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MAVERICK [17]
2 years ago
14

How many significant digits are in the number 2370.0?

Chemistry
2 answers:
xz_007 [3.2K]2 years ago
4 0

Answer:

2370.0 contains 4 significant digits and Option (c) is correct .

1.20\times 10^{-3}\ contains\ three\ significant\ digit.

Option (b) is correct .

Step-by-step explanation:

Rules for finding significant digit .

1 : Non-zero digits are always significant.

2: Any zeros between two significant digits are significant .

3: Trailing zeros in the decimal number is also significant.

As the number given be 2,370.0.  

= \frac{23700}{10}

Simplify the above

= 2370

Thus by using the rule given above.

2370.0 contains 4 significant digits.

Option (c) is correct .

As the number given be 0.00120 .  

= \frac{120}{100000}

Simplify the above

= \frac{1.20}{1000}

= 1.20\times 10^{-3}

Thus by using the rule given above.

1.20\times 10^{-3}\ contains\ three\ significant\ digit.

Option (b) is correct .

den301095 [7]2 years ago
3 0

2370.0 has five significant digits.

Hope this helps!

Davinia.

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Answer:

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Explanation:

Equation of carbon reacting with oxygen to give carbon dioxide is given by

C + O_{2} ⇒ CO_{2}

One mole of carbon reacts with one mole of Oxygen in this reaction to give One mole of Carbon dioxide.

So, 12 gm of carbon reacts with 32 gm of Oxygen in this reaction to give 44 gm of carbon dioxide.

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Oxygen used in this reaction = \frac{15}{44}×32 = 10.91 gm ,

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Carbon that must be used = \frac{15}{44}×12  = 4.09 gm.

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3 years ago
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Answer:

Explanation:

Group           Most Likely Ionic Charge               Number of Valence Electrons

   I                                 +1                                                           1

   II                                 +2                                                         2

   III                                +3                                                          3

   IV                           +4 or -4                                                     4

   V                                  -3                                                         5

   VI                                 -2                                                         6

  VII                                 -1                                                          7

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For elements in group IV and above, their ionic charge is (8-number of their valence electrons.)

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3 years ago
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• π: Osmotic pressure, which is the difference between the levels of the solution and the pure solvent through a semipermeable membrane, which allows the passage of the solvent but not the solute

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<em>Solution volume ⇒ go from mL to L: </em>

1000 mL of solution ____ 1 L

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