If I mix 250. grams of carbon, with 400. grams of chlorine, how many grams of carbon tetrachloride can be made? PLEASE INPUT YOUR ANSWER AS A WHOLE NUMBER AND DO NOT FORGET ABOUT ELEMENTS THAT ARE DIATOMICS. Your Answer: Question I options: Answer
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- CHEMICAL REACTIONS Interconverting number of atoms and mass of compound Calculate the number of nitrogen atoms in a 140.0 g sample of dinitrogen tetroxide (N,04). Be sure your answer has a unit symbol if necessary, and round it to 4 significant digits.afari File Edit View History Bookmarks Window Help www-awn.aleks.com alex Yahoo Search Results Yahoo Search Results ALEKS O STOICHIOMETRY Using the Avogad ro Number -23 g and a small airplane has a mass of 5000. kg. An aluminum atom has a mass of 4.48 x 10 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 aluminum atoms? x10 ? X How many moles of aluminum atoms have a mass equal to the mass of a small airplane? Expation Check 2019 McGraw- 80 AUG 19 IIA sample of an unknown pure substance X is analyzed and found to contain 8.40 g of Element E,, 9.60 g of Element E,, and no other elements. A similar analysis is made of three other substances that also only contain Elements E, and E,. The results are shown in the table below. Decide whether each of the other substances is also a pure substance. If you don't have enough information to decide, choose can't decide. mass of E1 mass of E, pure substance? substance pure substance A 29.7 g 11.3 g mixture O (can't decide) pure substance В 17.8 g 10.2 g mixture O (can't decide) pure substance C 22.4 g 29.6 g mixture (can't decide)
- O STOICHIOMETRY Using the Avogadro Number A copper atom has a mass of 1.06 x 10 -22 g and a penny has a mass of 2.5 g. 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 copper atoms? Round your answer to 3 significant digits. How many moles of copper atoms have a mass equal to the mass of a penny? Round your answer to 2 significant digits. Explanation CheckHow many carbon atoms are present in 3.95 moles of carbon atoms? Give your answer in scientific notation. Enter your answer in the provided box. x 10 (select) atoms of C= Interconverting number of atoms and mass of compound Calculate the mass of hydrazine (N₂H₁) that contains a trillion (1.00 x 10¹2) nitrogen atoms. Be sure your answer has a unit symbol if necessary, and round it to 3 significant digits. 0 x10 X 1/5
- How many moles does 120.30 g lithium represent? Use correct significant figures and units.The following chemicals will be available in the lab for this experiment: HẸHỘI NH₂ ANH Đ BaCI CaCl₂ FeCly NICI₂ HCI H₂0 K₂ CrO₂ KSCN ANH HEO Give the correct chemical formula for each of the requested chemicals. Enter the subscripts as normal characters. Ex: BaCl2 Be sure to enter any necessary parentheses. Hint: 1. After addition of what chemical will you expect to see iron precipitate from the solution? DMG 2. What chemical will be added to precipitate nickel from the solution? 3. What chemical will be added to selectively precipitate barlum from the solution (leaving the calcium ions in solution)? 4. What color is calcium oxalate? 5. One of the most common mistakes made by students in the lab is not carefully reading the labels on the reagent bottles. In this experiment, students often confuse ammonium carbonate and ammonium oxalate. What is the chemical formula for ammonium carbonate? 6. During the iron confirmation test, what chemical will be added to dissolve the FeCl 7. What…How many total atoms are there in 67.9 g of water (H, O)? total atoms: atoms Incorrect
- use the photo attached to Calculate the minimum mass of octane that could be left over by the chemical reaction.Round your answer to 2 significant digits.A compound is 80.0% carbon and 20.0% hydrogen by mass. Assume a 100.-g sample of this compound. How many grams of each element are in this sample? Enter the number of grams of carbon followed by the number of grams of hydrogen, separated by a comma (e.g., 30.0,70.0).11 Using the Avogadro Number -23 An oxygen atom has a mass of 2.66 x 10 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? Round your answer to 3 significant digits. 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 Mostly clear 4 g Search x10 X S © 2023 McGraw Hill LLC. All Rights R a