What would be the best technique to separate a mixture of pigments in a sample of ink?

distillation

chromatography

filtration

evaporation

Nitrogen and hydrogen react to form ammonia as described by the chemical equation below: N2 + 2 H2 → 2 NH3 If you start with 2 moles of N2, how many moles of NH3 can you make? Fill in the t-chart below to answer the question.

A student took the weighted average of the isotopes that make up one element. What was the student trying to determine? A. The atomic number of the element B. The atomic mass of the element C. The number of electrons in the element D.

What is the correct order of processes in the accretion of planetesimals?

A chemical reaction produces CO2 (g). If 44 g is produced at 1.0 atm and 25°C, what volume will the gas occupy? (Assume that CO2 behaves as an ideal gas under these conditions.

Before some molecules react, what has to happen?

When the pH value of a solution is changed from 2 to 1, the concentration of hydronium ions ... A) decreases by a factor of 2 B) increases by a factor of 2 C) decreases by a factor of 10 D) increases by a factor of 10

Nonmetals rarely lose electrons in chemical reactions because?

Does a steel marble have more kinetic energy than a ceramic marble

What types of weather are associated with cold fronts?

How do you separate oil and vinegar?