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aliya0001 [1]
3 years ago
15

In an experiment you find the density of water to water to be 1.23 g.Ml.The theoritical value of the water's density is 1. 00 g/

ml. Find the percent error
Chemistry
1 answer:
Pepsi [2]3 years ago
5 0

Answer:

The percent error is 23%

Explanation:

To find the percent error for the experiment carried out,

Percent error is given by the formula below

PE = \frac{AE}{TV} ×100%

Where PE is the percent error

AE is the Absolute error

TV is the Theoretical value

Also, Absolute error (AE) can be determined from

Absolute error (AE)  = /Theoretical value(TV) - Experimental value (EV)/

Now, from the question,

Experimental value (EV) = 1.23 g/mL

Theoretical value (TV) = 1.00 g/mL

From,

Absolute error (AE)  = /Theoretical value(TV) - Experimental value (EV)/

Absolute error (AE) = /1.00 g/mL - 1.23 g/mL/

Absolute error (AE) = / - 0.23 g/mL/

Absolute error (AE) = 0.23 g/mL

This is the Absolute error

Now, for the Percent error

PE = \frac{AE}{TV} ×100%

PE = \frac{0.23}{1.00} ×100%

PE = 23 %

Hence, the percent error (PE) is 23%

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SashulF [63]
<h2>Input = NADP^+, water and Output = NADPH + O_2</h2>

Explanation:

The light reactions of photosynthesis use water and produce Oxygen, NADPH.

The equation for photosynthesis :

6 CO_2 + 6 H_2O → C_6H_12O_6 + 6 O_2

The process of photosynthesis in two stages -

  • The first stage is called the light reaction in which the light energy from the sun is captured and converted into chemical energy stored in the form of ATP and NADPH
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For a light reaction -

Net Input is of, NADP^+, Light, Water, ADP

Net Output is of, ATP, NADPH, O_2

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3 years ago
How many moles of water were lost if the amount of water lost was 0.456 grams? Do not include units and assume three significant
nika2105 [10]
<h3>Answer:</h3>

0.0253 mol H₂O

<h3>General Formulas and Concepts:</h3>

<u>Math</u>

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right<u> </u>

<u>Chemistry</u>

<u>Atomic Structure</u>

  • Reading a Periodic Table

<u>Stoichiometry</u>

  • Using Dimensional Analysis
<h3>Explanation:</h3>

<u>Step 1: Define</u>

[Given] 0.456 g H₂O (water)

<u>Step 2: Identify Conversions</u>

[PT] Molar Mass of H - 1.01 g/mol

[PT] Molar Mass of O - 16.00 g/mol

Molar Mass of H₂O - 2(1.01) + 16.00 = 18.02 g/mol

<u>Step 3: Convert</u>

  1. [DA] Set up:                                                                                                     \displaystyle 0.456 \ g \ H_2O(\frac{1 \ mol \ H_2O}{18.02 \ g \ H_2O})
  2. [DA] Multiply/Divide [Cancel out units]:                                                          \displaystyle 0.025305 \ mol \ H_2O

<u>Step 4: Check</u>

<em>Follow sig fig rules and round. We are given 3 sig figs.</em>

0.025305 mol H₂O ≈ 0.0253 mol H₂O

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The second and first one but if it isn’t 2 choices then 1
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