Teacha
  • Courses
  • Mock Exams
  • For Tutors
  • For Schools
  • Pricing
Log InStart Free
  1. Past Questions
  2. /
  3. WAEC
  4. /
  5. Chemistry
  6. /
  7. 2009
  8. /
  9. Q19
Question 19

What is the percentage by weight of calcium in Ca(OCI)2? [Ca = 40, Cl = 35.5, O = 16]

  • A.28.0%
  • B.31.6%
  • C.43.8%
  • D.44.5%
Objective

Question details

Exam body
WAEC
Subject
Chemistry
Year
2009
Question no.
#19
Type
Objective
Previous · Q18Consider the reaction represented by the equation: 2NaHCO 3 → Na 2 CO 3 + H 2 O… Next · Q20 What is the value of -14 o C on the Kelvin temperature scale?

More from this paper

  • Q15Which of the following molecules is not linear in shape?
  • Q16The number of particles in one mole of a chemical compound is the
  • Q17How many molecules are there in 14 g of nitrogen at s.t.p.? [N = 14, Avogadro's…
  • Q21Which of the following expressions correctly represents Charles' law?
  • Q22In a mixture of gases which do not react chemically together, the pressure…
  • Q23In a chemical reaction, ∆H is positive when
See all Chemistry 2009 questions
Teacha

Africa's learning & exam readiness platform. Built for students, tutors, and schools.

Platform

  • Courses
  • Mock Exams
  • Past Questions

For You

  • I'm a Tutor
  • I'm a School
  • Pricing

© 2025 Teacha. Built for African learners, tutors, and schools. Teacha is not affiliated with WAEC, NECO, or JAMB. All past questions are sourced from publicly available materials.

Privacy PolicyTerms of UseCookie Policy