Which equation represents a single-replacement reaction? a. mg + 2hcl → mgcl2 + h2 b. co2 + h2o → h2co3 c. agno3+ hcl → agcl + hno3 d. ch4 + 2o2 → co2 + 2h2o

According to each substances heat of fusion, which of the items below requires more heat to be added per gram of substance to go from solid to liquid? silver sulfur water lead

What is the mass of 0.46 mol of mgcl2

Which of the following statements about hybrid orbitals is or are true? choose all that apply. choose all that apply. under sp2 hybridization, the large lobes point to the vertices of an equilateral triangle. after an atom undergoes sp hybridization there is one unhybridized p orbital on the atom. the angle between the large lobes of sp3 hybrids is 109.5∘