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- 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 atomsDimensional analysis & conversions. If you need scientific notation in you answer, copy this for the exponential part: "x10^". An example would be 6.022x10^23 for Avogadro's number. Your answers need to have the correct number of significant figures. How many grams of hydrogen are in 10.45 moles of C4Hg? (The molar mass is not needed for this problem.)Dimensional analysis & conversions. If you need scientific notation in you answer, copy this for the exponential part: "x10^". An example would be 6.022x10^23 for Avogadro's number. Your answers need to have the correct number of significant figures. How many moles of oxygen are in 55.2 grams of KNO3? (The molar mass of KNO3 is 101.1 g/mol.)
- A compound contains only Mn and F. The ratio of Mn and F is 1.73 moles of F per 1 mole of Mn. If the empirical formula is expressed as MnFx, what is the numerical value for x? If the formula is MnF5, you would enter the number 5. Please enter a whole number (i.e. round the number to the nearest whole number) and DO NOT include any units.Dimensional analysis & conversions. If you need scientific notation in you answer, copy this for the exponential part: "x10^". An example would be 6.022x10^23 for Avogadro's number. Your answers need to have the correct number of significant figures. 0.39 moles of titanium is equivalent to how many titanium atoms?A sample of 0.215 M Co(NO3)2 contains 1.12 x 1022 nitrate ions. The volume of the sample is _______ mL. Report your answer to three significant digits and do not use scientific notation.
- O STOICHIOMETRY Daniela Using the Avogadro Number An oxygen atom has a mass of 2.66 × 10 - 23 g and a glass of water has a mass of 0.050 kg. Use this information to answer the questions below. Be sure your answers have the correct number of significant digits. What is the mass of 1 mole of oxygen atoms? |x10 olo Round your answer to 3 significant digits. Ar How many moles of oxygen atoms have a mass equal to the mass of a glass of water? Round your answer to 2 significant digits. Explanation Check © 2021 McGraw Hill LLC. All Rights Reserved. Terms of Use Privacy Center | Accessibility 12:47 AM P Type here to search 12/6/2021A chemist weighed out 80.3 g of beryllium. Calculate the number of moles of beryllium she weighed out. Round your answer to 3 significant digits. |mol ?How many grams F in 650.1 g Br2F6? Put the answer in the box in regular (non-scientific) notation. Use one figure past the decimal.
- Use the molar mass of Ca3(PO3)2 to calculate the moles in 10.0 g of calcium phosphite. Give your actual number. Use 3 significant figures, do not use scientific notation. (10.0 g CP)(––––––––) = ________ mol CPHow many grams F in 650.1 g Br2F6? Put the answer in the box in regular (non-scientific) notation. Use one figure past the decimal. Question 25 5 pts When vou nerform the following onerations how many significant figures shouldThis is the chemical formula for talc (the main ingredient in talcum powder): Mg;(Si,O3),(OH); An analytical chemist has determined by measurements that there are 17. moles of magnesium in a sample of talc. How many moles of hydrogen are in the sample? Be sure your answer has the correct number of significant digits. |mol