10. CHALLENGE. You have two distinct gaseous compounds made from element X and element Y. The mass percents are as follows: Compound I: 30.43% X, 69.57% Y Compound II: 63.64% X, 36.36% Y In their natural standard states, element X and element Y exist as gases. (Monatomic? Diatomic? Triatomic? That is for you to determine.) When you react "gas X" with "gas Y" to make the products, you get the following data (all at standard pressure and temperature): 1 volume "gas X" + 2 volumes "gas Y" → 2 volumes compound I 2 volumes "gas X" + 1 volume "gas Y" → 2 volumes compound II Assume the simplest possible formulas for reactants and products in the chemical equations above. Then, determine the relative atomic masses of element X and element Y and suggest identities.

Question 1 options: A. The Mole We will use the analogy of an elephant and its body parts to explore the concept of moles of compounds or elements. The elephant and the carbon tetrachloride, CCl4 molecule are the test cases. One elephant has one trunk and four legs One carbon tetrachloride molecule, CCl4, contains one carbon atom and four chlorine atoms 1 amu = 1.6606 x 10-24 g 1 dozen = 12 items 1 mole = 6.022 x 1023 items = Avogadro's Number Critical Thinking Questions: (Give your answers in terms of a number such as 17 or 3.25 x 1015 trunks)   1. How many trunks are found in one dozen elephants?

Please answer 5,6,7,8. I submitted already and only got answer for number 4. Please help with the rest.

4. Cane sugar (C12H22011) is a white, odorless, crystalline powder with a sweet taste. What is the percent composition of Hydrogen in cane sugar? (A.) 4.211% B.) 6.491 % C. 51.45% (D) 72.37% 5. If two samples labeled "NaClI" are analyzed and found to contain different percentages of chlorine, which of the following is probably true? A.) At least one of the samples must not be pure. B. The two samples must have been from different origins. C There must be at least two different compounds with the formula NaCl. D The ratio of the two different chlorine percentages must result in a small integer value.

Aluminum hydroxide is used as a deodorant and sometimes an antacid (something that prevents acid build up in the stomach). A tablet of antacid is found to have 4.33 x 1023 atoms of oxygen in the tablet, how many grams of aluminum hydroxide do you have? So I can understand properly, answer using the COAST template as follows (I will upvote). Collect and Organize What are you solving for? What should be the units of your final answer? Insert answer here. What information are you given? Insert answer here Analyze What information do you need? Insert conversion factors/ equations here How will you connect the information you have and the information you need to solve this problem? (Provide a unit plan) Insert unit plan here Solve Solve the problem. Be sure to show all units and write clearly. Insert answer here. Think Does your answer make sense? How do you know? Insert answer here Thank you

A compound composed of tin (Sn) and oxygen (O) weighs 8.42 g. Decomposition of the compound produced 6.63 g tin. What is the mass percent of oxygen in the compound?

Below are some objectives. Check if each objective possesses the SMART characteristics. If not, please suggest a revision for that objective. 1.  know the meaning of atomic number and atomic mass 2. describe, on the molecular level, the effect of heating and cooling on the motion of molecules of a gas 3.  identify different atoms  4. develop and use a model to describe how the total number of atoms does not change in a chemical reaction and thus mass is conserved. 5. understand the formation of ions in ionic compounds

Please help me answer the subpart d, e and f

If Epsom salt, MgSO45H2O, is heated to 250°C, all the water of hydration is lost. A student heats a 1.687 gram sample of the hydrate (MgSO4 5H2O) for 10 minutes at 250°C. After heating, 0.901 grams of MgSO4 remains. a. Calculate how many molecules of water per one MGSO4 formula unit the student experimentally determined. (MgSO4xH2O and find x). b. What was the student's percent error? c. Was the student's sample of MgSO4 5H2 2O pure? Explain.

awnser the following? 560g of silicon dioxide to molecules of silicon dioxide. (SiO2) 2. 1.9x1023 atoms of sulfur to grams of sulfur. (S) 3. 11.0g of sulfur hexafluoride gas to particles of sulfur hexafluoride. (SF6) 4. 9.8 particles of water vapor into grams of water vapor. (H2O)