- What is the molar mass of a hypothetical element that is 48.3%X-51,24.3%X-52, and 27.4%X-53? Tiprapy...
Can you explain it please? Complete the table: Grams of Molar element mass element 32g Manganese Moles of element Atoms of element 2.3 x 10-5 moles Zr 2.2 x 1022 Atoms of gold 53 mg carbon 25.8 mol W 4.984 x 1028 atoms Ar 500 kg He
The concentration of a hypothetical molecule, A5B6C2, is 943 mg/dL. The molar masses of the hypothetical elements are in the table below. What is the molarity of this molecule in the solution? Element Molar Mass (grams/mole) A 10.852 B 1.0797 C 15.35
If 1.00 g of element X reacts with 2.00 g of element Y to produce 3.00 g of a compound with the formula X2Y3, and the molar mass of Y is 50.0 g/mol, what must be the molar mass of X? (a) First of all, after reading the question, which element do you know more about, X or Y? (b) How many moles of Y are in 2.00 g of Y, and therefore must be in the X2Y3 ? (c)...
6. If 2.00 moles of a material has a mass of 32.0 grams, what is its molar mass? What element is this material composed of? 7. Convert 35.0 g of NaCl to moles of NaCl. 75
Sugar is easily soluble in water and has a molar mass of 342.30 g/mol. What is the molar concentration of a 245.6 mL aqueous solution prepared with 78.3 g of sugar? Suppose you have 350.0 mL of a 0.450 M sodium hydroxide solution. How many moles of sodium hydroxide are in the solution? Calculate the percent by mass of a solution made from 17 g NaCl (the solute) and 67 g water. Suppose you need to prepare 141.5 mL of...
Compound X has a molar mass of 283.89 g.mol and the following composition: element mass % phosphorus 43.64% oxygen 56.36% Write the molecular formula of X.
Part A What is the relative atomic mass of a hypothetical element that consists of the following isotopes in the indicated natural abundances? Isotope Isotopic mass Relative abundance (amu) (%) 78.9 82.9 13.0 120 869 750 Express your answer to three significant figures and include the appropriate units.
Part A What is the relative atomic mass of a hypothetical element that consists of the following isotopes in the indicated natural abundances? Isotope Isotopic mass (amu) Relative abundance (%) 1 81.9 12.2 2 84.9 15.0 3 88.9 72.8 Express your answer to three significant figures and include the appropriate units. Part B What is the relative atomic mass of the element that consists of the following isotopes in the indicated natural abundances? Isotope Isotopic mass (amu) Relative abundance (%)...
Compound X has a molar mass of 180.16 g-mol and the following composition: element mass % carbon 40.00% hydrogen 6.71% oxygen 53.29% Write the molecular formula of X. Х ?
Compound X has a molar mass of 134.13·gmol−1 and the following composition: element mass % carbon 44.77% hydrogen 7.52% oxygen 47.71% Write the molecular formula of X .