Which of the following pairs of formulas have the same empirical and molecular formulas?

a. C2H4O2 and CH20

O b. CH2 and CH4

Oc. C6H6 and CH4

Od. CO2 and SO2

Which statement gives two characteristics of all liquids? A. They spread out to fill space and have atoms that vibrate in place. B. They have atoms that vibrate in place and have a definite shape. C.

The percentage of distracted drivers operating their vehicles on roadways at any given time may be as high as

A helium-filled balloon escapes a child's hand at sea level and 21.1 deg C. When it reaches an altitude of 3000 m, where the temperature is 4.8 deg C and the pressure is only 0.72 atm, how will its volume compare to that at sea level?

Which describes the burning of fossil

Draw the structure of the organic product (s) of the grignard reaction between dimethyl carbonate (ch3oco2ch3) and excess phenylmagnesium bromide, followed by aqueous workup.

Mass defect is associated with: A. nuclear fusion B. nuclear fission C. radioactive decay D. mass lost by nuclear collisions

How to separate a mixture of iron dust and zinc dust

When the equation Fe Cl2_> FeCl is balanced, what is the coefficient for C12? explain why each answer is correct or incorrect and submit quiz a. 1 b. 2 c. 3 d. 4.

How many milliliters of 12.0 M hydrochloric acid contain 3.646 g of HCl (36.46 g/mol) ? Group of answer choices

What would happen to temperatures on Earth if the sun's heat were not distributed throughout the atmosphere