Answer:
The correct answer is 7.1 degree C.
Explanation:
Based on the given information, the initial temperature or To of the block is 23.4 degree C.
The energy lost or Q from the given wooden block is -759 J.
The specific heat capacity or c of the wood given is 1.716 J/g°C
The mass of the wooden block given is 27.2 grams.
There is a need to find the final temperature of the wooden block, for this the formula to be used is,
Q = m × c × (T-To)
Now by putting the given values in the formula we get,
-759 = 27.2 × 1.716 (T - 23.4)
T = 7.1 degree C.
There are 7 valence electrons in the atom :)
Because it is a pure substance, and it will not change because it has nothing mixed with it. When things get mixed, amounts vary, but it's on its own so everything stays the same.
The following directions for diluting a 10.0 M answer to a 1.00 M solution is no longer correct.
<h3>.What is the rule of dilution?</h3>
A popular rule to use in calculating the attention of solutions in a sequence is to multiply the unique concentration by means of the first dilution factor, this by the second dilution factor, this by the 1/3 dilution factor, and so on till the ultimate attention is known.
Example: A 5M answer of HCl is diluted 1/5.
<h3>How do you do a 1 in 10 dilution?</h3>
For example, to make a 1:10 dilution of a 1M NaCl solution, you would combine one "part" of the 1M solution with 9 "parts" of solvent (probably water), for a total of ten "parts." Therefore, 1:10 dilution ability 1 part + 9 components of water (or different diluent).
Learn more about dilution here:
<h3>
brainly.com/question/25292980</h3><h3 /><h3>#SPJ4</h3>