D. Mushrooms decompose dead things (animals) and get their energy from that. Plants use photosynthesis to create their own energy. I hope that helped I'm not sure how else to explain.
The total heat gained by the solution is: q = mc(dT), where m = 75.0 g H2O, c = 4.18 J/g-C, and dT = 31.8 - 23.2 = 8.6 C. This gives a value of q = (75.0)(4.18)(8.6) = 2696.1 J.
If there were 10.00 g of the compound, then the heat of dissolution of the compound is: 2696.1 J / 10.00 g = 269.61 J/g.
Explanation:
There are certain metals that are less reactive compared to standard hydrogen electrode.
So, such metals do not release hydrogen gas in a reaction with dilute acids.
Examples of such metals are:
copper,silver,gold,platinum,mercury.
Answer:
A burning match stick is brought
near the mouth of the test tube, but no sound is
heard. That means hydrogen gas is not released in this reaction and the metal may be a less reactive metal and it is one among the above list of metals.
<u>Answer:</u> The concentration of KOH solution is 1.215 M
<u>Explanation:</u>
For the given chemical equation:
To calculate the concentration of base, we use the equation given by neutralization reaction:
where,
are the n-factor, molarity and volume of acid which is
are the n-factor, molarity and volume of base which is KOH.
We are given:
Putting values in above equation, we get:
Hence, the concentration of KOH solution is 1.215 M