3 years ago

Could I please get some help on this?

Chemistry

1 answer:

Deffense [45]3 years ago

6 0

Answer: 0.0008636 kilometers

Explanation:

You might be interested in

Cho 6,72 gam Fe tan hết trong dung dịch H2SO4 đặc nóng dư thu được V lít khí SO2. Giá trị của V là

g100num [7]

4,032

BT electron

nSO2= 3nFe/

8 0

3 years ago

What is the photoelectic effect

const2013 [10]

Is this a multi choice question?????????????????????

5 0

3 years ago

Read 2 more answers

2c2h6 + 7o2 = 4co2 + 6h2o <br> what mass of co2 will be produced from the reaction of 37.5 g c2h6

ivanzaharov [21]

Answer:

use n=m/M (moles=mass/molar mass) to find out how many moles of C2H6 there are in 60g

Explanation:

8 0

3 years ago

The rate constant k for a certain reaction is measured at two different temperatures:

bogdanovich [222]

Answer:

Ea=5.5 Kcal/mole

Explanation:

Let rate constant are $K_1$ and $K_2$ at temperature $T_1$ and $T_2$

By using Arrhenius equation at two different two different temperature,

$Log K_1/K_2 =E_a/2.303R*(1/T_2 -1/T_2 );T_1=273+376=649K ;K_1=4.8*10^8;T_2=273+280=553K ;K_2=2.3*10^8;R=2 cal/(mole.K);Log (4.8*10^8)/(2.3*10^8 )=E_a/2.303R*(1/553K-1/649); Log 4.8/2.3=E_a/2.303R*96/358897 ;0.32=E_a/2.303R*96/358897;E_a=(0.32*2.303R*358897)/96;$