I think the first one is negative electrons. The second one might be to achieve a higher energy state
Number of moles is found by formula n=mass/molar mass, or m/M. the molar mass is found by adding together the atomic masses of Na and Cl (22.99 + 35.45) to give 58.44 g/mol. Since the mass of NaCl is 75.0g, we find the number of moles as follows:
n = 75.0 / 58.44 = 1.28 mol
Plastic bags are required to contain warnings after showing from several studies that they are a suffocation risk. For plastic bags with a thickness of less than one mil (1/1000 inch) having an opening
size of five inches or more, the following warning statement will meet the requirements of all
state and local laws: “Warning: To avoid danger of suffocation, keep this plastic bag away
from babies and children. Do not use this bag in cribs, beds, carriages, or playpens. This
bag is not a toy.”
Answer:
Examples of compounds that contain only covalent bonds are methane (CH4), carbon monoxide (CO), and iodine monobromide (IBr). Covalent bonding between hydrogen atoms: Since each hydrogen atom has one electron, they are able to fill their outermost shells by sharing a pair of electrons through a covalent bond.
Explanation:
Answer:
CaCO3+2HCl=CaCl2+H2O+CO2 this is the balanced reaction occur between calcium carbonate and HCl to minimize the hyperacidity.
Explanation:
CaCO3 reacts with hydrochloric acid produced by oxytonic cells of the stomach to generate calcium chloride (CaCl2) and water(H2O) along with the release of carbon dioxide(CO2) gas.
This reaction helps to minimize hyperacidity.