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Ugo [173]
3 years ago
10

What is a solution?

Chemistry
2 answers:
Shalnov [3]3 years ago
3 0
<span>A means of solving a problem or dealing with a difficult situation.

</span>
Leno4ka [110]3 years ago
3 0
It's a noun.
A means of solving a problem or dealing with a difficult situation
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Calculate the mass in grams of 1.72×10^24 molecules of formaldehyde. The chemical formula for formaldehyde is CH2O.
pishuonlain [190]

Answer: m= 85.8 g CH2O

Explanation: First step is convert the molecules of CH2O to moles using the Avogadro's Number.

1.72x10²⁴ molecules CH2O x 1 mole CH2O / 6.022x10²³ molecules CH2O

= 2.86 moles CH2O

Next is convert the moles of CH2O to mass using the molar mass of CH2O

2.86 moles CH2O x 30 g CH2O / 1 mole CH2O

= 85.8 g CH2O

5 0
3 years ago
What is th correct chemical symbol for nitrogen​
postnew [5]
The correct symbol is N
3 0
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Natasha_Volkova [10]

Answer:

continental-continental convergent boundary

Explanation:

When two continental plates converge, they smash together and create mountains. The amazing Himalaya Mountains are the result of this type of convergent plate boundary. The Appalachian Mountains resulted from ancient convergence when Pangaea came together.

5 0
3 years ago
**<br> H₂ + O2-&gt;<br> Balancing equations from a reaction
goblinko [34]

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2H2+O2->2H2O

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In an electron-dot structure of an element, the dots are used to represent ________.
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