What is the energy released or absorbed as heat when one mole of a compound is produced by combination of its elements? select one:

a. heat of combustion

b. free energy

c. entropy

d. heat of formation?

True or False: Radioactivity drives plate-techtonics?

What are the male and female reproductive structures found in flowers? male: stamen; female: pistil male: pistil; female: stamen male: sepal; female: petals male: petals; female: sepal

How to calculate formula unit mass of calcium bicarbonate

What is 6.5 m converted to inches? (1 m = 100 cm, 1 in = 2.54 cm) 260 in 620 in 26 in 62 in

An electron can often be removed from an atom because it is a. negative. b. not attracted to the nucleus of the atom it surrounds. c. affected by friction since the attraction to the nucleus is sometimes not very strong. d.

Name the folowing ionic compound MgCl2

How can substitution mutation affect a person's traits?

Which two compounds are electrolytes A) KOH and CH3COOH B) KOH and C5H12 C) CH3OH and CH3COOH D) CH3OH and C5H12

Explain why it is harder to remove an inner shell electron than a valence electron from an atom?

Name the organic product of C4H10 + Cl2 - -> C4H9Cl + HCl