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yuradex [85]
3 years ago
14

How to make a sugar cube dissolve more quickly in water?

Chemistry
1 answer:
Vesna [10]3 years ago
3 0
Heat the water up a little
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A sample in lab displaces 15 mL of water in a graduated cylinder. When placed on a scale the mass is 8.7 g. What is the density
Natasha2012 [34]

Answer:

<h2>0.58 g/mL</h2>

Explanation:

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

Density =  \frac{mass}{volume}

From the question

volume = 15 mL

mass of object = 8.7 g

We have

Density =  \frac{8.7}{15}

We have the final answer as

<h3>0.58 g/mL</h3>

Hope this helps you

4 0
3 years ago
What creates an electric current in a battery?
kramer

Answer:

There's a separate chemical reaction happening at the positive electrode, where incoming electrons recombine with ions taken out of the electrolyte, so completing the circuit. The electrons and ions flow because of the chemical reactions happening inside the battery—usually two of them going on simultaneously.

Explanation:

option (B) is right

7 0
3 years ago
As a chlorine atom becomes a negative ion, the atom
Sav [38]

Answer : The correct option is, (1) Gains an electron and its radius increases.

Explanation :

The given element is chlorine.

Atomic number of chlorine = '17'

The electronic configuration of chlorine is, 1s^22s^22p^63s^23p^5

Number of electrons = 17

Number of protons = 17

The electronic configuration of chloride ion is, 1s^22s^22p^63s^23p^6

Number of electrons = 18

Number of protons = 17

When the chlorine atom gains an electron to acquire a stable electronic configuration. As the electrons add in the valence shell of the chlorine, the number of electrons increases but the number of protons remains the same. So, the protons will not be able to bind the extra electron and it will remain far from the nucleus.

6 0
4 years ago
Read 2 more answers
help please this is a major grade (my birthday is next week) if i dont pass i wont celebrate my birthday please help!
Olenka [21]

Answer:

The answer to the question is C

4 0
3 years ago
Which element has the following noble gas configuration:
aniked [119]
Einsteinium Would be your correct Answer.The electron Configuration [Ra] 7s2 5f8 is Not Valid because Ra is basically 7s2. However, you have Ra 7s2 5f8. You can never repeat an electron.
8 0
3 years ago
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