The specific heat of a substance is the energy required to produce a certain change in

Kobe is testing whether 100 g of substance A, 100 g of substance B, or 100 g of substance C produces more oxygen in a chemical reaction at 25°C. What is the independent variable? a) the nature of the substances. b) the masses of the substances.

When hand warmers are activated, do they create energy?

Which of the following bonds can form between atoms of equal electronegativity? (A) Ionic (B) Covalent (C) Hydrogen (D) Van der Waals

Why is an apple an example of matter

In an aqueous solution containing Ni (II) and Ni (IV) salts, which cation would you expect to be the more strongly hydrated? Why?

The half-life of a certain radioisotope is 8 days. How much (mass) of a 80 mg sample will remain after 24 days?

BF3 type of compound

What direction do electrons flow in an electrolytic cell? A. From cathode to anode B. From anode to cathode C. Through the salt bridge D. From electrode to electrolyte

What is the atomic nucleus made of? only neutrons electrons only protons nucleons

How many ml of 2.50 m hno3 are needed to prepare a 75.0 ml of 1.00 m hno3?