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Na is a metal with valency = 1
HNO3 is a monobasic acid
thus, the reaction between them will be in the molar ratio of 1:1.
Provide your solution for further details.

HINT:- Find the molar mass of NiCl2 * 6H2O and then proceed.

Colloids and suspenions are mixtures but have different properties.Suspensions can be seperated fully but not colloids.To know more, provide your views first.

Yes, solutions are homogeneous mixtures i.e the solvent and the solute in the solution are present in a single phase.To know more,provide your views.

See, rate of reaction = rate constant*change in concentration of the reactant raised to some power.
The power to which the concentration term is raised is greater than zero but can be a fraction.It...

The graph curves after the yield point because, it no longer follows the Hooke's Law after the yield point.
Hooke's Law states that " stress is directly proportional to strain".

See, there is a general phrase used in chemistry that " lesser the energy of the substance more stable it is".
The reason for this is that, substances with lesser energy will have very little...

Understand the word reveneue & expense. The definition of these two words will give the answer to youer question.

See the basic approach to this question must be:-
Find the probability that none of the child is a girl.
Substract this probability from the total probability to get your desired answer.
For...

See 50% solution means 50% of the mass of the solution is ethanol.
Now, you get the density of the solution and then use it to find the mass & hence moles of ethanol.

You have the volume of the cylinder and temperature inside the cylinder. Calculate the moles of ethanol and use Ideal gas Equation.For more help show your attempt first.

You have the volume of the...

Just apply the logic that the first stone should reach the top of the building at the same time when the second stone is about to be dropped.
Show, your solution if still you have problem in...

Just to help you start the solution, please note that:-
There will be an acid base reaction and then your problem will be solved automatically.
To know more, show your calculations first.

There are 3 basic relations between velocity, displacement, acceleration & time.
Just go through those equations and see which one fits with your question.
If still you have a problem, show your...

Google out the molecular formula for tannins.
Go through the basic definition of organic molecules
You will definitely get your answer

See, I'm new to the site and am unable to distingiush between homework questions and answerable questions. Please guide me on this.

dry ice is solid CO2.
Molar mass of CO2 = 44 g/mole
Find the number of moles of CO2 and apply Ideal Gas Equation to find the total pressure in the vessel.

Current flows in the direction opposite to the direction of electron flow.
Now, electron flow occurs anode to cathode.
Thus, current flows from cathode to anode.

Total mass of solution required = 72 kg = 72000 g
Mass of MgCl2 required = 305 of the mass of solution = 0.3*72000 = 21600 g
Now, Molar mass of MgCl2.6H2O = 203 g/mole
molar mass of MgCl2 = 95...

These are same compounds

1) a) sum of 1st n terms = (n/2)*[2a + (n-1)d] ; where n = number of terms ; a = first number of the sequence ; d = common difference between consecutive numbers
sum of 1st 2n numbers = (2n/2)*[2a...

use the identities:-
1) cos(2pi) = 1
2) cos2x + cos2y = 2*cos(x+y)*cos(x-y)

See, the governing equation for 1st order kinetics is :-
k*t = ln{[A0]/[A]}; where k = rate constant = ln2/half life ; t = time interval in which the concentration of the reactant changes from [A0]...

Balanced chemical reaction:-
C3H8(g) + 7O2(g) ---------> 3CO2(g) + 4H2O(g)

Molar mass of C3H8 = 44 g/mole
Thus, moles of C3H8 in 82.8 g of it = mass/molar mass = 82.8/44 = 1.882
Thus, as per...

The IUPAC name of the compound is :-
1,4-dichlorobutane

Balanced chemical reaction is:-
2H2 + O2 ---------> 2H2O
Now, initial pressure of H2 = (3/4)*1080 = 810 torr
thus pressure of O2 = 1080 - 810 = 270 torr
Now, 760 torr = 1 atm
Thus, pressure...

1) electronic configuration of potassium (K) = 1s2 2s2 2p6 3s1 3p6 4s1
n = 4 ; l = 0
2) electronic configuration of bohrium (Bh) = 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6...

Copper sulfate = CuSO4
Molar mass of copper sulfate = 159.5 g/mole
Thus, moles of CuSO4 in 10 g of it = mass of CuSO4/molar mass of CuSO4 = 10/159.5 = 0.063
Now, 1 mole of CuSO4 contains 1 mole of...

As per Rydberg's equation:-
(1/L) = (1.1*10^7)*[(1/(n1)^2) - (1/(n2)^2)] ; where L = wavelength ; (1.1*10^7) = Rydberg's constant ; n1 = final energy level = 3 and n2 = initial energy level = 5

The IUPAC name of the compound is :-
2,8-dimethyl-3,6-decadiene

In a solution, there is solute and a solvent.
Now, if the total number of species in the solution is 10^6 (i.e a million) and the number of solute species is 'x', then the concentration of the...

See, basicity is the term linked with acids.
The acids have the tendency to release hydronium ions i.e H+ ions in water. After releasing the hydronium ions, the acid becomes a base which we...

Iron has got magnetic properties. So instead use magnetism as method to separate iron fillings from sand.

For writing electronic configuration of any element, please remember three principles which are
1) Afbau's principle which states that, filling of electrons will take place from lower energy level...

Yes polyethene is an addition polymer.The monomer of this polymer is ethene i.e. C2H4

Except nuclear reactions in which the atoms gets transformed and relkease of energy takes place, all other reactions occurring in nature follows consevation of atoms and mass principles.

Allylic carbocation is more stable than vinylic carbocation because, it can rearrange as it has a adjacent double bond present.