Complete the table: Element Mass Moles Number of Atoms Na 37.0 mg _____ _____ C _____ 1.95 _____ V _____ _____ 213 Hg 1.86 kg _____ _____

Calculate the mass of 14.4 moles HgO. (In Kilograms)

Write the chemical formula for each compound, and then calculate the amount in moles in each sample. d. 78.1 kg of copper(II) sulfate pentahydrate

Elements B and N form a binary compound BxNy. When 12 grams of this compound was made from its elements, it consumed 7 grams of elemental nitrogen. A) Find the empirical formula of the compound: The mass of N atoms in the 12 g sample of the compound is ____________ g The number of moles of N atoms in the 12 g sample of the compound is ______mol The mass of B atoms in the 12 g sample of the compound is ____________ g The number of moles of B atoms in the 12 g sample of the compound is ____ mol The empirical formula is:

Consider 68.9 g of Pb(SO4)2 to answer the following questions. a. How many moles of Pb(SO4)2 is this? ____________________________ b. How many molecules of Pb(SO4)2 is this? ____________________________ c. What is the weight of one molecule of Pb(SO4)2 in amu? _________________ d. How many grams are 4.23 x 1022 molecules? __________________________

A east.cengagenow.com ral Chemistry I E OWLV2 | Online teaching and learning resource from Cengage Learning G According to the following reaction, how many grams of barium ch [References) Use the References to access impertant values if needed for this question. A 3.607 g mixture of SRCO, and Sro is heated. The SrCO, decomposes to SrO and CO,. What was the mass percentage of SrCO, in the mixture if the mass after heating is 3.202 g? 88.8 % 42.4 % O 1.73E-3 % O 0.377 % 37.7 % Submit Answer Try Another Version 5 item attempts remaining (Previous Next Cengage Learning Cengare Technlcal Support