List some ways you can separate a mixture into different substances? example: i have a bag of iron filings and sand how do i separate them?

Papa bless Which of the following describes the idea that heat is transferred as thermal energy by the interaction of moving particles. the kinetic theory of heat thermal energy kinetic energy the theory of thermal equilibrium

Hydrogen gas is produced when zinc reacts with hydrochloric acid. If the actual yield of this reaction is 85%? how many grams of zinc are needed to produce 112 l of H2 at STP? a. 95 g b. 180 c. 280 d. 380

What is the identity of the isotope?

Iron metal reacts with chlorine gas according to the equation:2Fe (s) + 3Cl2 (g) →2FeCl3 (s) If 25.6 g of iron react completely, how much FeCl3 will be formed?

How many moles of oxygen gas would be needed to react completely with 8 moles of lithium metal in the following reaction? 4Li + O2 yields 2Li2O

What state of matter undergoes changes in volume most easily? a. solidb. liquidc. gasd. frozen

What was the result of the atomic theory?

Explain mitosis and meiosis in your own words.

What device changes mechanical energy into electrical energy? Question 4 options: transformer generator copper wire light switch

Reaction rates are affected by how often the particles collide true false