Answer:
1,43 M
Explanation:
molair mass NaCl = 58,44 g/mol
You need to calculate how many moles 25 g is:
25 g / 58,44 g/mol = 0,4278 mol
0,4278 mol / 0,3 L = 1,43 M
It will take 1.254 billion years to reach 29% of the original amount of U-235.
<h3>
First-order Radioactive Decay:</h3>
The rate constant can be calculated from the half-life. The relationship of the two is shown below:
×
The first-order integrated rate law of a nuclide undergoing radioactive decay is;
ln[A]_t = -kt + ln[A]_0.
×
×
It will take 1.254 billion years to reach to 29% of the original amount.
Learn more about radioactive decay here:
brainly.com/question/9932896
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35x5=175sec
Explanation:
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Answer
Animals losing habitats such as polar bears
Answer: -345.2 KJ
Explanation: As we know that ,dG=dH-TdS
T=25+273=298 K
dG= -356 x1000-298(-36)= -356000+10728
=-345272 j
= -345.2 KJ