Biology

Biology, 11.07.2019 23:30, alexsrules9711

2. given that most biochemical (other than coal) rocks react with hydrochloric acid, what does that tell
you about organisms?

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Biology, 22.06.2019 02:00, milkshakegrande101

2. given that most biochemical (other than coal) rocks react with hydrochloric acid, what does that tell you about organisms?

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Name two rocks that would react to hydrochloric acid and why?

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Physics, 22.09.2019 07:30, Jmajano99

Asolution of hydrochloric acid is placed on a balance. magnesium metal is added and the mass is recorded. the solution is stirred and the mass of the solution is recorded every 10 minutes. the following data is collected: time (mins) mass of hydrochloric acid and magnesium (g) 0 160.0 g 10 156.5 g 20 152.0 g 30 147.5 g 40 142.5 g what does the data show is occurring? the hydrochloric acid and magnesium metal react to form a soluble compound. the hydrochloric acid and magnesium metal do not react. the hydrochloric acid and magnesium metal react to form a precipitate. the hydrochloric acid and magnesium metal react to form a gas.

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Chemistry, 08.10.2019 05:10, pressure772

Calcium carbonate is added to separate solutions of hydrochloric acid and ethanoic acid of the same concentration. state one similarity and one difference in the observations you could make. (i) write an equation for the reaction between hydrochloric acid and calcium carbonate. (ii) determine the volume of 1.50 mol/dm–3 hydrochloric acid that would react with exactly 1.25 g of calcium carbonate. (iii) calculate the volume of carbon dioxide, measured at 273 k and 1.01×105 pa, which would be produced when 1.25 g of calcium carbonate reacts completely with the hydrochloric acid.

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