The following data were collected for several compounds of iron and oxygen:   Mass of iron that combines with 1 g of oxygen Compound A 3.49 g Compound B 2.33 g Compound C 2.62 g   Which calculations should be performed to illustrate the law of multiple proportions? Group of answer choices a. determine the ratio of the mass of iron combining for one compound by that for another compound b. determine the mass of iron combining with 1 g oxygen for each compound c. determine the ratio of iron and oxygen atoms for each compound d. convert the ratio into a whole number fraction

Number 63

Below are some objectives. Check if each objective possesses the SMART characteristics. If not, please suggest a revision for that objective. 1.  know the meaning of atomic number and atomic mass 2. describe, on the molecular level, the effect of heating and cooling on the motion of molecules of a gas 3.  identify different atoms  4. develop and use a model to describe how the total number of atoms does not change in a chemical reaction and thus mass is conserved. 5. understand the formation of ions in ionic compounds

Please help complete question 3, 4 and 5

Please help me answer the subpart d, e and f

Element C has three naturally occurring isotopes. The masses (amu) and % abundances of the isotopes are given in the table below. The average atomic mass of the element is ___amu?

1. Determine the number of protons and electrons in each of the following. Enter your answers numerically separated by a comma. Sr^2+ 2. name the ionic compound a. HgBr2 b. CoCl3 3. name the ionic compound containing a polyatomic ion a. Ba(OH)2 b. NH4Br c. NaBrO4 d.Fe(OH)2

In a lab experiment, 5.2 g of Mg reacts with sulfur to form 12.1 g of magnesium sulfide. How much magnesium sulfide would be formed if 5.2 g of Mg were reacted with 14.1 g of S?  gHow do you know? law of conservation of masslaw of multiple proportions    law of constant compositionlaw of definite proportions   In a lab experiment, 7.43 g of phosphorus reacts with bromine to form 64.93 g of phosphorus tribromide. How much phosphorus tribromide would be formed if 11.75 g of phosphorus reacted with 57.5 g of bromine?  gHow do you know? law of definite proportionslaw of constant composition    law of multiple proportionslaw of conservation of mass

The molecular mass of a compound containing 75.0 % carbon, 10.5 % hydrogen, and 14.6 % nitrogen is 384.6. Determine the molecular formula of this compound. a) How many carbon atoms are in the molecule? b) How many hydrogen atoms are in the molecule? c) How many nitrogen atoms are in the molecule?

Compare and contrast the following terms: “a mole” (as it is used in chemistry) and “a dozen” Give one main similarity and one main difference between the two concepts.