Select the correct answer. Which is a chemical change? A. water boiling B. wood burning C. glass breaking D. ice melting E. molding iron

Write the Chemical formula for the conjugate base of the following Bronsted-Lowry acids. A) H2SO4 B) HPO4^2-

Which of the following is not a characteristic of electromagnetic waves? a. they can travel through a vacuum. b. they can travel at various speeds through any one material. c. they can be refracted. d. they can be reflected.

Balance the equation: FeSO4 (s) + O2 (g) + H2O (l) = Fe (OH) 3 + H2SO4

A sample of gas occupies 2.30 L at 1.086 atm and 70°C. What is its volume at STP?

A farmer wants to determine if a new fertilizer gives a better crop yeild than her old fertilizer. she spreads the old fertilizer in field A, which crop had a brand new irrigation system.

When you measure something in meters cubed, you are measuring

Low density: low pressure: high density Is which. evaporation? water vapor? condensation / liquid water

Which structures are found on sponges? pores medusae polyps stinging cells

Coefficients in a chemical equation are used to: balance the number of atoms on both sides of the equation ensure that all subscripts on both sides of the equation are the same indicate energy changes that occur during the reaction indicate the type

What determines your blood cholesterol level?