Which of the following shows the importance of incoming solar energy for life on earth?

A. food chains

B. enzymes

C. electrons

D. rock cycles

A flower has 26 chromosomes. To create a new flower how many chromosomes would a sperm cell have, what is this process called 2

What is the mole ratio of butane to carbon dioxide in the reaction shown above?

we know from Newton's 2nd Law of Motion that the force on an object is equal to the mass of the object times the acceleration of that object. a 9kg bowling ball was thrown with a force of 5 N.

What is the volume of a 3.0 M solution of hydrochloric acid that contains 1.50 moles of solute?

What unit would scientists use to measure atoms?

Calculate the number of formula units in 4.55 grams of lithium carbonate, Li2CO3

What is the formula of sulfurous acid? H2S HSO4 H2SO4 H2SO3

How many Na + ions are found in 0.5 mol of Na2O?

Glycerin (C3H8O3) is a nonvolatile liquid. What is the vapor pressure of a solution made by adding 170 g of glycerin to 337 mL of H2O at 40.0°C? The vapor pressure of pure water at 40.0°C is 55.32 torr and its density is 0.992 g/cm3.

Which of the following is the best example of an object absorbing light? A black sweater in the sun B clean window in the sun C A curved mirror in the sun D A long shadow in the sun