To answer this question, you need to know the molecular weight of zinc so you can determine how many mol zinc you have. Zinc molecular weight is 65.38gram/mol. Then the calculation would be: 48.3gram/(<span>65.38gram/mol)= 0.74 mol
Since you are asked the amount of atom, you need to multiply the unit in mole with Avogadro number. The calculation should be: 0.74 * 6.02 * 10^23= 4.45* 10^23 molecules</span>
Answer:
The 2 zeros after the decimal point
The types of proton that will cause spin-spin splitting of each other's 1H NMR signals are the protons that are not in same chemical environment.
<h3>What are the protons that cause splitting?</h3>
The NMR spectroscopy is the acronym for the term nuclear magnetic resonance. This process could only be carried out on a nucleus that has an odd number of protons such as 1-H and C-13.
The splitting would be caused by the protons that are not in the same chemical environment as others. This implies that, the types of proton that will cause spin-spin splitting of each other's 1H NMR signals are the protons that are not in same chemical environment.
Learn more about proton splitting:brainly.com/question/11431603
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Answer:
31. C
32. D
33. B
Explanation:
31. A plant cell is an eukaryotic cell i.e. it contains a membrane-bound nucleus, located CENTRALLY. The nucleus is the largest organelle in the plant cell. The cell/plasma membrane bounds the cell while the chloroplast organelle (site of photosynthesis) is also located in the plant cell. Based on this description, the image in OPTION C is correct.
32. Pottasium (K) is a highly reactive group 1 element. As stated in this question, pottasium reacts vigorously with water (H2O). This reactive property of K element is due to its valence electrons. However, elements in the same group as pottasium i.e same column on the periodic table will have the same number of valence electrons, hence, will behave chemically similar. Therefore, elements in the same column as pottasium will react the same way with water.
33. A reactant is a an element/compound in a chemical reaction that gets used up to form new products. They are usually the starting materials located on the left side of any equation. In this equation shown as:
2CuO + C → 2Cu + CO2
CuO and C are the REACTANTS while Cu and CO2 are the products.
