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What is a composition of a compound shown by?
The composition of a compound is shown by its chemical formula, which represents the types and number of atoms present in the compound. The chemical formula provides information about the elements present in the compound and their ratio, allowing for identification and understanding of the compound's structure and properties.
Which of the following best describes how molecular mass and formula mass are related to the mass of a compound?
The formula mass of a compound is the mass in grams of Avogadro's number (6.0221415 × 1023) of molecules. For example NaCl (table salt) has a formula mass of 58.44277 (Na 22.9897, Cl 35.453) Avogadro's number of them weighs 58.44277 grams.
How do you find formula weight of a compound?
You start with the mass of the compound. This you divide by the total molecular mass of the compound (the atomic mass of 1 molecule) and you multiply this by the amount of atoms 1 molecule consists of.
Which is the best type of graph to show the weights of fifty dogs?
A bar graph would be a suitable option to show the weights of fifty dogs, with each bar representing an individual dog's weight. This allows for an easy comparison of the weights and helps identify any outliers or patterns in the data.
What is the empirical formula for a compound that has the following composition 39.81 percent copper 20.06 percent sulfur and the remaining oxygen. Could this also be the molecular formula?
39.81% Cu20.06% S?% OFirst you have to find the percent of oxygen in the compound. All you have to do is add the remaining percent to make it equal to 100%.100 - 39.81 - 20.06 = 40.13% oxygenFind the atomic weights for each element. Take the percents and take off the percent sign and switch it to grams. Then divide the percents with the atomic mass to get moles.Atomic masses:Cu- 63.5S- 32.1O- 16.0percent / atomic mass = # molesCu 39.81g / (63.5g) = .627 molesS 20.06g / (32.1g) = .625 molesO 40.13g (16.0g) = 2.51 molesFind the ratio of Cu:S:O (it doesn't matter what order). In order to do this, divide all numbers by the smallest number (.625).S .625 / .625 = 1Cu .627 / .625 = 1O 2.51 / .625 = 4.02When doing empirical formulas, all digits are uncertain to the effect of +/- .02So we can say that oxygen is really 4. Therefore, the atoms are in a ratio of 1:1:4 making the empirical formula: Cu1S1O4 or CuSO4Looking at the empirical formula, we can say that it is probably the real formula because it forms a copper ion (Cu) and a sulfate ion (SO4). Also, the name is Copper (II) sulfate
The formula weight of a compound is determined by adding up the individual weights of every in that compound.?
atom lulz
The formula weight of a compound is determined by adding up the individual weights of every?
Element in the compound. Example: H2O = 18 O= 16 H= 1 2X1 = 2 16+2=18
What is an Experimental mass ratio?
Experimental mass ratio refers to the ratio of the mass of a compound's empirical formula to the mass of its molecular formula. It is determined in the laboratory through experimental data, such as measurements of molar masses or molecular weights. This ratio can help identify the correct molecular formula of a compound based on its empirical formula.
How do you calculate the equivalent weight of compound?
the sum of the atomic weights for all the atoms in the formula
What is a composition of a compound shown by?
The composition of a compound is shown by its chemical formula, which represents the types and number of atoms present in the compound. The chemical formula provides information about the elements present in the compound and their ratio, allowing for identification and understanding of the compound's structure and properties.
Is lead weights compound?
No - lead weights are usually fairly pure lead and thus an element and not a compound.
Is lead weights a compound?
No, lead is an element on the periodic table; it's symbol is Pb.
Which of the following best describes how molecular mass and formula mass are related to the mass of a compound?
The formula mass of a compound is the mass in grams of Avogadro's number (6.0221415 × 1023) of molecules. For example NaCl (table salt) has a formula mass of 58.44277 (Na 22.9897, Cl 35.453) Avogadro's number of them weighs 58.44277 grams.
What information is needed to find the percent of composition?
- The percent composition of a compound is established after the chemical analysis of this compound and the knowledge of the chemical formula.- If you know the chemical formula you need to know the atomic weights of the components to calculate the percent composition.
What is determined by an empirical formula?
Yes, but you also have to pay attention to how many molecules of each element are in the compound. For instance: H2O (water) The weight of H is roughly 1 and the weight of O is roughly 16, but formula weight of water is NOT equivalent to just 1 + 16 = 17 You have to be sure that you account for the total amount of molecules so since there are 2 H present you have to multiply the weight of H by 2; 1 x 2 = 2 Now you have the weight of all the H present and just add that to the weight of the single O molecule 2 + 16 = 18; thus the formula weight of water is 18.
How can you find the mass of any compound?
The molar mass of a compound is the sum of atomic weights of elements in the molecule.
How do you find formula weight of a compound?
You start with the mass of the compound. This you divide by the total molecular mass of the compound (the atomic mass of 1 molecule) and you multiply this by the amount of atoms 1 molecule consists of.
