What is an astronomical unit

A) A measurement of the length for the universe

B) The measurement from Mars to the sun

C) A measurement for the diameter of the sun

D) The measurement of the Milky Way galaxy

Several genes change in a population of crows that no longer mate with crows in other populations this is an example of?

Which subatomic particle makes the atoms of each elements different?

Which of the following statements is true regarding a covalent bond in CO? Valence electrons are transferred to the oxygen atom. The bond length is less than the sum of the two atomic radii. Bonding electrons are stationary in the CO molecule.

If a scientist knows the relative age of a fossil, he can also know the relative age of the rock where it was found. how long the organism was alive. how it became extinct. the type of climate from which it came.

Solid sodium hydroxide reacts with gaseous carbon dioxide to form solid sodium carbonate salt and liquid water. Formulate the balanced chemical reaction When 1.85 mol NaOH and 1.

What does a positive standard reduction potential mean about a given element? The element is more readily oxidized than hydrogen. The element is more readily oxidized than most other elements. The element is more readily reduced than hydrogen.

Which statement correspond to a cellular respiration

A tire is filled to a gauge pressure of 2 atm at 27 degrees Celsius after a drive the temperature within the tire rises to 47 degrees celsius. What is the pressure within the tire now

What mass, in grams, of fluorine has (F2) is contained in a 10.3-liter tank at 29.8 degrees Celsius and 1.23 atmospheres? Show all of the work used to solve this problem.

What is the empirical formula of a substance that contains 2.64g of C, 0.444g H and 3.52g of O