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egoroff_w [7]
3 years ago
10

How many molecules are in 0.943 grams of water

Chemistry
2 answers:
ipn [44]3 years ago
7 0

Answer:

3.16 x 10²² molecules H₂O in 0.943 gram

Explanation:

Given 0.943 g H₂O = (0.943 g / 18 g·mol⁻¹) = 0.05253 mol H₂O

0.05253 mol H₂O = 0.05253 mol H₂O x 6.023 x 10²³ molecules·mol⁻¹

= 3.16 x 10²³ molecules H₂O

zavuch27 [327]3 years ago
5 0

Answer: ther are 065.3

Explanation:

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allsm [11]

Answer:

Examples of Chemical Changes

Burning wood.

Souring milk.

Mixing acid and base.

Digesting food.

Cooking an egg.

Heating sugar to form caramel.

Baking a cake.

Rusting of iron.

8 0
3 years ago
A student placed 15.5 g of glucose (C6H12O6) in a volumetric flask, added enough water to dissolve the glucose by swirling, then
natali 33 [55]

Answer:

There are 0.93 g of glucose in 100 mL of the final solution

Explanation:

In the first solution, the concentration of glucose (in g/L) is:

15.5 g / 0.100 L = 155 g/L

Then a 30.0 mL sample of this solution was taken and diluted to 0.500 L.

  • 30.0 mL equals 0.030 L (Because 30.0 mL ÷ 1000 = 0.030 L)

The concentration of the second solution is:

155 \frac{g}{L} *\frac{0.030L}{0.500L}=9.3\frac{g}{L}

So in 1 L of the second solution there are 9.3 g of glucose, in 100 mL (or 0.1 L) there would be:

1 L --------- 9.3 g

0.1 L--------- Xg

Xg = 9.3 g * 0.1 L / 1 L = 0.93 g

8 0
4 years ago
Which statement describes a step in the formation of an ionic bond?
BartSMP [9]
The correct answer is  a metal atom forms a cation, and a nonmetal atom forms an anion.  This is because metals are less electronegative than nonmetals and will therefore give electrons to nonmetals.  Atoms that give up electrons will have a positive charge therefore becoming a cation while atoms that accept electrons will have a negative charge therefore becoming an anion.


Ions that have the same charge can't be attracted to each other since it takes a positive and negative charge to cause attractive forces. 

A less electronegative atom will transfer electrons to a more electronegative atom.

A metal (cation) can pull electrons from another metal (not an ion) but that does not form an attractive force between the two metals (You will learn more about this when you go over reduction potentials, redox reactions, and electrochemistry).

I hope this helps.  Let me know if anything is unclear.
7 0
3 years ago
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Which diagram shows how the particles of the solid substance will look after it has absorbed enough heat to melt partially ??
cricket20 [7]
It would be A, the molecules should be closely packed together but arranged randomly. :)
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4 years ago
A mixture of lipids is applied to a silica gel column, and the column is then washed with increasingly polar solvents. the mixtu
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YOu need some fresh memes sir

6 0
3 years ago
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