2 2o - Study guides, Class notes & Summaries

MARK SCHEME – AS HISTORY – 7041/2O – JUNE 2023 2 Mark schemes are prepared by the Lead Assessment Writer and considered, together with the relevant questions, by a panel of subject teachers. This mark scheme includes any amendments made at the standardisation events which all associates participate in and is the scheme which was used by them in this examination. The standardisation process ensures that the mark scheme covers the students’ responses to questions and that every assoc...

A __________ ΔH corresponds to an __________ process. -zero, endothermic -positive, exothermic -negative, endothermic -zero, exothermic -positive, endothermic correct answer: positive, endothermic Which one of the following is NOT considered a fossil fuel? -natural gas -hydrogen -anthracite coal -petroleum -crude oil correct answer: hydrogen Which one of the following statements is FALSE? -The enthalpy change for a reaction is equal in magnitude, but opposite i...

1 The roots of the equation 4x 4 -2x 3 -3x+2 = 0 are a, b, c and d. By using a suitable substitution, find a quartic equation whose roots are a+2, b+2, c+2 and d+2 giving your answer in the form at4 + bt3 + ct2 + dt + e = 0, where a, b, c, d, and e are integers. [5] 2 The lines L1 and L2 have the following equations. J-5N J 5 N L : r = K 6 O + m K O 1 K O K-2O L 15P K -2 O J24N J 3 N L : r = K 1 O +n K 1 O 2 K O K O L -5P L -4P (a) Show that L1 and L2 inte...

NBRC Therapist Multiple Choice Self Assessment Examination 2020 B; A patient with a PBW of 55 kg (121 lb) is receiving VC, A/C ventilation. Ventilator settings and blood gas analysis results are: FIO2 0.70 Mandatory rate 14 VT 350 mL PEEP 5 cm H2O pH 7.35 PaCO2 35 mm Hg PaO2 40 mm Hg HCO3 - 19 mEq/L BE -6 mEq/L SO2 (calc) 74% A respiratory therapist should recommend A. changing to SIMV mode. B.√ increasing to 10 cm H2O PEEP. C. changing to 5 cm H 2O CPAP. D. increasi...

Chem hw 5 Exam Questions With 100% Correct Answers 2024/2025 reactant and a hydrocarbon Consider the following reaction: C₆H₁₄ + 19/2O₂ → 7H₂O + 6CO₂. Here, C₆H₁₄ is a(n): HCl, NaHCO₃ What are the reactants in the following equation: HCl(aq) + NaHCO₃(aq)→ CO₂(g) + H₂O(l) + NaCl(aq) Al₂(SO₄)₃ (aq) + 2 K₃PO₄ (aq) → 2 AlPO₄ (s) + 3 K₂SO₄ (aq) Balance the following chemical reaction: Al₂(SO₄)₃ (aq) + K₃PO₄ (aq) → AlPO₄ (s) + K₂...

Chem hw 5 Exam Questions With 100% Correct Answers 2024/2025 reactant and a hydrocarbon Consider the following reaction: C₆H₁₄ + 19/2O₂ → 7H₂O + 6CO₂. Here, C₆H₁₄ is a(n): HCl, NaHCO₃ What are the reactants in the following equation: HCl(aq) + NaHCO₃(aq)→ CO₂(g) + H₂O(l) + NaCl(aq) Al₂(SO₄)₃ (aq) + 2 K₃PO₄ (aq) → 2 AlPO₄ (s) + 3 K₂SO₄ (aq) Balance the following chemical reaction: Al₂(SO₄)₃ (aq) + K₃PO₄ (aq) → AlPO₄ (s) + K₂...

AQA History7042 2O question paper History A 7June 2024

NBRC Therapist Multiple Choice Self Assessment Examination 2020 B 2024/2025. A patient with a PBW of 55 kg (121 lb) is receiving VC, A/C ventilation. Ventilator settings and blood gas analysis results are: FIO2 0.70 Mandatory rate 14 VT 350 mL PEEP 5 cm H2O pH 7.35 PaCO2 35 mm Hg PaO2 40 mm Hg HCO3 - 19 mEq/L BE -6 mEq/L SO2 (calc) 74% A respiratory therapist should recommend A. changing to SIMV mode. B.√ increasing to 10 cm H2O PEEP. C. changing to 5 cm H 2O CPAP. D...

What phase change is taking place if DHsub = 26.1 kJ/mol is being used to calculate the heat involved in the process) 1)Liquid to solid 2) Gas to solid 3) Solid to liquid 4) Liquid to gas 5) Solid to gas 3 Diethyl ether, (CH3CH2)2O , used as a solvent for extraction of organic compounds from aqueous solutions, has a high vapor pressure which makes it a potential fire hazard in laboratories in which it is used. How much energy is released when 10 g is cooled from 50.0°C to 10.0°C...

A patient with a PBW of 55 kg (121 lb) is receiving VC, A/C ventilation. Ventilator settings and blood gas analysis results are: FIO2 0.70 Mandatory rate 14 VT 350 mL PEEP 5 cm H2O pH 7.35 PaCO2 35 mm Hg PaO2 40 mm Hg HCO3 - 19 mEq/L BE -6 mEq/L SO2 (calc) 74% A respiratory therapist should recommend A. changing to SIMV mode. B.√ increasing to 10 cm H2O PEEP. C. changing to 5 cm H 2O CPAP. D. increasing to 400 mL V T. EXPLANATIONS (h) A. Changing to SIMV will n...