0
Calcium ions have a charge of +2 and chlorine ions have a charge of -1. Because a compound is neutral, you need two chlorine atoms per calcium atom, thus giving us the formula of CaCl2. This tells us that there is one calcium atom in the compound.
Wiki User
∙ 13y ago
Add your answer:
Earn +20 pts
What is the difference between calcium and calcium chloride?
Calcium chloride contains only two elements, calcium and chlorine, while calcium chlorate contains these two elements plus oxygen. The chlorine and oxygen in calcium chlorate are combined in a polyatomic ion with formula ClO3-1.
Why is calcium oxide CaO but calcium chloride is CaCl2?
in calcium chloride each calcium atom needs to lose two electrons but each chlorine atom needs to gain only one electron. This means that two chlorine atoms react with every one calcium atom to form calcium chloride. So the formula for calcium chloride is CaCl2.ca = proton number is 20 so the structure would be 2, 8 ,8 ,2cl = proton number is 17 so the structure would be 2 , 8,7To make it stable calcium has to lose 2 electrons and chlorine has to gain an electron. However if you add 2 to 7 in the chlorine it will make 9 so it will still be unstable therefore you need two chlorine atoms to share out the 2 atoms in calcium.
How many moles of calcium are in 15.5 g calcium chloride?
If grams/molar mass=moles, then first the molar mass of the compound must be found. CaCl2 has a molar mass of 110.984. Divide the number of grams, 15.5, by 110.984, and you get the number of moles. Now, seeing as calcium is not diatomic like oxygen or chlorine, there needs to be no conversion between the number of moles of calcium in the compound and the number of moles of calcium outside of the compound. atoms, the number of calcium atoms in the compound divided by one mole of the compound will give us the ratio. Conveniently enough, that ratio is one calcium atom per molecule of calcium chloride, meaning that for every one mole of calcium chloride, 1 mole of pure calcium can be extracted. So once you find the number of mole of CaCl2, that is the number of moles of calcium as well. This may be a little difficult to grasp, but I'm sure that your teacher, if you're a student, will be able to explain why rather well.
What script number tells of the preceding element in the compound?
The subscript number after the preceding element in a compound tells how many atoms of that element are in a molecule or formula unit of the compound. For example, the molecular formula for water, H2O indicates that there are 2 atoms of hydrogen and 1 atom of oxygen in one molecule of water. The formula unit for the ionic compound calcium chloride, CaCl2, indicates that there are 1 calcium ion and 2 chloride ions in a formula unit of calcium chloride.
What is the total number of atoms in 3.5 moles of calcium?
The total number of atoms in 3.5 moles of calcium is 21,0774929995.10e23.
What makes calcium chloride?
calcium and chlorine atoms
How many aoms of each element are present in calcium chloride?
Calcium is one element, and chloride is the element to make up the structure of calcium chloride, which is CaCl2.By the molecular formula, we see that there are two chloride atoms and one calcium atom in one molecule of calcium chloride. This means that there are two times as many atoms of chloride than calcium in the structure.If nothing else is stated, the number of moles is always equal to 1 for any element. One mole is equal to 6.022 x 1023 atoms. There are thus:1×(6.022 x 1023)=6.022 x 1023 atoms of calciumand2×(6.022 x 1023)≈1.2 x 1024 atoms of chloride
How many atoms of chloride are in 654.5 grams of calcium chloride?
science
What is the difference between calcium and calcium chloride?
Calcium chloride contains only two elements, calcium and chlorine, while calcium chlorate contains these two elements plus oxygen. The chlorine and oxygen in calcium chlorate are combined in a polyatomic ion with formula ClO3-1.
The formula contains one calcium atom and two chlorine atoms?
Calcium chloride.
Will calcium chloride give calcium oxide when heated?
Definitely not, if the heating is in the absence of oxygen, because calcium chloride can not change to calcium oxide without a source of oxygen atoms.
How many atoms in calcium nitride?
The formula unit for calcium nitride is Ca3N2. That would be 3 atoms of calcium and 2 atoms of nitrogen, for a total of 5 atoms in a formula unit.
Why is calcium oxide CaO but calcium chloride is CaCl2?
in calcium chloride each calcium atom needs to lose two electrons but each chlorine atom needs to gain only one electron. This means that two chlorine atoms react with every one calcium atom to form calcium chloride. So the formula for calcium chloride is CaCl2.ca = proton number is 20 so the structure would be 2, 8 ,8 ,2cl = proton number is 17 so the structure would be 2 , 8,7To make it stable calcium has to lose 2 electrons and chlorine has to gain an electron. However if you add 2 to 7 in the chlorine it will make 9 so it will still be unstable therefore you need two chlorine atoms to share out the 2 atoms in calcium.
The total number of calcium atoms in 80.0 grams of calcium is?
The total number of calcium atoms in 80,0 grams of calcium is 12,044 280.10e23.
How many chlorine atoms are there in two calcium chloride formula units?
4
How many chlorine atoms are in two calcium chloride formula units?
4
How many atoms are present in CaCl2?
There are three atoms in CaCl2 (calcium chloride) - one calcium atom and two chlorine atoms. It might be argued that there are ions inside the molecule instead of atoms. In that case there is one calcium ion and two chlorine ions.
