Explanation:
think its specific heat of water = 4.18 J/g°Ci
Answer: 0.11 g H2
Explanation: just took test and got it right
<span>The saturated HOT solution is filtered it then rapidly cools due to evaporation under vacuum.
When it cools, the solution becomes supersaturated and usually precipitates since it cools too rapidly to crystallize nicely.
As it precipitates, it clogs usually the funnel. Worse yet as when clogs the filter, our solution sits in the top of the funnel stuck</span>
Answer:
Carbon dioxide is a chemical compound composed two oxygen atoms covalently bonded to one carbon atom. Carbon dioxide's molecular shape is linear. Also carbon dioxide exists in Earth's atmosphere as a gas. Carbon Dioxide- CO2 makes up one of the gases in our atmosphere.
Explanation:
Answer:
A chemical change is required to separate the elements present in it.
Explanation:
The only true statement from the choices given is that water as a pure substance requires a chemical change to separate the elements present in it.
Water is a molecule consist of two atoms of hydrogen and one atom of oxygen.
- The atoms are covalently bonded together.
- A chemical process, the electrolysis of water is often used to separate the atoms of a water.
- Physical changes cannot be used to separate the atoms of water.
- Water is a compound which consists of two elements.
Therefore, we see that only the first choice satisfies this problem.
