Answer:
Alpha, beta, and gamma particles
Explanation:
A shield of aluminium can effectively block off any form of radiation be it alpha, beta or gamma particles.
Radiations are products of nuclear reactions. These radiations produced are quite harmful and injurious to life.
A thick and appropriate material must be used to block off these radiations so as to properly interact with them in an advantageous way.
A shield of aluminium, a block of lead and any material with a high thickness and density is appropriate for neutralizing these forms of radiation.
Answer:
Give the test to a company that gives permission for the drug to given to the rest of the world.
Explanation:
Answer:
43.0 kJ
Explanation:
The free energy (ΔG) measures the total energy that is presented in a thermodynamic system that is available to produce useful work, especially at thermal machines. In a reaction, the value of the variation of it indicates if the process is spontaneous or nonspontaneous because the free energy intends to decrease, so, if ΔG < 0, the reaction is spontaneous.
The standard value is measured at 25°C, 298 K, and the value of free energy varies with the temperature. It can be calculated by the standard-free energy of formation (G°f), and will be:
ΔG = ∑n*G°f products - ∑n*G°f reactants, where n is the coefficient of the substance in the balanced reaction.
By the balanced reaction given:
2NOCl(g) --> 2NO(g) + Cl2(g)
At ALEKS Data tab:
G°f, NOCl(g) = 66.1 kJ/mol
G°f, NO(g) = 87.6 kJ/mol
G°f, Cl2(g) = 0 kJ/mol
ΔG = 2*87.6 - 2*66.1
ΔG = 43.0 kJ
The solute normally doesn't dissolve and sinks to the bottom of the container. However, some saturated solutions can become super-saturated for a given temperature and pressure, by altering the conditions without allowing solute to precipitate.