Answer:
D results are based on an undisclosed process or procedure
Explanation:
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
Answer:
See explanation
Explanation:
Crystallization is a separation technique used to obtain pure crystals of a substance from an impure mixture of solid substances.
The impure solid is dissolved in an appropriate hot solvent. This hot solvent is able to effectively dissolve the solid. However, as the solution is allowed to cool, the pure solid separates out of the solution as crystals.
The solid is now filtered to obtain the pure solid. The solid is also washed and dried to remove any solvent contaminant.
I just really need points sorry for commenting
One of the clues are that there will be a change in temperature. Usually when a reaction takes place heat will be absorbed or released resulting in a change of temperature. Hope this helped!