Answer: An atom is the sub-component of a molecule, or the smallest unit of matter. It is the smallest part an element can divide into. A molecule is made up of atoms that are bound by ionic, covalent or metallic bond.
Explanation:
उत्तर : गुरुत्वाकर्षण का सार्वत्रिक नियम :
इस विश्व का प्रत्येक पिंड दूसरे पिंड को एक बल से अपनी ओर आकर्षित करता है जो दोनों पिंडों के द्रव्यमानों के गुणनफल के समानुपाती होता है तथा उनके बीच की दूरी के वर्ग के व्युत्क्रमानुपाती होता
The correct answer is option 1. It should be noted that a catalyst does not lower or decrease the activation energy because instead it provides an alternative route for the reaction to proceed. This speeds up a chemical reaction without being changed.
Answer:
C contains one N and three I atoms
Answer: 10.3 grams of Copper oxide is left unreacted.
Explanation:
To calculate the moles :
The balanced chemical reaction is:
According to stoichiometry :
1 moles of require = 1 mole of
Thus 0.5 moles of will require= of
Thus is the limiting reagent as it limits the formation of product and is the excess reagent.
moles of CuO left = (0.63-0.5) mol= 0.13 mol
Mass of left =
10.3 grams of Copper oxide is left unreacted.