Answer:
Very acidic solutions will turn an anthocyanin red whereas neutral solutions will make it purplish and basic solutions will turn it greenish-yellow. Consequently, the color an anthocyanin solution turns can be used to determine a solution's pH—a measure of how basic or acidic a solution is. Grate a small red cabbage.
E is the correct answer because both endothermic and exothermic reactions require activation energy. the reactants have less potential energy than do the products. Energy must be input in order to raise the particles up to the higher energy level.
The question is incomplete, the complete question is shown in the image attached to this answer
Answer:
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Explanation:
15) The both diamonds- the diamond used as a grinding tool and the two -carat diamond both have the same density because density is an intensive or intrinsic property of a substance. It does not depend on the mass of the substance present.
16) Area of magnesium = Length * width = 0.104 * 10^2 cm * 2.52 * 10^-1 cm = 2.62 cm^2
Density = mass/area * thickness
Density * area * thickness = mass
thickness = mass/Density * area
thickness = 0.104 g/ 1.74g/cm3 * 2.62 cm^2
thickness = 0.0228 cm