2 years ago

How to recover ballpoint ink washed off from a paper?

1 answer:

5 0

The first step in clearing a clogged ballpoint pen is to exert additional pressure when scrawling and drawing vertical lines on paper. If this approach doesn't work, dip the pen's tiny tip in rubbing alcohol. [Only the tidbit] Any dried-up or hardened ink on the tip will dissolve with this.

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When calcium chloride is dissolved in water, to which end of the adjacent water molecules will a calcium ion be attracted? the o

Lesechka [4]

Ca ionises into Ca^2+. Ca^2+ will be attracted to O^2- ions in the water, since opposite charges attract. (Hydrogen in water forms H^+)

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3 years ago

A ball is rolled at a velocity of 3 m/s and rolls for 5 seconds. How far does<br> the ball roll? *

MrRa [10]

Answer 15m

Explanation: Distance = Speed x Time

3 x 5 =15

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2 years ago

Elias serves a volleyball at a velocity of 16 m/s. The mass of the volleyball is 0.27 kg. What is the height of the volleyball a

frosja888 [35]

Answer:

2,7 m

Explanation:

You can solve this doing an energy balance:

$m*g*h-\frac{1}{2} *m*v^{2} =41,7[J]$

Solving this equation to get h:

$\frac{41,7- \frac{1}{2} *m*v^{2} }{m*g}=h$

Replacing the values and solving brings to 2,7 m

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3 years ago

Read 2 more answers

9. Circle the atom in each pair that has the greater ionization energy.

Sedbober [7]

A: BE has more ionization energy than LI

B: CA has more ionization energy than BA.
C: NA has more ionization energy than K

D: AR has more ionization energy than P

E: CI has a more ionization energy than SI
F: LI has more ionization energy than K

If any of these are wrong feel free to correct me in the comments.

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2 years ago

5.0 gram of anhydrous calcium carbonate is reacted with an excess of dilute nitric acid. if the reaction is carried out at 25 de

Aneli [31]

Answer:

I don’t know

Explanation:

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2 years ago