Give the number of significant figures: 369,132,000 sec

Which of the following has the greatest mass, in grams? a. 1 atom of lead (Pb) b. 0.5 mol copper (Cu) atoms c. 0.3 mol gold (Au) atoms d. 25 atoms of mercury (Hg)

Light bending as it passes through a rain drop is an example of ... Question 11 options: Refraction Transmission Reflection Diffraction

1. Name the mode of heat transfer

What would cause the equilibrium to shift left in this reaction? CO + 3H2 ⇌ CH4 + H2O A. adding heat to the product mixture B. a faster rate of forward reaction C. increased collisions between CO and H2 D. the escape of water from the mixture E.

Calculate the volume in mL of 1 mole of pure ethanol

Which of the following prefixes means seven

How many moles are in 1.84x10^24 formula units of CaCl2, calcium chloride?

Which is the correctly balanced chemical equation for the reaction of KOH and H2SO4?

Which element has an isotope mass number of 32 and is used as an ecological tracer?

Why do the two elements silver and iron have different properties?