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60 solutions

Atomic Theory

Q. Which quantity or quantities must always be the same on both sides of a chemical equation? Check all that apply.

Solved • Mar 10, 2020

Atomic Theory

Q. A certain compound is made up of two chlorine atoms, one carbon atom, and one oxygen atom. What is the chemical formula of this compound? Express your answer as a chemical formula.

Solved • Feb 20, 2020

Atomic Theory

Q. you carefully weigh out 14.00g of CaCO3 powderand add it to 56.70 g of HCl solution. You notice bubbles as a reaction takes place. You then weight the resulting solution and find that it has a mass of 64.96 g. The relevent equation is CaCO3 + 2HCl = H2O + CO2+CaCl2. Assuming no other reactions take place. what is the mass of CO2 produced

Solved • Feb 27, 2020

Atomic Theory

Q. Determine the number of each type of atom in each formula: Be(NO3)2

Solved • Feb 27, 2020

Atomic Theory

Q. The elements X and Y combine in different ratios to form four different types of compounds XY, XY2, XY3, and XY4. Consider that there is enough of each compound to contain 2 g of X. in XY the mass of X is 2 g and the mass of Y is 4 g. Arrange the following ratios in order of their increasing value. Rank from highest to lowest ratio. To rank item as equivalent, overlap them.

Solved • Feb 8, 2020

Atomic Theory

Q. Calculate the mass ratio of S to O to the mass ratio of S in SO2. Consider a sample of SO in which the mass of S = 32 g and the mass of O = 16 g. Assume that in SO2 that there is also 32 g of S. Express your answer numerically.

Solved • Feb 8, 2020

Atomic Theory

Q. Samples of three different compounds were analyzed and the masses of each element were determined. If you were John Dalton and had never heard of a mole, which of the following would you think were possible sets of formulas for the compounds A, B, and C, respectively? Check all that apply. a) N2O, N2O4, N2O5 b) NO2, NO8, NO10 c) NO, NO2, NO4 d) NO4. NO10, NO5

Solved • Feb 8, 2020