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Because it has decomposed to carbon dioxide and calcium oxide, and the carbon dioxide is gaseous, has dispersed into the natural atmosphere, and therefore is no longer part of the weight.
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When 84G of magnesium carbonate was heated 40G of magnesium oxide was collected why did the mas go down?
MgCO3 ---> MgO + CO2. Carbon dioxide is the byproduct and the lost mass corresponds to the weight of carbon dioxide lost.
How many numbers of electrons grained or lost for calcium?
2 electrons are lost from calcium, forming Ca2+ ion
How many electrons are gain or lost to form ions for calcium?
two are lost
Why is the probable charge of an ion of calcium positive?
calcium is a metal which ionizes by electron loss,so a calcium ion has lost to electrons and the positive charge indicates electron deficiency.
How many electrons must be gained or lost for calcium to attain a noble-gas electron configuration?
two electrons lost
When you heat 0.80g of copper carbonate and you weigh it after cooling how come the mass didn't change?
Heating copper carbonate (CuCO3) should result in the generation of copper oxide (CuO) and carbon dioxide gas (CO2). Therefore, the weight (mass) of the material remaining should decrease by an amount equal to the mass of CO2 lost. If the mass didn't change, you didn't heat the copper carbonate sufficiently to cause the decomposition.
When 84G of magnesium carbonate was heated 40G of magnesium oxide was collected why did the mas go down?
MgCO3 ---> MgO + CO2. Carbon dioxide is the byproduct and the lost mass corresponds to the weight of carbon dioxide lost.
Why ferromagnetism is lost on heating?
Heating randomizes the alignment of the atoms.
How many numbers of electrons grained or lost for calcium?
2 electrons are lost from calcium, forming Ca2+ ion
Where does lost energy in a rheostat go?
It is lost in heating the resistive material of the rheostat.
How many electrons are gain or lost to form ions for calcium?
two are lost
How do you determine whether an unknown substance is a carbonate or bicarbonate when comparing the mass of the substance before and after heating?
when bicarbonate is heated it decomposes into the carbonate, one water and one carbon dioxide. it is this loss of mass that will enable you to determine the identity of the anion in your unknown. make balanced equation. go moles to grams on each side using atomic mass then divide mass of carbonate by mass of bicarbonate.... aka product by reactant and if larger then 100 then it's a carbonate and subtract 100 from your answer and that is how much you gained... if smaller than multiply by 100% and then subtract your answer from 100 and that is how much you lost...
What is the chemical symbol for calcium that has lost 2 electrons?
Ca2+
A vitamins expiration date has passed It was supposed to contain 500 mg of Calcium but it has lost 325 mg of Calcium How many mg of Calcium is left?
175
You are 15 and you just lost 8lbs in a month is that healthy?
That depends on your present weight and how you lost the weight, if you lost it by not eating properly that is not healthy.
How do you calculate the degree of dehydration?
(Original body weight)-(current body weight)= weight lost (weight lost)/(original body weight) * 100 = % of dehydration (degree of dehydration)
What is the greatest weight lost?
most lost on a diet
