Smashing a rock is not chemical tgats your answer
Answer:
Energy can neither be created nor destroyed, but it does change its form. And not all forms of energy are usable and it gets dissipated as heat energy and sound energy. The energy that is wasted cannot be recovered.
Explanation:
According to the law of dilution,
The given data is as follows.
= 0.4782, 
= ?
= 0.025
, 
= 250 mL
Hence, we will calculate the value of as follows.
= 
= 13.07
Thus, we can conclude that we need 13.07 mL 0.4782 M sodium thiosulfate solution using pipette.
You'll need Avogadro's number for this. NH3 has 1 Nitrogen and 2 Hydrogen. You'll multiply the molar mass of each times Avogadro's number. So:
molar mass N x 6.022x10^23 x 1 Nitrogen= total A
Molar mass H x 6.022x10^23 x 2 Hydrogen= total B
Add total A+B = your answer
I don't have a calculator or periodic table but if you plug in the numbers you'll get your answer. Hope it helps.
Answer:
Cookies definitely obeys the law of conservation.`
Explanation:
As, When Maria mixes up the ingredients, Water was also one among them
And, Initially When she was measuring the weight of Ingredients, Weight of Water was coming,
But,
When She baked the cookies , water from the cookies got evaporated , and thus weight coming was decreased finally.
Considering Cookies and Environment Whole as a system You can clearly say that they obeys Law of conservation of mass , As Water is present in Environment for now.
