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diff --git a/1427/CH34/EX34.19/34_19.sce b/1427/CH34/EX34.19/34_19.sce
new file mode 100644
index 000000000..f32e2de3c
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+++ b/1427/CH34/EX34.19/34_19.sce
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+//ques-34.19
+//Calculating energy of light required to decompose 1g of ammonia
+clc
+w=200;//wavelength (in nm)
+QE=0.14;//quantum efficiency (in molecule/photon)
+m=1;//mass of ammonia given
+n=m/17;//moles of ammonia given
+q=(n/QE)*(2.859/w)*10^7;
+q1=q*4.184;
+printf("The energy of light required is %d cal or %d J.",q,q1);