Is evaporation exothermic or endothermic

To make pickles, fresh cucumbers are soaked in a salt water solution called brine. how many liters of a 4% brine solution must be added to 16 liters of a 10% brine solution to dilute it to an 8% solution?

If you have a sample of honey that has a mass of 20 grams what is the volume

Water can be formed in the following reaction: 2H2 + O2 - > 2H2O If you have 7 moles of Hydrogen gas (H2), how many moles of water can you form? (Assume you have excessive amount of oxygen gas)

You are asked to determine the mass of a piece of copper using its reported density

Which reactants would lead to a spontaneous reaction? Mn2 + and Cr Fe and Cu2+ Al and Ba2+ Mg2 + and Sn

Which has a larger atom calcium or barium?

When a spring is compressed, the energy changes from kinetic to potential which best describes this change?

Which of the following elements is classified as a nonmetal Xe Ca Sb Cu

What two quantities does the AVEE measure

A compound is made of copper, nitrogen, and oxygen atoms. A sample of the compound has 6.4 grams of copper, 2.8 grams of nitrogen and 9.6 grams of oxygen. The compound has a molar mass of 188 g/mol. Write the name and formula of the compound.