Web19 apr. 2024 · 2.0 moles. Explanation: The relationship between the number of moles of a given substance present in a sample and the mass of the sample is given by the molar mass of the substance. For any chemical species, you have. molar mass = the mass of exactly 1 mole. water has a molar mass of . 18.015 g mol. −. 1. which means that . 1. mole of … Web18 apr. 2024 · Since you are only given two significant figures you can simplify it as: is equal to 12 x 16 + 1 x 12 + 16 x 6 = 300 grams per mole 90 grams C16H12O6 = 90/300 moles = 0.3 mole Number of molecules = 0.3 x 6.02 x 10^23= 1.8 x 10 23 Molecular weight 180 and total is 0.5 moles or 3.0 x 10^23 molecules The molar mass of glucose is 180 g/mol.90 …
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WebA compound is found to contain 63 % iron and 36% sulfur. Find its empirical formula. 2. A compound is found to contain 26% potassium, 35% chromium, and the remainder oxygen. Find its empirical formula. 3. A 60 g sample of tetraethyllead, a gasoline additive, is found to contain 38 g lead, 17 g carbon, and 3 g hydrogen. Web29 jan. 2024 · One mole of sodium (Na) is 22.99 g, and 1 mole of chlorine is 35.45 g. For sodium chloride (NaCl) they are in a ratio of 1:1 so the molar mass of NaCl is 22.99 + … five ingredient mac n cheese
How many hydrogen atoms are in 1g of water? – WisdomAnswer
Web2 sep. 2024 · Dividing the water mass (answer from #3) by the molar mass will give you the moles of water in the hydrate sample. Dividing moles of water (answer to #6) by moles of salt (answer to #5) should give you a number pretty close to a whole number - that whole number is your value for X in the hydrate formula. Hope this helps! Upvote • 0 Downvote Web36 g× 18.01 g1 mol =2.00 mol Step 2: We'll use the following relationship: 1 mol6.02×10 23 Using the moles of H 2O that were just obtained, we can use Avogrado's number to perform dimensional analysis to cancel out units of mol to end up with molecules: 2.00 mol× 1 mol6.02×10 23molecules=1.204×10 24 molecules Web11 mrt. 2024 · One mole of hydrogen molecule contains 6.022 × 10²³ molecules. molar mass of water = 18 g/mol 2 moles of water = 36 g. Then, 2 moles of H₂ = 2 × 6.022 × 10²³ = 1.2 × 10²⁴ molecules These much hydrogen molecules produces 36 g of water. Thus, mass of water produced by 1.11× 10²⁴ hydrogen molecules is : (1.11× 10²⁴ × 36 )/1.2 × … can i put a frog in my fish tank