2 years ago

1. When the following oxidation-reduction reaction in acidic solution is balanced, what is the

Chemistry

1 answer:

borishaifa [10]2 years ago

8 0

A. 1
B. 4
C. 5
D. 3
E. 2

The correct answer is E. 2

You might be interested in

Which sample of matter has a crystal structure?

Maurinko [17]

The correct answer:C) NaCl(s)
Hope this helps!

4 0

3 years ago

Assuming that the bath contains 250.0 g of water and that the calorimeter itself absorbs a negligible amount of heat, calculate

Anvisha [2.4K]

Answer:

$-3272$ kJ/mol

Explanation:

Given and known facts

Mass of Benzene $= 0.187$ grams

Mass of water $= 250$ grams

Standard heat capacity of water $= 4.18$ J/g∙°C

Change in temperature ΔT $= 7.48$ °C

Heat

$=250 * 4.18 * 7.48\\=7816.6 \\=7.82$

Heat released by benzine is - 7.82 kJ

Now, we know that

$0.187$ grams of benzene release $= -7.82$ kJ heat

So, $1$ g benzine releases

$\frac{ -7.82 }{0.187}\\= -41.8$

kJ/g

$0.187 * \frac{1}{78.108}=0.00239$ mol C6H6

Heat released

$= \frac{-7.82}{ 0.00239}$

$=-3272$ kJ/mol

4 0

2 years ago

Create a time that marks important events during the Precambrian Supereon.

Maurinko [17]

I really hope this help!!

8 0

2 years ago

Read 2 more answers

The escape of molecules from the surface of a liquid is known as _____.

RUDIKE [14]

Its c. evaporation :)

8 0

3 years ago

Read 2 more answers

How much heat will be released when 10.0 g of hydrogen peroxide decomposes according to the following reaction: 2H2O2(l) 2H2O(l)

kramer

C. 28 KJ

AMU of H2O2 = 2(1) + 2(16) = 34 g/mol
10 g / 34 g/mol = 0.294 mol H2O2

0.294 mol / H = 2 mol / 190 KJ
H = 28.9 KJ

5 0

3 years ago