Answer:
1.57 x 10⁷m
Explanation:
Given quantity is;
1.57 x 10¹⁴nm
Now;
1 nm = 10⁻⁹
So, let us convert this given quantity;
1 nm = 10⁻⁹
1.57 x 10¹⁴nm will give 1.57 x 10¹⁴ x 10⁻⁹ = 1.57 x 10⁷m
The stable form of Nitrogen is N-14 and N-15.
- Nearly all proteins contain nitrogen, which is crucial for biochemical processes as well as industrial processes.
- Due to its capacity to form a triple bond with both itself and other elements, nitrogen forms strong bonds. As a result, nitrogen compounds contain a lot of energy. Little was known about nitrogen before one hundred years ago.
- More than 99 percent of all nitrogen found on Earth is found in the most abundant form of nitrogen, nitrogen-14. non-radioactive and stable, it is a substance.
- The most widely used form of nitrogen, 14, is used in biochemicals, biomedical research, food preservation, and agricultural practices.
- The second stable state of nitrogen is nitrogen-15. It is frequently employed in medical preservation and research.
To learn more about nitrogen compounds-
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Mass of Zn = 0.103 g
Volume of HCl (V) = 50.0 ml
Density of solution (D) = 1.00 g/ml
Mass of HCl = D*V = 1.00 g/ml * 50.0 ml = 50.0 g
initial temp T1 = 22.5 C
Final temp T2 = 23.7 C
specific heat c = 4.18 J/g C
The heat (Q) required to raise the temp is given as:
Q = mcΔT = mc(T2-T1)
= (0.103+50)g * 4.18 J/g C * (23.7-22.5) C = 251.3 J = 0.2513 kJ
To find ΔH in kJ/mol
# moles of Zn = mass of Zn/Atomic mass = 0.103/65.39 = 0.00158 moles
a) ΔH = 0.2513 kJ/0.00158 moles = 159.05 kJ/mol
b) A calorimeter is an isolated system where there is no exchange of heat/energy.
Work done is given as: W = PΔV
since ΔV = 0, as the volume remains constant
W = 0
Answer:
Yes
Explanation:
As the number of animals that eat plants increase, the number of plants decrease. This is because the animals are eating a larger and larger number of plants and reducing the population.
When the number of plants gets too low, the animals will not be able to survive, and they will start to decrease in numbers. In turn, the plants will increase again. Eventually, they will reach an equilibrium.
The answer is <span>B) the resulting compound cannot be dissolved in water. Ionic compounds are, in fact, very soluble in water. They are known to dissociate in aqueous solutions, producing ions or charged atoms. This makes aqueous solutions of ionic compounds good conductors of electricity. As solids, ionic compounds form salt crystals. They have high melting and boiling points due to the strong ionic bond that holds them.</span>