Ca3 (PO4) 2 + 2 H2SO4 = 2 CaSO 4 + Ca (H2PO4) 2 is this balanced or unbalanced

What did Darwin observe about finches in the Galápagos Islands? a. Their feathers were adapted to match their environment. b. Their beaks were adaptations related to the foods the finches ate. c. They had identical phenotypes in all locations. d.

56.5 Which sources of evidence did Wegener use to support his theory of continental drift? Check all that apply. fossils land features climate change satellite mapping warm equatorial climates

The Theoretical yield is 2.44 g and the actual yield is 3.49 g, what is the percent yield

Which of the following is a decomposition reaction? a. 2SO2 + O2 - > 2S03 b. Zn + Cu (NO3) 2 → Zn (NO3) 2 + Cu c. 2H2O2-> 2H2O + O2 d. AgNO3 + NaCl → AgCl + NaNO3

What mass of water is needed to react with 32.9 g lithium nitride

What dose the smooth ER do

How many valence electrons are in each atom?

77.60 ml of. 210 M NaOH are required to neutralize 25.05 ml ofH2SO4 solution in a titrationexperiment. Calculate the molarity and normality of theH2SO4 solution.

A 25.0 g bold made of an alloy absorbed 250 J of heat as its temperature changed from 25.0 °C to 78.0 °C. What is the specific heat of the alloy?

How is an areas topography determined?