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Pani-rosa [81]
3 years ago
8

In a constant‑pressure calorimeter, 65.0 mL of 0.860 M H 2 SO 4 was added to 65.0 mL of 0.400 M NaOH . The reaction caused the t

emperature of the solution to rise from 21.49 ∘ C to 24.21 ∘ C. If the solution has the same density and specific heat as water ( 1.00 g / mL and 4.184 J / ( g ⋅ °C), respectively), what is Δ H for this reaction (per mole of H 2 O produced)? Assume that the total volume is the sum of the individual volumes.
Chemistry
1 answer:
xz_007 [3.2K]3 years ago
3 0
Use google it really helps
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What is the emperical formula of a compound containing 40.1% carbon and 6.6% hydrogen​
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Answer:

CH₂

Explanation:

Given parameters:

Percentage composition:

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Unknown:

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Solution:

The empirical formula of a substance is its simplest formula.

 Elements                             Carbon                             Hydrogen

Percentage

Composition                           40.1                                     6.6

Molecular mass                        12                                         1

Number of moles                  40.1/12                                  6.6/1

                                                3.342                                    6.6

Divide through by

the smallest                         3.342/3.342                           6.6/3.342

                                                      1                                        2

So the empirical formula of the compound is CH₂

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