What structure do insects have for breathing (A) gills (B) tracheae (C) skin (D) lungs

A banana split contains 1.12 million calories. What is the energy value in kilojoules? a. 1.12 kJ b. 4.686 x 10^3 kJ c. 4686 kJ d. 2.68 x 10^5 kJ e. 268 kJ

How are wave energy and water depth related? A. Wave energy decreases as water depth decreases B. Wave energy remains constant as water depth changes C. Wave energy decreases as water depth increases D.

Consider the balanced chemical equation, MgCl2 (aq) + 2AgF (aq) → 2AgCl (s) + MgF2 (aq) If both reactants are completely consumed and we produce 20 formula units of AgCl, how many ions of Mg and F did we start with?

Can you mix copper with rubbing alcohol

What is the correct name for this formula: AI2O3? A. Aluminum oxide B. Aliuminum dioxide C. Aluminum trioxide D. Dialuminum trioxide

A catalyst increases the rate of a chemical reaction by

What energy is changed to cell energy in stage 1 of photosynthesis. true or false

A person produces two sound waves with a flute, one immediately after the other. Both sound waves have the same pitch, but the second one is louder. Which of the following properties is greater for the second sound wave?

A voltaic cell is constructed with two silver-silver chloride electrodes, each of which is based on the following half-reaction: AgCl (s) + e-→Ag (s) + Cl - (aq). The two cell compartments have [Cl-] = 1.51*10-2 M and [Cl-] = 2.90 M, respectively.

How many liters of chlorine gas can be produced when 0.98 l of hcl react with excess o2 at stp? 4hcl (g) + o2 (g) - > 2cl2 (g) + 2h2o (g) ?