What are the three challenges of life? What kind of challenges can you see these organisms dealing with?

Substances that are created and come out of a chemical reaction

Ling decided to do a science project on exercise. She wanted to find out how long it takes for a person's heart rate to slow down to normal after exercise. Which of the following was likely the scientific prediction Ling made about her project? A.

If you mix 4.5 g of hcl in enough water to make 0.9 l (900 ml of solution, what is the molarity of the solution?

What product, including stereochemistry, is formed when CH3OCH2CH2C≡CCH2CH (CH3) 2 is treated with the following reagent: H2 (excess), Lindlar catalyst?

How is Earth's surface likely to change along the edges of a bend in a river channel? A. Erosion takes place along the inner edge as water flows relatively slowly. B. Erosion takes place along the outer edge as water flows relatively fast. D.

In 1901, Thomas Edison invented the nickel-iron battery. The following reaction takes place in the battery. Fe (s) + 2 NiO (OH) (s) + 2 H2O (l) Fe (OH) 2 (s) + 2 Ni (OH) 2 (aq) How many mole of Fe (OH) 2, is produced when 5.35 mol Fe and 7.

As you move from left to right across the periodic table, the atomic numbers increase decrease stay the same are random

Use the octet rule to predict the formula of the compound that would form between fluorine and iodine, if the molecule contains only one fluorine atom and only single bonds are formed.

64.0 grams of Sulfur Dioxide absorbed 5.00 kJ of heat and immediately evaporated. With this information, calculate its molar enthalpy of vaporization in units kJ/mol.

Which of these is not a biomass source? A) Sun B) Manure C) Wood chips D) Paper