Which of the following chemical equations is unbalanced?

A) CH4 + 2O2 CO2 + 2H2O
B) 3Mg + Mn2O3 3MgO + Mn
C) AgNO3 + LiOH AgOH + LiNO3
D) 2NaOH + H2SO4 Na2SO4 + 2H2O

What is thought to have caused the mass extinction at the end of the cretaceous period?

Living cells cannot use heat to provide the activation energy for biochemical reactions because which choice(s) complete the sentence correctly? a) answer choice ii. eliminate b) answer choices ii and iv. c) answer choice iii and iv. d) all answers can complete the sentence.

Apair of fruit flies reproduces and has 1,000 offspring. all 1,000 of the offspring have the alleles gg. what is the most likely combination of alleles for each parent