Researching: What is the boiling point of liquid nitrogen at standard atmospheric pressure? {"question": "What is the boiling point of liquid nitrogen at standard atmospheric pressure?", "depth": "balanced", "max_iterations": null, "token_budget": null, "event": "ask_started", "logger": "marchwarden.cli", "level": "info", "timestamp": "2026-04-09T01:49:07.183443Z"} {"transport": "stdio", "server": "marchwarden-web-researcher", "event": "mcp_server_starting", "logger": "marchwarden.mcp", "level": "info", "timestamp": "2026-04-09T01:49:07.993167Z"} {"event": "Processing request of type CallToolRequest", "logger": "mcp.server.lowlevel.server", "level": "info", "timestamp": "2026-04-09T01:49:08.002221Z"} {"question": "What is the boiling point of liquid nitrogen at standard atmospheric pressure?", "depth": "balanced", "max_iterations": 5, "token_budget": 20000, "model_id": "claude-sonnet-4-6", "event": "research_started", "trace_id": "6141a021-4a47-45df-aa0c-5acd1db78b79", "researcher": "web", "logger": "marchwarden.researcher.web", "level": "info", "timestamp": "2026-04-09T01:49:08.036624Z"} {"step": 1, "decision": "Beginning research: depth=balanced", "question": "What is the boiling point of liquid nitrogen at standard atmospheric pressure?", "context": "", "max_iterations": 5, "token_budget": 20000, "event": "start", "trace_id": "6141a021-4a47-45df-aa0c-5acd1db78b79", "researcher": "web", "logger": "marchwarden.researcher.trace", "level": "info", "timestamp": "2026-04-09T01:49:08.037079Z"} {"step": 2, "decision": "Starting iteration 1/5", "tokens_so_far": 0, "event": "iteration_start", "trace_id": "6141a021-4a47-45df-aa0c-5acd1db78b79", "researcher": "web", "logger": "marchwarden.researcher.trace", "level": "info", "timestamp": "2026-04-09T01:49:08.037172Z"} {"step": 7, "decision": "Starting iteration 2/5", "tokens_so_far": 1107, "event": "iteration_start", "trace_id": "6141a021-4a47-45df-aa0c-5acd1db78b79", "researcher": "web", "logger": "marchwarden.researcher.trace", "level": "info", "timestamp": "2026-04-09T01:49:20.314935Z"} {"step": 12, "decision": "Starting iteration 3/5", "tokens_so_far": 5768, "event": "iteration_start", "trace_id": "6141a021-4a47-45df-aa0c-5acd1db78b79", "researcher": "web", "logger": "marchwarden.researcher.trace", "level": "info", "timestamp": "2026-04-09T01:49:25.184914Z"} {"step": 15, "decision": "Starting iteration 4/5", "tokens_so_far": 16093, "event": "iteration_start", "trace_id": "6141a021-4a47-45df-aa0c-5acd1db78b79", "researcher": "web", "logger": "marchwarden.researcher.trace", "level": "info", "timestamp": "2026-04-09T01:49:27.276067Z"} {"step": 17, "decision": "Beginning synthesis of gathered evidence", "evidence_count": 17, "iterations_run": 4, "tokens_used": 29376, "event": "synthesis_start", "trace_id": "6141a021-4a47-45df-aa0c-5acd1db78b79", "researcher": "web", "logger": "marchwarden.researcher.trace", "level": "info", "timestamp": "2026-04-09T01:49:43.946958Z"} {"step": 18, "decision": "Parsed synthesis JSON successfully", "duration_ms": 21492, "event": "synthesis_complete", "trace_id": "6141a021-4a47-45df-aa0c-5acd1db78b79", "researcher": "web", "logger": "marchwarden.researcher.trace", "level": "info", "timestamp": "2026-04-09T01:50:05.440080Z"} {"step": 26, "decision": "Research complete", "confidence": 0.98, "citation_count": 5, "gap_count": 0, "discovery_count": 2, "total_duration_sec": 