water is warmer and less salty than normal. B. The surface water is warmer and more salty than normal. C. The surface water is colder and less salty than normal. D.

Which statement best describes the conductivity of weak electrolytes, such as weak acids and bases? A) Weak electrolytes do not dissolve in water and can not conduct electricity.

Two speakers are placed side by side and are described as having constructive interference. How do you know when constructive interference of sound waves has occurred?

Write about "human impact"