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How many moles of pb(no3)2 are required to react with 10 L of 31 m of kcl
2kcl + pb(no3)2 - pbci2 + 2kno3
do not use unit of moles I. Your answer round 3 decimal places
1.5 mol of kcio3 decomposes. How many grams of O2 will be produced
On analysis of ammonium salt of alkanoic acid give 60.5% of carbon, 6.5% of hydrogen. If 0.309g of the salt yielded 0.0313g of Nitrogen. Determine the empirical formula of the salt.
The metal used to recover copper from a solution of copper sulphate is?
A. Na
B. Ag
C. Hg
D. Fe
Please explain reason for the answer also
The molar enthalpy change accompanying the removal of an electron from a gas phase atom or ion in its ground state is called
A. Electron gain enthalpy
B. Ionization enthalpy
C. Enthalpy change
D. Enthalpic gas removal
A 'breath test' used by traffic police to check drunken driving uses?
A. Tumeric on filter paper
B. Silica gel coated with saliva nitrate
C. Potassium permanganate-sulphuric acid
D. Potassium dichromatic-sulphuric acid
Please explain why the answer is D and not C
A solution contains 20g of solute in 180g of solvent. If the solvent is water, what is the concentration of the solution in terms of mass by mass percentage
A. 11.%
B. 22.2%
C. 10%
D. 20%
Please show working
find dalta PH of 400 ml , and 1.17 molar NaOH ,when the same amount of ,100 ml of 0.05 Molar NaOH added
In a Atomic Nucleas the Protons and Neutrons
That hold the Atomic Nucleas Together the Chemical Energy for this process in gasoline .What gets shared for forming the liquid gasoline is it Neutrons , Protons , or Electrons
How to write a Chemistry Formula For
Sharing Electrons, Protons, or Neutrons
To Make Gasoline
WHEN WRITING A REDOX CHEMICAL EQUATION
DOES IT DEAL WITH SHARING ELECTRONS OR PROTONS
IS A REDOX CHEMICAL EQUATION
SHARING PROTONS , NEUTRONS OR ELECTRONS
