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3 years ago

Which burns faster, a large log or the same log cut into small sticks of wood?

Chemistry

1 answer:

Harlamova29_29 [7]3 years ago

8 0

Answer: Small sticks of wood would burn faster.

Explanation:

Rate of a reaction is the speed which a reaction takes place.

Rate of a reaction depends on the surface area of the particles. More is the surface area, more will the rate of reaction as more of the particles surface would be exposed for the reaction to occur.

Surface area is increased by decreasing the size of the particles.

Thus a large log will burn slower as compared to the same log cut into small sticks of wood as lesser area will be exposed to air and thus rate of burning will be slow.

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Please help thaank youu

krek1111 [17]

First, let's start off by finding the mass of this whole hydrate.
(Note: the unit of measurement for mass will be amu)

Let's find the molecular mass of each element.
$Co=58.933$
$Cl=35.45$
$H=1.008$
$O=15.999$

Now, let's find the mass of each compound.

$CoCl_2=58.933+2(35.45)=129.833$
$H_2O=2(1.008)+15.999=18.015$

We have 6 molecules of H2O, so multiply 18.015 by 6 then add that with the weight of CoCl2.

$6(18.015)=108.09$
$129.833+108.09=237.923$

Now divide 108.09 (mass of all the H2O in the hydrate) by 237.923 (total mass of hydrate).

$\dfrac{108.09}{237.923}$

$\approx0.45431$

Turn that into a percentage and you get 45.431%.
Hope this helps! :)

6 0

3 years ago

What reaction type is N2 + O2 ---> 2 NO

zmey [24]

Answer:

decomposition: the reactant is breaking down into its constituent elements.

(hope this helps)!

Explanation:

8 0

2 years ago

What is the difference between a proton, neutron, and electron?

jok3333 [9.3K]

Answer:

proton :

a particale or atom containing a postive charge

nuutron

a particale or atom that contains a negative charge

electron :

a particale or atom with a negative chrage.

Explanation:

proton:

a stable subatomic particle occurring in all atomic nuclei, with a positive electric charge equal in magnitude to that of an electron, but of opposite sign.

nuetron:

a subatomic particle of about the same mass as a proton but without an electric charge, present in all atomic nuclei except those of ordinary hydrogen.

elcetron:

a stable subatomic particle with a charge of negative electricity, found in all atoms and acting as the primary carrier of electricity in solids.

7 0

2 years ago

Calculate the mass of 0.00456 moles of (NH4)2SO4

Anna [14]

To find the mass you need to find the weight of a mol of the molecules by adding up the atomic mass.

N = 14.007 g/mol
H = 1.008 g/mol
S = 32.065 g/mol
O = 16 g/mol

2(14.007) + 8(1.008) + 32.065 + 4(16) = 132.143 g/mol

Now you know how much an entire mol weight you multiply it by how much you actually have

0.00456 * 132.143 = 0.603 g

7 0

3 years ago

What is the name for the prevailing global wind pattern that comes from the poles and blows from east to west?

Fittoniya [83]

Answer: Trade winds :)

Explanation: just took the test

7 0

3 years ago