An acid (HA) dissociates as follows: HA – H* +A minus Arrow should be interpreted as an equilibrium arrow. The pH of the 0.35 M solution of HA is 4.83. What is (A minus]? Express your answer as a decimal, not an exponent. Please include a proper (abbreviated) unit.

please answer in about 4 sentences :)

(B) How many moles of C and H? Express your answers using three significant figures separated by a comma.

17. Given the reactants for each situation below, predict the products of the reaction and write a balanced chemical equation. If you predict that no reaction will occur, write the formula of the reactants, then NR. (2x4) a. Rainwater falling on an iron nail exposes it to carbonic acid b. Hydrogen and oxygen gases react under heat and pressure in the engine of a hydrogen-powered car

Cu (II) sulfate exists as a hydrate. It has many practical uses including use as a fungicide and pesticide. When mixed with chromium and arsenic it forms the wood preservative called CCA. CCA was used in pressure treated wood to protect wood from rotting due to insects and microbial agents. Because CCA treated wood contains toxic heavy metals, its use has been discontinued for home use and children’s play sets.   1. A chemist is given a sample of the CuSO4 hydrate and asked to determine the empirical formula of it. The original sample weighed 42.75 g. After heating to remove the waters of hydration, the sample weighed 27.38 g. Determine the formula for this hydrate.

6. 7. 10 11 12 13 14 Aqueous hydrochloric acid (HCI) will react with solid sodium hydroxide (NAOH) to produce aqueous sodium chloride (NaCl) and liquid water (H,O). Suppose 27.0 g of hydrochloric acid is mixed with 7.7 g of sodium hydroxide. Calculate the minimum mass of hydrochloric acid that could be left over by the chemical reaction. Round your answer to 2 significant digits. Submit A. Continue

Name: Date: 1. In mammals, lactose (milk sugar) is metabolized to glucose (C₂H₁2O), the key nutrient for generating chemical potential energy. 12 What is the mass percent of each element in glucose? How many grams of carbon are in 16.55 g of glucose? a) 6.714 mass % C, 40.00 mass % H, 53.29 mass % O, 6.620 g C b) 40.00 mass % C, 6.714 mass % H, 53.29 mass % O, 6.620 g C c) 6.620 mass % C, 6.714 mass % H, 40.00 mass % O, 53.29 g C d) 50.00 mass % C, 7.714 mass % H, 5.329 mass % O, 66.20 g C

O CHEMICAL REACTIONS |1 Solving for a reactant using a chemical equation 0/5 Wine goes bad soon after opening because the ethanol (CH,CH,OH) in it reacts with oxygen gas (0,) from the air to form water (H,0) and acetic acid (CH,COOH), the main ingredient of vinegar. What mass of water is produced by the reaction of 4.6 g of oxygen gas? Round your answer to 2 significant digits. g x10 Explanation Check Terms of Use Privacy Center | Accessi 2022 McGraw Hill LLC. AlI Rights Reserved. IMG-4440.jpg IMG-4439.jpg IMG-4438.jpg Schedule (1).html Schedule.html MacBook Air

Why is it that for o2 it is -x/2. Why is it divided by two?