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4 a student performs the hcl tests on the three solid samples as described in step 5 of part b and gets the same result for the solid caco3 sample and the mixture which of the following statementsThe?
If the student obtains the same HCl test results for both the solid calcium carbonate (CaCO3) sample and the mixture, it indicates that the mixture contains calcium carbonate as one of its components. This suggests that the reaction of HCl with calcium carbonate is producing carbon dioxide gas in both cases, resulting in similar observable reactions. Thus, the mixture likely includes CaCO3 or a compound that reacts similarly to HCl.
How many atoms are in limestone and what kinds?
Limestone primarily consists of calcium carbonate (CaCO₃), which contains three types of atoms: calcium (Ca), carbon (C), and oxygen (O). Each formula unit of calcium carbonate contains one calcium atom, one carbon atom, and three oxygen atoms, totaling five atoms. The exact number of atoms in a sample of limestone will depend on the sample's size and the amount of calcium carbonate it contains.
Which is more basic calcium carbonate or calcium oxide?
Calcium oxide is a compound of calcium and oxygen and has the formula CaO. It is very basic (alkaline) and will react with water to form calcium hydroxide, Ca(OH)2 which is a strong base. Calcium oxide is commonly called lime or quicklime.Calcium carbonate is a compound of calcium, carbon, and oxygen with the formula CaCO3. It is mildly basic and will not react with water nor is it water soluble. It is commonly called calcite, limestone, or marble.
A student performs the HCl tests on the three solid samples as described in step 5 of part b and gets the same result for the solid CaCO3 sample and the mixture which of the following statements is?
If the student obtains the same result for both the solid CaCO3 sample and the mixture during the HCl test, it suggests that the mixture contains a significant amount of calcium carbonate or a similar compound that reacts with hydrochloric acid to produce carbon dioxide gas. This indicates that the mixture may not be purely composed of other substances or that the presence of CaCO3 is masking the characteristics of the other components. Therefore, the statement implying that the mixture has similar reactivity to CaCO3 is likely true.
How many atoms are in chalk?
Chalk primarily consists of calcium carbonate (CaCO₃). A single formula unit of calcium carbonate contains five atoms: one calcium (Ca) atom, one carbon (C) atom, and three oxygen (O) atoms. To determine the total number of atoms in a sample of chalk, you would need to know the amount of chalk, but each formula unit consistently contains five atoms.
How do you calculate the value of calcium carbonate in limestone?
You can calculate the value of calcium carbonate in limestone by determining the percentage of calcium carbonate present in the sample and then multiplying that by the market price per ton of calcium carbonate. The formula is: Value = (Percentage of calcium carbonate / 100) x Market price per ton.
4 a student performs the hcl tests on the three solid samples as described in step 5 of part b and gets the same result for the solid caco3 sample and the mixture which of the following statementsThe?
If the student obtains the same HCl test results for both the solid calcium carbonate (CaCO3) sample and the mixture, it indicates that the mixture contains calcium carbonate as one of its components. This suggests that the reaction of HCl with calcium carbonate is producing carbon dioxide gas in both cases, resulting in similar observable reactions. Thus, the mixture likely includes CaCO3 or a compound that reacts similarly to HCl.
How many moles of calcium carbonate are in 1.719 grams?
Calcium carbonate, CaCO3 has formula mass of 40.1+12.0+3(16.0) = 100.1Amount of CaCO3 = 1.719/100.1 = 0.0172molThere are 0.0172 moles of calcium carbonate in a 1.719 gram pure sample.
Is calcium carbonate a homogeneous or heterogeneous mixture?
Calcium carbonate is a pure chemical compound with the chemical formula CaCO3, making it a homogeneous substance. Homogeneous mixtures have uniform composition throughout, with the same properties and proportions of components in any given sample. In contrast, heterogeneous mixtures consist of visibly different substances that are not uniformly distributed. Calcium carbonate is commonly found in nature as limestone, marble, and chalk, but in its pure form, it is considered a homogeneous substance.
How many atoms are in limestone and what kinds?
Limestone primarily consists of calcium carbonate (CaCO₃), which contains three types of atoms: calcium (Ca), carbon (C), and oxygen (O). Each formula unit of calcium carbonate contains one calcium atom, one carbon atom, and three oxygen atoms, totaling five atoms. The exact number of atoms in a sample of limestone will depend on the sample's size and the amount of calcium carbonate it contains.
What experiment can you do to find out how much calcium carbonate there is in limestone?
To determine the amount of calcium carbonate in limestone, you can perform a titration using hydrochloric acid. By reacting a known mass of limestone with hydrochloric acid, you can measure the volume of acid required to neutralize the calcium carbonate. This information can then be used to calculate the amount of calcium carbonate present in the limestone sample.
What is pure sample of calcium?
A pure sample of calcium is a silver-white metal that is highly reactive and not typically found in its elemental form in nature. It is commonly found in compound form, such as calcium carbonate in rocks like limestone, or in calcium phosphate in bones and teeth.
What is the percent of oxygen in calcium carbonate?
imagne caco3 as 100 gram sample. so ca is 40% since ca is 40amu and carbon is 12% since c is 12amu and o is 16 amu but you have 3 o so 3*16 48 hence 48% is 0 so the calcium is 40% of caco3 or calcium carbonate
Which is more basic calcium carbonate or calcium oxide?
Calcium oxide is a compound of calcium and oxygen and has the formula CaO. It is very basic (alkaline) and will react with water to form calcium hydroxide, Ca(OH)2 which is a strong base. Calcium oxide is commonly called lime or quicklime.Calcium carbonate is a compound of calcium, carbon, and oxygen with the formula CaCO3. It is mildly basic and will not react with water nor is it water soluble. It is commonly called calcite, limestone, or marble.
How can you tell difference between calcium oxide and calcium carbonate?
There are several tests, ranging from a product test (react the sample with acid and then find out what is produced) to a phase test (heat a sample to the midpoint of the melting points of the "suspects" and observe its state).
How a pure sample of iodine could be obtained from a mixture of iodine and sulphur?
Iodine is soluble in carbon tetrachloride.
What type of test can be used to identify calcium carbonate?
One common test is the acid test, which involves adding a few drops of acid (such as hydrochloric acid) to the sample. Calcium carbonate will fizz and produce bubbles, indicating the presence of carbonate ions. This reaction occurs because calcium carbonate reacts with the acid to produce carbon dioxide gas.
