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zavuch27 [327]
2 years ago
6

Unlike mechanical weathering what does chemical weathering change about rock?

Chemistry
1 answer:
mylen [45]2 years ago
7 0

  • In chemical weathering minerals are changed into new minerals and mineral byproducts.

  • Some minerals like halite and calcite may dissolve completely.

  • Chemical weathering may change the size of pieces of rock materials, but definitely changes the composition.

  • So one type of mineral changes into a different mineral.

  • Chemical weathering works through chemical reactions that cause changes in the minerals.

<h3>Hope it helps you !!</h3>
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What was the contribution of Dobereiner towards classification of elements?​
Liono4ka [1.6K]

<em>that the relative atomic mass of the middle element in each triad was close to the average of the relative atomic masses of the other two elements.</em>

  • <em>This gave other scientists a clue that relative atomic masses were important when arranging the elements.</em>

<h2><em>hope</em><em> </em><em>it</em><em> </em><em>helps!</em></h2>
6 0
2 years ago
Read 2 more answers
Which substance is a base? HCOOH RbOH H2CO3 NaNO3
Alex Ar [27]

Answer:

RbOH

Explanation:

For this question, we have to remember what is the definition of a base. A base is a compound that has the <u>ability to produce hydroxyl ions</u> OH^-, so:

AOH~->~A^+~+~OH^-

With this in mind we can write the <u>reaction for each substance:</u>

HCOOH~->~HCOO^-~+~H^+

RbOH~->~Rb^+~+~OH^-

H_2CO_3~->~CO_3^-^2~+~2H^+

NaNO_3~->~Na^+~+~NO_3^-

The only compound that fits with the definition is RbOH, so this is our <u>base</u>.

I hope it helps!

6 0
3 years ago
Read 2 more answers
How are objects charged by friction
mote1985 [20]

Answer:

When insulating materials rub against each other, they may become electrically charged . Electrons , which are negatively charged, may be 'rubbed off' one material and on to the other. The material that gains electrons becomes negatively charged

Explanation:

thank me later

4 0
3 years ago
In a coffee-cup calorimeter, 150.0 mL of 0.50 M HCl is added to 50.0 mL of 1.00 M NaOH to make 200.0 g solution at an initial te
Zigmanuir [339]

Answer:

51.54°C the final temperature of the calorimeter contents.

Explanation:

HCl+NaOH\rightarrow H_2O+NaCl,\Delta H=-56 kJ/mol

moles=Molarity\times Volume (L)

Molarity of HCl= 0.50 M

Volume of HCl= 150.0 mL = 0.150 L

Moles of HCl= n

n=0.50 M\times 0.150 L=0.075 mol

Molarity of NaOH= 1.00 M

Volume of NaOH= 50.0 mL = 0.050 L

Moles of NaOH= n'

n'=1.00 M\times 0.050 L=0.050 mol

Since moles of NaOH are less than than moles of HCl. so energy release will be for neutralization of 0.050 moles of naOH by 0.050 moles of HCl.

n = 0.050

-56 kJ/mol=-\frac{Q}{n}

Q=56 kJ/mol\times 0.050 kJ/mol=2.8 kJ=2800 J

(1 kJ= 1000 J)

The energy change released during the reaction = 2800 J

Volume of solution = 150.0 mL + 50.0 mL = 200.0 mL

Density of the solution (water) = 1.00g/mL

Mass of the solution , m= 200 mL × 1.00 g/mL = 200 g

Now , calculate the final temperature by the solution from :

q=mc\times (T_{final}-T_{initial})

where,

q = heat gained = 2800 J

c = specific heat of solution = 4.184 J/^oC

T_{final} = final temperature = ?

T_{initial} = initial temperature = 48.2^oC

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

2800 J=200.0 g\times 4.184 J/^oC\times (T_{final}-48.2)^oC

T_{final}= 51.54^oC

51.54°C the final temperature of the calorimeter contents.

7 0
3 years ago
Rutherford's alpha particle scattering experiment was responsible for the discovery of​
Bingel [31]

Answer:

Atomic Nucleus

Explanation:

Atomic Nucleus

7 0
3 years ago
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