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Which is usually the larger number the mass number of an element or the formula mass of a compound that contains the element?
The formula mass of a compound that contains the element would be a larger number than the mass number of the individual element. The individual element would simply be the mass of just that one atom, where as the compound would be the mass of that atom plus the other masses of the other atoms that make up the compound.
ex. Oxygen-O has a mass number of about 16 grams.
Water-H2O has a formula mass of 2 x mass of Hydrogen-H (about 1) + the mass of Oxygen-O 16 = 18 grams.
A formula mass of 18 g is more than a mass number of 16 g.
What else can I help you with?
In the chemical formula of a binary ionic compound the last part is?
The last part in the chemical formula of a binary ionic compound is usually the anion, which is negatively charged and is represented by its element symbol. It is written after the cation in the formula to show the complete chemical composition of the compound.
To name a binary molecular compound you add the suffix -ide to the more ionic of the two elements?
That is partially correct. When naming a binary molecular compound, you add the suffix -ide to the second element in the formula, regardless of its ionic nature. The more electronegative element is usually listed first in the compound formula.
What does it mean when a compound contains parentheses?
It means that there is a certain group of atoms in it, usually an ion, that there is more than one of. For example, in Ca(NO3)2 , calcium nitrate, there are two nitrate, or NO3-, ions in each formula unit. Writing CaNO32 would be wrong because it would look like there were 32 oxygen atoms.
Is seawater a element or compound?
Seawater is a mixture of different elements and compounds. It is primarily composed of water and contains dissolved salts, minerals, and other substances. So, seawater is not an element but a complex mixture of different compounds.
This type of compound is usually formed when you burn an element in air?
Oxides are the type of compound that is typically formed when an element is burned in air. Oxides are compounds composed of an element combined with oxygen.
Why does oxygen not have a subscript?
Oxygen does not have a subscript since it is an element. Subscripts are usually found in the chemical formula of a compound and not an element.
A given compound usually contains the same relative number of atoms of its various elements true or false?
Today this affirmation is not generally valid.
What does it means when a compounds chemical formula does not include any numbers?
It means that you have one atom of each element in the formula
What is the chemical formula for phosphine. And why?
Formula: PH3Because any compound name with -ine or -ane ending usually refers to that compound of element which contains only atom(s) of the element and hydrogen. Some similar examples are Methane(CH4), Silane(SiH4), Borane(BH3), Hydrazine(N2H4), Azane or Ammonia(NH3), Ethane(C2H6), and lots more...
In the chemical formula of a binary ionic compound the last part is?
The last part in the chemical formula of a binary ionic compound is usually the anion, which is negatively charged and is represented by its element symbol. It is written after the cation in the formula to show the complete chemical composition of the compound.
Is copper an compound or element?
Copper is a chemical element. It can be a compound but copper is usually known as a chemical element.
What is the percent composition of ammonium carbonate?
Ammonium carbonate has the formula (NH4)2CO3. To calculate the percent composition, you first find the molar mass of each element and then divide the molar mass of each element in the formula by the formula mass of the compound and multiply by 100 to get the percentage.
Is copper oxide an element or a compound?
Copper is a chemical element. It can be a compound but copper is usually known as a chemical element.
To name a binary molecular compound you add the suffix -ide to the more ionic of the two elements?
That is partially correct. When naming a binary molecular compound, you add the suffix -ide to the second element in the formula, regardless of its ionic nature. The more electronegative element is usually listed first in the compound formula.
Is tin foil a element mixture or compound?
Tin foil usually refers to aluminum foil, which is considered a compound. It is considered a compound because even though it contains at least 80% aluminum, it usually has other components mixed in with it for durability and appearance.
A binary compound with a more positive or basic element or radical?
In a binary compound, the element that is more positive or basic is typically listed first in the chemical formula. This element is usually a metal or a positively charged ion, while the element listed second is often a nonmetal or a negatively charged ion. The more positive element is usually the one that forms cations in chemical reactions.
What element is in ferrochromium?
The alloy Ferrochrome contains two elements: Iron (Fe) and Chromium (Cr). Ferrochrome usually contains between 50-70% Chromium. It has the chemical formula of FeCr.
