Answer: The oxidation state of a free element (uncombined element) is zero. For a simple (monoatomic) ion, the oxidation state is equal to the net charge on the ion. For example, Cl– has an oxidation state of -1. When present in most compounds, hydrogen has an oxidation state of +1 and oxygen an oxidation state of −2.
hope this helps........ Stay safe and have a Merry Christmas!!!!!!!!! :D Explanation:
Answer:
The balanced chemical equation :
Explanation:
When calcium hydroxide reacts with hydrochloric acid it gives calcium chloride and water as a products. The chemical equation is given as:
According to question, solid calcium hydroxde is added to 38.0 mL of 0.410 M of HCl solution, so the chemical equation can be written as:
According to stoichiometry, when 1 mole of solid calcium hydroxide reacts with 1 mole of hydrochloric acid to gives 1 mole of aqueous calcium chloride and 1 mole of water.
Answer:
Change the temperature and pressure
Explanation:
In case we are analyzing the solubility of a salt in some solvent, raising the temperature would increase the solubility of a salt generally. In contrast, at lower temperatures the solubility of ionic salts would decrease.
Now, another variation of this scenario might be solubility of gases. According to Henry's Law, 
, meaning that the solubility of a gas is directly proportional to its partial pressure. Therefore, the greater the pressure, the greater the solubility of a gas.
Answer:
mitochondria,
Explanation:
Cellular respiration occurs inside cells; specifically, cellular respiration happens inside the mitochondria, the powerhouse of the cell. Cellular respiration is a critical function by which cells release energy for various cellular activities like locomotion, biosynthesis, and even the transportation of molecules between membranes.
Answer:
The temperature increases from 23.0 C to 37.0 °C
Explanation:
<u>Step 1:</u> Data given
DH = -44.4 kJ/mol
mass NaOH = 13.9 grams
mass of water = 250.0 grams
Initial temperature = 23°C = 295 K
Final temperature = TO BE DETERMINED
Specific heat = 4.18 J/g*K
<u>Step 2: </u>Calculate change in temperature
13.9 grams/ 40 g/mol * 44.4 kJ/mol = 15429 J
15429 J = (massNaOH + mass water) * 4.18 * ΔT
15429 = 263.9 *4.18 * ΔT
ΔT = 14°C
<u>Step 3:</u> Calculate final temperature
ΔT= 14°C = T2 - 23°C
T2 = 23 +14 = 37 °C
The temperature increases from 23.0 C to 37.0 °C
