True or false. The synthesis of giant molecules from components of repeating units is polymerization.
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The order increasing acidity of the solutions is; CH3COONa ≈ NaF < CH3COONH4 < NH4NO3.
An acidic solution is one whose pH lies between 0 to 6. A salt that undergoes hydrolysis to give an acid will have an acidic pH. Let us now consider the solutions to know which of them will give an acid solution.
- The salt NH4NO3 will give an acid solution because its hydrolysis yields nitric acid
- The salt CH3COONH4 yields a neutral solution
- The salt NaF yields a basic solution because its hydrolysis yields NaOH.
- The salt CH3COONa yields a basic solution since its hydrolysis yields NaOH.
The order increasing acidity of the solutions is; CH3COONa ≈ NaF < CH3COONH4 < NH4NO3.
Learn more: brainly.com/question/9743981
Answer:
The answer to the question is
In order of increasing acidity, we have
CH3COONa→NaF→NaNO3→CH3COONH4→NH4NO3
Explanation:
(i) NH4NO3 is an acidic salt as it consists of NH₃ and HNO₃. NH₃ is a weak base and HNO₃ is a strong acid pH = 5.4
(ii) NaNO3 PH7 produces a neutral solution when dissolved in water
(iii) CH3COONH4 Very concentrated solutions are acidic while low concentration 0.5 M are neutral, pH = 7
(iv) NaF basic as it is formed from weak acid and strong base. The strength of the basicity depends on the solution pH 7.4
(v) CH3COONa Basic in small concentration pH 8 or 9
Therefore we have in order of increasing acidity, CH3COONa→NaF→NaNO3→CH3COONH4→NH4NO3
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The correct answer is meiosis.
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M = 0.125 M
V = 3.0 L
M=n/V(L) ⇒ n = 0.125 mol/L *3.0L = 0.375 mol
MM of K2SO4
K2 = 2* 39 = 78 g/mol
S= 32 g/mol
O4 = 4*16 = 64 g/mol
MM = 78g/mol + 32g/mol + 64g/mol =174 g/mol
mass = n*MM = 0.375 mol*174 g/mol = 65.25 g
b.
M= 0.015 M
V = 0.55L
n = 0.015 mol/L * 0.55L = 0.00825 mol
MM NaF
Na: 23g/mol
F: 19 g/mol
MM = 23g/mol + 19g/mol = 42g/mol
mass = n * MM = 0.00825 mol * 42g/mol = 0.3465 g
c.
n = M*V(L) = 0.350 mol/L * 0,700L = 0.245 mol
MM = 6*12 g/mol + 12*1g/mol + 6*16g/mol = 180 g/mol
mass = n*MM = 0.245 mol * 180g/mol = 44.1 g
(2) radium-226 (4) thorium-232
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Answer: Option (1) is the correct answer.
Explanation:
- A positron is a small particle which contains a +1 charge and its mass is equal to the mass of an electron, that is,
kg.
A positron is represent by the symbol .
For example,
- Whereas nitrogen-16 does not decay to give a positron because nitrogen-16 is the daughter isotope formed due to decay of oxygen-16.
The decay reaction is as follows.
- And, on radioactive decay of thorium-232 there will be formation of radium-228 along with emission of an alpha particle.
The reaction will be as follows.
Therefore, we can conclude that out of the given options positrons are spontaneously emitted from the nuclei of potassium-37.
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b. using pure water
c. blowing on the hot water
d. putting the powder and hot water in a mixer
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A , i think because pure water won't dissolve the powder fast.