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CBSE Class 11-science Answered

total mass of 1 dozen carbon atoms is
Asked by gauravkhandelwal568 | 29 Jun, 2021, 02:31: PM
answered-by-expert Expert Answer
Number of atoms can be calculated by stoichiometry.
Cehmical equation for this process-
 
straight H subscript 2 SO subscript 4 space plus space CaCO subscript 3 space rightwards arrow CaSO subscript 4 space plus space straight H subscript 2 straight O space plus CO subscript 2 Molar space mass space of space CaCO subscript 3 space equals 40 plus 12 plus 48 equals 100 Moles space of space CaCO subscript 3 equals 25 over 100 equals 0.25 From space stoichiometry space it space is space clear space that space straight H subscript 2 SO subscript 4 space required space will space also space be equals space 0.25 space moles but space it space is space for space 100 percent sign space straight H subscript 2 SO subscript 4. For space 50 percent sign space straight H subscript 2 SO subscript 4 comma equals fraction numerator 0.25 cross times 100 over denominator 50 end fraction equals 0.5 space moles Mass equals Moles cross times Molar space mass space space space space space space space equals space 0.5 cross times 100 equals 50 space gram
Answered by Ravi | 01 Jul, 2021, 12:53: PM
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Asked by brijk456 | 22 Aug, 2019, 11:00: AM
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CBSE 11-science - Chemistry
how many gram in 99% pure 4.94 mole calcium nitrate tetrahydrate Ca(NO3)2.4H2O
Asked by theraianurag1 | 04 Jun, 2019, 01:00: PM
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CBSE 11-science - Chemistry
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Asked by Sridhar | 16 May, 2019, 12:05: PM
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CBSE 11-science - Chemistry
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CBSE 11-science - Chemistry
Calculate volume of 20% w/v NaOH required to compltely neutralise 50 ml of .25 M HNO3 solutions.
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