The table shows the pH levels of four common items. If a student tests a sample of each item, which will turn a strip of red litmus paper blue? a-lemon juice
b- vinegar
c-coffee
d-hand soap

please answer and have an explanation.

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Before it was launched, a helium-filled balloon had a pressure of 201 kpa at a temperature of 27°c. at an altitude of 15,000 m, the pressure had decreased to 2.5 kpa and the temperature had dropped to -14 °c. the volume of the balloon increased to 59.3 m3. what is the original volume of the balloon? 13 m3 0.85 m3 0.077 m3 1.17 m3