What is the basic SI unit of mass?

What determines if an element is a solid or liquid at room temperature? this isn't a test question BTW.,

The actual density of iron is 7.874 g/mL. In a laboratory investigation, Jason finds the density of a piece of iron to be 7.921 g/mL. What is the percent error that is associated with Jason's measurement? -4.7% -0.6% 0.6% 4.7%

Why must a chemical equation be balanced before you can determine mole ratios

When the forward and reverse paths of a change occur at the same rate, a. the system is conserved. b. the system is in equilibrium. c. the change must be physical. d. the change must be chemical.

What tests would you use to identify a solution of ag3po4?

How many moles of water are made from complete reaction of 1.4 moles of hydrogen gas? Given the reaction: 2H2 + O2 → 2H2O

A scientific law is 1. A university accepted conclusion based on testing 2. Always changing a new evidence is presented 3. Based on new evolving theories 4. Often debated in the scientific community 5. One step toward forming a theory

12 Two molecules of HBr collide and then form H2 and Br2. During the collision, the bonds in the HBr molecules are

If the two charges represented in the figure were brought near each other, they would a. have no effect on each other. b. repel each other. c. cause static discharge. d. attract each other.

A gas tank holds 20000 liters at 850 torr. If the temperature remains constant, what will the volume, in L, of the gas be at standard pressure, 760 torr?