A student sets up the following equation to convert a measurement. (The ? stands for a number the student is going to calculate.) Fill in the missing part of this equation. (-8.6 × 10¹ )--= x cm

Name 10 dissolved substances that negatively affect the environment.

Room temperature:   295.9 K Barometric pressure:   769.0 mmHg Vapor of water:   21.1 mmHg Volume of O2 collected:   59.20 mL Density of H2O2:   1.01 g/mL % Composition H2O2:   3.02 % Volume of H2O2 used:   5.00 mL Letter of the unknown solution of H2O2:   C Volume of O2 collected for the unknown:   64.90 mL     Calculate R in the ideal gas law.

What volume of 12 M HCI is required to prepare 16 L of 0.25 M HCI? 250 mL 333 mL 768 mL 585 mL O 130 mL

Room temperature:   294.0 K Barometric pressure:   770.5 mmHg Vapor of water:   18.6 mmHg Volume of O2 collected:   57.90 mL Density of H2O2:   1.01 g/mL % Composition H2O2:   3.02 % Volume of H2O2 used:   5.00 mL Letter of the unknown solution of H2O2:   B Volume of O2 collected for the unknown:   20.20 mL   corrected barometric pressure. 752 mmHg   Expert, what is a term letter?

A student prepares a 0.29 M aqueous solution of propionic acid (C₂H,CO₂H). Calculate the fraction of propionic acid that is in the dissociated form in his solution. Express your answer as a percentage. You will probably find some useful data in the ALEKS Data resource. Round your answer to 2 significant digits. % X

Complete and balance the following neutralization reactions. H2CO3(aq)+Ba(OH)2(aq)→H2CO3(aq)+Ba(OH)2(aq)→ Express your answer as a chemical equation. Identify all of the phases in your answer.

In 1965, University of Florida assistant football coach be concerned with his players performance. They were "tapping out" around half-time/3rd quarter and were really struggling during summer "hell week" to make it through a day. very He turned to a panel of doctors to trywand figure out what he could do to help his players maintain their stamina in the Florida weather. Their solution... GATORADE! • Gatorade consists of sugar (glucose), sodium (Na), Potassium (K) and water. All three of these electrolytes were needed. 1. What pumps and transporters were these physicians targeting with their concoction? 2. Why did they need ALL THREE solutes to benefit the players?

1. Water is necessary for life on Earth. Water is made up of hydrogen and oxygen atoms (H2O); however, biological life in water depends on another form of oxygen. These organisms need molecular oxygen (O2), which they use to perform aerobic respiration. This molecular oxygen fits into spaces between water molecules and is available for aquatic organisms to use. How do you think molecular oxygen gets into the water? Choose two of the following choices. Select all that apply: From the oxygen atoms that are part of the water molecules. From oxygen that dissolves into water from the atmosphere. From oxygen that is given off by aquatic organisms during respiration. From oxygen that is given off by aquatic plants during photosynthesis.

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