Homework 8 1. Calculate the number of moles of Mg(NO3)2 in 0.432 g of Mg(NO3)2. AND calculate the number of N and...
Calculate the moles of O atoms in 53.4 g of Sr(NO3)2.
Calculate the moles of O atoms in 0.619 g of Ca(NO3)2.
helppp 1- Calculate the following: A- Number of moles in 10 gram of Cr(NO3)s. B- Number of Atoms in 10 gram of Cr(NO3)s. C- Number of molecules in 10 gram of Cr(NO3)s. D- Number of grams in 10 atoms of Cr(NO3)s. 2. Find the % composition of all individuals in, KBrOn. %K= %Br= %0=
1- Calculate the following: A- Number of moles in 10 gram of Cr(NO3). B- Number of Atoms in 10 gram of Cr(NO3). C- Number of molecules in 10 gram of Cr(NO3). D- Number of grams in 10 atoms of Cr(NO3). 2. Find the % composition of all individuals in, KBrO. %K= %Br= %0= 3. How many gram of Oxygen is in 10 gram of C (NO3),? 4- Find the empirical formula of a compound with the following composition Hg33.3% S...
1. Calculate the number of moles of magnesium, chlorine, and oxygen atoms in 3.80 moles of magnesium perchlorate, Mg(ClO4)2. Express the number of moles of Mg, Cl, and O atoms numerically, separated by commas. 2. A sample of propane, C3H8, contains 10.4 moles of carbon atoms. How many total moles of atoms does the sample contain? Express the total number of moles of carbon and hydrogen numerically. One molecule of ozone, O3, contains three oxygen atoms. Similarly, 1 mole of...
Enter your answer in the provided box. Calculate the moles of O atoms in 70.6 g of Mg(NO3)2.
5. Calculate the number of moles of NO3 ions in 30.5 moles of Pb(NO3)2.
Part 1 (1 point) A chemist makes up a solution by dissolving 25.0 g of Mg(NO3)2 in enough water to produce a final solution volume of 141 mL. To calculate the molarity of the solution, what additional information is needed? And See Periodic Table ’See Hint Choose one: the molar mass of Mg(NO3)2 the volume of water used the mass of the water added the density of the Mg(NO3)2 Part 2 (1 point) See Hint Calculate the number of moles...
Calculate the number of moles and the mass of negative ions present in 15.67 g of magnesium nitrate, Mg(NO3)2.
answer all please 1- Calculate the following: A- Number of moles in 10 gram of Cr(NO3)s. B Number of Atoms in 2.5 gram of Cr(NO3)s C- Number of molecules in 100 gram of Fe(NO3)s. D- Number of grams in 10 20 atoms of Fe(NO3)s. 2- Complete the following table: Element С н % Composition 71 Empirical Formula Element Н % Composition 65.4 5.5 29.1 Empirical Formula 29