The atomic number of sodium (Na) is 11. Which of the following is the correct electron configuration for this neutral atom?

Question 1 options:

1s22s22p63s1

1s22s22p6

1s12s12p63s3

1s22s23s24s2

Which change to American life happened as a result of new technology in the late twentieth century? A. Americans could cash their checks in person at the bank. B. Americans could make phone calls from their homes. C.

Determine the molality of an aqueous solution that is 15.5 percent urea by mass.

The combustion of carbohydrates and the combustion of fats are both exothermic processes, yet the combustion of carbohydrates is a faster process. How can this be?

Which energy change occurs during boiling? Some heat energy of the substance is lost Heat energy of the substance remains the same Most heat energy of the substance is lost. Heat energy is adsorbed by the substance.

How many molecules are in 23 moles of O2

A solution that is 33.6 % by mass of phenol (C6H5OH) in water is prepared. What is the mole fraction of the phenol?

Describe the law of conservation of momentum

14. What steps should you take to keep parents and the public from viewing your personal information on social networks?

Match the factors which affect the rate of dissolving/dissociation/diffusion.

How would the equilibrium of an exothermic reaction at 25°c be affected if the temperature of the system were reduced? (hint: apply le chatelier's principle) ?