Which organism is made up of a prokaryotic cell?

A.) Flea

B.) Amoeba

C.) Sunflower

D.) Bacterium

A loaf of bread has a mass of 500g and a volume of 2500 cm3. what is the density of the bread?

Write a balanced chemical equation for the photosynthesis reaction in which gaseous carbon dioxide and liquid water react in the presence of chlorophyll to produce aqueous glucose (c6h12o6) and oxygen gas.

A sample of an unknown metal (density = 4.920 g/mL) weighs 550.0 g. What is the volume of this piece of metal? a. 111.8 mL b. none of these c. 2.706 * 10^3 mL d. 1.118 * 10^5 mL e. 8.945 * 10^-3 mL

Why is it important to use good procedure writing and keep detailed notes during an experiment in Science?

What would the percentage of thorium-232 (parent compound) be in a rock that was dated at 2.8 billions years?

If a nitrogen atom has a - 3 net charge, how many electrons does it have?

Calculate the pH of lemon juice to three significant figures, with a hydrogen ion concentration of 2.12 x 10^-3 mol dm^-3

If the Kb of a weak base is 4.6 * 10-6, what is the pH of a 0.32 M solution of this base?

What mass in grams of ethylene oxide is needed to react with 18 g of water?

Consider two gases, A and B, are in a container at room temperature. What effect will the following changes have on the rate of the reaction between these gases? The temperature is decreased at a constant volume.