Humans breathe through bronchi.

Which structure do insects have for breathing?

A. Skin

B. Tracheae

C. Lungs

D. Gills

explain in your own words how you would determine the mass of a product in a chemical reaction (theoretical yield) if you know the mass of reactant.

What are the diaganol relationship between lithium and magnesium?

Which of the following elements has the lowest electronegativity? a. lithium b. Carbon C. bromine d. fluorine

Phosphoric acid can be prepared by reaction of sulfuric acid with "phosphate rock" according to the equation:ca3 (po4) 2 + 3h2so4 → 3caso4 + 2h3po4 suppose the reaction is carried out starting with 125 g of ca3 (po4) 2 and 75.0 g of h2so4.

Provide the common names of Groups 1, 2, 17 and 18.

Many things can cause an organism to become extinct. Here are some possible causes of extinction. Select the human causes of extinction.

Which word equation shows lithium oxide being formed from the reaction between oxygen and lithium? oxygen + lithium oxide Right arrow. Lithium lithium + oxygen Right arrow. Lithium oxide oxygen + lithium Right arrow.

What happens to the speed of light when waves travel through a denser medium

A 1.79-L flask is filled with propane gas (C3H8), at 1.00 atm and - 16.1°C. What is the mass of the propane in the flask?

If an amino acid contained a hydrocarbon (a group of multiple carbons and hydrogens linked together) as its side group, in which of the following categories could it be appropriately designated? A) hydrophilicB) polar C) nonpolarD) basicE) acidic