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Oliga [24]
3 years ago
11

3) What is the density of a rock with a volume of 4 cm3 (cubed) and a mass of 12 grams?

Biology
2 answers:
____ [38]3 years ago
5 0

Answer:

Answer is c

Explanation:

mark me brainliest ❤

Bogdan [553]3 years ago
3 0

Answer:

C) 3 g/cm3

Explanation:

Density=mass/volume

D=12/4

Cancel out with the common factor 4

D=3 g/cm3

Therefore density is 3 g/cm3

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Na + Cl2 --> NaCl if you were given 15 grams of sodium (with excess chlorine) and asked to determine the amount of NaCl that
Elena-2011 [213]

Answer:

The correct answer is - 38.15 gm of NaCl.

Explanation:

Write the balanced equation for this reaction of sodium (Na) and chlorine (Cl₂) to produce sodium chloride (NaCl):

2Na + Cl₂ —> 2NaCl

the mass of Na and the mass of NaCl :

Molar mass of Na = 23 g/mol

In the balanced equation = 2 × 23 = 46 g

Molar mass of NaCl = 23 + 35.5

= 58.5 g/mol

similarly in balanced equation = 2 × 58.5 = 117 g

From the balanced equation above,

46 g of Na reacted to produce 117 g of NaCl.

By converting it to 15 grams of Na.

Therefore,15 g of Na will react to produce = (15 × 117)/46 = 38.15 g of NaCl.

Thus, 38.15 g of Na

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olga_2 [115]
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Vlad1618 [11]

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7 0
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The term cancer means <br> A) out of control. <br> B) cell division. <br> C) crab <br> D) lobster
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