Pick the odd one out from the following.
1 answer:
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Answer : The temperature in Kelvin is, 290 K
Explanation :
S.I : It is known as the international System of Units. It is defined as a scientific method to express the magnitude of the several basics units.
There are seven basic units in the system from which the other units are derived.
The seven base unit are, meter for length, kilogram for mass, second for time, ampere for current, kelvin for temperature, mole for amount of substance and candela for intensity.
The conversion used for the temperature from degree Celsius to Kelvin is:
where,
= temperature in Kelvin
= temperature in centigrade
As we are given the temperature in degree Celsius is, 17
Now we have to determine the temperature in Kelvin.
Therefore, the temperature in Kelvin is, 290 K
Answer:
A) 0.82 g
B) 306 g
C) 0.23 g
D) g
E) 764 g
Explanation:
A) Upon consulting a periodic table one can find the atomic masses of each element present at a given molecule.
H=1.00 g/mol K=39.10 O=16.00
By adding the masses of the atoms in a molecule, we get its molecular weight.
KOH molecular mass is 1.00+39.10+16 = 56.10 g/mol
Therefore the mass in 0.0146 mol of KOH is:
56.10 g/mol x 0.0146 mol = 0.82 g
B) Upon consulting a periodic table one can find the atomic masses of each element present at a given molecule.
H=1.00 g/mol C=12.01
By adding the masses of the atoms in a molecule, we get its molecular weight.
C2H6 molecular mass is 6x1.00+2x12.01= 30.02 g/mol
Therefore the mass in 10.2 mol of KOH is:
30.02 g/mol x 10.2 mol = 306 g
C) Upon consulting a periodic table one can find the atomic masses of each element present at a given molecule.
Na=22.99 g/mol S=32.07 O=16.00
By adding the masses of the atoms in a molecule, we get its molecular weight.
Na2SO4 molecular mass is 2x22.99+32.07+4x16.00=142.05 g/mol
Therefore the mass in 0.0016 mol of Na2SO4 is:
142.05 g/mol x 0.0016 mol = 0.23 g
D) Upon consulting a periodic table one can find the atomic masses of each element present at a given molecule.
H=1.00 g/mol C=12.01 O=16.00
By adding the masses of the atoms in a molecule, we get its molecular weight.
C6H12O6 molecular mass is 16x1.00+6x12.01+6x16.00= 184.06 g/mol
Therefore the mass in 6854 mol of C6H12O6 is:
184.06 g/mol x 6854 mol = g
E) Upon consulting a periodic table one can find the atomic masses of each element present at a given molecule.
H=1.00 g/mol Cl=35.45 g/mol Co=58.93 g/mol N=14.01 g/mol
By adding the masses of the atoms in a molecule, we get its molecular weight.
Co(NH3)6 Cl3 molecular mass is 58.93+6x14.01+18x1.00+3x35.45=267.34 g/mol
Therefore the mass in 2.86 mol of Co(NH3)6 Cl3 is:
267.34 g/mol x 2.86 mol = 764 g