Calculate the mass in grams of (4.33 x 10^21) molecules of SO_3. Express your answer to the correct number of significant figures,in significant and include the unit with your answer.
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- NoneIbuprofen, the anti-inflammatory drug in Advil, has the formula C13H18O2 What is the empirical formula of ibuprofen? Express your answer as a chemical formula. What is the molar mass of ibuprofen? Express your answers to four significant figures and include the appropriate units. How many grams of C are in 0.465 g of ibuprofen? Express your answer using three significant figures and include the appropriate units. How many moles of ibuprofen are in 2.35 g of ibuprofen? Express your answer using three significant figures and include the appropriate units.What is the mass (in kg) of 6.89 × 10^25 molecules of carbon dioxide? Give the answer as a number. The units are understood to be kg.
- How many C atoms are present in the sample of C3H3 with mass 7.11 g? Avogadro's number is 6.022 x 1023. Enter your answer using scientific notation and to three significant digits. C atomsUse the molar mass of Ca3(PO3)2 to calculate the moles of oxygen in 6.66 x 106 g of CP. Give your actual number. Use scientific notation with E representing the exponent and no spaces. For example, 1 mol = 6.022 x 1023 would be 6.022E23. (6.66 x 106 g CP)(––––––––––) = ____________ mol CP (––––––––––) = __________ mol OWhat is the mass, in grams, of 1.40×1021 molecules of aspirin, C9H8O4C9H8O4? Express your answer using three significant figures.
- What is the mass of 3.5 x 10^-3 molecules of copper (II) carbonate? Use correct significant figures and units.How many formula units are in 30.912 g of potassium permanganate? Give answer to the correct number of significant figures. If exponents are needed, use the format 1.23E+4. Do not include unit or substance for this answer.What is the mass of 0.207 moles of C3H9O4? Note: Express your answer in proper significant figures. Write only the numerical answer. Do not include the unit. If your answer is in exponential form, example: 2.05 x 1024, use the following format: 2.05e24
- What is the mass of (8.00*10^ ^ 0) number of calcium atom ? Report your answer to 3 significant figures and include the unit in your answer .Convert (8.808x10^24) molecules of water to grams of water. Avogadro's Number is (6.02x10^23). You must enter your answer in scientific notation. For example, 25 would be expressed as 2.5x10^1. Note: Your answer is assumed to be reduced to the highest power possible.The chemical formula for dimethyl ether is: CH;OCH3 Calculate the molar mass of dimethyl ether. Round your answer to 2 decimal places. 1 x10 |g.mol