basic concept, Chemistry

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difference between atom,element,compound,molecule,ion,charge

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Please Help!, 2. A mixture is prepared by adding 25.0 mL of 0.185 M Na3PO4 ...

2. A mixture is prepared by adding 25.0 mL of 0.185 M Na3PO4 to 34.0 mL of 0.140 M Ca(NO3)2. (a) What mass of Ca3(PO4)2 will be formed? (b) What will be the concentrations of eac

Lanthanum and the lanthanides, LANTHANUM AND THE LANTHANIDES   The ...

LANTHANUM AND THE LANTHANIDES   The lanthanides are 14 components following lanthanum in the periodic table, and associated with the filling of the seven orbitals of the

Determine product of uncertainties-velocity for an electron, According to H...

According to Heisenberg's uncertainty principle, the product of uncertainties in position and velocities for an electron of mass 9.1x 10 -31 kg is: (1) 2.8x 10 -3 m 2 -s -1

Find the molecular formula for a compound, 1. A compound whose empirical fo...

1. A compound whose empirical formula is CH 3 has a molar mass of 30 g/mol. What is its molecular formula? (3 points) 2. Find the molecular formula for each of the following co

Determine how much stock formic acid required, Formic acid is a weak acid a...

Formic acid is a weak acid along with a pKa of 3.75. The name comes by the Latin term "formica" ("ant") since this is very plentiful into the secretions of several species of ants,

How to find which compound is acid or basic?, We can find a compound  is  a...

We can find a compound  is  acid or base by using litmus test. Acides turnes red litmus to blue colour, in case of base it turnes blue  litmus to red.(or) According to arrhenius

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