What are Super Acids and bases?

A mixture was found to contain 1.05g of SiO2, 0.69 g of cellulose, and 1.82 g of calcium carbonate. What percentage of calcium carbonate is in the mixture? Write the formula of calcium carbonate.

1. Give reasons why the helium atom is smaller than the cesium atom. 2. A student got a problem wrong.  They were asked, “How many grams of MgCl2 (molar mass = 95.21 g/mol) are needed to make 3.16 L of a 0.500 M MgCl2 solution?”  The correct answer is 150. but the student got 1.58.  What mistake did the student make? 3. To solve the following problem what is the reason you must subtract the vapor pressure of water, 24 torr, from the total pressure, 747 torr in order to solve the problem? “A 500.0-mL sample of H2 gas is collected over water at 298 K and 747 torr.  What volume would the dry H2 gas occupy at STP?  (Given: the vapor pressure of water at 298K is 24 torr).” By the way, the answer is .436 liters. NOTE:  I am not asking you to solve this problem.  I am asking the reason for subtracting the vapor pressure.  If you simply solve the problem, you will get no points.

and (II) chloride. are formed when aluminum reacts with cobalt If no reaction occurs, type NR in both boxes. Please use symbols, not full names, in your answer. For subscripts, please use full-size numbers. For example, H₂O would be entered as H20. Please don't confuse the letter "o" with the number "zero". Please don't confuse the letter "i" with the letter "1". and The products are Enter the free metal first. Enter the ionic compound second. Please include (aq), (I), (s) or (g) in your answers.

Predict the products of the reaction below. That is, complete the right-hand side of the chemical equation. Be sure your equation is balanced. HI+ NaOH → X 3

Lighters typically contain butane (C4H10), which has a molar mass of 58.12 g/mol. Consider that there may have been a mixture of hydrocarbons present in the lighter. If the experimentally obtained molar mass of this mixture was 56.1 g/mol, what other hydrocarbons may have been present? Choices include: CH4 (methane), C2H6 (ethane), C3H8 (propane), C5H12 (pentane), C6H14 (hexane), C7H16 (heptane), or C8H18 (octane). Explain.

Jonathan is helping his mother make soap. She asked him to add the base to the mixture to help form the soap. He looks to the chemical closet and sees three bottles, one labeled NaOH, another labeled HCl, and the last one labeled HNO2. What is the chemical name for the correct compound Jonathan needs to add to the mixture?

The equation for photosynthesis is 6H2O (water) + 6CO2 (carbon dioxide) + Light Energy → C6H12O6 (glucose) + 6O2(oxygen). When first discovered, scientists were trying to decide if the oxygen in the product came from carbon dioxide or water. Which statement describes how scientists traced the path of oxygen?

A mixture was found to contain 1.05g of SIO2, 0.69 g of cellulose, and 1.82 g of calcium carbonate. What percentage of calcium carbonate is in the mixture? Write the formula of calcium carbonate.

Three monoprotic acids are shown in the table below.  Complete the table with the appropriate information. Acid Formula Molecular Wt (g/mol) pKa Ka Aspirin C9H8O4 180.15 3.49   Ibuprofen C13H18O2     6.3 x 10-6‑ Ascorbic acid (vitamin C) C6H8O6   4.17