What objects are we referring to?
Well , it can be a lot of things. stimulus slow down the body . so it may be a, c, d
Answer:
Renewable Energy Source. Among all the benefits of solar panels, the most important thing is that solar energy is a truly renewable energy source
Reduces Electricity Bills
Diverse Applications
Explanation:
Answer:
Option A is correct = combustion
Explanation:
When substance react with oxygen combustion is occur. The substance which burned is called fuel and in this process large amount of heat is released to the surrounding. It is exothermic process.
For example:
4Li + O₂ → 2Li₂O
2Mg + O₂ → 2MgO
S + O₂ → SO₂
The product which is formed as a result of combustion reaction are called oxides.
In given examples we can see that lithium, magnesium and sulfur react with oxygen and product formed is oxides of respective elements such as lithium oxide ( Li₂O), magnesium oxide (MgO) and sulfur oxide ( SO₂ ).
Other options are incorrect because:
Single replacement:
It is the reaction in which one elements replace the other element in compound.
AB + C → AC + B
Double replacement:
It is the reaction in which two compound exchange their ions and form new compounds.
AB + CD → AC +BD
Decomposition reaction:
It is the reaction in which one reactant is break down into two or more product.
AB → A + B
Answer:
The correct answer is A. 270L
Explanation:
We use the gas formula, which results from the combination of the Boyle, Charles and Gay-Lussac laws. According to which at a constant mass, temperature, pressure and volume vary, keeping constant PV / T. The conditions STP are 1 atm of pressure and 273K of temperature.
We convert the unit of pressure in mmHg into atm:
760mmHg----1 atm
450mmHg---x= (450mmHgx 1 atm)/760mmHg=0,59atm
P1xV1/T1= P2xV2/T2
V2=((P1xV1/T1)xT2)/P2
V2=((0,59atmx500L/300K)x273K)/1 atm=<em>269,407 L</em>