8. What is the empirical formula of an oxide of nitrogen that contains 63.64 % nitrogen by mass? a. NO b. NO2 c. N2O d. N2O5

2. Identify the ions present in NH4NO3 a. NH4+, N-3, O-2    b. N-3, H+, O-2      c. NH4+, NO3- d. NH4+, NO3 –

Which one of the following substances is classified as a chemical compound? a. Co b. Cr c. Mo d. HI

4. What is the correct formula for Chromium (III) oxide? a. Cr2O3 b. CrO2 c. Cr3O2 d. CrO

A client whose prenatal weight was 105 pounds weighed 109 pounds at her 12 week visit. Which of the following comments by the nurse is appropriate at this time?

Which of the following is a strong acid in aqueous solution? a. CH3COOH b. Mg(OH)2 c. H3PO4 d. NH3 e. HNO3

A nurse is working in the prenatal clinic. Which of the following findings seen in a client in their third-trimester of pregnancy would the nurse consider to be within normal limits? Select all that apply.

6. You have 2.50 g of each of the following elements: Ca, Cu, C, and Cr. Which sample contains the largest number of atoms? a. Ca b. Cu c. C d. Cr

A client enters the prenatal clinic. They state that they missed their period yesterday and used a home pregnancy test this morning. The client states that the results were negative, but “I still think I’m pregnant.” Which of the following statements would be appropriate for the nurse to make at this time?

A 36 year old professional client who is pregnant for the first time at 10 weeks gestation tells the nurse that their pregnancy was planned, but that “I’m feeling like maybe this wasn’t such a good idea.” Which of the following responses by the nurse would be most appropriate?