Calcium carbonate

This gas added to calcium hydroxide solution produced carbon dioxide. This experiment proved that carbon dioxide was present in seashells. When shells sink to the ocean floor they are eventually turned into sedimentary rocks and as the ocean gets more acidic and its PH drops…

People can stain their teeth in more ways than one. A big silent killer is drinking anything that is highly acidic. According to Professor Laurence Walsh, some highly acidic drinks, like orange juice, can do more damage to teeth than soft drinks. Soft drinks and citric juices are the top contenders in dental erosion. The reason being there are acids contained in these drinks that dissolve any hard surfaces of the teeth that are exposed, such as the enamel. If the protective enamel is gone, the…

We looked for the presence or absence of certain soil horizons and properties, and the presence of clay or carbonate features. Comparing soil development and soil properties, we found that site 2 was the oldest. This site was fairly shallow in depth (~65cm) and contained a Btk and petrocalcic K-horizon with stage 3 carbonate morphology. This soil was situated on old Quaternary alluvium. The approximate age of this surface was determined to be between 500 and 200 million…

This means there is not enough carbonate or calcium carbonate which forms shells and skeletons dramatically decreasing the coral’s reproduction (3). This problem began with the start of the industrial revolution when increases in industrial and agricultural activities caused more carbon dioxide to…

Annual global carbon dioxide emissions increased by over 20% between 1997 and 2009 from approximately 24 billion tons to over 30 tons of carbon dioxide (CO2) per year (Friedlingstein et al., 2010). The implications of this are vast and are by no means limited to global warming. For many millions of year prior to industrialization, ocean pH levels remained stable; however, high levels of anthropogenic carbon emissions in the near 200 years since the industrial revolution, have caused fundamental…

H2 . The Calcium in the unknown reacted with water, rather than dissolving. Nitrate is always soluble in water, but calcium will form a precipitate of Ca(OH)2 since it reacts with water. The precipitate will have a solubility 0.79g/15mL, or…

sulfuric acid D. 50 mL of 8 M sulfuric acid 5. Why does the rate of reaction increase when powdered calcium carbonate is used instead of marble chips? A. The powdered calcium carbonate acts as a catalyst. B. There is an increase of the particle size of the calcium carbonate. C. There is an increase of the surface area of the calcium carbonate. D. There is an increase of the concentration of the calcium carbonate. 6. Which of the following reactions will start with the highest rate? A. 5 g of…

levels of CO2 in the atmosphere. The excess CO2 dissolves in the ocean and becomes corrosive carbonic acid. Corals and other shell-producing organisms rely on calcium carbonate in the ocean to produce new shell, but if the ocean becomes too acidic, there will not be enough carbonate for these organisms to use. With smaller amounts of calcium carbonate in the ocean, these organisms will soon face death. Because of humans burning fossil fuels and increasing the amount of CO2…

1.Soil forming factors 1) Climate- The climate of the Pullman series leans on the side of ustic and is in fact a Paleustoll, but can boarder on aridic at times. Ustic is an intermediate between udic and aridic with the winters being relatively dry, and the growing season is characterized by plant available moisture between significant periods of drought. The Pullman series meets this descriptions, in that it’s driest periods lie between July and August, and then December through February, with…

(phenolphthalein – an acid-base indicator)? (1) - How does compound X react with C20H14O4 (phenolphthalein)? (2) - How does compound X react with water? (3) - How does compound X react with hydro chloric acid (HCL)? (4) 3. Predictions. - Compound X is calcium carbonate (CaCO3). - (1) When compound X is heated and reacted with C20H14O4, the substance will turn pink. - If a red litmus paper is dipped in the substance moistened with de-ionized water, it will turn blue. - (2) When C20H14O4 is…