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Basile [38]
3 years ago
13

I NEED HELP!!!!! 14 points and brainliest to whoever answers correctly first!!!

Chemistry
1 answer:
Bess [88]3 years ago
4 0
That is a typical neutralization reaction of an strong acid (the first proton of the sulfuric acid) and a strong base (sodium hydroxide ). Usually in a neutralization reaction the products of the reactions are salt (sodium sulfate) and water
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What is the change in vapor pressure when 74.60 g fructose, C6H12O6, are added to 185.5 g water (H2O) at 298 K (vapor pressure o
Vlad1618 [11]

Answer:

Vapor pressure of pure water: 3.1690 kPa

Explanation:

Vapor pressure is P=0.955(3.1690)=3.0263 kPa

Change in vapor pressure : 3.169-3.0263=0.142 kPa

3 0
3 years ago
Please helppppppppppppppppppppppp
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Answer:

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Given the electrochemical reaction as M(s)M2++(aq)Zn2+(aq)Zn(s); E° = +1.61 V. If the standard reduction potential of Zn2+→Z
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If two plus two is four then four plus four is two
6 0
4 years ago
The chemical formula of aspirin is C9H8O4. What is the mass of 0.40 mol<br> of aspirin?​
dybincka [34]

Answer:

\boxed {\boxed {\sf About \ 72 \ grams }}

Explanation:

To convert from moles to grams, we must use the molar mass (also known as the gram formula mass).

First, look up the molar masses of the elements in the formula.

  • C: 12.011 g/mol
  • H: 1.008 g/mol
  • O: 15.999 g/mol

Next, multiply by the subscript, because it tells us the number of atoms of each element in the formula.

  • C₉: 4(12.011 g/mol)= 108.099 g/mol
  • H₈: 8(1.008 g/mol)= 8.064 g/mol
  • O₄: 4(15.999 g/mol)= 63.996 g/mol

Add the values.

  • 108.099 + 8.064+63.996=180.159 g/mol

Use this molar mass as a ratio.

\frac {180.159 \ g \  C_9H_8O_4}{1 \ mol \ C_9H_8O_4}

Multiply by the given number of moles, 0.40

0.40 \ mol \ C_9H_8O_4 *\frac {180.159 \ g \  C_9H_8O_4}{1 \ mol \ C_9H_8O_4}

The units moles of aspirin cancel.

0.40  *\frac {180.159 \ g \  C_9H_8O_4}{1 }

72.0636 \ g \ C_9H_8O_4

The original number of moles has 2 sig figs (4 and 0), so answer must have the same. For the number we calculated, it is the ones place. The 0 in the tenth place tells us to leave the 2.

72 \ g

5 0
3 years ago
According to the periodic table, lithium and nitrogen have the same number of
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Lithium and nitrogen have the same electron energy levels, actually 2 levels.
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