Depth in chemistry - Study guides, Class notes & Summaries

2 OCR 2023 1 This question is about titanium (atomic number 22) and its compounds. (a) Titanium exists as a mixture of five isotopes. A chemist analyses a sample of titanium using mass spectrometry. The results are shown in the table below. Isotope Abundance (%) 46Ti 8.30 47Ti 7.40 48Ti 73.70 49Ti 5.40 50Ti 5.20 (i) Calculate the relative atomic mass of titanium in the sample. Give your answer to 2 decimal places. relative atomic mass = ................................................

OCR AS LEVEL Chemistry A H032/02 JUNE 2022 FINAL MARK SCHEME> Depth in chemistry.

OCR 2023 GCSE CHEMISTRY B TWENTY FIRST CENTURY SCIENCE J258/02: DEPTH IN CHEMISTRY (FOUNDATION TIER) QUESTION PAPER & MARK SCHEME (MERGED)

OCR AS LEVEL CHEMISTRY A H032/02 JUNE 2022 FINAL MARK SCHEME - Depth in chemistry. OCR (Oxford Cambridge and RSA) is a leading UK awarding body, providing a wide range of qualifications to meet the needs of candidates of all ages and abilities. OCR qualifications include AS/A Levels, Diplomas, GCSEs, Cambridge Nationals, Cambridge Technicals, Functional Skills, Key Skills, Entry Level qualifications, NVQs and vocational qualifications in areas such as IT, business, languages, teaching/trai...

OCR GCSE (9–1) Chemistry B (Twenty First Century Science) J258/04 Depth in Chemistry (Higher Tier) QUESTION PAPER AND MARK SCHEME (MERGED)

OCR 2023 GCSE CHEMISTRY B TWENTY FIRST CENTURY SCIENCE J258/04: DEPTH IN CHEMISTRY (HIGHER TIER) QUESTION PAPER & MARK SCHEME (MERGED)

OCR GCSE (9–1) Chemistry B (Twenty First Century Science) J258/02 Depth in Chemistry (FoundationTier) QUESTION PAPER AND MARK SCHEME (MERGED)

OCR AS LEVEL Chemistry A H032/02 JUNE 2022 FINAL MARK SCHEME> Depth in chemistry.

OCR AS LEVEL CHEMISTRY A H032/02 JUNE 2022 FINAL MARK SCHEME - Depth in chemistry. H032/02 Mark Scheme 9 Question Answer Marks AO element 1 (a) (i) (Acid) releases H+ ions/ H+ donor  1 AO1.1 AL(ii) (weak acid) partially dissociates/ionises  1 AO1.1 IGa n• IGIG(b) (i) Titration 1 Titration 2 Titration 3 Final reading/ cm3 27.35 27.65 27.85 Initial reading/cm3 0.05 0.10 0.45 Titre/cm3 27.30 27.55 27.40 Initial and final readings All titration readings (× 6) correct...

OCR AS LEVEL Chemistry A H032/02 JUNE 2022 FINAL MARK SCHEME> Depth in chemistry. GCE Chemistry A H032/02: Depth in chemistry AS Level Mark Scheme for June 2022 OCR (Oxford Cambridge and RSA) is a leading UK awarding body, providing a wide range of qualifications to meet the needs of candidates of all ages and abilities. OCR qualifications include AS/A Levels, Diplomas, GCSEs, Cambridge Nationals, Cambridge Technicals, Functional Skills, Key Skills, Entry Level qu...