Hypothesis: I predict that a change in the mass of ammonium nitrate will affect the temperature change. Method: 1. Set equipment diagram 2. Measure 30cm^3 water 3. Pour into polystyrene cup 4. Measure temperature 5. Weigh 1g Ammonium Nitrate 6. Put in cup 7. Hold and swirl beaker 8. Record min. temp. 9. Dispose solution separate beaker 10. Rinse cup 11. Repeat for 2g‚ 3g‚ 4g‚ 5g Equipment: Balance Ammonium Nitrate powder Distilled water Spatula Glass beaker 30cm^3 Measuring
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Section 1 These questions are about your investigation with DCPIP and measuring Vitamin C. You should use your own results‚ your graph/s and what you remember about doing your investigation to answer these questions. All answers should be in the spaces provided. 1 What were you trying to find out in your investigation? Complete the blank spaces in the sentence below. I was trying to find out if the ……………….……………………………………………….. ………………………………………………………………………...……… depends on the …………………………………………………………………………………………………
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1. My hypothesis is that the resistance decreases as the temperature increases. I predict my results will have a negative correlation‚ and that as the temperature 2. http://www.gcsesciencemethods.co.uk/2014/05/thermistor-resistance-dependent-on.html http://www.nuffieldfoundation.org/practical-physics/effect-temperature-thermistor The first method contained a risk assessment as well as a choice of two methods‚ one with a digital multimeter as well as one with a power supply and an ammeter.
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Memory is a constructive and dynamic system rather than a passive mechanism for recording external information. Evaluate this claim‚ making reference to research findings. In order to evaluate this claim it is necessary to look at some of the research that has been carried out on memory. Most of the relevant research findings support the theory that memory is indeed a constructive and dynamic system but how much of what we store in our memory is down to active and conscious energy and how much
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estimate—An approximation of a monetary amount in the absence of a precise means of measurement. This term is used for an amount measured at fair value where there is estimation uncertainty‚ as well as for other amounts that require estimation. Where ISA 540 2 addresses only accounting estimates involving measurement at fair value‚ the term “fair value accounting estimates” is used. *Accounting records—The records of initial accounting entries and supporting records‚ such as checks and records of
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allowed) Time allowed 55 Minutes SHOW ALL YOUR WORK You may not consult anyone other than the professor or the GSI Only one double sided note sheet 8.5” x 11” allowed You may not use any electronic devices other than a calculator You cannot use a PHONE as a calculator Your Last Name: ___________________________________________________ Your First Name: ___________________________________________________ Your Student ID: ___________________________________________________ SCORE:
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industry‚ etc. Electrical transmissions and distribution systems‚ circuit breakers‚ magnesium production‚ etc. PFCs Perfluorocarbons SF6 Sulfur Hexafluoride 4 Global Warming Potential GWP is a measure of how much a given mass of GHG is estimated to contribute to global warming It is a relative scale which compares the gas in question to that of the same mass of CO2 (whose GWP is by convention equal to 1) GWP is a factor of Radiative efficiency (heat-absorbing ability) of
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carbon footprint for years‚ but always through a 100% manual‚ labor intensive process that required a healthy dose of estimating. But now thanks to groundbreaking new software‚ Stonyfield is able to track and measure our actual amount of greenhouse gas (GHG) emissions automatically with a real-time carbon footprint
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Controlled Assessment – Additional Science / Physics ISA PU2.x Friction (Specimen) For use from May 20xx to April 20xx Teachers’ Notes This ISA relates to Additional Science / Physics Unit 2: P2.1.3 Forces and braking A vehicle’s braking distance can be affected by adverse road and weather conditions and poor condition of the vehicle Overview Candidates should: • develop hypotheses and plan practical ways to test them • make risk assessments and manage risks when carrying out practical
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References: California Energy Commission (CEC). 2013. “Total Electricity System Power.” Accessed March 21st‚ 2013. Accessed March 19th‚ 2013. http://www.arb.ca.gov/cc/reporting/ghg-rep/reported_data/ghgreports.htm#registering_specified Climate Registry.org Washington DC: EIA. Accessed March 2nd‚ 2013. http://www.eia.gov/electricity/data.cfm _____ 2nd‚ 2013. http://www.eia.gov/electricity/data.cfm _____ EIA. Accessed March 2nd
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