Answer:
properties that have volume, mass, weight, length or circumference.
Explanation
these all can be measured
a. 2Na Al 03
Equation must have the same number of each element on both sides of the equation.
Answer:
The total amount of heat needed to change 2250 grams of silver at 200 ºC to 0ºC is 5805 J.
Explanation:
The melting point of silver is 961.8 ºC, meaning that heat released is entirely sensible. Therefore, the amount of heat released by the sample of silver (), measured in joules, is determined by the following formula:
(1)
Where:
- Mass, measured in kilograms.
- Specific heat of silver, measured in joules per grams-degrees Celsius.
, - Initial and final temperatures, measured in degrees Celsius.
If we know that , , and , then the heat received by the sample of silver is:
The total amount of heat needed to change 2250 grams of silver at 200 ºC to 0ºC is 5805 J.
I believe the answer is "After adding two substances together a new order is detected" because nearly all of the other answers suggest a chemical change has taken place. The reason I say "almost" is because answer two and four results in bubbles forming so the answer cannot be both. The only one to not clearly show a chemical change has occurred is the last answer.