What other signs provide evidence of chemical reactions and show that a chemical change has occurred?

If a hypothesis or multiple hypotheses appear to be true after a series of experiments regarding a topic of investigation, then the hypothesis can be accepted as a theory.

When 24 mol of methanol and 15 mol of oxygen combine in the combustion reaction, 2 ch3oh ( g. 3 o2 ( g. → 2 co2 ( g. 4 h2o ( g. what is the excess reactant and how many moles of it remain at the end of the reaction?

What fraction of a sample of 6832ge, whose half-life is about 9 months, will remain after 2.9 yr?

Calculate the number of moles of NaCl contained in 0.500L of a 1.5M solution

576 centimeters to feet

What is Flocculation

What is the difference between a 1s orbital and a 2s orbital is that

Why should distilled water be used when conducting chemical tests? Select all that apply. O Distillation removes most chemicals present in tap water that could give us false results.

2. How can you use mass and volume to find density of a substance?

Grayson wants to build an inexpensive shelter at his bus stop that he can stand in when it rains. What material would be best for building a shelter that is both strong and waterproof