An open box of bandages is on the floor. Bandages wrappers are found nearby, what chemical treatment do you use.

Two substances have different ΔHfusion values. If given the same number of moles of each substance, and assuming the same amount of heat is applied to both substances, the substance with a lower ΔHfusion value will convert from a solid to a liquid

What is the pH of a solution that has a hydrogen ion concentration of 1.0 * 10 - 9 M? Show your calculation.

A 10.00 ml sample of an aqueous solution of calcium hydroxide is neutralized by 20.00 ml of 0.02000 m hno3 (aq. what is the molarity of the calcium hydroxide solution?

Why is mass conserved in a chemical change? The energy used in the chemical reaction burns up the extra matter. The compounds are still exactly the same, they just look different.

How is the mass in grams of the element converted to amount in moles

A mixture consists of sand, salt, and iron filings. Which of the following instruments or materials would NOT be useful in separating this mixture? a. magnet b. filter paper c. screen d. water

Calculate the energy for one mole of photons (an einstein) for light absorbed at 6.90 * 102 nm.

What is A for ClO3, the chlorate ion?

The pH of a solution is 4.3. What is the pOH?

Always report their observations and results truthfully