For which of the following reactions are both reactants and products likely to be found when the reaction appears to be complete? Explain.

Mg+O2⇒2MgO

HF + H2O⇆H30+F

1. A student performs a reaction in a beaker by reaction silver nitrate with one long copper wire. The student's thermometer changes from 27°C to 35°C. Based on this, is this reaction endothermic, exothermic, or neither? Explain your reasoning. 2.

Which of these elements has a smaller atomic #? 1=aluminum 2=beryllium 3=tungsten

What is the ratio of molecules in: CH4 + 2O2 - > CO2 + 2H2O

What new realms did animals like Abarenicola open up for other animals?

How is a chemical change different from a physical change?

What is silicon used for? -matches -gunpowder -glass -steel can coating

A intramuscular medication is given at 5.00mg/kg of body weight. What is the dose in grams for a 180-lb patient?

Nuclear fusion is the source of energy for stars. Besides hydrogen, which other element is most likely also common in stars?

Since the early 2000s, careers in the field of genetics have grown at a rapid pace. Which of these is a probable cause for this explosion of available and expanding jobs?

How many litres of 0.215 m NaCl contains 4.30 mol of this salt? Assume this solvent is H2O I'm confused on this question because little m is molality but when I looked this up on google, someone solved the problem assuming it was molarity