Chemistry, 09.10.2020 22:01, AdoreeLayla
Kernels of corn are heated and become popcorn. Why is this a chemical change? A. The size and color of the corn have changed. B. The kernels change due to their reaction to heat. C. The volume of the kernels expands. D. The mass of the kernels increases.
Answers: 1
Chemistry, 22.06.2019 00:10, goodygoodgirlygirl
Which of the following best describes the formation of plasma?
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Chemistry, 22.06.2019 20:00, jalenevoyles
Phosphoric acid is a triprotic acid ( =6.9×10−3 , =6.2×10−8 , and =4.8×10−13 ). to find the ph of a buffer composed of h2po−4(aq) and hpo2−4(aq) , which p value should be used in the henderson–hasselbalch equation? p k a1 = 2.16 p k a2 = 7.21 p k a3 = 12.32 calculate the ph of a buffer solution obtained by dissolving 18.0 18.0 g of kh2po4(s) kh 2 po 4 ( s ) and 33.0 33.0 g of na2hpo4(s) na 2 hpo 4 ( s ) in water and then diluting to 1.00 l.
Answers: 3
Kernels of corn are heated and become popcorn. Why is this a chemical change? A. The size and color...
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