The table below shows the results. Colour of flask Temperature increase in °CTest 1Test 2Test 3Black 191727Silver 101211Calculate the mean temperature increase for the Silver flask?

Which substance in Figure 15-1 is not affected by temperature?Group of answer choicesHClNaClNaNO3KNO3

A pure sample of Substance S is put into an evacuated flask. The flask is then heated steadily and the temperature measured as time passes. The results are graphed below, in the middle (in green).Identical experiments are now run on Substance Y and Substance Z. Substance Y is just like S except that it has a lower enthalpy of vaporization △Hv. Substance Z is just like S except that it has a higher enthalpy of fusion △Hf.Select the graphs below, on the left and right, that show the results you expect for these new experiments.

A student wants to measure the temperature change of water after adding a 5 cm3 block of copper to container 1 and a 20 cm3 block of copper to container 2. Both blocks of copper were heated to 40°C before they were added to the water. The image below shows the experiment immediately after adding the copper.What should be expected from this experiment? A. The temperature should increase more in container 2 because the 20 cm3 block contains more thermal energy. B. The temperature should decrease more in container 2 because the 20 cm3 block contains more thermal energy. C. The temperature should increase more in container 1 because the 5 cm3 block contains more thermal energy. D. The containers will have the same amount of temperature change because the 20 cm3 block and the 5 cm3 are made from the same element.

The student wrote the hypothesis:‘Surface colour of the flask affects the amount of infraredabsorbed when the heater is switched on for five minutes.’Describe how the equipment in Figure 2 could be used to test this hypothesis

The mean global surface temperature has increased by about _____ over 1850-2020 values.(Fill in the Blanks with the correct answer)0.40.4 0C0C0.80.8 0C0C1.21.2 0C0C1.61.6 0C