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Which if these are a molecule Ca Mg Na H2O?
H2O. Notice the presence of two elements, H and O. Each of the other three is an element.
Which of these is molecule H20 CA NA MG?
H2O (water) is a compound molecule. Ca, Na, Mg are elemental metals. NB When writing elemental symbols;- Single letter symbols are always a CAPITAL letter e.g. 'O' oxygen. Double letter symbols are always written as , first letter is a capital letter and the second letter is lower/small case. e.g. 'Ca'( Calcium). Na(Sodium) , & Mg (Magnesium). NOT as given with all capital letters.
What is the single replacement reaction for Ca plus H2O?
CrCl6(AQ) + Mg(S) -> MgCl2(AQ) + Cr(S) CrCl6(AQ) + 3Mg(S) -> 3MgCl2(AQ) + Cr(S) Make sure both sides are balanced. The 3 in front of both of the Mg's is be cause 3*2=6, and you have to put a 3 in front to balance it out with the CrCl6,and the Mg's need to be balanced too so you another 3 in front of the Mg. Now the reaction is balanced.
What is the balanced equation for Mgo plus H2O?
The balanced equation for MgO + H2O is MgO + H2O -> Mg(OH)2.
How does the reactivity of the elements in group 2 change on descending the group?
As you go down the Group 2 (alkaline earth elements) elements they become more and more reactive. i.e. H2O+Ca=Ca(OH)2+H2 there is more hydrogen (g) created and at a faster pace than H2O+Mg=Mg(OH)2+H2.
What is the equation balance and identify the type of reaction of Ca Mg(NO3)2?
The balanced equation for Ca + Mg(NO3)2 would be Ca + Mg(NO3)2 -> Ca(NO3)2 + Mg. This is a double displacement reaction, where the calcium (Ca) and magnesium (Mg) ions switch places with the nitrate ions (NO3).
Complete the balance MgO plus H2O?
The reaction is:MgO + H2O = Mg(OH)2
How many atom are in mg(No3)2?
There are 9 atoms present in one molecule of Mg(NO3)2.
What does Ca and Mg in science stand for?
In chemistry Ca stands for calcium and Mg stands for magnesium.
What is formula is H2O?
water, H2OBut in chemistry the symbols must be upper case unless the symbol consists of two letters (Magnesium, Mg) and then the first letter must be upper case.
Is h20 and mg an element?
Yes, H2O is a compound made up of the elements hydrogen and oxygen. Mg, on the other hand, is the chemical symbol for the element magnesium.
What is the balanced equation for MgO H2O?
mgo+h2o=mg(OH)2 AAHana
