What substance cannot be broken down by chemical change

Which of the following is a producer? A. a crow that consumes a dead animal on the side of a road B. a fish that eats smaller fish for its food C. a giraffe that eats the leaves of trees D. a plant that has insect larvae feeding on its roots

In the reaction below, how many grams of h2o (g) are produced when 2.1 grams o2 (g) are consumed? c4h6 (g) + o2 (g) → co2 (g) + h2o (g) a. 1.2 b. 660 c. 0.64 d. 2.2 e. 0.0020

A strong acid, HA, is added to water. Which statement about the solution is true? It contains mostly hydroxide ions. It contains almost no hydronium ions. It contains little or no HA. It contains a low amount of ions.

Give the reaction for the dissolution of the salt in water. (use the lowest possible coefficients. include states-of-matter under the given conditions in your answer.)

Potassium chlorate (used in fireworks, flares, and safety matches) forms oxygen and potassium chloride when heated. KClO3 (s) → KCl (s) + O2 (g) [unbalanced] What mass of oxygen gas is formed if 26.4 g of potassium chlorate decomposes completely?

2. The pressure of the oxygen gas inside a canister is 5.00 atm at 25 degrees C. The canister is placed in a freezer. If the temperature falls to - 10 degrees Celsius, what is the new pressure inside the canister? 3,41 atm 12.5 atm 4.41 atm 12.5 atm

How many kilojoules of energy are absorbed when 800.0g of water is heated from 20.0º C to 50.0º C

A box experiences a 20 N force to the left and two different 8 N forces to the right. (A) Will accelerate to the left (B) Will accelerate to the right (C) Will not accelerate

Which statement best describes covalent bases

Would gallium, atomic #31, likely form a action or an anion?