2 years ago

What distinguishes a chemical property from a physical property?

Chemistry

2 answers:

Dvinal [7]2 years ago

6 0

C. Chemical properties always change depending on temperature or pressure

scZoUnD [109]2 years ago

3 0

I think the answer is C.

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An electron charge e mass m and a positron charge e mass m revolve around their common center of mass under the influence of the

Katen [24]

Answer: v = 2π2 Kme2 Z / nh

Explanation:

The formula for velocity of an electron in the nth orbit is given as,

v = 2π2 Kme2 Z / nh

v = velocity

K = 1/(4πε0)

m= mass of an electron

e = Charge on an electron

Z= atomic number

h= Planck’s constant

n is a positive integer.

3 0

3 years ago

How many molecules are in 1 mol of the chemical equation shown above

aivan3 [116]

There's 6.022×10^23 particles in 1 mole of anything

like there is 1000 grams in 1 kilogram of anything

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3 years ago

A compound contains nitrogen and a metal. This compound goes through a combustion reaction such that compound X is produced from

tia_tia [17]

Answer:

The correct answer is: X is nitrogen dioxide, and Y is a metal oxide

Explanation:

Combustion of compound of containing nitrogen and metal will give nitrogen dioxide and metal oxide as product. During combustion reaction a compound reacts with oxygen in order to yield oxides of elements present in the compound.

The general equation is given as:

$4M_3N_x+7xO_2\rightarrow 4xNO_2+6M_2O_x$

Hence, the correct answer is :X is nitrogen dioxide, and Y is a metal oxide.

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3 years ago

What does a high number on the pH scale say about a solution?

erik [133]

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1 year ago

In which liquid does solid brass float?

ch4aika [34]

Answer:

Explanation:

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3 years ago

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