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tatyana61 [14]
4 years ago
8

Which of these is a pure substance?

Chemistry
1 answer:
Flura [38]4 years ago
5 0
Ocean water ..........................................................
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What 5 things can reduce biodiversity
MrRissso [65]
Climate change, deforestation/habitat loss, pollution, overexplotation and invasive species
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3 years ago
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When bethany walks across a carpet her socks pick up many electric charges. Later in the day these charges are no longer present
maxonik [38]

Answer:

When bethany walks across a carpet, her socks pick up many electric charges. Later in the day, these charges are no longer present on her socks. What most likely happened to the charges.

A. the charges disappeared.

B. The charges switched signs

C. the charges transferred to another object ✓

D. The charges broke apart into smaller particles

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3 years ago
What is the density of a liquid is 67.1 mL of liquid weighs 55.221 g
Mnenie [13.5K]

Answer:

<h2>0.82 g/mL</h2>

Explanation:

The density of a substance can be found by using the formula

density =  \frac{mass}{volume} \\

From the question we have

density =  \frac{55.221}{67.1}  \\  = 0.822965...

We have the final answer as

<h3>0.82 g/mL</h3>

Hope this helps you

6 0
3 years ago
13.41g of Fe(NO3)2 is dissolved in 83.0mL of water. Calculate the molarity of the solution.
Phoenix [80]

Answer:

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Explanation:

7 0
3 years ago
Write the uses of Ions .​
Montano1993 [528]

Answer:

This is what they are: An ion is a charged atom or molecule. It is charged because the number of electrons do not equal the number of protons in the atom or molecule. An atom can acquire a positive charge or a negative charge depending on whether the number of electrons in an atom is greater or less then the number of protons in the atom.

This is their purpose: Once they reach our bloodstream, negative ions are believed to produce biochemical reactions that increase levels of the mood chemical serotonin, helping to alleviate depression, relieve stress, and boost our daytime energy.

Explanation:

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