How much energy is consumed by thawing 4.3 g ice?

O A. 4.3 g x 1 mol/18.02 g 6.03 kJ/mol

B. 4.3 g x 1 mol/18.02 g x 4.186 kJ/mol

C. 4.3 g x 1 mol/18.02g x 40.65 kJ/mol

D. 4.3 g x 1 mol/18.02 g * (-285.83) kJ/mol

Read the given expression. Effective nuclear charge = atomic number - X Which of the following explains the identity of X and its trends across a period? X is the screening constant, and it increases across a period.

Compared to the physical and chemical properties of the compound NO2, the compound N2O has A. the same physical properties and the same chemical properties B. different physical properties and different chemical properties C.

How many grams of NH3 can be produced from 2.27mol of N2 and excess H2.

What type of energy is produced by a geyser? A. Chemical energy B. Thermal energy C. Nuclear energy D. Radiant energy

What are the elements CO2 and PU

Collagen is made of fibers and is found in tendons and cartilage. Collagen contributes to meat toughness and is, therefore, an example of which type of protein?

1. Why does CH30 evaporate faster than water?

How does concentration affect our daily lives in science?

How many nitrogen atoms are in 2.79 mo. of NH3

What is the chemical formula for polysaccharide?