59.528, "event": "complete", "trace_id": "6141a021-4a47-45df-aa0c-5acd1db78b79", "researcher": "web", "logger": "marchwarden.researcher.trace", "level": "info", "timestamp": "2026-04-09T01:50:05.442761Z"} {"confidence": 0.98, "citations": 5, "gaps": 0, "discovery_events": 2, "tokens_used": 42473, "iterations_run": 4, "wall_time_sec": 57.403085231781006, "budget_exhausted": false, "event": "research_completed", "trace_id": "6141a021-4a47-45df-aa0c-5acd1db78b79", "researcher": "web", "logger": "marchwarden.researcher.web", "level": "info", "timestamp": "2026-04-09T01:50:05.442894Z"} {"error": "[Errno 13] Permission denied: '/home/micro/.marchwarden/costs.jsonl'", "event": "cost_ledger_write_failed", "trace_id": "6141a021-4a47-45df-aa0c-5acd1db78b79", "researcher": "web", "logger": "marchwarden.researcher.web", "level": "warning", "timestamp": "2026-04-09T01:50:05.443791Z"} {"event": "Processing request of type ListToolsRequest", "logger": "mcp.server.lowlevel.server", "level": "info", "timestamp": "2026-04-09T01:50:05.453034Z"} {"trace_id": "6141a021-4a47-45df-aa0c-5acd1db78b79", "confidence": 0.98, "citations": 5, "tokens_used": 42473, "wall_time_sec": 57.403085231781006, "event": "ask_completed", "logger": "marchwarden.cli", "level": "info", "timestamp": "2026-04-09T01:50:05.720817Z"} ╭─────────────────────────────────── Answer ───────────────────────────────────╮ │ The boiling point of liquid nitrogen at standard atmospheric pressure (1 atm │ │ / 14.7 psia / 760 mmHg) is −195.79 °C (77 K; −320 °F). Some sources round │ │ this to −195.8 °C or approximately −196 °C. This value represents the │ │ temperature at which nitrogen transitions from its liquid phase to a gas │ │ phase under normal atmospheric conditions. │ ╰──────────────────────────────────────────────────────────────────────────────╯ Citations ┏━━━━━┳━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┳━━━━━━━┓ ┃ # ┃ Title / Locator ┃ Excerpt ┃ Conf ┃ ┡━━━━━╇━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━╇━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━╇━━━━━━━┩ │ 1 │ Liquid Nitrogen Temperature │ The temperature of liquid │ 0.98 │ │ │ and Facts │ nitrogen is −195.79 °C (77 K; │ │ │ │ https://sciencenotes.org/liqu │ −320 °F). This is the boiling │ │ │ │ id-nitrogen-temperature-and-f │ point of nitrogen. However, │ │ │ │ acts/ │ nitrogen can exist as a liquid │ │ │ │ │ between 63 K and 77.2 K │ │ │ │ │ (-346°F and -320.44°F). │ │ ├─────┼───────────────────────────────┼────────────────────────────────┼───────┤ │ 2 │ Nitrogen - Thermophysical │ Boiling Point - at saturation │ 0.97 │ │ │ Properties │ pressure 14.7 psia and 760 mm │ │ │ │ https://www.engineeringtoolbo │ Hg - ( o F, o C ) -320.4, │ │ │ │ x.com/nitrogen-d_1421.html │ -195.8 │ │ ├─────┼───────────────────────────────┼────────────────────────────────┼───────┤ │ 3 │ What Is the Temperature of │ The temperature of liquid │ 0.95 │ │ │ Liquid Nitrogen? - WestAir │ nitrogen is -196°C (-321°F) at │ │ │ │ https://westairgases.com/blog │ its boiling point. The liquid │ │ │ │ /liquid-nitrogen-temperature- │ nitrogen temperature range │ │ │ │ properties/ │ spans between -210°C (freezing │ │ │ │ │ point) and -196°C (boiling │ │ │ │ │ point). │ │ ├─────┼───────────────────────────────┼────────────────────────────────┼───────┤ │ 4 │ What is the boiling point of │ At 1 atmosphere of pressure, │ 0.90 │ │ │ liquid nitrogen? Does it │ nitrogen boils at -195.8 │ │ │ │ change ... - Quora │ Celsius (-320.4 Fahrenheit). │ │ │ │ https://www.quora.com/What-is │ Of course, like any substance, │ │ │ │ -the-boiling-point-of-liquid- │ boiling point varies directly │ │ │ │ nitrogen-Does-it-change-in-a- │ with pressure. │ │ │ │ vacuum-or-at-standard-conditi │ │ │ │ │ ons │ │ │ ├─────┼───────────────────────────────┼────────────────────────────────┼───────┤ │ 5 │ The boiling point for liquid │ The boiling point for liquid │ 0.88 │ │ │ nitrogen at atmospheric │ nitrogen at atmospheric │ │ │ │ pressure is 77 K. │ pressure is 77 K. In an open │ │ │ │ https://brainly.com/question/ │ container, liquid nitrogen's │ │ │ │ 17018364 │ temperature is generally │ │ │ │ │ around its boiling point of 77 │ │ │ │ │ K due to continuous │ │ │ │ │ vaporization. │ │ └─────┴───────────────────────────────┴────────────────────────────────┴───────┘ Discovery Events ┏━━━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━━━━━━┓ ┃ ┃ Suggested ┃ ┃ ┃ ┃ Type ┃ Researcher ┃ Query ┃ Reason ┃ ┡━━━━━━━━━━━━━━━━━━╇━━━━━━━━━━━━━━━━━━━╇━━━━━━━━━━━━━━━━━━━╇━━━━━━━━━━━━━━━━━━━┩ │ related_research │ database │ liquid nitrogen │ The boiling point │ │ │ │ boiling point │ of nitrogen │ │ │ │ pressure │ varies with │ │ │ │ dependence phase │ pressure; │ │ │ │ diagram │ understanding │ │ │ │ │ this relationship │ │ │ │ │ is useful for │ │ │ │ │ industrial and │ │ │ │ │ scientific │ │ │ │ │ applications. │ ├──────────────────┼───────────────────┼───────────────────┼───────────────────┤ │ related_research │ database │ nitrogen phase │ Engineering │ │ │ │ diagram triple │ ToolBox │ │ │ │ point critical │ references a │ │ │ │ point │ nitrogen phase │ │ │ │ │ diagram showing │ │ │ │ │ conditions for │ │ │ │ │ solid, liquid, │ │ │ │ │ and gas phases. │ └──────────────────┴───────────────────┴───────────────────┴───────────────────┘ Open Questions ┏━━━━━━━━━━┳━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┓ ┃ Priority ┃ Question ┃ Context ┃ ┡━━━━━━━━━━╇━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━╇━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┩ │ medium │ How does the boiling point of │ Multiple sources note that │ │ │ liquid nitrogen change as │ boiling point varies directly │ │ │ pressure decreases toward a │ with pressure, suggesting │ │ │ vacuum? │ significant changes under │ │ │ │ reduced pressure conditions. │ ├──────────┼─────────────────────────────────┼─────────────────────────────────┤ │ low │ What is the exact triple point │ Sources mention nitrogen exists │ │ │ temperature and pressure for │ as a liquid between 63 K and │ │ │ nitrogen? │ 77.2 K, implying a triple point │ │ │ │ near 63 K, but exact triple │ │ │ │ point data was not provided in │ │ │ │ the gathered evidence. │ └──────────┴─────────────────────────────────┴─────────────────────────────────┘ ╭───────────────────────────────── Confidence ─────────────────────────────────╮ │ Overall: 0.98 │ │ Corroborating sources: 5 │ │ Source authority: high │ │ Contradiction detected: False │ │ Query specificity match: 1.00 │ │ Budget status: under cap │ │ Recency: current │ ╰──────────────────────────────────────────────────────────────────────────────╯ ╭──────────────────────────────────── Cost ────────────────────────────────────╮ │ Tokens: 42473 │ │ Iterations: 4 │ │ Wall time: 57.40s │ │ Model: claude-sonnet-4-6 │ ╰──────────────────────────────────────────────────────────────────────────────╯ trace_id: 6141a021-4a47-45df-aa0c-5acd1db78b79