2. In the following reactions identify the acid-base conjugate pairs: a. CH3COO + HCN CH3COOH + CN b. HCO3 + HCO3 = H₂CO3 + CO3²- c. H₂PO4 + NH3 → HPO4² + NH4+ d. HCIO + CH3NH2 → CH3NH3 + CIO e. CO3²- + H₂O = HCO3 + HO

The following arrows are incorrectly drawn and I drawn them correctly please check if it's right and write a little explanation how it's right

A bucket of water has a volume of 0.473 kL . How many dL is this? STARTING AMOUNT ADD FACTOR ANSWER RESET *( ) 47300 1000 0.001 0.01 10 4730 0.0000473 100 0.473 0.1 1 0.00473 473 0.000473 kL dL +

1-4 please

Hailey bought one TI30XIIS calculator and two packs of grid paper for Mrs. Smith's math class.  She paid $17.25. Larry bought two TI30XIIS calculators and one pack of grid paper for $27.00. SHOW WORK. What was the cost of one TI30XIIS calculator? What was the cost of one pack of grid paper?

11. A material safety data sheet (MSDS) for a chemical is shown below. MSDS H3PO4(aq) Section 9: Physical and Chemical Properties Physical state and appearance: Viscous liquid Odor: Odorless Color: Clear, colorless Boiling point: 158°C Melting point: 21°C Specific gravity: 1.685 at 25°C Which of these is the appropriate name for H3PO4 (aq)? A. Trihydrogen phosphite B. Phosphoric acid C. Phosphorous hydroxide D. Phosphorous acid

1.19 The lattice constant of a single crystal is 4.73 Å. Calculate the surface density (#/cm²) of atoms on the (i) (100), (ii) (110), and (iii) (111) plane for a (a) simple cubic, (b) body-centered cubic, and (c) face-centered cubic lattice.

10 11 12 13 14 15 16 17 18 19 20 Calculate the solubility of BaCro, in water at 25 °C. You'll find K data in the ALEKS Data tab. sp Round your answer to 2 significant digits. Continue MacBook Air

Maaliol is a fragrance found in patchouli oil. Draw the missing products and/or reagents in this synthesis of maaliol. Use a dash or wedge to indicate relative stereochemistry of substituents on asymmetric centers, where applicable. pa M H Os04 1. NH2NH2, KOH 2. SeO2 3. NH2NH2, KOH 7 Br ✔ o

Express Surgery Center's (ESC) preferred stock, which has a par value equal to $160 per share, pays an annual dividend equal to 10 percent of the par value. If investors require a 14 percent return to purchase ESC's preferred stock, what is the stock's market value? Do not round intermediate calculations. Round your answer to the nearest cent.