Answer: higher,because when salt is dissolved bonds form between the salt ions and the water molecules
Density can be determined as:
d = m /V
whereas, m is mass of compound
v is volume
d = 700 /840 = 0.83 g /mL
Thus density is 0.83 g /mL
Answer:
0.010 $.
Explanation:
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In this case, since 1 troy ounce equals 31.1 grams, we can compute the price of gold per gram first:

Now, we need to compute the grams of copper in 5.17 x10¹⁷ atoms via the Avogadro's number:

Thus, the price is:

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Answer: Star formation begins when the denser parts of the cloud core collapse under their own weight/gravity. These cores typically have masses around 104 solar masses in the form of gas and dust. The cores are denser than the outer cloud, so they collapse first.
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