Which unit measures mass?

Consider this reaction: KOH + HBr - KBr + H20 Which statement is most likely true about HBr?

What does the nucleus of a atom contain?

Which of the following is not a mineral? a. Coal b. Solid ice c. Natural diamond d. Gold

What determines if a chemical reaction is spontaneous or not?

Which one of the following events occurs first in a nerve impulse? a. Potassium ions move to the outside of a neuron. b. Sodium ions move to the inside of a neuron. c. Potassium ions move to the inside of a neuron. d.

The molecules in a solid object A. flow freely around each other B. vibrate slowly C. are completely still all the time

How many moles of water can be obtained from the reaction of 4 moles of O2?

A solid white substance A is heated strongly in the absence of air. It decomposes to form a new white substance B and a gas C. The gas has exactly the same properties as the product obtained when carbon is burned in an excess of oxygen.

C). If 0.5 mole of oxygen (0,) reacted with hydrogen (H2), how many mole of water (H, 0) was produced from the reaction?

A cube has a depth of 10 cm. What is the volume of the cube? Or What is depth?