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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Plutonium is part of what series of elements?

andre [41]

Answer:

Plutonium is the second transuranium element of the actinide series.

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3 years ago

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What is the mass of 2.80 grams of H2O

IrinaK [193]

The mass of 2.80 grams of h2o is 18.02 amu I believe

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2 years ago

Propane burns in oxygen to produce carbon dioxide and steam. The unbalanced equation for this reaction is: C3H8 + O2 → CO2 + H2O

NemiM [27]

Here is your answer

C3H8 + O2-----> CO2 + H2O

Balancing C atoms

C3H8 + O2------> 3CO2 + H2O

Balancing H atoms

C3H8 + O2------> 3CO2 + 4H2O

Balancing O atoms

C3H8 + $\bold{5}$ O2-------> $\bold{3}$ CO2 + $\bold{4}$ H2O

Hence the equation is balanced.

HOPE IT IS USEFUL

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2 years ago

What is the number of grams of N₂ (g) that contains 1.80 x 10^24 molecules?

svet-max [94.6K]

Answer:

83.69 gm

Explanation:

molar weight of N2 = 28

Find the number of moles then multiply by this

1.8 x10^24/ (6.022x10^23) * 28 =83.69 gm

7 0

1 year ago

The number 40 in the name calcium-40 represents

strojnjashka [21]

Answer:

A. the atomic number

Explanation:

It is a member of the alkaline earth family of metals with the atomic symbol Ca, atomic number 20, and atomic weight 40. Calcium is the most abundant mineral in the body and combines with phosphorus to form calcium phosphate in the bones and teeth.

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3 years ago

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