What Thickness (In Cm) Is the Silicon Block (Density =

question 20

Multiple Choice

What thickness (in cm) is the silicon block (density = 2.33 g/cm3) that is 2.87 cm wide and long necessary to react with 91.3 g of Cr₂O₃ by the reaction: 3 Si (s) + 2 Cr₂O₃ (s) → 3 SiO₂ (s) + 4 Cr (l) ?

• A) 2.05 cm
• B) 1.32 cm
• C) 3.08 cm
• D) 8.98 cm
• E) 3.79 cm

Describe the milestones and capabilities at different stages of development, including movements, viability, and physiological changes.

Acknowledge the impact of prenatal exposure to substances and diseases on the health and development of the fetus.

Grasp the evolving focus and scope of developmental psychology across the lifespan.

Comprehend the interaction between genetics, maturation, and environmental factors in development.