How many valence electrons are in the acetate ion C_(2)H_(3)O_(2)^- square
What is the approximate pH at the equivalence point of a weak acid- strong base titration if 25 mL of aqueous HF requires ; 30.00 mL of 0.400 M NaOH? K_(a)HF=6.76times 10^-4 a. 1.74 b. 5.75 c. 8.25 d. 12.26
vphich pure substance can be classified as an element? H_(2) NO_(3) NaCl H_(2)SO_(4)
Question 3 of 10 What property is used to calculate the pH of a solution? A. The hydrogen ion concentration in ppm B. The hydrogen ion concentration in mg/dL C. The hydrogen ion concentration in mol/L D. The hydrogen ion concentration in mol/kg
Give the IUPAC name for the organic compound shown: CH_(3)-CH-CH-CH_(2)-COOH chloro-isopropyl alcohol 3-chloropentanoic acid 3-chloropentanone 2-chloropentanal
Question 18 of 20 What is the name for Mg_(3)N_(2) A. Magnesium nitride B. Magnesium dinitride C. Trimagnesium dinitride D. Dimagnesium trinitride
Calculate the predicted melting point for iron. Fe given the melting points of ruthenium, Ru, (2310^circ C) and osmium, Os. (3045^circ C) 2678^circ C 735^circ C 5355^circ C 1575^circ C 3780^circ C
Which of the following is a radioactive nonmetal? Ra At Po Rn none of the above
What is the maximum number of electrons in a 4d orbital? 1 5 10 2 none of the above
Which of the following is true of an electron orbit? An electron orbit is a fixed energy state. An electron orbit increases in size with greater energy. An electron orbit represents an energy level. An electron orbit may contain eight electrons. all of the above
Which of the following alcohols will be used in this lab? Butanol Propanol Ethanol Methanol
Acidic dyes work best in low pH environments. are used for staining negatively charged molecular structures. are negatively charged and work best at low pH. are lipid soluble. are negatively charged.
How many protons does carbon have? 40 39.09 6 12
Measurements taken with a spectrometer require a __ to eliminate background readings from components other than what is being measured in the sample. Select one: a. sample b. replicate c. treatment d. blank
11. [Periodic Table and Periodic Law] Which of the following elements has the greatest tendency to attract electrons in a chemical bond? A. Carbon B. Oxygen C. Fluorine D. Nitrogen
-Develop possible solutions - Brainstorming - think of as many solutions as possible of \( \mathrm{CO}_{2} \) wooden car
8. Every chlorine atom has: 7 electrons 17 neutrons a mass number of 35 an atomic number of 17
1. $6P_{4}O_{10}+H_{2}O$ $3H_{3}PO_{4}$
What is the maximum number of electrons that can occupy a given orbital if they have different spins? 4 2 1 3
How will we know how many electrons are in each ATOM? Type your answer here
