Chemistry, 12.07.2019 14:00 alyonaprotopopova
How would you best describe the red or pink solutions labeled “2-4”? a. basic b. neutral c. acidic
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Why does the sun appear to be the brightest star in the sky? a- its apparent brightness is much greater than other stars. b- it burns more gas, making it brighter than any other star. c- it is the largest star in the galaxy, so it is the brightest star. d- its relative distance to earth is closer than the other stars.
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According to the diagram, what sources contribute to the phosphorus found in soil? according to the diagram, phosphorus found in soil contributes phosphorus to what other sources?
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Which of the following is an indication that a substance has undergone a chemical change? a. no new product has been formed. b. the color of the substance has not changed. c. the original constitute has not changed. d. the molecular structure has changed.
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How would you best describe the red or pink solutions labeled “2-4”? a. basic b. neutral c. acidic...
History, 21.11.2019 00:31