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MArishka [77]
3 years ago
10

Which of the following BEST represents 3.0 moles of an element?

Chemistry
1 answer:
Umnica [9.8K]3 years ago
7 0

Answer:  27 grams of Be

Explanation:  Berylium has a molar mass of 9.0 grams/mole

(9.0 grams/mole)*(3 moles Be) = 27 grams Be

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If 850. mL of linseed oil has a mass of 620. g, calculate the density of linseed oil.
meriva

Answer:

<h3>The answer is 0.73 g/mL</h3>

Explanation:

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

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

From the question

mass = 620 g

volume = 850 mL

We have

density =  \frac{620}{850}   \\  = 0.7294117647...

We have the final answer as

<h3>0.73 g/mL</h3>

Hope this helps you

3 0
3 years ago
Decide which element probably has a boiling point most and least similar to the boiling point of potassium.
larisa86 [58]

Explanation:

  • The boiling point of Potassium is most similar to the element sodium , since , both the elements belong to the same group i.e. , the group one , Hence , the most of the physical chemical properties are same , irrespective of some exceptions .

Hence , the Boiling point of Potassium and sodium are the same .

  • The boiling point of Potassium is least similar to the element helium , since , both the elements belong to different groups , Since , Helium has a negative boiling point and is one of the most stable element , being a noble gas .
4 0
3 years ago
What is the nature of this chlorine ion?
PIT_PIT [208]
As chlorine has seven electrons in its outer most shell so to complete its octet it has to gain an electron and when it gain an electron it will become an anion that is negatively charged
 so in my opinion and what a conclude is that the option B is correct for the above statement
3 0
3 years ago
Read 2 more answers
PLEASE CAN SOMEONE HELP I WILL GIVE BRAINLIEST!!! IF YOU DO ALL 10 QUESTIONS I UPLOAD I WILL GIVE AWAY A LOT OF POINTS!!!
dalvyx [7]

it is binary i think

4 0
3 years ago
3. A vapor is which state of matter? (1 point)<br> solid<br> liquid<br> gas<br> all of the above
lidiya [134]

Answer:

Gas.

Explanation:

8 0
3 years ago
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