Lakshmi has a sample of ammonium nitrate (NH4NO3) that has a mass of 40.10 g. She knows that the molar mass of NH4NO3 is 80.0432 g/mol. To the correct number of significant digits, how many moles of NH4NO3 does the sample contain?

A silver necklace is melted down and poured into a square shaped mold. this produces a square shaped piece of silver with which property? a. greater conductivity than the necklace b. the same shape as the necklace c. the same mass as the necklace. d.

Grinding wheat in to flour is a a. physical change b. chemical change

Sally has three identical plants. Plant A is given 100 mL of soda, plant b is given 100 mL of orange juice and plant C is given 100 mL of water. Each plant is put in the same type of pot and is given the same amount of sunlight each day.

The relationship between a law and a theory is Laws are based on complex theories Laws become theories Theories all become laws Theories never become laws Theories can become laws

Is aluminum found in mineral or compound?

What evidence do you have that the slope of the natural logarithm plot will be the same for all ions of the same charge, and not just for the ions you investigated?

How many Oxygen elements are in a carboxylic acid

The number of protons in the nucleus Of an Atom is equivalent to which of the following

What does pH measure? number of hydrogen atoms in an acid number of hydroxide atoms in a base concentration of hydrogen ions in solution concentration of hydroxide ions in solution

Based on charles's law, which of the following statements is true for an ideal has at a constant pressure and mole amount? A. The number of collisions is independent of volume B. The number of collisions decreases with increase in volume C.