2 years ago

Please answer quickly!!

Chemistry

1 answer:

FromTheMoon [43]2 years ago

5 0

Answer:

i do not no but i do no .nb dncvejx euvcir

You might be interested in

What is the percent by mass of carbon in Al(C03)3

ser-zykov [4K]

The answer is 15.399%

7 0

4 years ago

Read 2 more answers

Chlorine dioxide is used as a disinfectant and bleaching agent. In water, it reacts to form chloric acid (HClO3), according to t

Alex777 [14]

Answer:

Explanation:

4 0

3 years ago

What is the pH of a 0.028M solution (pH=-log(M)) A) 3.56 B)2.88 C)1.55 D)1

Andrew [12]

Answer:

Explanation:

-log(0.028)=1.55

8 0

4 years ago

Read 2 more answers

A sample of milk kept at 25 °C is found to sour 40 times as rapidly as when it is kept at 4 °C. Estimate the activation energy f

irga5000 [103]

Answer:

120.575 kJ is the activation energy for the souring process.

Explanation:

The formula for an activation energy is given as:

$\log (\frac{K_2}{K_1})=\frac{Ea}{2.303\times R}[\frac{1}{T_1}-\frac{1}{T_2}]$

where,

$K_1$ = rate constant at $25^oC$ = $40k$

$K_2$ = rate constant at $4^oC$ = $k$

$Ea$ = activation energy for the reaction = ?

R = gas constant = 8.314 J/mole.K

$T_1$ = initial temperature = $25^oC=273+25=298 K$

$T_2$ = final temperature = $4^oC=273+4=277 K$

Now put all the given values in this formula, we get:l

$\log (\frac{k}{40k})=\frac{Ea}{2.303\times 8.314 J/mol K}[\frac{1}{298K}-\frac{1}{277 K}]$

$E_a=120,575.61J=120.575 kJ$

120.575 kJ is the activation energy for the souring process.

7 0

4 years ago

Can some one pls help me

Ostrovityanka [42]

The answer is B. It will grow towards the hole in the box because the plant will try and get as close to the sunlight as possible which is called phototropism.

5 0

4 years ago

Read 2 more answers