A blood sample is diluted by placing 0.2ml of the blood in a tube and filling the tube to the 5ml mark with a solution. what percent of the solution represents whole blood?

When 21.6 g of carbon were burned in the presence of 73.7 g of oxygen, 16.1 g of oxygen remained unreacted. What mass of carbon dioxide was produced?

5 Which state of matter takes both the shape and volume of its container? liquid solid gas

To which group on the periodic table does bromine belong?

In some aquatic ecosystems, nitrate (NO3-) is converted to nitrite (NO2-), which then decomposes to nitrogen and water.

Which of the following changes to a pipe would increase the conductance by a factor of 12? A. Quadrupling the length and tripling the radius. B. Reducing the length by a factor of and doubling the radius. C.

The atomic and mass numbers for four different atoms are given below. Which two are isotopes of the same element? Atom Atomic number Mass number a 100 257 b 101 257 c 101 260 d 102 259 A.) A and B B.) B and C C.) B and D D.) C and D

As water is added to a 0.10 M NaCl aqueous solution, the conductivity of the resulting solution

Which process creates food for plants in order to maintain homeostasis? Breathing Cell division Cellular respiration Photosynthesis

What is the percentage composition of soap (C12H35COON) ?

Which of the following pairs of elements are likely to form ionic compounds? Check all that apply. sodium and potassium nitrogen and iodine potassium and sulfur chlorine and bromine helium and oxygen magnesium and chlorine