If the enthalpy value for a reaction is negative, what does that indicate about the reaction?

The hydrogen ion concentration of a vinegar solution is 0.00010 m. how is this concentration written in scientific notation?

Convert 2,000 g/l to the unit g/ml. 200 g/ml 200,000 g/ml 2.0 g/ml 0.002 g/ml

What is the purpose of the prefixes in the metric system?

How do you tell by the formula that an element on the periodic table is a metal

Based on the results of this lab, write a short paragraph that summarizes how to distinguish physical changes from chemical changes.

Balance the following oxidation-reduction reaction: Fe (s) + Na + (aq) →Fe2 + (aq) + Na (s) Express the coefficients as integers separated by commas (e. g., 4,1,3,2, where 1 indicates the absence of a coefficient).

What are the three sub-types of convergent plate boundaries

Which phrase describes an atom

How many moles of NH3 are in 0.250 L of a 5.00 M aqueous solution?

There are different types of bonds based on electronegativity. One bond type is known as non-polar covalent. Which choice below has this bond type? A. all of the compounds B. H2 C. H2O D. NaCl